Answer:
$10.5
Step-by-step explanation:
88-4 = $84
84/8 = 10.5
What is magma? a. The molten mixture of rock-forming substances, gases, and water from the mantle.. c. Hardened lava on the surface of the Earth. b. Liquid rock that reaches the surface. d. All of the above Please select the best answer from the choices provided A B C D
Answer: A. The molten mixture of rock-forming substances, gases, and water from the mantle
Magma is a mass of molten rock that is found in the deepest layers of the Earth at high temperature and pressure, and that can flow out through a volcano.
The composition of this mass is a mixture of liquids, volatile and solids that when they reach the surface in an eruption becomes lava, which when cooled crystallizes and gives rise to the formation of igneous rocks.
Sara had some candy in her pocket. She first kept 2 pieces herself and then gave her 5 children 3 pieces each. If she didn't have any candy left over, how many pieces of candy did she start with
17 pieces. She had two and she had to have 15 to give to the children. If each child got 3 and there is 5. This turns into 3*5=15. Then you would add 15+2 to get 17
Sara initially had 17 candies. This computation is based on the 2 pieces she kept for herself and the three pieces of candy each of her five children received.
Explanation:The subject of this question is mathematics, specifically it deals with basic arithmetic and problem solving. According to the problem, Sara kept 2 pieces of candy for herself and then gave each of her 5 children 3 pieces. In mathematical terms, this can be represented as an equation: 2 (pieces Sara kept) + 5 (children) * 3 (pieces each child received) = Total pieces of candy Sara had initially.
To solve this equation, first multiply the number of children by the pieces each received: 5 * 3 = 15. Then add the pieces Sara kept: 2 + 15 = 17. Therefore, Sara initially had 17 pieces of candy.
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Simplify the expression.
the quantity x to the three halves power end quantity to the power of 6
A. x to the power of one ninth
B. x to the power of one sixth
C. x to the power of six
D. x to the power of nine
Answer:
D. x to the power of nine
Step-by-step explanation:
The applicable rule of exponents is ...
(x^a)^b = x^(ab)
You have a=3/2, b=6, so ab = 3/2·6 = 9.
(x^(3/2))^6 = x^(3/2·6) = x^9
Find the sun and express it in simplest form.(-3s-4c+1)+(-3s+3c)
Answer:
-6s-c+1
Step-by-step explanation:
(-3s-4c+1)+(-3s+3c)
We have been given the above expression. To find the sum, we simply collect the like terms and combine them;
(-3s-4c+1)+(-3s+3c) = -3s + -3s -4c + 3c + 1
-3s + -3s -4c + 3c + 1 = -3s - 3s + 3c - 4c + 1
-3s - 3s + 3c - 4c + 1 = -6s - c + 1
Therefore;
(-3s-4c+1)+(-3s+3c) = -6s-c+1
Which expressions are equivalent to the one below? Check all that apply. log2 16 + log2 16 A. log2(28) B. 8 C. log 256 D. log2 256
The correct equivalent expression is D. [tex]\log_2{256}[/tex].
The given expression is:
[tex]\log_2{16} + \log_2{16}[/tex]
First, we need to simplify the given expression using properties of logarithms.
Using the property:
[tex]\log_b{m} + \log_b{n} = \log_b(m \times n)[/tex]
We can rewrite the given expression as:
[tex]\log_2{16} + \log_2{16} = \log_2{(16 \times 16)} = \log_2{256}[/tex]
Now we can analyze the options given:
A. [tex]\log_2{28}[/tex]: This is not equivalent because 28 is not the same as 256.
B. 8: This is not in logarithmic form and not equivalent to the simplified expression.
C. [tex]\log{256}[/tex]: This is not equivalent because the base here is 10 (common logarithm), while the given expression has a base of 2.
D. [tex]\log_2{256}[/tex]: This is correct because our simplified form is exactly [tex]\log_2{256}[/tex].
Which of the following statements is true concerning triangle XYZ below?
Answer:
The correct answer to this problem is the second option: YZ is the longest side.
Step-by-step explanation:
In order to solve this problem, we need to understand the relationship between angle measure and side lengths in a triangle.
In a triangle, the longest side is located across from the largest angle measure, the smallest side is located across from the smallest angle, and the middle length side is located across from the medium sized angle.
Using this knowledge, we can conclude that since XYZ is the smallest angle, XZ must be the smallest side. We can also state that since YXZ is the largest angle, YZ is the longest side.
Looking at the answer options, the only choice that aligns with this information is the second option: YZ is the longest side, and thus we can conclude that this is the correct answer.
Hope this helps!
YZ is the longest side
Step-by-step explanation:
Based on the line of best fit estimate what the income might be for 2006
Answer:
190000 is the best answer in my opinion because by 2006 it is more then 160000 but it is less then 200000
Step-by-step explanation:
Two linear equations are shown. What is the solution to the system of equations? (7, 4) (9, 7)
Answer:
[7, 13/3]
Step-by-step explanation:
A data value is considered _______ if its z-score is less than minus2 or greater than 2.
Answer:
Unusual
Step-by-step explanation:
we know that
The z-score is a measure of how close the given data point is to the mean of the values given with the standard deviation
so
if its z-score is greater than or equal to -2, or less than or equal to 2., then the data value is considered ordinary
if its z-score is less than -2 or greater than 2, then the data value is considered unusual
A data value is considered an outlier if its z-score is less than -2 or greater than 2.
Z-scores are a statistical measure that standardizes data, enabling comparisons across different datasets.
A z-score tells us how many standard deviations a data point is from the mean.
When a z-score is below -2 or above 2, it suggests that the data point is significantly distant from the mean of the dataset.
This indicates that the data point is an extreme observation, differing substantially from the rest of the data.
Outliers can be caused by various factors, such as measurement errors, data entry mistakes, or genuine anomalies in the underlying data. Identifying and handling outliers is crucial for robust statistical analysis and modeling.
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What's the difference between:
x≥0
And
Nonnegative integer.
?
Answer:
none, if x is an integerx may be a real number, hence not necessarily an integerStep-by-step explanation:
x ≥ 0 means x is non-negative, but it does not mean x is an integer. An additional restriction would need to be applied for x to be a non-negative integer.
Which relationship describes angles 1 and 2?
Select each correct answer.
complementary angles
supplementary angles
vertical angles
adjacent angles
Answer:
complementary angles
Step-by-step explanation:
∠1 and ∠2 form a right angle and are complementary, that is they sum to 90°
A ferry takes several trips between points A and B. It moves at a constant speed of 0.35 miles/minute and takes the same route on each trip. The total duration of a round trip from point A to point B and back is 80 minutes, ignoring the time spent stopped at point B. If d is the ferry’s distance from point A in miles and t is the time in minutes, which equation models the ferry’s distance from point A for the duration of the trip?
Answer:
D. -|0.35t -14| +14
Step-by-step explanation:
The problem statement is asking for an expression for distance in miles, so the constants in the expression will be miles. In the time it takes to get to point B (40 minutes), the ferry has gone (0.35 mi/min)×(40 min) = 14 mi. Hence the maximum value of the function must be 14. The only function with that characteristic is the one of selection D.
Katie invested $33,750 at 11.17% compounded continuously.
What will Katie's account balance be in 10 years?
Using the continuous compounding formula A = Pe^rt, Katie's account balance after 10 years will be approximately $103,204, with her initial investment of $33,750 at an annual interest rate of 11.17%.
Explanation:To calculate what Katie's account balance will be in 10 years, with an investment of $33,750 at 11.17% compounded continuously, we use the formula for continuous compounding:
A = Pert
Where:
A is the future value of the investmentP is the principal amount ($33,750)r is the annual interest rate (11.17% or 0.1117 as a decimal)t is the time in years (10 years)e is the base of the natural logarithm (approximately 2.71828)Plugging in the values we get:
A = $33,750 * e(0.1117 * 10)
Calculating the exponent:
A = $33,750 * e1.117
Calculating the future value:
A = $33,750 * 3.0579 (approximate value of e1.117)
A = $103,204
Katie's account balance after 10 years will be approximately $103,204.
What is the factorization of the polynomial below?
4x^2 - 25
[tex]4x^2 - 25=(2x-5)(2x+5)[/tex]
please help asap urgent
brainliest
Answer:
6 unit cubesStep-by-step explanation:
Look at the picture.
Pasion wants to rent a car to take a trip and has a budget of $75. There is a fixed rental fee of $25 and a daily fee of $10. Write an inequality that would be used to solve for the maximum number of days for which Pasion can rent the car on her budget.
Answer:
The maximum number of days is 5
Step-by-step explanation:
Let
x ----> the number of days
y ---> the total cost to rent a car in dollars
we know that
The fixed rental fee plus the daily fee multiplied by the number of days must be less than or equal to Pasion's budget
so
The inequality that represent this situation is
[tex]25+10x\leq 75[/tex]
Solve the inequality for x
Subtract 25 both sides
[tex]10x\leq 75-25[/tex]
[tex]10x\leq 50[/tex]
Divide by 10 both sides
[tex]x\leq 5\ days[/tex]
therefore
The maximum number of days is 5
I’ll Mark Brainliest, please help me!!
The given line passes through points (-4,-3) and (4,1). What is the equation, in point-slope form, of the line that is perpendicular to the given line and passes through the point (-4,3)?
y - 3 = __________ (x+4)
The angle between a 180-pound force F and AB= 5i + 2j is 30.Find the work done by F in moving and object from A to B.
Answer:
[tex]W=839.464\ ft*lbf[/tex]
Step-by-step explanation:
The work done is the product of the magnitude of the force applied to the object by the magnitude of the displacement of the object by the cosine of the angle between the force and direction of the displacement. This is:
[tex]W=|F|*|r|cos(\theta)[/tex]
In this case
[tex]\theta=30\°[/tex]
|F|=180 pound force
The magnitude of vector AB is:
[tex]|r|= \sqrt{5^2 + 2^2}\\\\|r|= \sqrt{29}\ fr[/tex]
Finally the work is:
[tex]W=180*\sqrt{29}*cos(30\°)[/tex]
[tex]W=839.464\ ft*lbf[/tex]
Answer:
the answer is option 1, A
Step-by-step explanation:
Please answer this question for 25 points and brainliest!!
Answer:
64 cm²
Step-by-step explanation:
Suppose the original paper was x cm on a side. Then the original perimeter was 4x.
When the square is folded in half, two of the sides are now x/2, so the perimeter is ...
x + x/2 + x + x/2 = 3x
If 3x = 24 cm, then x = 8 cm.
The area of the original paper is ...
A = x² = (8 cm)² = 64 cm²
Given one zero of the polynomial function, find the other zeros.
f(x)=2x^3+3x^2-3x-2; -2
Answer:
{-1/2, 1}
Step-by-step explanation:
You can divide the given polynomial by the factor (x +2) to find the remaining quadratic. That can be factored in the usual way to find the remaining zeros, or other means can be used. Such "other means" include graphing and the use of the quadratic formula.
The first attachment shows the synthetic division of f(x) by (x+2). The quotient is 2x^2 -x -1, which factors as ...
2x^2 -x -1 = (2x +1)(x -1)
The zeros are the values of x that make these factors zero: -1/2, +1.
_____
My favorite way to find the roots of any higher degree polynomial is to use a graphing calculator. The second attachment shows that method.
We can find other zeros for the given polynomial by polynomial factoring or polynomial division. Upon dividing the given polynomial by (x+2), we get another polynomial. The zeros of this second polynomial can be found using the quadratic formula; getting the two zeros as x = 1 and x = -0.5.
Explanation:Given a polynomial [tex]f(x) = 2x^3 + 3x^2 - 3x - 2[/tex]and one of its zeros is -2; we can find the other zeros by polynomial factoring or polynomial division. First, divide the entire polynomial by (x+2) because -2 is one of the zeros. So we end up with 2x^2 - x - 1 = 0.
Now use the quadratic formula to find the remaining zeros: [tex]x = [-b\±\sqrt(b^2 - 4ac)] / (2a).[/tex]By substituting the constants from the factored polynomial equation, we will get [tex]x = [-(-1)\±\sqrt((-1)^2 - 4*2*(-1))] / (2*2) = [1\±\sqrt(1 + 8)] / 4.[/tex]This simplifies to [tex]x = [1\±\sqrt(9)] / 4 = [1\±3] /4.[/tex] Hence our two more zeros are x = 1 and x = -0.5.
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Last week the price of oranges at the farmers market was 1.75 per pound.This week the price has decreased by 20%.What is the price of oranges this week.
Answer:
1.40
Step-by-step explanation:
Last week, the price of oranges at the farmers market was 1.75
This week, the price has reduced by 20%
20% of 1.75 = 0.2 × 1.75 = 0.35
The price of the oranges this week is 1.75 - 0.35 = 1.40
Alexander throws a baseball straight up into the air with an initial vertical velocity of 48 ft/s
from an initial height of 3.4 ft. Which equation can be used to find the time, T, it takes for the
ball to reach the ground?
[tex]\bf ~~~~~~\textit{initial velocity} \\\\ \begin{array}{llll} ~~~~~~\textit{in feet} \\\\ h(t) = -16t^2+v_ot+h_o \\\\ ~~~~~~\textit{in meters} \\\\ h(t) = -4.9t^2+v_ot+h_o \end{array} \quad \begin{cases} v_o=\stackrel{48}{\textit{initial velocity of the object}}\\\\ h_o=\stackrel{3.4}{\textit{initial height of the object}}\\\\ h=\stackrel{}{\textit{height of the object at "t" seconds}} \end{cases} \\\\[-0.35em] \rule{34em}{0.25pt}[/tex]
[tex]\bf h(t)=-16t^2+48t+3.4\implies \stackrel{\textit{when it hits the ground}}{\stackrel{h(t)}{0}=-16t^2+48t+3.4}[/tex]
Check the picture below.
Simplify the expression. the quantity x to the three halves power end quantity to the power of 6
Answer:
x^9
Step-by-step explanation:
The rule of exponents that applies is ...
(a^b)^c = a^(b·c)
For your problem, you have a=x, b=(3/2), c=6, so ...
(x^(3/2))^6 = x^(3/2·6) = x^9
Answer:
[tex]x^9[/tex]
Step-by-step explanation:
We are given that an expression
[tex]\left\{(x)^{\frac{3}{2}\right\}^6[/tex]
We have to simplify the given expression
In order to simplify the expression we will use given below rule
We know that [tex](a^b)^c= a^{b\cdot c}[/tex]
Using this rule
[tex](x)^{\frac{3}{2}\cdot 6}[/tex]
[tex](x)^{3\cdot 3}[/tex]
[tex]x^9[/tex]
[tex]\left\{(x)^{\frac{3}{2}\right\}^6=x^9[/tex]
Can someone help please
ANSWER
[tex]3 \: radians[/tex]
EXPLANATION
The formula for the calculating the length of an arc is
[tex]l = r \theta[/tex]
where theta is in radians.
From the diagram
[tex]l = 12cm[/tex]
[tex]r = 4cm[/tex]
We substitute the values to obtain;
[tex]4\theta = 12[/tex]
Divide both sides by 4 to get;
[tex]\theta = \frac{12}{4} [/tex]
[tex]\theta = 3 \: radians[/tex]
The area of a rectangle is 38.25 square yards and its base is 9 yards. What is the height? Do not round your answer.
h = ________ yd
Answer:
4.25 yards
Step-by-step explanation:
Area of rectangle = Base x Height
or
Height = Area of Rectangle ÷ Base
In this case, Area =38.25 sq yards and Base = 9 yards
Height = 38.25 ÷ 9 = 4.25 yards
Identify the exponent in the term –3x2. A. x B. 2 C. minus sign (–) D. 3
Answer:
B. 2
Step-by-step explanation:
Assuming the term is meant to look like this: -3x², then the answer is B.2. An exponent is a superscript (super means above, script means writing) that tells you to multiply something by itself.
In this case, -3x² means -3·x·x
If it was written as (-3x)², it would mean (-3x)·(-3x)
Answer:
2
Step-by-step explanation:
The exponent is raised to the power of any variable [smaller number].
I am joyous to assist you anytime.
How do the graphs of the functions f(x)=[tex](\frac{3}{2})^x[/tex] and g(x)=[tex](\frac{2}{3})^x[/tex] compare?
{Explain your answer.}
Show your work!
Step-by-Step calculations required.
No spam answers, please!
Thank you!
Step-by-step explanation:
f(x) = (3/2)ˣ
g(x) = (2/3)ˣ
These are examples of exponential equations:
y = a bˣ
If b > 1, the equation is exponential growth.
If 0 < b < 1, the equation is exponential decay.
So f(x) is an example of exponential growth, and g(x) is an example of exponential decay.
Also, 2/3 is the inverse of 3/2, so:
g(x) = (3/2)^(-x)
So more specifically, f(x) and g(x) are reflections of each other across the y-axis.
Find the missing factor. Write your answer in exponential form.
1^9 = 1^7 • = _
Answer:
[tex]1^2[/tex]
Step-by-step explanation:
The number 1 is called the base. When we multiply like bases, we add the exponents. So in order to get 1^9, we will multiply 1^7 by 1^2 because 7+2=9.
Answer:
The answer is [tex]1^{2}[/tex]
Step-by-step explanation:
Using the formula: [tex]a^{m}+a^{n}= a^{m+n}[/tex]
[tex]1^{9}=1^{7}*1^{2}=1^{7+2=9} =1^{9}[/tex]
An arrow is shot vertically upward at a rate of 180ft/s. Use the projectile formula h=?16t2+v0t to determine at what time(s), in seconds, the arrow is at a height of 420ft. Round your answer(s) to the nearest tenth of a second.
The answer is:
[tex]t_1=3.60s\\t_2=7.94s[/tex]
Time equal to 3.30 seconds when the arrow was going up.
Time time equal to 7.94 seconds when the arrow was going down.
Why?To solve the problem, we need to solve the quadratic equation and find the value of values of time where the height of the arrow is 420 feet.
Also, we are given some information, we need to substitute it and then use the quadratic equation.
The equation is:
[tex]h=-16t^{2}+vot\\\\-16t^{2}+vot-h=0[/tex]
Substituting the given information we have:
[tex]-16t^{2}+vot-h=0[/tex]
[tex]-16t^{2}+180\frac{ft}{s} t-420=0[/tex]
We have a quadratic equation where:
[tex]a=-16\\b=180\\c=-420[/tex]
Now, using the quadratic equation to find the value or values of "t", we have:
[tex]\frac{-b+-\sqrt{b^{2}-4ac } }{2a}[/tex]
[tex]\frac{-180+-\sqrt{180^{2}-4*-16*-420 } }{2*-16}=\frac{-180+-\sqrt{32400-26880 } }{-32}\\\\\frac{-180+-\sqrt{32400-26880}}{-32}=\frac{-180+-\sqrt{5520}}{-32} \\\\\frac{-180+-\sqrt{5520}}{-32}=\frac{-180+-(74.29)}{-32}\\\\t_1=\frac{-180+(74.29)}{-32}=3.30\\\\t_2=\frac{-180-(74.29)}{-32}=7.94[/tex]
Hence, we have two positive values of time, it means that there are two moments of time where the height of the arrow is equal to 420 feet, those times are:
[tex]t_1=3.60s\\t_2=7.94s[/tex]
Time equal to 3.30 seconds when the arrow was going up.
Time equal to 7.94 seconds when the arrow was going down.
Have a nice day!
Answer:
3.3secs, 7.9secs
Step-by-step explanation:
We are looking for the number of seconds it takes the arrow to reach a height of 420ft. We are given the projectile formula h=−16t2+v0t, where h is the height, in feet, and t is the time, in seconds. We can substitute the initial velocity v0=180 and desired height h=420 to find
420=−16t2+180t
Rewriting this quadratic equation in standard form, we have
16t2−180t+420=0
Now that the equation is in standard form, at2+bt+c=0, we can identify the coefficients a=16, b=−180, and c=420. Substituting these into the quadratic formula, we have
t=−b±b2−4ac‾‾‾‾‾‾‾‾√2a=−(−180)±(−180)2−4(16)(420)‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾√2(16)=180±5520‾‾‾‾‾√32
The approximate values for t are
t=≈180+5520‾‾‾‾‾√327.9andt=≈180−5520‾‾‾‾‾√323.3
The arrow will go up and then fall down. As the arrow goes up, it will reach 420ft after approximately 3.3s. It will also pass that height on the way down at approximately 7.9s.
I don’t get this one
Answer:
Option A is correct.
Step-by-step explanation:
No of white cars: 25
No of blue cars : 17
Total number of white and blue cars = 25 + 17 = 42
No of silvers cars: 21
No of red cars: 9
Total number of silver and red cars = 21+9 = 30
No of white and blue cars more than silver and red cars
=Total number of white and blue cars - Total number of silver and red cars
=42 - 30
= 12 cars
So, Option A is correct.