3 years ago

Hard Look at attachment or picture

Mathematics

1 answer:

ioda3 years ago

6 0

Answer:

x = 10.5

Step-by-step explanation:

Work in the screenshots

I used a online calculator

symbolab. com

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Isaiah has $7.15 in Dimes and Nickels. He has a total of 91 coins. How many of each coin does he have? Group of answer choices d

yarga [219]

Answer:

Dimes = x = 52

Nickels = y = 39

Step-by-step explanation:

Let

Dimes = x

Nickels = y

x + y = 91 (1)

0.10x + 0.05y = 7.15 (2)

From (1)

x = 91 - y

Substitute x = 91 - y into (2)

0.10x + 0.05y = 7.15

0.10(91 - y) + 0.05y = 7.15

9.10 - 0.10y + 0.05y = 7.15

- 0.10y + 0.05y = 7.15 - 9.10

-0.05y = -1.95

y = -1.95 / 0.05

= 39

Substitute y = 39 into (1)

x + y = 91

x + 39 = 91

x = 91 - 39

x = 52

Dimes = x = 52

Nickels = y = 39

7 0

3 years ago

The original price of a Shirt was $45. In sales, the shirt is reduced to $32.50. Calculate the percentage reduction.

Klio2033 [76]

Answer:

27.8%

Step-by-step explanation:

$\frac{32.5}{45} =0.722$

0.722 = 72.2%

The % reduction is:

(100-72.2)% = 27.8%

Hope this helps

8 0

2 years ago

Please Help!!!

scoray [572]

The answer to the problem is 5.

6 0

2 years ago

Beth has 250 comic books in her collection. She begins to sell 20 of them each week. Martin has 80 comic books in his collection

Shtirlitz [24]

Each weeks for how long?

8 0

3 years ago

Read 2 more answers

Question 1 (3 points)

Leokris [45]

Answer:

A) The slope of a line is basically the steepness of it or it can be defined as the change in y for a unit change in x along the line.

B) -1

Step-by-step explanation:

The point here are ( -2,6 ) and ( 0,4 ).

Here $x_1=-2$ , $y_1=6$

And $x_2= 0$ , $y_2=4$

$m=\frac{4-6}{0-(2)} =-1$

5 0

3 years ago

*Hard* Look at attachment or picture

Hard Look at attachment or picture