Mathematics College

only number 4, and please include the working. also do it with the substitution method not elimination or any other.​

Only Number 4, And Please Include The Working. Also Do It With The Substitution Method Not Elimination

Answers

Answer 1

Answer:

x = -2 and y = 1

Step-by-step explanation:

→ Rearrange x - y = -3 to make y the subject

-y = - x - 3 so y = x + 3

→ Substitute into 2x + y = -3

2x + x + 3 = -3

→ Simplify

3x + 3 = -3

→ Minus 3 from both sides

3x = -6

→ Divide both sides by 3

x = -2

→ Substitute x value into first equation

-4 + y = -3

→ Add -4 to both sides

y = 1

Related Questions

What cultural effect did Napoleon have on Europe?

A.) Napoleon changed culture in Europe by building French art schools throughout Eastern Europe and Spain.

B.) Napoleon spread ideas from the French Revolution throughout Europe, leading to national unity outside of France.

C.) Napoleon impacted European culture by ending monarchies and establishing Communist governments.

D.) Napoleon affected culture by expanding education throughout Europe, leading to a rise in literacy among the wealthy.​

Answers

Answer:

C.

Step-by-step explanation:

B. is your answer

≈Godbless

Can I have help with this question?

Answers

Answer:

Step-by-step explanation:

<2, <3, <6 have the measure of 135 degrees

A function is a special type of relation where

A. one x can map to multiple y's
B. one x can map to only one y

Answers

Answer: the answer would be B :)

Round to nearest tenth

Answers

Answer:

Step-by-step explanation:

this is exactly the same as the 1st one,  just  they put it in a different orientation.   sooo use law of cosines , where

QR = c

a = 12

b = 23

cos(120) = cos (P)

c = sq rt [ a^2+b^2﹣2*a*b*cos(P) ]

QR = sq rt [ 12^2 + 23^2 - 2* 12*23*cos(120) ]

QR = sq rt [ 144 + 529 - 552 * (-0.5 0 ]

QR = sq rt [ 673 + 276 ]

QR = sq rt [ 949 ]

QR = 30.8058

rounded to nearest 10th is

QR = 30.8  :)

Is 5/7 greater than or less than 2/8

Answers

Answer:

greater than lol

Step-by-step explanation:

Answer:

5/7 is grater than 2/8

Step-by-step explanation:

5/7 = 0.714

2/8 = 0.25

therefore 5/7 is grater than 2/8

solve the equation 12n-60

Answers

Answer:

n-5

Step-by-step explanation:

What transformation preserves angle measures but not side lengths?


Translation

Rotation

Reflection

Dilation

Answers

Answer:

translation

Step-by-step explanation:

I'm pretty sure

marcia is typing her report for history class. She can type 4 pages in 45 minutes. At that rate, how many pages does she type per hour? Round to the nearest hundredth.

Answers

Answer:

5.34 pages/h

Step-by-step explanation:

4/45 = p/60

p ≈ 5.34

Answer:

Step-by-step explanation:

3/4 of an hour is the same as 0.75

Write a proportion.

4 (pages)/0.75 (hours)=p(pages)/1 hour

Cross multiply and divide

(4x1)÷0.75=5.33 (rounded to the nearest hundred)

p=5.33

Marcia can type 5.33 pages per hour.

1/2 + 3/4 + 3/8 change your improper fraction into a mixed number.

Answers

Answer:

13/8

Step-by-step explanation:

find the value of each variable

Answers

it’s 68. i did it earlier

PLEASE HELP FOR 5 STAR AND BRAINLIST TYSM

Answers

Answer:

Step-by-step explanation:

1) 792÷ 36=22

2) 1/2 ÷ 3 = 1/6

3) D

4) its 10,00 cause 7.741 x 10 = 77,410

5) the answer in decimal is 60.089

Baby booked into the muffins how many total muffins did he make

Answers

Can you show the problem please!

I need math help as soon as possible please

Answers

Answer:

jrkfkgkgf

Step-by-step explanation:

gfkfkfkfkknnfjjgjgjgkgjgjgjgjggjg

¡23
120+3
Use the example as a model. Simplify the
expressions.
= i20 i3
37
DONE
= 15 x 13
= 1 x 13
= -i

Answers are in the picture (don’t need to answer this question this is just here cause It hasn’t been answered yet)

Answers

Answer:

Hola hablo alemana

Step-by-step explanation:

Find the product

1. 3/2 ×2/5
2. 3/-5×-5/3​

Answers

Answer:

1- 3/5 or .6

2- 1

Step-by-step explanation:

If 2x - 3y = 24 and 3x + 4y = 2, what is the value of x - y?

Answers

Answer:

2x-3x=24____eqn 1

3x+4y=2____eqn 2

solve eqn 1 and 2 simultaneously using elimination method

eliminate x use the coefficients of x in the two equations to multiply each other i.e

3(2x-3y=24)

2(3x+4y=2)

6x-9y=72

6x+8y=4

eliminate x using the subtraction sign(-)

6x-6x-9y-(+8y)=72-4

-9y-8y=68

-17y=68

divide both side by the coefficient of y

y=68/-17

y=-4

put y=-4 in eqn 2

3x+4y=2

3x+4(-4)=2

3x-16=2

collect like term

3x=2+16

3x=18

divide both side by the coefficient of x

x=18/3

x=6

since we're asked to find x-y

6-(-4)

6+4=10

This circle is centered at the origin, and the length of its radius is 2. What iS
the circle's equation?

Answers

Answer:

Step-by-step explanation:

If the center of the circle is at the origin, the general formula for the circle is

x^2 + y^2 = r^2.

Since r  = 2 units in this particular problem, the equation of the circle is:

x^2 + y^2 = 2^2,  or  x^2 + y^2 = 4

What’s the equation of the line in fully simplified slope-intercept form

Answers

Answer:

y= -x - 8

Step-by-step explanation:

To write an equation in slope-intercept form, we naturally need both the slope and the y-intercept. Here, our y-intercept is -8, and our slope is -1. The general form of a line in slope intercept form is y = mx + b, where m is the slope and b is the y intercept. Using our values of m = -1 and b = -8 then gives us the equation y = -x - 8.

The ratio of the girls to boys in the school
marching band is 10 to 8. If there are 32 boys in
the marching band, how many of the students in
the marching band are girls?
A 38
B, 40
C. 26
D, 42

Answers

B.40
Because 32/8=4. So you have to multiply 10x4 to get 40 girls
40 the answer is B ####

will give brianlist

Jennifer has a hair ribbon that is 12 centimeters long. What is the length of the ribbon in millimeters? Use the number of zeros of the product when multiplying a number by a power of 10 to help you.


120 millimeters

12 millimeters

1,200 millimeters

1.2 millimeters

Answers

A. 120 millimeters.

newtons second law states that force equals mass times

Answers

Answer:

acceleration

Explanation:

Newtons second law: "Force is equal to the change in momentum per change in time. For a constant mass, force equals mass times acceleration."

Help me pleaseeeeeeeeeeeeee

Answers

Answer:

Step-by-step explanation:

i can't see the number srry:(

I can’t also see the numbers.. did u forget to put it in?

Donna makes 8 dollars for each hour of work write an equation to represent her total pay p after working h hours

Answers

It would be 8 times h being the number of hours worked which would give you p her pay 8(h)=p

Answer:

8h=p

Step-by-step explanation:

P is pay

H is hour

u make 8 dollars for an hour, so for h hours it would be 8h

Given A(-3,2), B(-1,4), and C(-6,3) *
Rotate 180 degrees around the origin. Name the coordinates of B'.

Answers

Answer:

2,6 are the coordinates of B

Step-by-step explanation:

If 5 candy bars cost $6, how much will 8 candy bars cost?
(SHOW THE WORK)

Answers

5/6=.8333. 8-5=3. 3*.8333=2.5. 2.5+5=7.5. $7.5 for 8 bars.

Answer:

48$ Hope this helps! (●'◡'●)

Step-by-step explanation:

Square root of 3
Square root of 36
Square root of 9
Which number is irrational?

Answers

Answer:

Square root of 3

Step-by-step explanation:

Answer:

can you help me with this math am not good enough

I need help with the first one plz

Answers

Answer:

The answer is $3.09

Step-by-step explanation:

Hope this helps

Solve for x
- 7 = x - 2

Answers

Answer:

x = -5

Step-by-step explanation:

move the variable tothe left hand side change the sign

-x-7= -2

Calculate the sum

-x =5

change the sign on both of the equations

x =

Math!!!! Fined the area of the triangle

Answers

Answer:

Area = 40 cm²

Step-by-step explanation:

Area of triangle is derived by the formula,

Area = [tex]\frac{1}{2}(\text{Base})(\text{Height})[/tex]

Length of Base = 8 cm

Height of the triangle = 10 cm

Therefore, area of the given triangle = [tex]\frac{1}{2}(8)(10)[/tex]

                                                             = 40 cm²

need help ASAP!!!!!

What is the common ratio for f(x)=2^x-3+5

Answers

Answer:y=2x−3+5

Step-by-step explanation:

Do you mean 2^(x-3) + 5?

If so, y=41/8,
there are no zeros (x-intercepts)
Domain: xER
Horizontal asymptote at y=5
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