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3 years ago

Evaluate : -80 - (-15) =

Mathematics

2 answers:

frosja888 [35]3 years ago

6 0

Answer:

-65

Step-by-step explanation:

-80 - -15

Two minuses become plus

= -80+15

Subtract and keep the sign of the higher number

= -(80-15)

= -65

NeX [460]3 years ago

4 0

Answer:

I'm glad you asked!

Step-by-step explanation:

$-80-(-15)$

= $-80-(-15)$

= $=-80+15$

$=-65$

The answer is - $65.$

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Please solve this FAST!

Dmitry_Shevchenko [17]

Answer:

1 hour = 7.50

5 hours = 37.50

9 hours = 67.50

<h3>answer is</h3>

7.50 per hour.

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Step-by-step explanation:

like this

$\frac{22.50}{3}$

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4 0

2 years ago

Read 2 more answers

What is the answer to this question

8_murik_8 [283]

Answer:

Step-by-step explanation:

7 (2)^3

We do this according to PEMDAS

The Parentheses here are do indicate what is in the exponent

We do the Exponent first

2^3 = 2*2*2 = 8

7(8)

There is an implied multiplication here

7*8

Now we do the multiplication

8 0

2 years ago

Find the product of the expression:<br> (5p^3) (-1m^8p^2)

Rainbow [258]

Answer:

We conclude that:

$\left(5p^3\right)\:\left(-1m^8p^2\right)=-5p^5m^8$

Step-by-step explanation:

Given the expression

$\left(5p^3\right)\:\left(-1m^8p^2\right)$

Apply the rule:

$a\left(-b\right)=-ab$

so the expression becomes

$\left(5p^3\right)\left(-1\cdot \:m^8p^2\right)=-5p^3\cdot \:1\cdot \:m^8p^2$

Apply the rule:

$a^b\cdot \:a^c=a^{b+c}$

so the expression becomes

$=-5p^{3+2}\cdot \:1\cdot \:m^8$ ∵ $p^3p^2=p^{3+2}$

$=-5p^5\cdot \:1\cdot \:m^8$

$=-5p^5m^8$

Therefore, we conclude that:

$\left(5p^3\right)\:\left(-1m^8p^2\right)=-5p^5m^8$

7 0

2 years ago

How many seconds will it take to get to 150 feet if you can run 11 feet per second

postnew [5]

Answer:

13.64 seconds

Step-by-step explanation:

150 / 11 = 13.636

8 0

2 years ago

Read 2 more answers

Identify the variable(s), set up your equation(s), and solve. Richard has an elder sister who is twice his age and a younger sis

alexdok [17]

Answer:

7 years

Step-by-step explanation:

Given that:

Let Richard's age = x

Elder sister's age = 2x

Youngwr sister's age = x - 2

Product of sisters ages = 70

2x * (x - 2) = 70

2x² - 4x = 70

2x² - 4x - 70 = 0

x² - 2x - 35 = 0

x² - 7x + 5x - 35 = 0

x(x - 7) +5(x - 7) = 0

(x - 7) or (x + 5) = 0

x = 7 or x = - 5

X can't be negative

Hence, x = 7

Richard is 7 years

3 0

2 years ago