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2 years ago

K(x)=-3x^2-3;find k(-2)

Mathematics

1 answer:

Agata [3.3K]2 years ago

6 0

Answer:

Step-by-step explanation:

because I leaned it at school

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celine mixes raisins and peanuts to make a snack. she uses 0.75 cup raisins for every 0.5 cup peanuts. write a proportion and us

PtichkaEL [24]

Answer:

6.375 cups of raisins

Step-by-step explanation:

The ratio of raisins to peanuts is 3:2. This is because 0.5 divided by 2 and then multiplied by 3 is equal to 0.75.

So to find the number of raisins we need to divide the number of peanuts by 2 and then multiply it by 3:

(4.25 ÷ 2) × 3 = 6.375

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3 years ago

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Sally has three times as many dimes as nickels and twice as many quarters as dimes. In all she has $5.55.How many of each type o

OLEGan [10]

Sally has 3 nickels, 9 dimes, and 18 quarters

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4 years ago

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Evaluate the expression when c=3 and y=-4. 8c-y

Savatey [412]

Answer:

Step-by-step explanation:

8c - y

8( 3) - (- 4)

24 + 4

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3 years ago

15. The height and yolume of a cylinder are 4cm and 616cm respectively. Calculate the diameter of the base. (take t = 27 쪽 A. 7c

irakobra [83]

Step-by-step explanation:

Given that,

Height of cylinder = 4 cm
Volume of cylinder = 616 cm³

To find,

Diameter of the base = ?

Firstly we'll find the base radius of the cylinder.

$\longmapsto\rm{V_{(Cylinder)} = \pi r^2h}\\$

According to the question,

$\longmapsto\rm{616= \dfrac{22}{7} \times r^2 \times 4}\\$

$\longmapsto\rm{616 \times 7 = 22 \times r^2 \times 4}\\$

$\longmapsto\rm{4312 = 88 \times r^2 }\\$

$\longmapsto\rm{\cancel{\dfrac{4312}{88}} = r^2 }\\$

$\longmapsto\rm{49 = r^2 }\\$

$\longmapsto\rm{\sqrt{49} = r }\\$

$\longmapsto\rm{7 \; cm = r }\\$

Now,

$\longmapsto\rm{Diameter = 2r }\\$

$\longmapsto\rm{Diameter = 2(7 \; cm) }\\$

$\longmapsto\bf{Diameter = 14 \; cm}\\$

The required answer is 14 cm.

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3 years ago

Cameron surveys every tenth student who walks into school to determine the favorite type of movie of students in his school. wha

Katarina [22]

So every 1 out of 10 students is checked also is there anymore to this question?

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3 years ago