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Stella [2.4K]
3 years ago
12

A.(7,8) B.(2,22) C.(2,8) D.(3,29)

Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
6 0
To solve this system using the subst. method, equate y = 7x + 8 to y = x + 20.

Then 6x = 12, and x = 2.  To find y, subst. 2 for x in either of the given equations.  

Write your solution as (2, y).
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Are you good at math then here
Nikolay [14]

Answer:

see below

Step-by-step explanation:

The term -2t suggests that there are "t" of something that costs $2, or there are 2 of something that costs "t" dollars. The options marked include both interpretations.

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3 years ago
You have 1200 feet of fencing and you want to make two fenced in enclosures by splitting one enclosure in
NARA [144]

Let x = length and y = width

You would have 2 lengths, so 2x and 3 widths, so 3y

Those need to equal total length of fence:

2x + 3y = 1200

The 3 widths would equal total fence minus the 2 lengths:

3Y = 1200-2x

Solve for y: y = 400 -2/3x

Area = length x width = xy. Replace y :

Area = x(400-2/3x) = 400x-2/3x^2

Differentiate:

400-4x/3 =0

4x/3 = 400

4x = 1200

X = 300

Y = 400-2/3(300) = 200

The dimension would be 300 ft x 200 ft

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2 years ago
1. Find the value of x in the figure below.
stich3 [128]
12 inches Bc angle J is 42 degrees
7 0
2 years ago
Ezra made 70% of the free throws he attempted last basketball season. If Ezra attempted 50 free throws last season, how many did
Lera25 [3.4K]
35 :) If you change the percent into a decimal (0.70) and multiply that by 50, you will get the answer!
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3 years ago
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A camera has a listed price of $760.95 before tax. If the sales tax rate is 7.25% , find the total cost of the camera with sales
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Answer:

After sales tax is applied, the camera will cost $816.12! The sales tax will be $55.17.

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