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Sergio [31]
3 years ago
10

Heather purchased a prepaid phone card for $30 . Long distance calls cost 14 cents a minute using this card. Heather used her ca

rd only once to make a long distance call. If the remaining credit on her card is $28.18 , how many minutes did her call last?
Mathematics
2 answers:
harina [27]3 years ago
7 0

Answer:

13 Minutes

Step-by-step explanation:

30-28.18=1.82

1.82 devided by 0.14= 13 minutes

answer 13 minutes

Ber [7]3 years ago
4 0
I belive it took 13 minuites but I’m not positive
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Type the correct answer in the box​
Lubov Fominskaja [6]

Answer:

216 cm^2.

Step-by-step explanation:

There are 6 faces on the prism . 3 pairs with the same area.

The surface area = 2*6*10 + 2 * 6*3 + 2*3*10

=  120 + 36 + 60

= 216 cm^2.

6 0
3 years ago
Which of the following methods can be used to find the derivative of y = arcsin x with respect to z ?
vfiekz [6]

Answer:

B) Ill only

Step-by-step explanation:

This is because y = arcsin x can be re-written as sin y = x, We then differentiate sin y = x implicitly with respect to z to obtain

d(siny)/dz = dx/dz

(cosy)dy/dz = dx/dz

dy/dz = (1/cosy)dx/dz

5 0
3 years ago
What is the slope of a line that is perpendicular to a line whose equation is −2y = 3x + 7 ? Enter your answer in the box.
drek231 [11]
I was just on this .
8 0
4 years ago
Read 2 more answers
12x+7<−11 AND5x−8≥4012
Arte-miy333 [17]

Answer:

No solution

Step-by-step explanation:

Given: 12x+7 and  5x-8\geq 40

Solve both inequality separately.

12x+7              Subtraction property of inequality

12x

12x

x

x

and

5x-8\geq 40               Addition property of inequality

5x\geq 40+8

5x\geq 48

x\geq \dfrac{48}{5}

Hence, the solution of the compound inequality intersection of both solutions.

Please find attachment for number line solution.

No solution

8 0
3 years ago
Read 2 more answers
Find mFE<br> A) 52°<br> C) 76°<br> B) 93°<br> D) 112°
mixer [17]

Answer:

76 degrees

Step-by-step explanation:

GE = 180 since it is a straight line

GE = GR + FE

180 = 7x+6 +6x-8

Combine like terms

180 = 13x-2

Add 2 to each side

182 = 13x

Divide by 13

182/13 = 13x/13

14 =x

We want FE

FE = 6x-8

FE = 6(14) -8

    =84 -8

    =76

3 0
3 years ago
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