Mathematics High School

solve each system by graphing​

Solve Each System By Graphing

Answers

Answer 1

Answer:

x4 y9?

Step-by-step explanation:

Don't put my answer in just maike sure its correct!

Answer 2
It would look like this I think
Solve Each System By Graphing

Related Questions

For smart ppl in math.

Answers

Answer:

It's all explained below :)

Step-by-step explanation:

So first we need to go to a graphing calculator! I usually use Desmos to do my stats stuff. You'll wanna head to their linear regression calculator (I can't add a link, but just google Desmos linear regresion and it'll pop up).

Put the points into the table. Lines of best fit have the equation y1 ~ bx1+a, so put that in the box right below the table, where you see another equation already written- just edit it. We see all the other numbers listed below that, so we know that b=-0.894 and a=13.599, so the line of best fit is -0.9x + 13.6 = y when you round those numbers.

The correlation coefficient is represented by the letter r. r is shown below as well, and is -0.964. Strong correlations are represented by a value close to the number 1, so this is strong, as it's very close. It is negative because of its sign. Correlation coefficients don't go over the number 1 or below -1, so be careful. I hope this was helpful! If you need any more clarification just let me know.

Which of these relations is a function?
I’m I correct??

Answers

Answer:

the first one on the bottom

Step-by-step explanation:

There is a little trick to find out if it is a function or not. This trick is called the vertical line test. if you can scan the figure with a virtual line and it does not touch more than one side of the figure at one time then it is a function. if it touches more than one side or line of the figure it is not a function.

Please helppp wil mark brainliest

Answers

Answer:

2,3

Step-by-step explanation:

∆ABC has vertices at A(12, 8), B(4, 8), and C(4, 14). ∆XYZ has vertices at X(6, 6), Y(4, 12), and Z(10, 14). ∆MNO has vertices at M(4, 16), N(4, 8), and O(-2, 8). ∆JKL has vertices at J(14, -2), K(12, 2), and L(20, 4).

Answers

Answer:

First is ABC and MNO, second is rotation I believe.

Step-by-step explanation:

What is the solution to the equation?
8v - 4(v + 8) = 8
O v = 2
O v = 10
ng
v=4
o
v=-4

Answers

Answer:

v =10

Step-by-step explanation:

8v - 4(v + 8) = 8

Distribute

8v -4v -32 = 8

Combine like terms

4v -32 = 8

Add 32 to each side

4v -32+32 =8+32

4v = 40

Divide by 4

4v/4 = 40/4

v =10

Answer:

v = 10

Step-by-step explanation:

Expand 8v - 4(v + 8) = 8 and then combine like terms:

8v - 4v - 32 = 8, or

4v = 40

Then v = 40/4, or v = 10

Which table has a constant of proportionality between yyy and xxx of 0.30.30, point, 3?

Answers

Answer:

Answer

Step-by-step explanation:

The answer is C

You would do 1.2 ÷ 4 which is 0.3

2.4  ÷ 8 is 0.3

3.9  ÷ 18 is 0.3

A is wrong because the constant of proportionality is 0.33333

B is wrong because the constant of proportionality is 0.6

No Problem!

Holly has $225 to spend at the shopping mall. She decides to buy sweaaters and pants with her money. Sweaters cost $45 each and pants cost $25 each. The equation 45s + 25p = 225 represents this situation.

If Holly buys 3 sweaters, what is the greatest number of pants she can buy?

Answers

Answer:

3 pairs of pants

Step-by-step explanation:

Plug 3 in for s. Your equation should now be 45(3) +25p=225

Then distribute 135+25p=225

Subtract 25p=90

Divide p=3.6

Since you cannot buy half of a pair of pants you need to round down to three

I NEED HELPS ASAP PLS

Answers

Answer:

9

Step-by-step explanation:

Pentagon JKLMN is similar to pentagon UVWXY.
What is the length of WX?
18
15
10
N
(not drawn to scale)
A 15
13
12
O 18

Answers

9514 1404 393

Answer:

  C.  12

Step-by-step explanation:

Corresponding sides are proportional. Sides with the same mark are the same length.

  WX/XY = LM/MN = LM/KJ

  WX/10 = 18/15

  WX = 180/15 . . . . multiply by 10

  WX = 12

Write the following in standard form.

Answers

Answer:

[tex]\huge\boxed{3x+y=23}[/tex]

Step-by-step explanation:

First off, let's note that when given a slope and a point, we will write our equation in the form [tex]ax+by=c[/tex], where a is the slope and c is the y-intercept.

Since we know the slope, but not the y-intercept, we can start to fill in what we already know.

[tex]3x+y=c[/tex]

Therefore to finish this equation, we must find the y-intercept.

Since we know that the point (7, 2) runs through this line, we can plug it into our formula ([tex]3x+y=c[/tex]) to find the y-intercept, b.

2 is the y, 7 is the x, -3 is the slope, so we can plug it into the equation to find b.

[tex]3(7) + 2 = c[/tex] [tex]21+2=c[/tex] [tex]23 = c[/tex]

This means that the y-intercept for our graph is 23. Now that we know this, we can plug it into our equation ([tex]3x+y=c[/tex]) as b and finish up the equation for the line.

[tex]3x+y=23[/tex]

Hope this helped!

Simon bought 3.5 pounds of Beef on sale for $1.25 per pound at HEB. If Simon gave the cashier $10.00, how much change would he receive from this purchase?

Answers

Answer:

5.625

Step-by-step explanation:

equivalent answers for 64 to the power of 2/3

Answers

Answer:

16

Step-by-step explanation:

Dealing with a fraction exponent on hand can be converted by using the fractional exponents rule where the fraction exponent is converted to something like this:

[tex]64^\frac{2}{3} = \sqrt[3]{64^{2}}\\[/tex]

As you can see, the denominator of the fractional exponent is now the index of the radical. Here is a guide to know what goes where.

[tex]64^\frac{x}{y} = \sqrt[y]{64^{x}}[/tex]

Both the original problem (64^2/3) and the converted formula can be put into a calculator.

Simplify (if you want to)

[tex]\sqrt[3]{64^{2}}\\\sqrt[3]{4096}\\16[/tex]

64 to the power of 2/3 is 16.

Solve for ... 2x + 3 ​

Answers

Answer:

15

Step-by-step explanation:

Answer:

15

Step-by-step explanation:

The regression equation for change in temperature, y, to amount of rain, r, is given by ŷ = 0.2 − 1.4r. On Monday, the observed amount of rain was 0.4 inches and the temperature change was 2.3 degrees. Find and interpret the residual.

2.66. The regression line overpredicts the temperature change.
2.66. The regression line underpredicts the temperature change.
1.94. The regression line underpredicts the temperature change.
−1.94. The regression line overpredicts the temperature change.
−3.02. The regression line underpredicts the temperature change.

Answers

Given:

The regression equation for change in temperature, y, to amount of rain, r, is given by

[tex]\hat{y}=0.2-1.4r[/tex]

The observed amount of rain was 0.4 inches and the temperature change was 2.3 degrees.

To find:

The residual and interpret it.

Solution:

According to the question, the observed amount of rain was 0.4 inches and the temperature change was 2.3 degrees.

So, the actual value is 2.3 degrees.

Put r=0.4 in the given equation, to find the predicted value.

[tex]\hat{y}=0.2-1.4(0.4)[/tex]

[tex]\hat{y}=0.2-0.56[/tex]

[tex]\hat{y}=-0.36[/tex]

We know that,

Residual = Actual value - Predicted value

[tex]Residual=2.3-(-0.36)[/tex]

[tex]Residual=2.3+0.36[/tex]

[tex]Residual=2.66[/tex]

Residual is positive because predicated value is less than the actual value.

So, the regression line underpredicts the temperature change.

Therefore, the correct option is B.

Does anyone know thissss

Answers

We can’t even see it sorry
God bless you

WHY DO I FEEL EXTRA NICE- FFTVJHFTYSDEV

Answers

Answer:

cause u are nice

Step-by-step explanation:

WILL GIVE BRAINLIEST

Answers

Answer:

the answer is A

Step-by-step explanation:

TWENTY PIONTS!!!!! what completes the prime factorization of 315

Answers

Answer:

Positive Integer factors of 315 = 3, 9, 5, 45, 7, 315 divided by 3, 3, 5, 7, gives no remainder. Step-by-step explanation:

THIRTY POINTS Will mark branliest if right.

Which expression is equal to the expression below?
(2 x 6)^4

A. 2^4 x 6^4
B. 8^4
C. 4 x (2 x 6)
D. 2 x (6)^4

Answers

Answer:A

Step-by-step explanation:A

What's the answer
BchbhbdbhdjbcdjcnjcjndJncjjj

Answers

Answer: 1,3,6

Explanation:

Simplify the expression: 6/3(13−18)+2^4÷6

Answers

Answer:

-7.333

Step-by-step explanation:

Answer:

-7 1/3

Step-by-step explanation:

find the slope of this line

Answers

Answer:

slope is 1

Step-by-step explanation:

0--2=2

1--1=2

2/2-1

PLEASE I NEED HELP!! what are two ways that you can tell that two ratios form a proportion? i really need to pass this test to get my grades up, I'm not trying to cry my whole winter break.​

Answers

Answer:

A proportion is simply a statement that two ratios are equal. It can be written in two ways: as two equal fractions a/b = c/d; or using a colon, a:b = c:d. The following proportion is read as "twenty is to twenty-five as four is to five."

Step-by-step explanation:

Answer:

A proportion is simply a statement that two ratios are equal. It can be written in two ways: as two equal fractions a/b = c/d; or using a colon, a:b = c:d. Ratios are proportional if they represent the same relationship. One way to see if two ratios are proportional is to write them as fraction in it’s simplest form. Another way is to see if the numbers in the ratios are factors or multiples of each other. For example, 10:5 and 30:15. 10:15= 10/5 and 30:15= 30/15. Then you put it in simple form. 10/5 = 2 and

30/15 = 2. Therefore 10:5 and 30:15 are proportional.

Hope this helps :)

using the equation y=-6x+1: if you choose -2 as the input ,what will be the output

Answers

Answer: 13

Step-by-step explanation: you substitute x for -2 because the input is known as x. The output is known as y; solving the new equation y=-6(-2)+1 you will get y=12+1 then y=13

If eight trash bags last for thirty days then 28 trash bags will last for how long

Answers

Answer:

105 Days

Step-by-step explanation:

Hope I helped

Answer:

105 days

Step-by-step explanation:

I don’t know if your teacher wants you to solve it like this but I used a proportion

8/30= 28/x

write a paragraph about the activites that you mostly do in holidays​

Answers

Some things i do over the holidays,
Are spending time with my family and friends. During Christmas time i help my family cook a meal a wrap presents, Any other time i would usually just go out of state and/ or spend time with friends. Something i also enjoy doing is going shopping and finding new things.

[tex]I need help can someone help? I’m really stuck and it’s so really soon! I need to show my work[/tex]

Answers

The pictures are blurry I can’t see anything

Write an expression and solve. Cole wants to buy a shirt for $25. The sales tax
is 8%. How much will the shirt cost?
Show your work:
A. $27
B. $33
C. $45
D. $227

Answers

Answer:

A

Step-by-step explanation:

8% of 25 is 2 so 25 + 2 =27

It’s A. I’m pretty sure!

A painter painted about a fifth of a room in a fifth of a day. Coley estimated the painter would paint 6 rooms in 6 days. Is Coley's estimate reasonable? Complete the explanation.

EXPLANATION: Coley's estimate (is not/is) reasonable because the painter's unit rate is (blank) room per day, so in 6 days the painter would paint about (blank) rooms.

Answers

Answer:

yes he is correct

Step-by-step explanation:

if he is painting 1/5 of a room in 1/5 of a day he is painting 1 room in 1 day therefore he can paint 6 rooms in 6 days

$85 Restaurant Bill; 15% Tip

Answers

Answer:

97.75

Step-by-step explanation:

15% of 85 is  12.75

12.75 + 85 = 97.75

Hope this helps have a nice day

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