8x – 3y = -21
y = 5x + 7

Answers

Answer 1
8x-3(5x+7)=-21
8x-15x-21=-21
-7x=0
x=0
y=5(0)+7
y=0+7
y=7
(0,7)

Related Questions

helppppp!!!!!!!!!!!plz

Answers

Answer:

the answer is point A it's the first one point A

Answer: One of your answers are right. (B and A)

Step-by-step explanation: The opposite of positive 2 will be negative 2, and -2 is at Point A.

r=26 in. find the diameter.

Answers

Answer:

see

Step-by-step explanation:

diameter=2×pi×r

diameter. 2.22/7.r

PLEASE ANSWER ASASP FOR BRAINLEST!!!!!!!!!!!!!!

Answers

Answer:

32 units²

Step-by-step explanation:

this shape is a trapezoid with a height of 4 and bases that are 4 and 12 units in length

formula is: 1/2(height) x (sum of bases)

A = 1/2(4)(4 + 12)

A = 2(16)

A = 32

It’s 32 because 4 x4 is 16, we just answer the square part. Now we are moving on to the triangles on the side. 4 x4 is 16 /2 is 8 then time eight by two bc their are two triangles. So 16 plus 16 is 32

What is 49% in a decimal

Answers

Answer:

0.49

Step-by-step explanation:

Answer:

Step-by-step explanation:

49% = 0.49 in decimal form. Percent means 'per 100'. So, 49% means 49 per 100 or simply 49/100. If you divide 49 by 100, you'll get 0.49 (a decimal number).

An NBA trainer wants to know if his stretching routine is helping the players on his team jump higher. He records the average height jumped for 8 players before completing his stretching routine, and then again after they have stretched. What is the parameter? Group of answer choices dbar = the true sample mean difference in jump height mu_d = the true sample mean difference in jump height dbar = the true population mean difference in jump height mu_d = the true population mean difference in jump height

Answers

Answer:

a. mu_d = the true population mean difference in jump height

Step-by-step explanation:

In statistical parlance, observations used for a study could either be randomly chosen points or members of a large group or population, this small chosen observation obtained from a larger group is called the sample, the statistical measures or characteristic of such group is called statistic; while statistical characteristic, computations or measurement of the entire group of observations is called the parameter.

Mean of sample are usually represented with a bar sign on top such as (xbar) ; while mean of a population is represented as μ.

3.Reflect the point (6,-5) over the x-axis.
A.(-6,-5)
B.(6,-5)
C.(6,5)
D.(5,-6)

Answers

Answer:

the answer is C

Step-by-step explanation:

hoped I helped:)

x/5 + 20 = 20.1

5x + 20 = 20.1

Answers

Answer:

No solution

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

a) The value of x in equation (a) is x = 0.5.

b) The value of x in equation (b) is x = 0.02.

Let's solve the equations for the value of x:

a. X/5 + 20 = 20.1

Step 1: Subtract 20 from both sides to isolate the term with x:

X/5 = 20.1 - 20

Step 2: Simplify the right side:

X/5 = 0.1

Step 3: To solve for x, multiply both sides by 5:

X = 0.1 * 5

X = 0.5

So, the value of x in equation (a) is x = 0.5.

b. 5x + 20 = 20.1

Step 1: Subtract 20 from both sides to isolate the term with x:

5x = 20.1 - 20

Step 2: Simplify the right side:

5x = 0.1

Step 3: To solve for x, divide both sides by 5:

x = 0.1 / 5

x = 0.02

So, the value of x in equation (b) is x = 0.02.

To know more about value:

https://brainly.com/question/15883630

#SPJ2

Complete question is:

Solve the given equations for the value of x:

a. X/5 + 20 = 20.1

b. 5x + 20 = 20.1

Ken earned $128 from his part-time job this summer. He spent 25% of his money on games. He is going to donate 1/6 of the remaining money to charity. How much will the charity receive?

A) $15
B) $16
C) $32
D) $80

Please explain how to do it also

Answers

Answer:

B) $16

Step-by-step explanation:

Alright so first you want to take the total amount of money made :

$128

Next you want to find 25% of this number (or 1/4) and subtract it from the total.

So :

128 / 4 = 32

So now we take 128 and subtract 32. (32 = 1/4 or 25% of 128)

128 - 32 = 96

Ken now has $96 left over after spending money on games.

So now that we have this number we need to find 1/6 of it because he took 1/6 of the money after he bought games and put it towards charity.

So :

96 / 6 = 16

16 is equal to 1/6 of his leftover money after games and is the amount the charity received.

B) $16

I hope this helps! :)

If you are confused or have any questions please comment or dm and I would be happy to help.

Also change the pfp FeelsGoodMan

Answer:

B) $16

Step-by-step explanation:

1. First let's find how much he spent on games. Multiply 0.25 to 188. 0.25 x 128 = 32.

2. Now subtract that amount from the original $128.  128 - 32. = 96.

3. Then, multiply 1/6 from 96. 1/6 x 96 = 16. This $16 is the amount the charity will receive.

Questions:
1. If the run of a ramp increases and the rise stays the same, how does the slope of the ramp change?

Answers

There is an exponential growth therefore the slope rises.

9514 1404 393

Answer:

  slope decreases

Step-by-step explanation:

The slope of a ramp is directly proportional to the rise and inversely proportional to the run. When the run increases, the slope decreases.

PLEASE PLEASE HELP!!! Match each pair of matrices with its product matrix.

Answers

Answer:

Step-by-step explanation:

Did the calculations myself, probably too late for these to be of any use but I'll leaave them here anyways for anyone else that needs it in the future. Love yall!

PLEASE HELP! DUE IN 5 MINS!

Answers

Answer:

1.33

15.96

1.25

15.00

this week

96 cents

Please help for instant brainliest.

Answers

Answer:

20,20 :)

Step-by-step explanation:

Answer:

20, 20 is the answer so D

Step-by-step explanation:

Its too Ez

Maribel wants to skate 12 miles on Monday. If she skates io mile Monday morning and į of that distance Monday afternoon, will she reach her goal? Explain.​

Answers

Answer & Step-by-step explanation:

Yes, Maribel will reach her goal. If you convert each fraction with a denominator of 6 then add it up, it will be 1 7/6 which is equal to 2 1/6.

I hope this helps ;)

how do I find 16% of 575

Answers

Answer:

92

Step-by-step explanation:

The easiest way for me to find any percentage of a number is to find what 1% is and then multiply by the % amount. So to answer this question I would do 575/100 which is 5.75 and this is 1% then multiply 5.75 by 16 to get 92 so a 16% of 575 is 92. (Double check to make sure I'm correct)

The ratio of length to width on a rectangle is
1/6 : 2/3.
The perimeter of the figure is 90. Find the
length of the rectangle.

Answers

Answer:

half flyfkycoyfkgflycj hrxhrhddzg

If the triangle has a base length of 8in and a total area of 32 in what is the height

Answers

Your answer would be 8.
When finding the area of a triangle, the formula is half the base times the height. 8x8=64, 64/2 is 32. PLEASE MARK BRAINLIEST IF I HELPED
The height will be 8.

The formula for area of a triangle is 1/2(b x h).

If you do 8 x 8, you get 64 and half of 64 is 32.

Hope this helps! :(

Bulky Store also sells ground beef.



10 patties for $4.99



What is the cost of 30 hamburgers rounded to the nearest cent?

Answers

$15 dollars for 30 hamburgers. Hope this helps!

Answer:

60$

Step-by-step explanation: 10/5=2

2*30= 60

*rounded*

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Answers

Answer:

Step-by-step explanation:

Answer:

the answer is 19/11!!!!!

Let the random variable X be equally likely to assume any of the values 1/14, 1/7, or 3/14. Determine the mean and variance of X. The mean is Enter your answer; The mean is 1/7 [Give exact answer in form of fraction.] The variance is Enter your answer; The variance is 0.1190 [Round your answer to four decimal places (e.g. 98.7654).]

Answers

Answer:

1/7 ;

0.0034

Step-by-step explanation:

Given that:

X = 1/14, 1/7, 3/14

n = number of observations = 3

Since, probability of X is equally likely ;

P(X) = Σp(x) = 1 ; p(x) = 1/n = 1/3

The mean, m ;

Σx*p(x) = (1/3 * 1/14) + (1/3 * 1/7) + (1/3 * 3/14)

= 1/42 + 1/21 + 3/42

= (1 + 2 + 3) / 42

= 6 / 42

= 1/7

The variance :

Σx²*p(x) - m²

((1/3) * (1/14)^2) + ((1/3) * (1/7)^2) + ((1/3) * (3/14)^2) - (1/7)^2

= 0.0238095 - 0.0204081

= 0.0034014

= 0.0034

Tell whether the triangles are similar. Explain your answer.
Please help!!

Answers

triangles BAC and EDF are similar as the have the scale factor 2 (meaning triangle BAC's sides are double EDF. However triangle JKL and RPQ are not similar as the ratios of all the lengths of the corresponding are not equal (I hope that makes sense x)

integers are positive and negative whole numbers, they do not include positive and negative fractions or decimals?

true or false? help pleasee

Answers

The correct answer is True. Hope this helps
Answer: True
Explanation: I learnt it in 6th grade math

In an experiment, the number of insects on a randomly selected plant is recorded.a Specify the sample space for this experiment.b Give the set A representing the event of at most three insects being on the plant.c Explain why each of the possible outcomes in the sample space is not equally likely.

Answers

Answer:

{0, 1, 2, 3, 4, 5,....} ;

{0, 1, 2, 3} ;

Step-by-step explanation:

Number of insect on a randomly selected plant

The number of insect in such an experiment will be an integer value ;

Hence, sample space will be ;

{0, 1, 2, 3, 4, 5,....}

B.) Event of at most three insects:

Number of insects = 0 ;

Number of insect = 1 ;

Number of insect = 2 ;

Number of insect = 3 ;

n ≤ 3 {x : x ≤ 3}

{0, 1, 2, 3}

3.)

Each possible outcome in the sample space cannot be equally likely due to the fact that the number of insects on the selected plants will vary. With some plants having none to large number of insects while some have small amount of insects.

Help me please. This is due tonight.

Answers

Answer:

84=40x+.22

-.22    -.22

83.78=40x

83.78/40=2.0945

you can drive at most 2 miles per day

The sales tax in Whittle City is 7%, how much tax is charged on a purchase of $53?

Answers

Answer:

3.71$

Step-by-step explanation:

Answer:

$3.71 hope this helps

Step-by-step explanation:

a basket had 120 star apples and mangoes.if there are 90 mangoes what is the ratio of mangoes to star apples.?

Answers

Answer:

3 : 1

Step-by-step explanation:

120-90=30

90 mangoes

30 apples

90 : 30 divide both by 10

9 : 3 divide both by 3

3 : 1

a bag contains 3 red balls 3 green ball and 1 blue ball.a ball is chosen at random and then placed back in the bag. a second ball is chosen at random. Find the probability that :a) the first ball is red?​

Answers

Answer:

its a three out of seven then it stays the same

Step-by-step explanation:

The price of technology stock has risen $9.87 today yesterday's price is $9.74 find the percentage increase round your answer to the nearest 10th of a percent percentage.

Answers

Step-by-step explanation:

To find the percent increase, divide the increase by the original price.

P1 = price yesterday

P2 = price today

To find percent increase

[tex] \frac{(p2 - p1)}{p1} [/tex]

Or to answer the question,

P1 = 9.74

P2 = 9.87

[tex] \frac{(9.87 - 9.74)}{9.74} = 0.013347[/tex]

Or 1.33%

help my answer question 2 quick its an emergency ​

Answers

Answer:

D

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Find the value of the variables in the following diagrams.

Answers

14 is the value of the variable

A group of 28 students wants to go on a bus trip. The cost of the bus is $220. $94 dollars will be paid by one parent and the rest of the cost will be paid for by the students. Select the correct equation to represent this scenario from the options below. Group of answer choices LaTeX: 28x+94=22028 x + 94 = 220

LaTeX: 28x-94=22028 x − 94 = 220

LaTeX: 94x+28=22094 x + 28 = 220

LaTeX: 94x=22094 x = 220

Answers

Answer:

c

Step-by-step explanation:

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Enry can make 8 cupcakes (the y value) with one cup of flour (the x value). How many cupcakes can he make with 7 cups of flour? What is the solution to this system of equations? Remember to write your solution as a a point (x, y). Drag each equation to show if it could be a correct first step to solving the equation 3(6+x)=24. ANSWER FAST PLEASE Que diferencia hay entre un informe de investigacion cientifica y un experimento cientifico? please help me out i will give you brainlyist Right answer gets brainlist Answer each question in Spanish using complete sentences A dolphin is at -25 feet. It swims up and jumps out of the water to a height of 10 feet. Write a subtraction expression for the vertical distance the dolphin travels some help pwese????? PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!! Luke has a board 56 of a yard long. He needs to cut the board into 5 equal sections. Use the expression to find the length of each section. Each section is yard long. Answer what you can please and show work. I will mark you brainliest. When the outlier(s) are removed, how does the mean change? The mean decreases by 2.1. The mean increases by 1.6. The mean increases by 2.1. There are no outliers. . Phillip spent $7.84 on apples at the grocery store. If he bought 2.3 pounds of apples on Mondaynd 1.2 pounds of apples on Tuesday, how much did pay per pound? (4 points) Plot the point, (1,1.5).Select the point tool. Then, click on the graph to plot the point. Imagine that you are a scientist who has discovered a new object. You want to find out if the object is biotic or abiotic. You observe several characteristics about the new object. Which of these characteristics would tell you that the object is abiotic, or not alive?(1 point)The object cannot create energy.The object has a crystalline structure.The object can mutate.The object responds to stimuli. Please help asap thank you!!!! GIVING BRAINLIEST - Summarize the Continental Drift theory in a short paragraph. Then, give two reasons that scientists believe in the continental drift theory.Thank You!!! Last month you spent 40$ on clothing. This month you spend 160% of what you spent last month. Set up a percent equation to model this situation. How much did you spend this month.Choose correct answer belowA. 160%=percent40B. part=160%40C. 40=160%whole Calculate the areas of these rectangles.a)8 cm3 cmb)5.2 cm7.7 cm