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Nata [24]
3 years ago
8

1.Bart's grandfather gave him a collection of 780 old books. Bart purchases 20 books every

Mathematics
1 answer:
Tatiana [17]3 years ago
3 0
The answerrrr is 84 I think
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Evaluate the function.<br> f(x) = -x2 + 5x + 15<br> Find f(9)
Keith_Richards [23]

Answer:

f(9) = 42

Step-by-step explanation:

f(9) = (-9)*2 + 5*9 +15

= -18 + 45 + 15

= 42

5 0
3 years ago
Read 2 more answers
Kieth bought 165 crayons that came in packs of 15. There were 9 colors of crayons how many packs of crayons did Kieth buy?
Andrej [43]

Answer:

11 packs

Step-by-step explanation:

165/15 = 11

6 0
3 years ago
Read 2 more answers
Peyton is a sprinter who can run the 40-yard dash in 4.5 seconds. he converts his speed into miles per hour, as shown below.
oksano4ka [1.4K]
The correct question is
<span>Peyton is a sprinter who can run the 40-yard dash in 4.5 seconds. He converts his speed into miles per hour, as shown below
</span>Which ratio is incorrectly written to convert his speed? 

the picture in the attached figure

we know that
The term (5280 ft/1 mi)  is incorrect
"Feet"<span> needs to be on the bottom to cancel with the previous term. 
</span>"Mile"<span> needs to be on top in the numerator so that the answer can be expressed in "miles per hour"
</span>
the correct term is (1 mi/5280 ft)

5 0
3 years ago
What is m pls help i will mark brainly
-Dominant- [34]

Answer:

x=18

Step-by-step explanation:

Hey There!

So if you did not know all of the angles in a triangle will add up to equal 180

So we use the equation

180=2x+3x+5x

and solve for x

step 1 combine like terms

2x+3x=5x

5x+5x=10x

so now we have

180=10x

step 2 divide each side by 10

180/10=18

therefore x = 18

hope this helps and if you have any more questions feel free to ask :)

6 0
3 years ago
Read 2 more answers
Leo has two choices of cake and he needs one that will feed the most people. One of them has the height of 5 inches and a diamet
Arada [10]
The correct answer is 5 inces and a diameter of 12. Because the volume is 565 and for the other it’s 471.
5 0
3 years ago
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