Answer:
X=12
Step-by-step explanation:
3(80-9x)=X-96 Distribute 3 through the parenthesis
240-27x=x-96
Move the variable to the left side and change its sign
Move constant to the right side and change its sign
-27x-x+240=-96
collect the like terms
calculate the difference
-28x=-336
Divide both sides of the equation by -28
x=12
Which ratio forms a proportion with 7/14
A.4/9
B.5/12
C.2/5
D.3/6
Answer:
d. 3/6
Step-by-step explanation:7/14 simplifies to 1/2 and 3/6 also simplifies to 1/2
Using the concept of ratio and proportion to solve the problem. The ratio is 3/6. Then Option D is correct.
What are ratio and proportion?A ratio is an ordered couple of numbers a and b, written as a/b where b does not equal 0. A proportion is an equation in which two ratios are set equal to each other.
Given
7/14 is an expression.
To find
The ratio forms a proportion with 7/14.
7/14 is an expression.
On simplifying, we have
[tex]\dfrac{7}{14} = \dfrac{1}{2}[/tex]
On multiplying and dividing it by 3. then we have
[tex]\dfrac{1}{2} = \dfrac{1*3}{2*3} = \dfrac{3}{6}[/tex]
Thus, Option D is correct.
More about the ratio and the proportion link is given below.
https://brainly.com/question/165414
Let f(x) = x + 1 and g(x)=1/x. The graph of (f*g)(x) is shown below. What is the range of (f*g) (x)
A.all real numbers except y=-1
B.all real numbers except y=0
C.all real numbers except y=1
D.all real numbers
For this case we have the following functions:
[tex]f (x) = x + 1\\g (x) = \frac {1} {x}[/tex]
By definition we have to:
[tex](f * g) (x) = f (x) * g (x)[/tex]
So:
[tex]f (x) * g (x) = x + 1 * \frac {1} {x} = \frac {x + 1} {x}[/tex]
The domain of the function is given by the values for which the function is defined. The function is not defined for x = 0.
Then, the domain is given by all real numbers except 0.
The range is the set of all values of and valid.
Then the range is given by all reals except 1.
Answer:
Option C
Answer:
C.
Step-by-step explanation:
All real numbers except y=1
What is the square root of 5 multiplied by the square root of 5
Answer:
5
Step-by-step explanation:
Any square root multiplied by the same square root cancels out.
sqr(x) * srt(x) = x
Answer:
5
Step-by-step explanation:
Cary and his brother took a road trip together. The total number of miles they drove was more than 200. Cary drove for 50 miles. Which distances could his brother have driven? Check all that apply.
A.50 miles
B.100 miles
C.150 miles
D.200 miles
E.250 miles
Answer:
Step-by-step explanation:
The trick is not to include anything under and including 150 miles. So A B and C are not to be checked.
D and E are both true.
Answer:
Correct options are:
D.200 miles
E.250 miles
Step-by-step explanation:
Cary and his brother took a road trip together.
Cary drove for 50 miles.
Let his brother drove x miles
The total number of miles they drove was more than 200.
⇒ 50+x>200
⇒ x>200-50
⇒ x>150
i.e. Cary's brother drove for more than 150 miles
Hence, options which satisfies the above inequality are:
D.200 miles
E.250 miles
Find the ratio in simplest form 2/3 to 3/2
Answer:
4⁄9
Step-by-step explanation:
As discussed in one of my videos on my channel [USERNAME: MATHEMATICS WIZARD], whenever you are dividing mixed numbers or fractions, you multiply the first term by the divisor's multiplicative inverse [reciprocal]. So you will end up with [⅔]², which is 4⁄9. You understand?
I am joyous to assist you anytime.
Follow below steps:
To find the ratio in simplest form of 2/3 to 3/2, first identify the reciprocal relationship between the two fractions. To compare them as a ratio, we need them to have the same denominator.
Multiply the numerator and denominator of the first fraction by 2, and the numerator and the denominator of the second fraction by 3, so they both have 6 as a common denominator:
(2/3) x (2/2) = 4/6
(3/2) x (3/3) = 9/6
The ratio of 4/6 to 9/6 simplifies to 4:9, since they share the same denominator.
Therefore, the ratio of 2/3 to 3/2 in its simplest form is indeed 4:9.
Write an equation for a polynomial that has the solution set {-1,3,4}
Answer:
(x+1)(x-3)(x-4)=0 is a polynomial equaiton with the zeros mentioned (the answers could vary-means there are multiple answers)
Step-by-step explanation:
If x=-1 is a zero then (x+1) is a factor
If x=3 is a zero then (x-3) is a factor
If x=4 is a factor then (x-4) is a factor
Put it together (while the polynomial equations can be many different polynomial equations) here is one answer (x+1)(x-3)(x-4)=0
Which number can be used as a common denominator for the fractions 1/4 and 5/6
?
There is an infinite number of common denominators, but 12 is the least common denominator. You could also use any other number that is a multiple of 12, such as 24, 36, and 48.
Explanation:12 is the least common denominator because it is the smallest number that is a multiple of both 4 and 6.
[tex]4*3=12[/tex]
[tex]6*2=12[/tex]
You can also use any other multiples of 12 because they are all multiples of 4 and 6.
Multiplying an even number of negative numbers gives an answer that is
choose from:
Answer:
A positive number
Step-by-step explanation:
simplify the following radical expression 4/2•8/2•/2
[tex] \sqrt[4]{2} \times \sqrt[8]{2} \times \sqrt{2} [/tex]
Answer: [tex]\bold{\sqrt[8]{2^7} }[/tex]
Step-by-step explanation:
[tex]\sqrt[4]{2} \times \sqrt[8]{2} \times \sqrt[2]{2}\\\\={2^{\frac{1}{4}}\times 2^{\frac{1}{8}}\times 2^{\frac{1}{2}}\\\\=2^{\frac{1}{4}+\frac{1}{8}+\frac{1}{2}}\\\\=2^{\frac{2}{8}+\frac{1}{8}+\frac{4}{8}}\\\\=2^{\frac{7}{8}}\\\\\\=\large\boxed{\sqrt[8]{2^7}}[/tex]
if a sum is 100 and the different is six what is the answer
Answer:
53+47
Step-by-step explanation:
100-53 is 47. 53-47 gives you 6
Answer:
The numbers are 53 and 47.
Step-by-step explanation:
You didn't write out the problem completely, but this may be the problem:
The sum of two numbers is 100. The difference of the two numbers is 6. What are the numbers?
Let the numbers be x and y.
The sum of two numbers is 100.
x + y = 100
The difference of the two numbers is 6.
x - y = 6
We have a system of two equations in two variables.
x + y = 100
x - y = 6
Add the equations.
2x = 106
x = 53
Now substitute 53 for x in the first equation and solve for y.
53 + y = 100
Subtract 53 from both sides.
y = 47
The numbers are 53 and 47.
What is the value of x when solving the equation -2x+(-8)=2x+8 using algebra tiles?
x= -4
x= -2
x= 2
x= 4
Answer: The answer would be -4
Step-by-step explanation:
Answer:
-4
I did the exam trust me ok
In the diagram m ll n. identify all the angles that are congruent to angle 2
Answer:
A; 4,6,8
Step-by-step explanation:
Answer:
angles 4,6,8
Step-by-step explanation: Did it on i-ready and got it right.
If a translation takes triangle CAT to C’A’T’, what is A’T’?
In a translation, the image of vertex A is represented by A’T’ in the new triangle.
Explanation:In a translation, the relative positions of the points in the shape are preserved, but the shape is moved from one location to another without changing its orientation or size. So, if the translation takes triangle CAT to C’A’T’, the corresponding vertex A in the original triangle will be mapped to vertex A' in the new triangle.
Therefore, A’T’ represents the image of vertex A after the translation, and it is the corresponding vertex in the new triangle.
Learn more about Translation in Mathematics here:https://brainly.com/question/29021969
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A’T’ is the image of line segment AT after a geometric translation has been performed on triangle CAT. It will have the same length as AT and will be parallel to it.
Explanation:In the field of mathematics, particularly in geometry, a translation is a term that describes a function that moves every point a constant distance in a specified direction. The term 'A’T’' in your question refers to the line segment connecting points A’ and T’ after the translation. Assuming that a translation takes triangle CAT to C’A’T’, A’T’ will be the image of AT after the translation.
The properties of a translation are such that the length of the segment will remain the same, and the points on the segment, A and T, will simply move, maintaining their initial orientation. So, segment A’T’ will be equal in length to segment AT of the pre-image triangle CAT and will be parallel to it.
Learn more about Geometric Translation here:https://brainly.com/question/32488966
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Which expression has a negative value?
2+12
(-3)(-8)
10-(-18)
-35-5
Answer:
-35-5
Step-by-step explanation:
-35-5=-40
which is negative
plz mark my answer as the brainliest
The expression -35-5 has a negative value after adding two negative number we get negative number option fourth is correct.
What is an arithmetic operation?It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has a basic four operators that is +, -, ×, and ÷.
We have expressions:
= 2+12
= 14
= (-3)(-8)
= 24
= 10-(-18)
= 10+18
= 28
= -35-5
= -40
Thus, the expression -35-5 has a negative value after adding two negative number we get negative number option fourth is correct.
Learn more about the arithmetic operation here:
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What is the arc length when θ =pi over 3 and the radius is 5 cm? (5 points) 5 pi over 3 cm 10 pi over 3 cm 16 pi over 3 cm pi over 3 cm
Answer:
5pi over 3 cm!
Step-by-step explanation:
The formula used to find the arc length is: [tex]S= r θ[/tex] where, 'r' represents the radius and θ represents the central angle in radians.
We know that r = 5cm and θ=pi/3.
Using the formula:
s = r θ = 5cm(pi/3) = 5pi/3.
Then, the solution is: 5pi over 3 cm!
Reggie can line a football field in 120 minutes. Rosalinda can line a football field in 80 minutes. If they work together, how many minutes does it take them to line a football field?
Answer:
48 minutes
Step-by-step explanation:
Given that;
Rosalinda can line the football field in 80 minutes
Reggie can line the football field in 120 minutes
Lets assume that if they work together, they will take T minutes to line the football field
Hence;
Thus in 1 minute, Rosalina can line 1/80 of the field where as Reggie can line 1/120 of the field
[tex]\frac{1}{T} =\frac{1}{120} +\frac{1}{80} \\\\\frac{1}{T} =\frac{2+3}{240}\\\\[/tex]
The sum of the two fractions will represent the size of the field that can be lined in 1 minute.
[tex]\frac{1}{T} =\frac{5}{240} \\\\\frac{1}{T} =\frac{1}{48} \\T= 48[/tex]
The reciprocal of the sum of the two fractions will represent the time taken for both Rosalinda and Reggie to line the field.
Answer ; It will take them 48 minutes for them to line the football field
Answer:
48 minutes
Step-by-step explanation:
Reggie can line 1/120 of a football field in 1 minute while Rosalinda can line 1/80 of a football field in 1 minute.
Therefore adding the 2 fractions we get; that BOTH of them can line 1/120+1/80 of a field in 1 minute. 1/120+1/80=1/48.
1/48 of a field can be done in a minute, so it would take them 48 minutes to do 48/48 or 1 whole field.
there is a bag filled with 5 blue, 6 red and 2 green marbles. a marble is taken at random from the bag, the colour is noted and then it is replaced. another marble is taken at random. what is the probability of getting 2 blues?
Answer:
25/169
Step-by-step explanation:
We have 13 marbles ( 5+6+2)
P (blue ) = blue marbles/ total marbles = 5/13
P (blue ,blue) = 5/13* 5/13 since the marble is replaced
= 25/169
Express in scientific notation,
458,700
4,587 * 10 5
4,587 * 104
4,587 * 104
4,587 * 106
Answer:
A
Step-by-step explanation:
458,700 = 4.587 * 10^5
Answer:
A
Step-by-step explanation:
The diagram below shows a pyramid glued to a the top of a cube.Given that the slant height of the pyramid is 5.9 centimeters,
Find the total surface area of the solid rounded to the nearest square centimeter.
Plz help. Answer quick.
Answer:
The total surface area is [tex]251\ cm^{2}[/tex]
Step-by-step explanation:
we know that
The total surface area of the composite figure is equal to the lateral area of the pyramid plus the lateral area of the cube plus the area of the base of the cube
The lateral area of the pyramid is equal to the area of the four lateral triangular faces of the pyramid
The lateral area of the cube is equal to the area of the four lateral square faces of the cube
so
[tex]SA=4[\frac{1}{2}(b)(h)]+4(b^{2})+b^{2}[/tex]
we have that
[tex]b=6\ cm[/tex]
[tex]h=5.9\ cm[/tex]
substitute
[tex]SA=4[\frac{1}{2}(6)(5.9)]+4(6^{2})+6^{2}[/tex]
[tex]SA=70.8+144+36[/tex]
[tex]SA=250.8\ cm^{2}[/tex]
Round to the nearest square centimeters
[tex]250.8=251\ cm^{2}[/tex]
How to cube a fraction? Please help, thank you.
Answer:
See below.
Step-by-step explanation:
An example will illustrate the method:
(2/3)^3
= 2^3 / 3^3
= 8/27.
The ratio of the number of the Nano Club members to the Kembara Club members is 5:3.
The ratio of the Kembara Club members to the Darian Club members is 2:x.
The number of Nano Club members is 120.
1) Find the number of the Kembara Club members
2) If the number of the Darian Club members is 36 more than the number of the Kembara Club members, calculate the value of x
Answer:
Kembara Club = 72
x = 3
Step-by-step explanation:
120/5+3 = 24.
3*24 = 72
36+72= 108
108/72= 1.5
1.5*2= 3
Kembara=72
x=3
Which answer is the correct sum
Answer:
number 1
Step-by-step explanation:
2 Points
The slope of a graphed line is -9 and the y-intercept is (0, -2). What is the
slope-intercept equation of the line?
O A. y = -9x-2
O B. y=-2x - 9
O c. y=9x-2
O d. y = 2x+ 9
SUBMIT
Answer:
A. y = -9x - 2Step-by-step explanation:
The slope-intercept form of an equation of a line:
y = mx + b
m - slope
b - y-intercept (0, b)
We have the slope m = -9 and the y-intercept (0, -2) → b = -2.
Substitute:
y = -9x + (-2) = -9x - 2
Which statement is true about a number and its additive inverse?
A. Their product is always one.
B. Their sum is always one.
C. They are always reciprocals of each other.
D. Their sum is always zero.
Answer:
Option D is correct.
Step-by-step explanation:
The additive inverse of a number is the same number with the negative sign
i.e. if we have a number 1 then it's additive inverse would be -1
So if we add both the number and its additive inverse the answer would be zero.
1+(-1) = 0
So, Option D their sum is always zero is correct.
Answer: Option D
Their sum is always zero
Step-by-step explanation:
Given any number x, the additive inverse of x is -x.
For example, the additive inverse of 3 is - 3, the additive inverse of 2.2 is -2.2.
In this way, note that adding a number with the additive inverse of this number will always result in the number zero.
[tex]x + (-x) = 0[/tex]
Therefore, the correct option is option D
Calculate the mass of 5000 spherical lead shots each of diameter 3mm, given that 1 cm cubed of lead weighs 11.4g.
1. The first step to answering this question is to find the volume of a single spherical lead shot and then multiply this by 5000 to find the total volume of 5000 lead shots.
So, given that the lead shots are spherical, we must use the formula for the volume of a sphere:
V = (4/3)πr^3
Given that the diameter is 3mm, we can find the radius by dividing this by 2:
r = 3/2 = 1.5 mm
From here, there are two ways to proceed; we can either covert the radius into cm, or we can continue with the mm value and then convert the resulting volume in cubic mm into cubic cm (since we are given that 1 cm cubed of lead weighs 11.4g, we can already tell that we will have to finish with a volume in cubic cm). I will show both these methods as a) and b), respectively.
a) If there are 10 mm in 1 cm, and we have a radius of 1.5 mm, then to convert this into cm we need to simply divide by 10:
1.5 mm = 1.5/10 = 0.15 cm
Now that we have our radius in cm form, we can substitute this into the formula for the volume of a sphere that we specified at the very beginning:
V = (4/3)πr^3
V = (4/3)π(0.15)^3
V = (9/2000)π cm cubed, or
0.0045π cm cubed (in decimal form)
Now that we have the volume of one lead shot, all we need to do is multiply this by 5000 to find the volume of 5000 lead shots:
0.0045π*5000 = 22.5π cm cubed
Since we already have the total volume in cm cubed, there is no need to do any more conversions.
b) In this method, we will use radius = 1.5 mm and substitute this into the general formula for the volume of a sphere again:
V = (4/3)πr^3
V = (4/3)π(1.5)^3
V = (9/2)π mm cubed, or
4.5π mm cubed (in decimal form)
Thus, to calculate the volume of 5000 lead shots, we must multiply this value by 5000:
4.5π*5000 = 22500π mm cubed
Now comes the part where we must convert this into cubic cm; to do this we simply take the value in cubic mm and divide it by 10^3 (ie. 1000). Thus:
22500π/1000 = 22.5π cm cubed
As you can see, we end up with the same answer as in a). The key here is to remember that you need to convert, so maybe write a note to yourself at the start of the question and pay close attention to the different units in both the question and your working.
2. Now that we know that the volume of 5000 spherical lead shots is 22.5π cm cubed, we need to calculate their mass.
We are given that 1 cm cubed of lead weighs 11.4 g, thus to calculate the mass of 22.5π cm cubed of lead, we need to multiply this value by 11.4. Thus:
Mass = 22.5π*11.4
= 256.5π g
Note that this is the answer in exact form. I wasn't entirely sure about the rounding required or the value of π that you were specified to use (eg. exact, 22/7, 3.14), so if you wanted me to edit the answer to reflect that or had any questions, feel free to comment below.
Explain the process for factoring each of the following: a. x^2-25 b. 3x^2-12x-15 c. x^3+2x^2+3x+6
Answer:
a. (x+5)(x-5)
b. 3(x+1)(x-5)
c. (x^2+3)(x+2)
Step-by-step explanation:
a. x^2-25
The given expression can be factorized using the formula:
[tex]a^{2} -b^{2} =(a+b)(a-b)\\So,\\x^{2} -25\\=(x)^{2}-(5)^{2}\\=(x+5)(x-5)[/tex]
b. 3x^2-12x-15
We can see that 3 is common in all terms
=3(x^2-4x-5)
In order to make factors, the constant will be multiplied by the co-efficient of highest degree variable
So,
[tex]3[x^{2} -4x-5]\\=3[x^{2}-5x+x-5]\\=3[x(x-5)+1(x-5)]\\=3(x+1)(x-5)[/tex]
c. x^3+2x^2+3x+6
Combining the first and second pair of terms
[tex]x^{3}+2x^{2}+3x+6 \\=[x^{3}+2x^{2}]+[3x+6]\\Taking\ x^{2}\ common\ from\ first\ two\ terms\\=x^{2} (x+2)+3(x+2)\\=(x^{2}+3)(x+2)[/tex]
Find the difference. Express your answer in
simplest form.
g+1/g+2 - (5g+4)/g+2
Click on the correct answer.
A.-4g + 5/2g+4
B. -4g+5/g+2. C. 6g – 3/g+2
D. 6g - 3/2g +4
Answer:
-4g-3
------------
g+2
Step-by-step explanation:
g+1 5g+4
------------- - ------------------
g+2 g+2
Since the denominators are the same, subtract the numerators
g+1 - (5g+4)
Distribute the negative sign
g+1 -5g-4
-4g-3
Put this back over the denominator
-4g-3
------------
g+2
Answer:
-4g-3, g+2
Step-by-step explanation:
A bacteria population doubles every 4 hours. There are currently 2,000 bacteria in a restricted area. If t represents the time, in hours, and P(t) is the population of bacteria with respect to time, about how many bacteria will there be in 30 minutes?
The bacteria population doubles in 4 hours.
So, in 1 hour it increases by x/4 of its population, where x is population.
So in 1/2 hours or 30 minutes, the increase will be x/4 × 1/2 = x/8
=> if we start with 4000 bacterias, population increase after 30 minutes is 4000× 1/8 = 500
So, 500 more bacterias were added
Total bacterias = 4000+500 = 4500 bacterias
help please, its math and i do not understand it
Using the law of cosines:
Cos (angle) = Adjacent Leg / Hypotenuse
Cos(28) = x / 64
X = 64 * cos(28)
x = 56.5 km
A=8 , b=15 ,c= The Pythagorean theorem
Final answer:
Using the Pythagorean theorem with the given lengths of the sides a=8 and b=15, the hypotenuse c is found to be 17 units.
Explanation:
The question involves finding the length of the hypotenuse c in a right triangle using the Pythagorean theorem, which states that in a right triangle the square of the length of the hypotenuse (c) is equal to the sum of the squares of the lengths of the other two sides (a and b). Given that a = 8 and b = 15, we can apply the theorem:
c² = a² + b²
c² = 8² + 15²
c² = 64 + 225
c² = 289
c = √289
c = 17
Therefore, the length of the hypotenuse c is 17 units.