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3 years ago

Which ordered pair is a solution of the equation y=-9+4 (10,-86) or (-4,-58) or (6,-41) (-6,57)

Mathematics

1 answer:

arlik [135]3 years ago

7 0

Which ordered pair is a solution of the equation y=-9+4 (10,-86)

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5(y-4)=7(2y+1) I need the answer

8_murik_8 [283]

Answer: $y = -3$

Move all terms containing y to the left, all other terms to the right

Add -14y to each side of the equation

$-20 + 5y + -14y = 7 + 14y + -14y$

Combine like terms: 5y + -14y = -9y

$-20 + -9y = 7 + 14y + -14y$

Combine like terms: 14y + -14y = 0

$-20 + -9y = 7 + 0\\-20 + -9y = 7$

Add '20' to each side of the equation

$-20 + 20 + -9y = 7 + 20$

Combine like terms: -20 + 20 = 0

$0 + -9y = 7 + 20\\-9y = 7 + 20$

Combine like terms: 7 + 20 = 27

$-9y = 27$

Divide each side by -9

$-9y/9=27/-9\\y=-3$

8 0

3 years ago

Three people who work full-time are to work together on a project, but their total time on the project is to be equivalent to th

arlik [135]

1/6 of their time has to be put in to the project.

7 0

3 years ago

Factorization of 4x+7-x

klemol [59]

Answer:

3x+7

Step-by-step explanation:

4x+7-x=4x-x+7=3x+7

8 0

3 years ago

A treasure map says that a treasure is buried so that it partitions the distance between a rock and a tree in a 5:9 ratio. Marin

Tanya [424]

Let the coordinates of the treasure be (x,y).
Let $d_{1}$ = distance from the rock to the treasure.
Let $d_{2}$ = distance from the tree to the treasure.
$d_{1} = \sqrt{(x\2 + (y-2)^2}$
$d_{2} = \sqrt{(16-x)^2 + (21-y)^2}$
We want $\frac{ d_{1} }{ d_{2} }$ = 5/9 in order to locate the treasure.

Note that 5/9 = 0.556 (approx)
Test (11.4, 14.2)
d1 = 14.8, d2 = 8.2, d1/d2 = 1.8 Incorrect
Test (7.6, 8.8)
d1 = 8.2, d2 = 14.8, d1/d2 = 0.554 Correct
Test (5.7, 7.5)
d1 = 6.13, d2 = 16.98, d1/d2 = 0.36 Incorrect
Test (10.2, 12.6)
d1 = 12.8, d2 = 10.2, d1/d2 = 1.255 Incorrect

Answer: The correct answer is (7.6, 8.8)

4 0

3 years ago

Read 2 more answers

What is seventeen and two fourths in simplest form? i’m really stuck on this question

elixir [45]

Answer:

17 1/2

Step-by-step explanation:

17 2/4 is the given and 2/4 is equivalent to one half so the answer is 17 1/2.

Hopefully you understand it now.

5 0

3 years ago