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goldenfox [79]
4 years ago
9

5) BRAINLIEST + 15 POINTS :)

Mathematics
1 answer:
MAXImum [283]4 years ago
4 0

Answer:

The answer is D.

Step-by-step explanation:

As the question say x represents number of minutes and y represents total amoumt so $5 and $10 is a fixed amount that are needed to pay for each month. So the expression for each month that is needed to pay is :

y = 0.99x + 5

y = 0.79x + 10

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David wants to build a rectangular fencing with the 5 identical parts for his animals. He has 780 feet of fencing to make it. Wh
Vladimir79 [104]

Answer:

65 ft by 39 ft

Step-by-step explanation:

Let x ft be the length of each part and y ft be the width of each part. The total perimeter of all 5 parts is

6x+10y=780

The length of the large rectangle is 5y ft and the width of the large rectangle is x, so the total area is

A=x\cdot 5y

From the first equation,

y=78-0.6x

Substitute it into the area expression:

A(x)=x\cdot 5(78-0.6x)=390x-3x^2

Find the derivative:

A'(x)=390-3\cdot 2x=390-6x

Equate it to 0:

390-6x=0\\ \\6x=390\\ \\x=65

Then

y=78-0.6\cdot 65=78-39=39

5 0
3 years ago
Whoever gets this right first gets brainly
Dafna11 [192]

Answer:

The answer to this problem is 4

Step-by-step explanation:

2+2= 4

8 0
3 years ago
The size of angle DEF
Masja [62]

Answer

132 degrees

Step-by-step explanation:

Strategy: Find angle DEB and using that fact that DEB + DEF is 180 degrees to find angle DEF

The sum of the four angles of any quadrilateral is 360 degrees.

Since three angles are given, we can use that to find the fourth.

360-(147+93+72)=size of angle DEB. Solving, you get angle DEB is 48.

Also, knowing that segment BF is a straight line, it means that angle DEB + angle DEF is equal to a straight angle (180 degrees).

DEB+DEF=180

48+DEF=180

DEF=180-48=132 degrees.

Thus, angle DEF is equal to 132 degrees.

8 0
3 years ago
PLEASE HURRY!!!
ella [17]

Answer: The answer to this question is

A.n

Step-by-step explanation:

5 0
3 years ago
Find the product. (4p – 6)(4p + 6) a. 16p2 + 36 b. 16p2 – 36 c. 16p2 – 48p – 36 d. 16p2 + 48p + 36
kondor19780726 [428]

Answer:

Brainleist to me!

Step-by-step explanation:

(4p – 6)(4p + 6) =

B)  16 p^2  - 36

just use a online calculator

6 0
3 years ago
Read 2 more answers
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