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3 years ago

Sarah competes in a long jump competition.

1 answer:

3 0

Ok so her best jump equation would be
4.25x 1.12 = 4.76
Sarahs best jump = 4.76
The equation for the winning jump would be
4.76x 1.15 = 5.474
The winning jump would be = 5.474

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-3x+4y=7 y=3x-5 I NEED HELP PL Z HELP ME

andrew-mc [135]

$- 3x + 4y = 7 \\ y = 3x - 5$

[Substitute the given value of y into the first equation]

$- 3x + 4 \times (3x - 5) = 7$

[Distribute 4 through the parentheses]

$- 3x + 12x - 20 = 7$

[Collect like terms]

$9x - 20 = 7$

[Move the constant to the right-hand side and change its sign]

$9x = 7 + 20$

[Add the numbers]

$9x = 27$

[Divide both sides of the equation by 9]

$x = 3$

[Substitute the given value of x into the second equation]

$y = 3 \times 3 - 5$

[Multiply the numbers]

$y = 9 - 5$

[Subtract the numbers]

$y = 4$

[The possible solution of the system is the ordered pair (x,y)]

$(x,y)=(3,4)$

3 0

3 years ago

Solution q-2r=4 q+r=37

GenaCL600 [577]

Q-2r=4, therefore: q=4+2r.

Plug the value of q into q+r=37, so you get:

4+2r+r=37

3r=37-4=33

3r=33

Therefore: r=11.

q-2r=4, but r=11, so:

q-2(11)=4

q-22=4

Therefore q=26.

Check if the answer is correct using second equation:

q=4+2r=4+2(11)=4+22=26.

So: q=26 and r=11.

4 0

4 years ago

Read 2 more answers

I have 23 hundredths and 12 tenths. Who am I? Convince by using Base 10 Blocks

hoa [83]

Answer:

1.43

Step-by-step explanation:

12 tenths ⇒ 1.2

23 hundredths ⇒ 0.23

0.23 + 1.2 = 1.43

4 0

2 years ago

Identify each pair of angles.

ICE Princess25 [194]

I believe it should be alternate interior angles

6 0

3 years ago

Josie is creating 5 music playlists for her dance classes. She will use a total of 60 songs. Each playlist will have 7 older son

blagie [28]

Answer: 60=5(7+x)

X= 5

Step-by-step explanation:

60 is the total amount of songs so it’s going to be divided into 5 different playlists. And those playlists are going to have 7 older songs plus the amount of new songs.

3 0

3 years ago