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3 years ago

What is the value of a2 - b when a = 5 and b = -2 ?

Mathematics

2 answers:

Nuetrik [128]3 years ago

7 0

Answer:

Step-by-step explanation:

When we plug our numbers into this expression, it reads:

5*2-(-2)

This is also the same as 5*2+2

So, 5 times 2 is 10 plus 2 equals 12.

alexandr1967 [171]3 years ago

7 0

The answer is 12

Step-by-step explanation:

5*2-(-2)

This is also the same as 5*2+2

So, 5 times 2 is 10 plus 2 equals 12.

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Find the value of x in similar polygons below

muminat

Answer:

Choice A

Step-by-step explanation:

When you have two shapes that are similar their sides are always proportional. So all we have to do is set up a proportion.

$\frac{18}{4.5}=\frac{x}{1.5}$

Now we cross multiply and solve

$27=4.5x\\x=6$

And that's it x equals 6 feet.

4 0

3 years ago

I need help quick!! its due in 10 mintunes helpp!!!!!

irina1246 [14]

Answer:

b) 10

Step-by-step explanation:

(3×10+46)+14 = 90

Hope this helps!!!!!

8 0

2 years ago

Read 2 more answers

in 2014 the attendance at jefferson schools fall festival was 650 in 2015 the attendance was 575 what was the percent change

Gnoma [55]

There was 11.54% decrease in attendance.

Step-by-step explanation:

Attendance in 2014 = Old value = 650

Attendance in 2015 = New value = 575

Change = New value - Old value

Change = 575 - 650 = -75

The negative sign indicates a decrease in attendance.

Decrease percentage = $\frac{Change}{Old\ value}*100$

$Decrease\ percent=\frac{75}{650}*100\\\\Decrease\ percent=\frac{7500}{650}\\\\Decrease\ percent=11.538\%$

Rounding off to nearest hundredth

Decrease percent = 11.54%

There was 11.54% decrease in attendance.

Keywords: percentage, subtraction

Learn more about subtraction at:

#LearnwithBrainly

4 0

3 years ago

Read 2 more answers

Ricardo bought a bicycle for $98.00. He sold it to his friend Sandy for 5/6

svet-max [94.6K]

Answer:

Ricardo bought it for $98.00

Sandy bought it for $81.66 [5/6×98]

Jennifer bought it for $48.99. [ 3/5×81.66]

3 0

3 years ago

Find the volume of the following figure. 6 cm3 7 cm3 8 cm3 5 cm3

Cerrena [4.2K]

Answer:

7 cm³

Step-by-step explanation:

Assume each cube has an edge 1 cm in length.

Each cube has volume 1 cm³.

There are 7 cubes.

volume = 7 cm³

5 0

2 years ago