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nataly862011 [7]
3 years ago
15

Three-quarters of the students that Maria surveyed stated that they liked to sleep in on Saturday morning. If 24 of the students

said they liked to sleep in, how many students did Maria survey?
a- 15
b- 18
c- 32
d- 36
Mathematics
1 answer:
OLga [1]3 years ago
6 0

Answer:

I think it’s C

Step-by-step explanation:

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A cone with radius 4 ft and a height of 36 inches, use 3.14 as your value of pi, what is the volume?
Lelu [443]
Https://www.khanacademy.org/math/basic-geo/basic-geo-volume-surface-area/basic-geo-volumes/v/volume-....
use V=TT r2 h/3
4 0
2 years ago
Multiply. x + 4x + 2 2x2 + 3x – 4​
Yuliya22 [10]

Answer:

I think question is:

(x+4x+2)(2x^2+3x-4)

:(5x+2)(2x^2+3x-4)

5x(2x^2+3x-4)+2(2x^2+3x-4)

10x^3+15x^2-20x+4x^2+6x-8

10x^3+19x^2-14x-8

7 0
3 years ago
Find the equation of the circle with center (4,5) which passes through the y-intercept of the line 5x-2y+6=0​
Elena-2011 [213]

Answer:

(x-4)^2 + (y-5)^2 = 20

Step-by-step explanation:

Rearrange the line equation of 5x - 2y + 6 = 0

So y = 5/2x +3

The y-intercept of the line equation is 3 as when x=0, y=3.

We know the Circle has the formula (x-4)^2 + (y-5)^2 = ?^2 from the question but with the intercept, we can find the entire equation as the y-intercept is (0,3) so we can substitute it into the equation to find the full equations so:

(0-4)^2 + (3-5)^2 = ?^2

This simplifies to:

(-4)^2 +(-2)^2 = ?^2

16 + 4 = 20 = ?^2

The answer is 20 so the equation of the circle is (x-4)^2 + (y-5)^2 = 20

3 0
2 years ago
Solve this problem. Find the number of gallons of paint needed to cover all four sides four sides) of the building shown with tw
liraira [26]
The complete question in the figure attached

1) calculate the area <span>all four sides
A=[12+9+12+9]*8=336 ft</span>²

if 1 gallons---------------------------- > covers 350 ft²
X------------------------------------ > 336 ft²
X=336/350=0.96 gallons
but remember 
<span>that there are two coats of paint
</span>therefore
0.96*2----------- > 1.92------- > 2 gallons

the answer is 2 gallons

7 0
3 years ago
Read 2 more answers
The range of the function y = 2cos x is -2 ≤ y ≤ 2.
Vadim26 [7]

<u>Answer:</u>

The range of the function y = 2cos x is -2 <y < 2 .

<u>Step-by-step explanation:</u>

We know that cos (0) = 1 and cos (π) = - 1 are the two extreme values which cos x assume when x ∈ R and it is also that cos (x) is a continuous periodic function with period 2π when x ∈ R ,

since ,

cos (x + 2π) = cos x

So, the range of the  function y = 2cos x is -2 <y < 2 .

7 0
3 years ago
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