Mathematics High School

-2x + 2y = -4
y = -3x + 6
use substitution method for this problem no other one

86 POINTS TO WHOEVER ANSWERS PLS IM IN DESPERATE HELP

Answers

Answer 1

Answer: x=2

Step-by-step explanation: refer to image

-2x + 2y = -4y = -3x + 6 Use Substitution Method For This Problem No Other One 86 POINTS TO WHOEVER ANSWERS

Related Questions

Classify the expression by degree. -6x5 + 7x4 - 5x2

2
3
4
5

WILL MARK BRAINLEST

Answers

Answer:

-6x5 + 7x4 - 5x2

Step-by-step explanation:

Answer:

6x5=30+7×4=38 combined it equals 58 5x2=10 58-10=48

PLEASSEEEE HELPPP ME HURRRYY

Answers

Answer:

8   =     D

9 = D

10 = D

Step-by-step explanation:

For 8, a straight line is 180 degrees, and if PQS is already x+55, then RQS is also x, so it would be 2x +55 = 180

For 9, surface area is just area of the sides of a shape, so (3*15)*2 + (6*3)*2 + (5*6)*2 which equals 30 +36 + 60, which is 126.

For 10, the volume is the width*length*height, so 4*4*11 = 16*11 = 176, and because there are 6 rectangular prisms, 176*6 which is equal to 1056.

SOMEONE PLS HELP! THIS IS OVER DUE, HRLP ASAP!! I’LL GIVE 100 POINTS IF THIS IS ALL CORRECT! Work needs to be shown for all problems. ( don’t do the ones that are crossed off )

Answers

Answer:

Step-by-step explanation:

6. Soil volume = area * height = 1/2*4*4*2.5 = 20 cubic ft

7. Concrete volume = length * width * height = 1.8*1.8*3 = 9.72 cubic ft

Block weight = 95*9.72 = 923.4 lb

8. It is unclear but let's assume the ramp consists of 5 pieces.

The total area = 4*6+3.5*(4+6+7.2) = 84.2 sq ft

So it will require a minimum of 85.2/(4*2) = 10.65 or 11 sheets of plywood

Answer:

Step-by-step explanation:

the skateboard ramp only needs 3 pieces: 2x triangle of 4' by 6' and 1x rectangle of 3.5' by 7.2'.

the 2x triangle require 4x6/4x2 = 3 sheets of plywood

the rectangle require 3.5x7.2/4x2 = 3.15 ~4

so minimum is 7 sheets

Help with this please!!

Answers

Answer:

the first answer

Step-by-step explanation:

well first ofc u have to graph both equations to be able to compare them and if u don't have a graphing calculator just search up Desmos graphing calculator it will help A LOT

Solve the following quadratic equation for all values of xx in simplest form.
5(2x+1)^2+6=26 cant figure this out!!

Answers

Answer:

x=1/2 and x=-3/2

Step-by-step explanation:

5(2x+1)^2+6=26

5(2x+1)^2=20

(2x+1)^2=4

2x+1=±2

Now make two equations and solve both for x:

2x+1=2

2x=1

x1=1/2

2x+1=-2

2x=-3

x2=-3/2

The length of a rectangle is (x + 3) inches long, and the width is 3.4
inches. If the area is 15.3 square inches, which equation can be used to find
x? *

A. 3.4(x + 3) = 15.3
B 3.4x + 3 = 15.3
C. 3(x + 3.4) = 15.3
D. 3x + 3.4 = 15.3

Answers

Answer:

A)

Step-by-step explanation:

(C) Find the arithmetic mean of given data
12, 10, 15, 14, 16, 25, 18, 22​

Answers

Answer: Mean- 16.5

Step-by-step explanation:

volume of a cone is 48 pi cubic inches the cone has a height of 36 inches Mark finding the radius of the cone complete his work

Answers

Answer:

c or take the square root of both sides

a or 2 inches

Step-by-step explanation:

Which expression represents a rational number?
Please help right now!!!

Answers

Answer:

A

Step-by-step explanation:

Every integer is a rational number; a whole number. The square root of 49 equals 7, which is the only outcome giving an integer as an answer.

What is a formula for the nth term of the given sequence ? 10,-20,40...

Answers

The answer is c bro


if u need the solution i will give it to u

4b^2 +8b + 7 = 4

show your work I already have the answer!!

Answers

Answer:

(-.5,0) and (-1.5,0)

or b= -.5

and b= -1.5

Step-by-step explanation:

First we want one side of the equation to equal 0

we have

4b²+8b+3=0

using the quadratic formula we have

(-b±√(b²-4*a*c))/2a

(-8±√(8²-4*4*3))/2*4

(-8±√(16))/8

(-8±4)/8

now we evaulate when ± is addition

(-8+4)/8

-4/8

-.5

and evaulate once more when the ± is subtraction

(-8-4)/8

-12/8

-1.5

Therefore the two solutions are (-.5,0) and (-1.5,0)

Answer:

Step-by-step explanation:

step one - Move terms to the left side

(4b^2 + 8b + 7 = 4)

(4b^2 + 8b + 7 - 4 = 0)

step dose - Subtract the numbers

(4b^2 + 8b + 3 = 0)

step три - Use the sum-product pattern

(4b^2 + 6b + 2b + 3 = 0)

Questions a-f in picture fast please with explaination for work

Answers

Just download Symbolab on your android or iPhone and you’ll get the answer your looking for.

find the volume of the irregular figure

Answers

Answer:

V = 672cm^3

Step-by-step explanation:

V of irregular figure = lwh + lwh

V = 7(3)(2) + 10(7)(9)

V = 42 + 630

V = 672cm^3

HELP ASAP FIRST PERSON WITH CORRECT ANSWER GETS BRAINLIEST

Which statements about the triangles are correct? Select two that apply.

A. Triangle P is similar to triangle Q.
B. Triangle P is a reflection and a translation of triangle Q.
C. Triangle P is not similar to triangle Q.
D. Triangle P is a reflection and dilation of triangle Q.
E. Triangle P is a translation and a dilation of triangle Q.

Answers

Im pretty sure its C if not E

What is the range of the following parabola? (5 points)

Answers

Answer:

D

Step-by-step explanation:

Range is all the possible Y values in a graph

we can see that the graph will never reach a y value greater than three but will go to negative infinity

This means that answer is D (the y value will always be less than or equal to 3)

The histogram displays different numbers of days that customers rented a car. Which interval represents the most common number of days customers rented a car

Answers

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete, as the histogram is not attached.

However, the solution to your question is to select the interval with the highest frequency

Take for instance, after getting readings from the histogram, yiu have:

1 - 10: 8

11 - 20: 5

21 - 30: 11

31 - 40: 2

And so on.......

Interval 11 - 20 will represent the required interval because it has the highest frequency.

math need answer

asap please

Answers

Answer:

h=6

k=2.5

m=4.58

n=3[tex]\sqrt{10[/tex]

p=4.12

Step-by-step explanation:

Drag each rational number to the correct location on the table.
Identify the rational numbers as positive or negative.

Answers

Answer:

Step-by-step explanation:

Positive: -1/-3, -2/-2, +2/+3, -1/+3

the rest of them are negative

Answer:

Positive: 1+/+3  -2/-3  +2/+3  -1/-3 negative:-2/+3 +2/-3  -1/+3  +1/-3

Step-by-step explanation:

Jeffrey's recipe for oatmeal muffins calls for 2 1/4 cups of oatmeal and makes two dozen muffins. If he makes 1 1/2 dozen muffins for a club meeting, how much oatmeal will he use?

Answers

Answer:

1 1/8 cups of oatmeal b/c 2 1/4 ÷ 2 = 1 1/8 ( one and one eighth)

Step-by-step explanation:

If its not 1 1/8 then its 3 3/8 (i saw that answer on quizziz)

Find Angle RPQ
Number are 99 and 111

Answers

Step-by-step explanation:

99+111+arc QR=360°

arc QR=360-210 =150°

again,

RPQ=150/2{inscribed angle is half of it's arc}

75°

stay safe healthy and happy..

Darren reads 5 pages of a book each morning
and 7 pages of a book each evening.
How many pages will he read in seven days?

Answers

7+5=12
12x7=84
He will read 84 pages within seven days.

Which triangle is a reflection of the green triangle?



Δ4
Δ3
Δ1
Δ2

Answers

Answer:

Δ4

Step-by-step explanation:

Answer:

it's answer is triangle 4

What is the volume, in cubic ft, of a rectangular prism with a height of 17ft, a width of
10ft, and a length of 16ft?

Answers

Answer:

2,720 ft³

Step-by-step explanation:

17x10x16 = 2,720

does the data suggest a linear, quadratic, or exponential model?

Answers

Exponential model because it's increasing rapidly.

a whale costs $14700 and depreciates in value by 8% per year. When will the whale be worth $100

Answers

Answer:

x = 60

Step-by-step explanation:

The question is asking

$14,700 * (1 - 8%)^x = $100

$14,700 * (1 - 0.08)^x = $100

$14,700 * (0.92)^x = $100

(0.92)^x = $100/$14,700

log(0.92^x) = log($100/$14,700)

x * log(0.92) = log(0.0068027)

x = log(0.0068027)/log(0.92)

x = 59.85

Since this question is asking in terms of years, we always round up (in this case to 60), as it won't fully be worth $100 by the beginning of the 59th year.

Find the missing measurement.
Round your answer to the nearest tenth.
4.9 cm
10 cm
? cm
9.9 cm
Area = 66.6 cm2
12 cm
7.2 cm
10.6 cm
9cm

Answers

Answer:

22

Step-by-step explanation:

A cell phone company offers two different monthly text-messaging plans as shown in the table below. For what number of text messages will both plans cost the same?
A. 55 messages
B. 85 messages
C. 110 messages
D. 140 messages

Answers

Answer:

110

Step-by-step explanation:

Which of the following is true about the expression v3 • V12?

Answers

Answer:

I think is B.

Step-by-step explanation:

hope its help

Answer:

Option B

Step-by-step explanation:

can someone help me lol??

Answers

Answer:

X = 4.3, -0.3

Step-by-step explanation:

Write the answer with like a line on top of the 2 threes that you see

Mark me as brainliest!!

Jeff bought 4 oranges and 7 apples for a total of $4.88. Gene bought 12 oranges and 8 apples for a total of $7.88. What is the cost of each orange and each apple?

Answers

4x+7y=4.88 -> mult by -3 -> -12x-21y=-14.64
12x+8y=7.88
-12x-21y=-14.64
Add the two above equations together, the y will be left:
-13y=-6.76
y=0.52 —> cost of each apple (plug back into one of original equations, I chose 4x+7y=4.88:
4x+7(0.52)=4.88
Solve for x.
x=0.31 —> cost of each orange
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