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NeX [460]
3 years ago
9

What is the surface area of the square pyramid? (Figure is not drawn to scale.)

Mathematics
1 answer:
Reil [10]3 years ago
6 0
Area of the base = 8^2 = 64

area of 1 traingle = 1/2 * 8 * 5.4 =  21.6

there are 4 triangular sides  so their area = 4 * 21.6  = 86.4

Total surface area = 64 + 86.4 =  150.4 cm2

D
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Sarah calculates that she spends 15% of a school day and science class if she spends 75 minutes and science how many minutes doe
Monica [59]
.15x = 75 Divide both sides by .15 you get 500 minutes
4 0
4 years ago
The cost (c) to hire a dog trainer is varies directly with the amount of time (h) in hours spent training the dog.
NNADVOKAT [17]

Answer:

Part A) The proportional equation is c=55h

Part B) 8 hours of training

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form y/x=k or y=kx

Let

c -----> the cost to hire a dog

h ----> the amount of time in hours

The linear equation is equal to

c=kh

Sue spent $660 on 12 hours of obedience training for her dog Muffin

Find the value of k (constant of proportionality)

k=y/x

substitute the values

k=660/12=55

therefore

The linear equation is

c=55h

For c=\$440

Find the value of h

substitute in the equation and solve for h

440=55h

h=440/55=8\ hours

5 0
3 years ago
Convert each percentage into a decimal and match them with the appropriate result.
skad [1K]

Answer:

32% = 0.32

50% = 0.50

34% = 0.34

Step-by-step explanation:

0.32 = 32%

0.50 = 50%

0.34 = 34%

P.S Can I have brainliest?

5 0
2 years ago
Read 2 more answers
Juan Ramirez sells suits in a major department store on weekends. He earns a commission of 5 percent on the first ten suits, and
Zepler [3.9K]
So, the first 10 suits came with a commission of 5%, so for each suit it was:

250*5%

this is \frac{250*5}{100} = \frac{25*5}{10} = \frac{25}{2} =12.5

but this counts for 10 suits, so together his commssion was 10*12.5=125 dollars

and the "extra" 3 suits came with a comittion of 5+3 percent, so 8 percent, which is


 
 \frac{250*8}{100} = \frac{25*8}{10} = \frac{25*4}{5} =20

for each suit, and 60 in total.

his total comission was 125+60=185 dollars.

8 0
3 years ago
To paint a sunset, you make a shade of orange paint using 55 drops of red paint for every 88 drops of yellow paint. If you use 1
alexandr402 [8]
Since the ratio of red drops to yellow drops is 55:88 and you have 1515 red drops, the yellow drops needed is given as
If 55=1515
   88=?
88/55*1515=2424
therefore 2424 drops of yellow will be needed to make a shade of orange
8 0
3 years ago
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