All categories

2 years ago

7- Simplify each expression. -8+2(-5)

2 answers:

4 0

To simplify, we use PEMDAS. Since a number near a parentheses means multiplication, and there is no other operations that we need to do first, we do the multiplication first. 2(-5) = 2*(-5) = -10.
Next we add -8 and -10. -8+(-10) is the same as -8-10, which is -18. Hope this helps

postnew [5]2 years ago

3 0

Answer:

-18

Remember PEMDAS.

Step-by-step explanation:

You might be interested in

The perimeter of a square measures 1.3 meters. What is its side length in centimeters?

ololo11 [35]

Side length in centimeters is

A) 130 cm

5 0

3 years ago

Keeping in mind the rules for significant figures, determine how many milliliters there are in 0.073 gallons. 1 gallon = 4 quart

andreev551 [17]

we are given

there are in 0.073 gallons

we can see that there are two non-zero places after decimals

so, there are two siginificant figures

step-1: Change gallons to quarts

we know that

1 gallon = 4 quarts

so, we can write as

$0.073gallons=0.073*1gallon$

$0.073gallons=0.073*4quarts$

$0.073gallons=0.292quarts$

step-2: Change into liter

$0.073gallons=0.292quarts$

we know that

1 liter = 1.057 quarts

$1 quart=\frac{1}{1.057} litre$

$0.073gallons=0.292*1quarts$

$0.073gallons=0.292*\frac{1}{1.057} litre$

$0.073gallons=0.27625 litre$

step-3: Change into millilitre

we know that

$1L=1000mL$

$0.073gallons=0.27625*1 litre$

$0.073gallons=0.27625*1000 mL$

Since, it is asking for only two significant figures

so, we can also write as

$0.073gallons=0.28*1000 mL$

$0.073gallons=280 mL$ ...................Answer

3 0

2 years ago

The millers drove 150 miles in 3 hours at what rate how long will it take them to drive 400 miles

valentina_108 [34]

Rate = (150 miles)/(3 hrs) = 50 mph

so . . .

(50 mph)*(time) = 400 miles

*divide both sides by 50 mph

time = (400 miles)/(50 mph) = 8 hrs

time = 8 hrs

8 0

3 years ago

Read 2 more answers

Prize Pooches charges a flat monthy lee or $22, plus $3.65 per hour. Daring Dogs

ser-zykov [4K]

Answer:

C.) H> 12

Step-by-step explanation:

1. At 12 hours Prize pooches has a total of $65.8

at Daring dogs it's rate is also $65.8.

2. Anything<u> greater</u> than 12 hours though, Prize pooches starts to have a higher total.

8 0

2 years ago

Factor out the GCF from the following polynomials.

Ber [7]

Answer:

Step-by-step explanation:

i hope

the the answer is 2ab3(a4+3b3−7ab)

hope it helps.

sorry if it wrong

-Delilah

5 0

2 years ago