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Step2247 [10]
3 years ago
13

Solve y = 4x – 17 3x + y = 4 with the substitution method PLEASE HELP

Mathematics
2 answers:
expeople1 [14]3 years ago
7 0

Answer:

Step-by-step explanation:

y = 4x – 17..........(1)

3x + y = 4............(2)

Substituting y = 4x - 17 in (2)

3x + 4x - 17 = 4

7x = 4 + 17

7x = 21

x = 21/7

x = 3

Putting x = 3 in equation (1)

y = 4x - 17

y = 4(1) - 17

y = 4 - 17

y = -13

Firdavs [7]3 years ago
3 0

Hey! :)

First, let us learn about substitution.

Let's say we have an equation 3x + 1y = 1 and 1x + 2y = 6

You need to pick one equation to solve for x.

Let's say we picked 1x + 2y = 6 for x to solve for y.

Then you'd solve.

Now onto the equation.

- Substitute 4x−17 for y in 3x+y=4:

3x+y=4

3x+4x−17=4

7x−17=4 - Simplify both sides.

7x−17+17=4+17 Let's add 17 to both sides.

7x=21

Divide both sides by 7.

7x/7 = 21/7

x = 3

Hope you had a great experience on Brainly!

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A pyramid has a square base with an area of 169ft. What is the perimeter of the base of the pyramid?
ArbitrLikvidat [17]

Answer:52 ft.

Step-by-step explanation: If the area of the base of the pyramid is

169

ft

2

then each side of the base is

13

ft

long because the base of the pyramid is a square.

Length of the side,

s

=

√

169

=

13

Iif we take the area of a square

A

=

s

2

where

s

=

13

we get the area of the base to be

169

ft

2

thus proving that each side of the base is

13

ft

long.

So to find the perimeter of the base of the pyramid we use the formula:

P

=

4

s

where

s

=

13

ft

and thus,

p

=

4

⋅

13

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=

52

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7 0
3 years ago
I need help finding the answer
spin [16.1K]
The answer is C
you can buy three shirts because 11×3=33 then you use your coupon and it becomes 33-6= 27
6 0
3 years ago
Read 2 more answers
*6. Five brothers each bought two hot dogs & a bag of chips. If the chips
Oxana [17]
D- 1.65 per hot dog

Take the amount of the bag of chips which is 1.25 and multiply it by 5 because that’s how many people there are and they each bought one bag
1.25 x 5= 6.25
Next you want to subtract that amount from the total so we can just have the amount of money spent on hot dogs
22.27-6.25=16.50
Then you want to divide 16.50 by 5 because they all bought the same amount of hot dogs and this will get us to the amount of to hot dogs
16.50/5=3.30
Finally you want to divide 3.30 by 2 which will get us the price for 1 hot dog
3.30/2=1.65

There you go!!
3 0
3 years ago
Read 2 more answers
HELP!
Readme [11.4K]

Answer: You have a better chance if you do not replace the red marble.

Step-by-step explanation:

The bag has:

5 red marbles

8 blue marbles

4 yellow marbles

3 green marbles

A total of 5 + 8 + 4 + 3 = 20

You want to draw a red marble and then a blue marble.

The probability of drawing a red marble in your first attempt is the number of red marbles divided the total number of marbles:

P1 = 5/20  

now you want to draw a blue marble.

If you replace the red marble, you have 20 marbles again in the bag, then the probability of drawing a blue marble is:

P2 = 8/20

The joint probability is P = P1*P2 = (5/20)*(8/20) = 0.1

If you do not replace the red marble, you have 19 total marbles in the bag, then the probability of taking a blue marble is:

P2 = 8/19

The joint probability is:

P = P1*P2 = (5/20)*(8/19) = 0.105

The probability is slightly bigger if you do not replace the red marble.

7 0
4 years ago
Read 2 more answers
I don't really get it ​
blsea [12.9K]

I can't see the whole pic...

what is written on the side?? I can see part of it and I think it is telling you what to do. If not what is thew question?? All you are showing is the lines.

3 0
3 years ago
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