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sergij07 [2.7K]

3 years ago

9

Evaluate the expression: 7 + |2 + (-5)| × |-5| - 3 47 20 19 -20

1 answer:

Darya [45]3 years ago

7 0

Using order of operations (PEMDAS) :-

7 + |2 + (-5)| × |-5| - 3

= 7 + |-3| * 5 - 3

= 7 + 3 * 5 - 3

= 7 + 15 - 3

= 19 answer

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THREE QUESTIONS WILL GIVE BRAINLIEST

Shkiper50 [21]

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8 0

3 years ago

Matthew has $25 he goes to the movie and spent eight dollars on a movie ticket then four dollars on popcorn do you want to frien

Virty [35]

Answer: $23

Step-by-step explanation:

1) 25-8=17

2) 17-4= 13

3) 13+10= 23

Matthew has $23 now

8 0

4 years ago

Find the circumference of a circle where r=1.5

il63 [147K]

Answer:

there are three different types of answers to this and all of them have to do with the perspective of pi

1) if you don't want to see the decimals and you want to leave pi alone your answer would be this

3pi

2) if you want to solve for pi it would be

9.43 respectively

3) if you want pi to just be narrowed down to 3 digits 3.14 your answer would be

9.42

Step-by-step explanation:

formula

C=2*pi*R

plug in

2*pi*1.5

5 0

3 years ago

Read 2 more answers

there are nickels, dimes, and quarters in a piggy bank. altogether, the coins are worth $3.65. the number of dimes is three time

hoa [83]

This question is solved using a system of equations, and doing this, we get that: There are 9 quarters, 4 nickels and 12 dimes.

I am going to say that:

x is the number of nickels.

y is the number of dimes.

z is the number of quarters.

In all, they are worth $3.65.

A nickel is worth $0.05, a dime is worth $0.1 and a quarter is worth $0.25, so:

$0.05x + 0.1y + 0.25z = 3.65$

Dimes: 3 times greater than nickels:

This means that:

$y = 3x$

Quarters: One greater than double the number of nickels:

This means that:

$z = 2x + 1$

Value of x:

We have y and z as function of x, so we can replace into the equation and find the value of x, so:

$0.05x + 0.1y + 0.25z = 3.65$

$0.05x + 0.1(3x) + 0.25(2x+1) = 3.65$

$0.05x + 0.3x + 0.5x + 0.25 = 3.65$

$0.85x = 3.4$

$x = \frac{3.4}{0.85}$

$x = 4$

y and z:

$y = 3x = 3(4) = 12$

$z = 2x + 1 = 2(4) + 1 = 9$

There are 9 quarters, 4 nickels and 12 dimes.

A similar question is found at brainly.com/question/17096268

4 0

3 years ago

Resolver usando recíprocos y multiplicativo inverso: 2X-8 = 2 5<br>

STatiana [176]

$2x - 8 = 25$

$2x = 25 - 8$

$x = 17 \div 2$

$x = 8.5$

7 0

3 years ago