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2 years ago

-(-81/-9) is this positive or negative?

Mathematics

1 answer:

Delvig [45]2 years ago

8 0

Negative. There are - < these signs before the numbers, so that means they’re negative

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Examine the figure. What is the measure of angle a?

pantera1 [17]

A = 180-90-31

A = 59

Answer: 59

4 0

2 years ago

In Daniel’s fifth grade class, 37.5% of the 24 students walk to school. One-third of the walkers got a ride to school today from

Alexeev081 [22]

The percentage of walkers who got a ride is 37.5/3=12.5%
The number of that is 0.125*24=3 students.

5 0

3 years ago

a car needs fixing and Abe can fix it for $70 per hour with a $60 part, but Gabe can fix it for $80 an hour with a $40 part. How

Nat2105 [25]

After 2 hours time , both Abe and Gabe to cost the same amount .

<u>Step-by-step explanation:</u>

Here we have , a car needs fixing and Abe can fix it for $70 per hour with a $60 part, but Gabe can fix it for $80 an hour with a $40 part. We need to find How long will it take for both Abe and Gabe to cost the same amount .Let's find out:

Let the time for which both Abe and Gabe to cost the same amount be x hours, so according to question scenario we will have equation as :

⇒ $70x+60=80x+40$

⇒ $(70x+60)-70x=(80x+40)-70x$

⇒ $60=(10x+40)$

⇒ $60-40=(10x+40)-40$

⇒ $20=10x$

⇒ $x=2$

Therefore , After 2 hours time , both Abe and Gabe to cost the same amount .

6 0

2 years ago

What would be the difference at the end of one year between the simple interest earned on a deposit of $450 at 4.5% and the comp

Len [333]

Answer: $0

Step-by-step explanation:

The formula for simple interest is expressed as

I = PRT/100

Where

P represents the principal

R represents interest rate

T represents time in years

I = interest after t years

From the information given

T = 1 year

P = $450

R = 4.5%

Therefore

I = (450 × 4.5 × 1)/100

I = 2025/100

I = 20.25

For compound interest,

Initial amount deposited into the account is $450 This means that the principal,

P = 450

It was compounded annually. This means that it was compounded once in a year. So

n = 1

The rate at which the principal was compounded is 4.5%. So

r = 4.5/100 = 0.045

It was compounded for just a year. So

t = 1

The formula for compound interest is

A = P(1+r/n)^nt

A = total amount in the account at the end of t years. Therefore

A = 450 (1+0.045/1)^1×1

A = 450(1.045) = $470.25

Compound interest = 470.25 - 450 = 20.25

The difference is 20.25 - 20.25 = 0

8 0

2 years ago

Read 2 more answers

1/10 of what number is 10 times as much as 8

Nataly_w [17]

Just think of 8x10 it equals 80

4 0

3 years ago