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3 years ago

Write an equation to solve this problem:

Mathematics

1 answer:

KiRa [710]3 years ago

5 0

Answer:

The answer to your question is: One has saved $35 and the other $20

Step-by-step explanation:

Data

2 brothers

combined savings = $55

One brother has $15 more than the other

x = savings of one brother

y = savings of the other brother

- Process

Write an equation or two equations and solve it for x and y

(1) x + y = 55

(2) x = y + 15 Solve this system by substitution (2) in (1)

y + 15 + y = 55

2y = 55 - 15

2y = 40

y = 40/2

y = $ 20

x = 20 + 15

x = $ 35

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3 years ago

|x+2|-3=9 please help!!! Solve twice!!! Two answers!!!

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6 0

3 years ago

Read 2 more answers

(2/3,1) and slope m=4/5

ad-work [718]

Answer:

y-1=4/5(x-2/3)

Step-by-step explanation:

y-y1=m(x-x1)

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7 0

3 years ago

Melani has $3,106.12 in her back account on Wednesday. On Thursday she deposited $85 .On friday she spent $8.25 for lunch. What

lesya692 [45]

Answer:

Melanie's account balance now is $3182.87.

Step-by-step explanation:

Given:

Amount of money in her account = $3106.12

Amount deposited on Thursday = $85

Amount spent for lunch on Friday = $8.25

We need to find the remaining balance in Melanie's account.

Solution:

Now we know that;

Remaining balance in her account is equal to Amount of money in her account plus Amount deposited on Thursday minus Amount spent for lunch on Friday.

framing in equation form we get;

Remaining balance in her account = $\$3106.12 +\$85 - \$8.25=\$3182.87$

Hence Melanie's account balance now is $3182.87.

3 0

3 years ago

An ecologist wishes to find the height of a redwood tree that is on the other side of a creek, as shown in the figure below. Fro

tatyana61 [14]

Answer:

The height h of the tree is 62.0 feet

Step-by-step explanation:

<u><em>The picture of the question in the attached figure</em></u>

step 1

Find the length side AC

In the right triangle ABC

$tan(85.8^o)=\frac{AC}{AB}$ ----> by TOA (opposite side divided by the adjacent side)

substitute the given value

$tan(85.8^o)=\frac{AC}{24.8}$

$AC=tan(85.8^o)(24.8)$

$AC=337.7\ ft$

step 2

Find the length side CD (height of the tree)

In the right triangle ACD

$tan(10.4^o)=\frac{CD}{AC}$ ----> by TOA (opposite side divided by the adjacent side)

substitute the given value

$tan(10.4^o)=\frac{CD}{337.7}$

$CD=tan(10.4^o)(337.7)$

$CD=62.0\ ft$

7 0

3 years ago