Answer:
3x − y = 5,
2x + 3y = −15
Which value can the first equation be multiplied by to form opposite values on the y-term? 3
The solution to the system of equations is (0, -5).
Multiply by 3.
Solution is x=0, y=-5.
The coefficients of y are -1 and 3.
If we multiply the first equation by 3. Then the coefficients of y will be 3 and -3. They are opposite values.
After multiplying the first equation by 3 we get:
[tex]3(3x - y) = 3(5)\\9x-3y=15[/tex]
Then we add it with the second equation.
[tex]9x-3y+2x+3y=15-15\\11x=0\\x=0[/tex]
Using x=0 in 3x - y = 5 we get:
[tex]3(0) - y = 5\\0-y=5\\y=-5\\[/tex]
Solution is x=0, y=-5.
Learn more: https://brainly.com/question/13769924
what is the difference of the fractions below? 7x/5-x/5
Answer:
[tex]\frac{6x}{5}[/tex]
Step-by-step explanation:
Given
[tex]\frac{7x}{5}[/tex] - [tex]\frac{x}{5}[/tex]
Since both fractions have a common denominator, subtract the numerators leaving the denominator.
= [tex]\frac{7x-x}{5}[/tex]
= [tex]\frac{6x}{5}[/tex]
Answer: 6x/5
Step-by-step explanation:
Please help are these answers correct.
Answer:
answer sheet please give me brainly
Step-by-step explanation:
1. the answer is -1 • (7r + 6)
2. that answer is right
3. that answer is right
4. the answer is 3h - 16
5. the answer is 8 • (6 - 7s)
6. that answer is right
7. the answer is -9 • (6r + 5)
8. the answer is -14r - 43
9. the answer is 49z - 18
10. the answer is 14 + b
Answer:
tttttt
Step-by-step explanation:
ttytddfgfdgfgfdg
Which describes how triangle FGH could be transformed to triangle F prime G prime H prime in two steps? On a coordinate plane, triangle F G H has points (negative 2, 1), (negative 3, 3), (0, 1). Triangle F prime G prime H prime has points (negative 8, negative 4), (negative 12, negative 12), (0, negative 4). Which identifies the transformation that occurred after the dilation? a dilation by a scale factor of 3 and then a reflection across the x-axis a dilation by a scale factor of 3 and then a 180 degrees rotation about the origin a dilation by a scale factor of 4 and then a reflection across the x-axis a dilation by a scale factor of 4 and then a 180 degrees rotation about the origin
Answer:
A dilation by a scale factor of 4 and then a reflection across the x-axisExplanation:
1. Vertices of triangle FGH:
F: (-2,1)G: (-3,3)H: (0,1)2. Vertices of triangle F'G'H':
F': (-8,-4)G': (-12,-12)H': (0, -4)3. Solution:
Look at the coordinates of the point H and H': to transform (0,1) to (0,-4) you can muliply each coordinate by 4 and then change the y-coordinate from 4 to -4. That is a dilation by a scale factor of 4 and a reflection across the x-axis. This is the proof:
Rule for a dilation by a scale factor of 4: (x,y) → 4(x,y)(0,1) → 4(0,1) = (0,4)
Rule for a reflection across the x-axis:{ (x,y) → (x, -y)(0,4) → (0,-4)
Verfiy the transformations of the other vertices with the same rule:
Dilation by a scale factor of 4: multiply each coordinate by 44(-2,1) → (-8,4)
4(-3,3) → (-12,12)
Relfection across the x-axis: keep the x-coordinate and negate the y-coordinate(-8,4) → (-8,-4) ⇒ F'
(-12,12) → (-12,-12) ⇒ G'
Therefore, the three points follow the rules for a dilation by a scale factor of 4 and then a reflection across the x-axis.
Answer:a dilation by a scale factor of 4 and then a reflection across the x-axis
Step-by-step explanation:
If 300% of 0.18 is equivalent to 20% of b, then b is equivalent to what number?
To calculate the value of b, we equate 300% of 0.18 to 20% of b, convert percentages to decimals, and solve for b, resulting in b being 2.7.
Explanation:To find the value of b when 300% of 0.18 is equivalent to 20% of b, we can set up the equation as follows:
300% × 0.18 = 20% × b
Converting percentages to decimal form gives:
3 × 0.18 = 0.2 × b
Now, we will multiply the numbers:
0.54 = 0.2b
To find the value of b, we divide both sides by 0.2:
b = \( \frac{0.54}{0.2} \)
b = 2.7
Therefore, the value of b is 2.7.
Please help will give BRAINLIEST.
Triangle RST is similar to
triangle RVW.
What is the value of din millimeters?
A)
27 mm
B)
12 mm
C)
9 mm
D)
13 mm
Answer: B) 12
Step-by-step explanation: In order to solve this you have to know the scale factor between the two triangles. In order to do that you just need to take a similar side between the two triangles and divide them. For example:
10 / 15 = .6666
This is RW divided by RT
Now that you have the scale factor, you just need to multiply it by 18 to get WV.
18 x .666666 = 12
The value of d in millimeters is 12 mm and this can be determined by using the similar triangle property.
Given :
Triangle RST is similar to triangle RVW.The length of the segment RW = 10 mmThe length of the segment WT = 5 mmThe length of the segment TS = 18 mmThe following steps can be used in order to determine the value of d in millimeters:
Step 1 - The similar triangle property can be used in order to determine the value of d in millimeters.
Step 2 - Apply the similar triangle property on the triangle RST and triangle RVW.
[tex]\rm \dfrac{RW}{WV}=\dfrac{RT}{TS}[/tex]
Step 3 - Substitute the values of the known terms in the above expression.
[tex]\rm \dfrac{10}{d}=\dfrac{15}{18}[/tex]
Step 4 - Simplify the above expression.
[tex]\rm d = \dfrac{10}{15}\times 18[/tex]
d = 12 mm
For more information, refer to the link given below:
https://brainly.com/question/25277954
The table below shows the times and task that must be done to host a party at your house.
Task
Prerequisites
Time
hours
0
0.5
None
0.3
None
25.
AB
Start
A. Create a guest list
B. Create a list of snack foods, party
favors, and decorations
C. Purchase/Male Invitations, snacks,
decorations, party favors.
D. Mail invitations at the post office
E. Wait for response to the RSVP on
the invitation
F. Clean the apartment
G. Decorate for the party.
H. Cook and set out snades
I Get Dressed and Ready
J. Host the Party.
K. Clean Up.
Finish
1.0
36.0
3.5
1.2
UA
GH
1.0
3.5
How long does it take to create the guest list?
O 0.5 hours
1 hour
0.3 hours
1.5 hours
Answer: A) 0.5 Hours
I got it correct!
Which point is the centroid of triangle JKL?
A. Point K
B. Point M
C. Point R
D. Point J
Answer:
The answer is C. Point R.
Step-by-step explanation:
It is point R because that is where all the lines meet in the center.
What do i do on this.
Answer:
Step-by-step explanation:
[tex]\frac{6-4x}{y^{4}}=\frac{6-4*(-7)}{2^{4}}\\\\=\frac{6+28}{16}\\\\=\frac{34}{16}\\\\=\frac{17}{8}\\\\=2\frac{1}{8}[/tex]
Justin needs to make 80 illustrations for an art book. He has made 40% of the
illustrations. Make a bar model to show his progress. How many illustrations does
he still need to make? Explain.
Answer: the answer is
5000
Step-by-step explanation:
Answer:40%
Step-by-step explanation:
HELP PLEASE!
Evaluate the expression when x= 4 and y = 9.
5xy + 9x
——
y
Answer:5×4×9/9 +(9(4))
=180/9 + (36)
= 20+36
=56
Thank You
Answer:
24
Step-by-step explanation:
The solution to the question above is solved thus:
[tex] \frac{5xy + 9x}{y} [/tex]
Given that x = 4 and y = 9, substitute the values in the question thus:
[tex] \frac{5(4)(9) + 9(4)}{9} [/tex]
[tex] = \frac{5 \times 4 \times 9 + 9 \times 4}{9} [/tex]
[tex] = \frac{180 + 36}{9} [/tex]
[tex] = \frac{216}{9} [/tex]
[tex] = 24[/tex]
Stiind ca triunghiurile sunt asemenea si c= 5 calculati lungimea laturilor indicate
a=?
b=?
c=?
Answer:
[tex] a = 8 \\ b = 10 \\ c = 5[/tex]
Step-by-step explanation:
[tex]{c}^{2} = {3}^{2} + {4}^{2} \\ c = 5 \\ \frac{3}{6} = \frac{4}{a} = \frac{5}{b} \\ a = 8 \: \: \: \: \: b = 10[/tex]
Answer:
[tex]a=8\\b=10\\c=5[/tex]
Step-by-step explanation:
In the given image, you can observe we have two right triangles.
Also, we know by given that those triangles are similar, which means their sides are proportional and their angles are congruent.
If the triangles are similar, we can define the following proportion between sides.
[tex]\frac{4}{a} =\frac{3}{6}\\ 24=3a\\a=\frac{24}{3}\\ a=8[/tex]
Now we use the Pythagorean's Theorem to find each hypothenuse.
[tex]c^{2} =4^{2} +3^{2}\\ c=\sqrt{16+9}=\sqrt{25} \\ c=5[/tex]
[tex]b^{2} =8^{2} +6^{2}\\ b=\sqrt{64+36}=\sqrt{100}\\ b=10[/tex]
Therefore, the missing sides are
[tex]a=8\\b=10\\c=5[/tex]
1. In the diagram, AA'B'C' is an image of AABC. Which rule describes this translation?
O(x, y) → (x-5,y-3)
O(x, y) + (x + 5, y + 3)
O(x,y) → (x-3, y-5)
O(x, y) (x+3, y + 5)
Option B: [tex](x, y) \rightarrow(x+5, y+3)[/tex] is the rule for the translation
Explanation:
The coordinates of A,B,C are [tex](-3,2)[/tex] ,[tex](-3,-3)[/tex] , [tex](0,-2)[/tex]
The coordinates of A',B',C' are [tex](2,5)[/tex] , [tex](2,0)[/tex] , [tex](5,1)[/tex]
We need to determine the rule for the translation
The rule for the translation is given by
[tex]P(x, y) \rightarrow P^{\prime}(x+a, y+b)[/tex]
Let us determine the translation from A to A'
[tex]A(-3,2)\rightarrow A^{\prime}(-3+a, 2+b)\rightarrow A'(2,5)[/tex]
Thus, we have,
[tex]\begin{aligned}-3+a &=2 \\a &=5\end{aligned}[/tex] and [tex]\begin{array}{r}2+b=5 \\b=3\end{array}[/tex]
Thus, the rule is given by
[tex](x, y) \rightarrow(x+5, y+3)[/tex]
Therefore, Option B is the correct answer.
Answer:
its b
Step-by-step explanation:
hdhbdbehebebehrbrb
how do you do this
Answer:
The best choice is to use a calculator (the button is [tex]\sqrt[/tex]), but if that is not an option here are a few tips.
If a perfect square ends with a 1, then the last digit of its square root has to be either 1 or 9.
If a perfect square ends with a 4, then the last digit of its square root has to be either 2 or 8.
If a perfect square ends with a 5, then the last digit of its square root is definitely 5.
If a perfect square ends with a 6, then the last digit of its square root has to be either 4 or 6.
If a perfect square ends with a 9, then the last digit of its square root has to be either 3 or 7.
I took a look and all of them seem to be perfect squares so hopefully this helps!
Can someone answer this
Question 23
Answer:
65
Step-by-step explanation:
60 is 5 timesas great as k
Answer:
12
Step-by-step explanation:
60=12*5
x is y times as great as k means that x=k*y
Two movie tickets and 3 snacks are $24. Three movies tickets and 4 snacks are $35. How much is a movie ticket and how much is a snack.
Answer:
Movie tickets are $9. Snacks are $2
Step-by-step explanation:
2m+3s=24
18+6=24
What times 2 =121 example 2x2=4
Answer:
60.5
Step-by-step explanation:
All you need to do is divide 121 and 2. When you do so you world get 60.5.
To check, 60.5 times 2 is 121.
Hope this helped!
Answer:
Do you mean 11*11=121
Step-by-step explanation:
11 multiplied by 11
One lap around the lake is 7/10 mile.
Dasha runs 9 laps around the lake.
Answer:
63/10 = 6 3/10 miles
Step-by-step explanation
Multiply 7 times 9 = 63Simplify 63/10 and get 6 3/10So, Dasha runs 6 3/10 milesThere are 63/10 or 6 3/10 or 6.3 miles Dasha runs 9 laps around the lake if one lap around the lake is 7/10 miles.
What is a fraction?Fraction number consists of two parts, one is the top of the fraction number which is called the numerator and the second is the bottom of the fraction number which is called the denominator.
It is given that:
One lap around the lake is 7/10 miles.
Let x be the number of miles in 9 laps
x = 9(7/10)
x = 63/10 miles
Or
x = 6.3 miles
Thus, there are 63/10 or 6 3/10 or 6.3 miles Dasha runs 9 laps around the lake if one lap around the lake is 7/10 miles.
Learn more about the fraction here:
brainly.com/question/1301963
#SPJ2
which expression is equivalent to -3.4+(-y)- -5/8?
Answer:
- 2.775 - y
Step-by-step explanation:
-3.4+(-y)- -5/8
Note: (1) + × - = -
2) - × - = +
3) - × + = -
Therefore
-3.4+(-y)- -5/8
= -3.4 - y + 5/8
-3.4 - y + 0.625
Collect like terms
0.625 - 3.4 - y
= - 2.775 - y
I hope this was helpful, please mark as brainliest
In Mr. Williams' 2nd hour class, 40% of the students scored a 85% or higher on a quiz. If 20 students scored a 85% or higher on the quiz, how many students are in Mr. Williams' 2nd hour class?
Answer:
50 students
Step-by-step explanation:
40% of total students = 20
"of" means multiply
[tex]40\% \times \ total = 20\\\frac{40}{100} \times \ total = 20\\\\0.40 \times \ total = 20\\total = \frac{20}{0.4}\\\\total = 50[/tex]
you have 480 roses and 24 of them dies, how many per cent died?
Answer:
5%
Step-by-step explanation:
5% of the roses died.
480 roses = Total number of roses
24 roses = number of roses that died
24 roses that died as a percent of 480 the total is:
24/480*100= 5%
To find the percent of roses that died, we take the number of roses that died and divide it by the total amount of roses there are and multiply it by 100 to find the percent.
Final answer:
To find out the percentage of roses that died, you can use a proportion where 24 out of 480 roses is equal to x out of 100, and solve for x, resulting in 5% of the roses that died.
Explanation:
To calculate the percentage of roses that died, you can set up an equivalent fraction that compares the number of dead roses to the total number of roses, with 100 as the denominator. In this case, 24 roses died out of 480. The fraction for this scenario is 24/480, and you want to find out how this fraction translates to a percentage.
To do this, you would set up a proportion like this:
24/480 = x/100
Cross-multiply to solve for x, which represents the percentage of dead roses:
24*100 = 480*x
2400 = 480*x
x = 2400/480
x = 5
So, 5% of the roses died.
Is parallelogram HIJK a rhombus?
Answer:
yes it is
Step-by-step explanation:
Is 2/5 grater than or less than or equal to 1/3
Answer: 2/5>1/3
Step-by-step explanation: To make this easier, convert both to fifteenths.
To do this for 2/5, divide 15 by 5 to get 3. Now multiply both 2 and 5 by 3. This should get you 6/15.
To convert 1/3, divide 15 by 3 to get 5. Now multiply both 1 and 3 by 5. This should get you 5/15.
6/15>5/15 so 2/5>1/3.
What is the closed linear form for this sequence given a1 = -15 and an + 1 = an - 8?
Answer:
[tex]a_n=-8n-7[/tex] is the closed linear form of the given sequence.Step-by-step explanation:
Given that [tex]a_1=-15[/tex] and [tex]a_{n+1}=a_n-8[/tex]
To find the closed linear form for this given sequence :So each of the successive term of the given sequence is decreases by 8
Therefore the common difference is -8
The given sequence is a arithmetic sequence.
The general form is [tex]a_n=a_1+(n-1)d[/tex]
Substitute [tex]a_1=-15[/tex] and d=-8 in [tex]a_n=a_1+(n-1)d[/tex] we get
[tex]a_n=-15+(n-1)(-8)[/tex]
[tex]=-15-8n+8[/tex]
[tex]a_n=-8n-7[/tex]
Therefore [tex]a_n=-8n-7[/tex] is the closed linear form of the given sequence.Answer:
c) an=-7+8n
Step-by-step explanation:
i got it wrong and it told me the right answer so ill make sure you guys don't get it wrong :3
What is the Area of a triangle with the base of 4 cm and the height of 8 cm?
Step-by-step explanation:
[tex]area \: of \: triangle \\= \frac{1}{2} \times base \times height \\ = \frac{1}{2} \times 4 \times 8 \\ = 2 \times 8 \\ = 16 \: {cm}^{2} \\ [/tex]
Which describes how to calculate the range of this data set?
4, 5, 6, 8, 11, 12
Subtract 11 - 5
Subtract 12 - 4
Add 11 + 5
Add 12 + 4
Answer:
12 - 4
Step-by-step explanation:
To get the range, subtract the lowest number from the highest
The highest number is 12
The lowest number is 4
Range = 12 - 4
= 8
Answer:
12 - 4
Step-by-step explanation:
To get the range, subtract the lowest number from the highest
The highest number is 12
The lowest number is 4
Range = 12 - 4
= 8
Step-by-step explanation:
Solve xin for the figure
X=16 hope that helps!
1 googol is 1 × 10100 Danesh says, " When I multiply 1.496 × 1011 by 6.68 × 109 I get nearly 1 googol because 1.496 × 1011 × 6.68 × 109 = 9.99 × 1099 " (b) Is Danesh correct? Give a reason for your answer
Danesh is incorrect as the multiplication of 1.496 × 1011 and 6.68 × 109 results in a value with 1020, not 1099. Moreover, 1 googol equals 1 × 10100, which is much larger.
Explanation:No, Danesh is incorrect. According to the laws of exponents, when you multiply two powers with the same base, you add the exponents. Therefore, the multiplication of 1.496 × 1011 and 6.68 × 109 will result in a value that is multiplied by 1020 and not 1099. Also, 1 googol is significantly larger than the result of this multiplication because it is equal to 1 × 10100. Thus, the statement made by Danesh is inaccurate.
Learn more about Laws of Exponents here:https://brainly.com/question/28966438
#SPJ2
2 Points
Congruent angles must satisfy which of the following conditions?
A. The sum of their measures is 90°
B. They have the same angle measure.
C. They share a vertex and a side.
Answer:
B
Step-by-step explanation:
Congruent angles are angles that have the same measure. This is the primary condition that they satisfy. The sum of their measures being 90° or sharing a vertex and a side don’t necessarily define congruent angles.
Explanation:In the field of Mathematics, particularly in geometry, congruent angles are those which satisfy the condition of having the same angle measure. This implies that their measures, when compared, are equal. The other options you mentioned, like the sum of their measures being 90° or sharing a vertex and a side, don’t necessarily apply to all congruent angles. For instance, for two angles to sum to 90°, they would be complementary, not necessarily congruent.
Learn more about Congruent Angles here:https://brainly.com/question/33500921
#SPJ2
How long does it take to travel 30km at 45km/h?
It will take 0.67 hours
Step-by-step explanation:
Step 1: Given distance = 30 km and speed = 45 km/hr. Find the time using the formula for speed.Time = Distance/Speed
= 30/45 = 0.67 hours