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2 years ago

For reviewing purposes.

Mathematics

1 answer:

Crazy boy [7]2 years ago

6 0

Answer:

Step-by-step explanation:

9 × 8 + $2^{4}$

=> PEMDAS

so first exponent 2^{4} = 16

next multiplication

9*8 = 72

=> 72 + 16

=> 88

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Anthony has been saving nickels dimes quarters over the last year he knows that he has twice as many nickels as quarters. change

OLga [1]

Answer:

The number of nickel's coin is 150

The number of dime's coin is 35

The number of quarter's coin is 75

Step-by-step explanation:

Let

x ----> the number of nickel's coin

y ---> the number of dime's coin

z ---> the number of quarter's coin

Remember that

$1\ nickel=\$0.05$

$1\ dime=\$0.10$

$1\ quarter=\$0.25$

we know that

$x+y+z=260$ ----> equation A

$0.05x+0.10y+0.25z=29.75$ ----> equation B

$x=2z$ ----> equation C

substitute equation C in equation A and equation B

$2z+y+z=260$

$3z+y=260$ ---> equation A1

$0.05(2z)+0.10y+0.25z=29.75$

$0.35z+0.10y=29.75$ -----> equation B1

Solve the system of equations A1 and B1 by graphing

Remember that the solution is the intersection point both graphs

The solution is the point (75,35)

see the attached figure

z=75, y=35

<em>Find the value of x</em>

$x=2(75)=150$

therefore

The number of nickel's coin is 150

The number of dime's coin is 35

The number of quarter's coin is 75

8 0

3 years ago

The radio of boys to girls in a school is 4:5 there are 80 girl. How many boys are there?

love history [14]

Answer:

64=boys

Step-by-step explanation:

Boys to girls

4:5

80=girls

80÷5=16×4=64

6 0

3 years ago

If tailia had 56 apples, her friend gave her 4, and her other friend gave her as many that added at 64 in today. How many apples

densk [106]

<h2><u>D:</u></h2><h2><em /></h2><h2><em>The awnser is </em><u><em>4</em></u><em>!! Hope this helps!! <3</em></h2>

3 0

3 years ago

Read 2 more answers

How to solve how many 3/4s are in 2 with multiplication

ASHA 777 [7]

Answer:

If you divide first (2 ÷ 3/4) just multiplu when you check your math.

7 0

3 years ago

Turn 18 2/5 into a decimal

Studentka2010 [4]

18 2/5 = 92/5 = 18.4 as a decimal;

6 0

3 years ago