plzzzzzz help Solve the system by Substitution.

x−4y=−7

−x+2y=3

A(1, 3)

B(1, 2)

C(-1, -3)

D(1, -3)

Answers

Answer 1

Answer:

B

Both systems can be sloved by susbituding (1,2)

Step-by-step explanation:

(1)- x−4y=−7

Substitute in the x and y values: 1 - 4 (2) = -7

Multiply the numbers : 1 - 8 = -7

Calculate the difference: -7 = -7

(2) - −x+2y=3

Substitute in the x and y values: -1 + 2 (2) = 3

Multiply the numbers : -1 + 4 = 3

Calculate the sum: 3 = 3


Related Questions

Food bill before tax $45 sales tax 6.8% tip 24%

Answers

Answer:

The total bill is $58.86

Step-by-step explanation:

Percentages

Before tax, the food bill is $45. Sales tax is 6.8% and the tip is 24%.

Tax is 6.8*$45/100 = $3.06

Tip is 24*$45/100 = $10.80

Total additional charges are:

$3.06+ $10.80= $13.86

Thus, the total bill for the food is:

$45 + $13.86 = $58.86

The total bill is $58.86

True or False
If an acute angle is 80o then we add the obtuse angle of 110o to equal 180o?

Answers

Answer:

true

Step-by-step explanation:

What is the value of x in the equation 5 x + 3 = 4 x? –3 Negative one-third One-third 3

Answers

Answer:

?

Step-by-step explanation:

Answer:

x=-3

Step-by-step explanation:

5 x + 3 = 4 x

5x+3-3=4x-3

5x=4x-3

subtract four from both sides=x=-3

x=-3 is your final answer!

What quadrant does -495 lie in?

Answers

It would lie between 180 and 220

One number is nine more than another number.if the sum of the number is 65 ,find both numbers

Answers

Answer:

The first number is 28 the number nine more is 37

Hope this helped!

Daniel is looking at two different credit card offers. Credit Card A will give him an APR of 22.45%. Credit Card B will offer will be 1.25% each month. Which the better deal?

Answers

Answer:

Credit card B is a better deal

Step-by-step explanation:

in order to compare both credit cards, we must either convert the APR into a monthly rate or the monthly rate to APR.

convert credit card A's APR to monthly rate:

= 22.45% / 12 ≈ 1.87%, which is higher than 1.25%, so credit card B is better

OR

convert credit card B's monthly rate to APR:

= 1.25% x 12 = 15%, which is lower than 22.45%, so credit card B is better

True or false, there is a decimal point on every whole number. We just don’t usually write it.

Help LOL I have a quiz I would appreciate it

Answers

Answer:

True

Step-by-step explanation:

for example: 5 could also be written as 5.00

Answer:

I think that’s false it should be

Step-by-step explanation:

If not don’t report me plz

Solve the inequality. 4x – 7 < 5

Answers

Answer:

x < 3

Step-by-step explanation:

4x - 7 <5

4x < 12

x < 3

Answer:

x < 3

Step-by-step explanation:

4x < 12

x < 3

I hope you get this right

FASTEST RIGHT ANSWER BRAINLIEST!!!

Answers

Answer:c

Step-by-step explanation:

Brainlist

Answer:

quadrant 4

Step-by-step explanation:

6, -8 is in quadrant 4

Can u guys help me please

Answers

its y=3/4x+3

you can solve it

-3x+4y=12

add 3x both sides

4y=3x+12

divide 4 by both sides

y=3/4x+4

Answer:

y=3/4x+3

Step-by-step explanation:

Help is needed plssss

Answers

X= -4, -6. i’m not really sure what the question is asking
x=-4-6 thats the answers

there is a daily fee for renting a moving truck, plus a charge $0.50 per mile driven. it costs $64 to rent the truck on a day when it is driven 48 miles. Which linear equation can be used to model this situation?​

Answers

Answer:

Let x be the daily fee

0.5(48) +x = 64  is the equation,

Multiply:

24 + x = 64

Subtract:

x=40

The daily fee is $40

does anyone know how to do this​

Answers

The answer is 19 light blue, please Give like and brainliest

An exterior angle of a triangle has a measure of 80°, and one of the remote interior angles has a measure of 20°. Write and solve an
equation to find the measure of the other remote interior angle.
Enter the correct answers in the boxes.
Equation:
X=

Answers

Your answer would be 0.6, 3/5, and 6% are the 3 same portion. But, when they're all changed to a decimal they would equal to 0.6.

Triangle is a two-dimensional figure which has three sides and the sum of the three angles is equal to 180 degrees.

The exterior angle is equal to the sum of the interior angles in a given triangle.

The measure of the other remote interior angle is 60°.

What is a triangle?

It is a two-dimensional figure which has three sides and the sum of the three angles is equal to 180 degrees.

We have,

Let the measure of the other interior angle = M

The exterior angle is equal to the sum of the interior angles in a given triangle.

An exterior angle of a triangle has a measure of 80°, and one of the remote interior angles has a measure of 20°.

This means,

M + 20 = 80

Solve for M.

M + 20 = 80

Subtract 20 on both sides.

M = 80 - 20

M = 60

Thus,

The measure of the other remote interior angle is 60°.

Learn more about triangles here:

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WILL GIVE BRAINLIEST (two questions but points)

Write the expression as a cube of a monomial: 0.008y^21
Write the expression as a monomial in standard form: (−3xy^2)^3 · (− 2/3x^2y^3)^4

Answers

Answer:

The answer to the first question is (0.2y^7)^3

Step-by-step explanation:

The expression (0.2 × y⁷)³ is a cube of a monomial in standard form and the expression (16/3)x¹¹y¹⁸ is a monomial in standard form.

What is the algebraic expression?

Algebraic expressions are mathematical statements with a minimum of two terms containing variables or numbers.

The expression below which is given in the question

0.008y²¹

We have to write the given expression as a cube of a monomial in standard form

0.008y²¹

0.2 × 0.2 × 0.2 × y⁷× y⁷× y⁷

(0.2 × y⁷)³

The above expression is a cube of a monomial in standard form

(−3xy²)³· (− 2/3x²y³)⁴

We have to write the given expression as a monomial in standard form

(−3xy²)³· (− 2/3x²y³)⁴

(−3x)³(y²)³· (− 2/3x²)⁴(y³)⁴

x³y⁶· 16/3x⁸y¹²

(16/3)x³⁺⁸y⁶⁺¹²

(16/3)x¹¹y¹⁸

The above expression is a monomial in standard form.

Learn more about the algebraic expression here :

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help me plz idk this at all

Answers

Step-by-step explanation:

sin theta = opp / hyp

sin theta × hyp = opp

sin60 × 30 = opp

.866 × 30 = opp

25.98° = opp

*Theta is the 0 with a line through it

What is (f.g)(x)?
f(x) = -2x + 4
g(x) = -x

Answers

Answer:

fog=f[g(x)]

=f[-x]

=-2x+4

What are the x- and y-intercepts of the graph of y = x2 + x - 6? (1 point)
O x-intercepts: (3, 0) and (2,0)
y-intercept: (0,6)
O x-intercepts: (3.0) and (-2,0)
y-intercept: (
0-6)
x-intercepts: (-3,0) and (2.0)
y-intercept: (0-6)
x-intercepts: (-3,0) and (2.0)
y-intercept: (0.6)

Answers

Answer:

okay i will answer but i dont see the question

Step-by-step explanation:

Student council is voting which elective classes should be offered at the middle school. the choices are Band, Art, and Spanish. Art received twice as many votes as Band. Spanish received 20 more votes than Art. 190 students voted total.

Answers

Question what are we supposed to do like add subtract??

Answer:

34 people voted for band 68 people voted for art and 88 people voted for Spanish this help

Step-by-step explanation:

what are the Coefficients in 4e + 7e + 5

Answers

Answer:

4 and 7

Step-by-step explanation:

Coefficients are just bassically the numbers behind the variable, hope this helps!

These questions down below are a bit confusing for me, if someone would help me with them I would be absolutely grateful thank you so much

Answers

1.) $44.37
2.) honestly not sure
3.) $540
4.) 60 inches, yes because 40wks x 1.5 inches = the amount it’ll grow after 40wks which is 60in.

Is this correct? If not, please tell me why!!

Answers

Answer:

your correct good job

Yes it is right :) your all good

HELP PLS BRAINLIEST FOR CORRECT ANSWER

Answers

Answer:

83

Step-by-step explanation:

Answer:

x = 59

y = 83

Step-by-step explanation:

First, you need to solve for y in order to solve for x. Using the Triangle Sum Theorem, you will find that y is 83 degrees.

Now, using the Vertical Angles Theorem, you can figure out the third angle of the triangle in which x is, 83.

Using the Triangle Sum Theorem again, you will find that x is 59.

Why would you need inequalities?
plz, help me write a paragraph answering this question ^^^
I really really need help
I will mark brainiest or whatever just plz plz plz help me
has to be at least 3 sentances

Answers

Answer:

An inequality is a mathematical expression that contains inequality signs. For example, y≤ 12x is an inequality. Inequalities are used to tell us that an expression is either larger or smaller than another expression. Equations and inequalities can contain both variables and constants.

Step-by-step explanation:

Which statements are true for the functions g(x) = x2 and h(x) = –x2 ?
Check all that apply.
For any value of x, g(x) will always be greater than h(x).
For any value of x, h(x) will always be greater than g(x).
g(x) > h(x) for x = -1.
g(x) h(x).
For negative values of x, g(x) > h(x).
WILL MARK BRAINLEST

Answers

Answer:

g(x) > h(x) for x = -1.

For positive values of x, g(x) > h(x).

For negative values of x, g(x) > h(x).

Part A
Sophia bought 9 red peppers for $5.40.

PLEASE HELP

Find the unit rate. Then use the unit rate to write an equation relating the cost in dollars c to the number of red peppers p.

Answers

Answer:

$0.60/each

Step-by-step explanation:

$5.40/9=0.60  Total price *($5.60) divided by 9 (PEPPERS) = $0.60

The unit rate of red peppers is $ 0.6The equation to represent cost in dollars c to the number of red peppers p,

          c= 0.6p

What is unitary method?

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

Given:

Cost of 9 red peppers = $5.40

Cost of 1 red pepper = 5.40 /9

                                = 0.6

Now, the equation to represent cost in dollars c to the number of red peppers p,

c= 0.6p

Learn more about unitary method here:

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Complete the equation describing how x and y are related.

Answers

X is horizontal while y is vertical

In the souvenir shop, Gary finds a shirt and a key chain he would like to buy. The shirt costs $13.75 and the key chain costs $2.33. What will be the total of Gary's souvenirs?

Answers

Answer:

$16.08

Step-by-step explanation:

13.75+2.33=16.08

roduct of 0.42 * 0.2

Answers

Answer:

0.084

Step-by-step explanation:

0.42 * 0.2 = 0.084

How do you change 2.3 - 3.94 into an addition problem?

Answers

Answer:

2.3+ (-3.94)

Step-by-step explanation:

Answer:

Solve it then add the answer and one of the parts of the original.

Step-by-step explanation:

Ex.

Original: 2.3 - 3.94

2.3 - 3.94 = -1.64

New addition: -1.64 + 3.94 = 2.3

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