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Dima020 [189]
3 years ago
10

Use the distributive property to expand the expression. −(3a3 − 4b2) (12x − 9y − 5)

Mathematics
1 answer:
aalyn [17]3 years ago
6 0
The answer to that is -3a+4b+12x-9y-4
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I GIVEEEEE BRAINLILST
Pavel [41]

Answer:

73.5

Step-by-step explanation:

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8 0
2 years ago
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a cone has a height of 4 ft and a volume of 7.77 Ft cubed determine its radius to the nearest tenth of a foot​
Nana76 [90]

Answer:

The radius of the cone is approximately 1.4 feet

Step-by-step explanation:

The given parameters of the cone are;

The height of the cone, h = 4 ft.

The volume of the cone, V = 7.77 ft.³

The volume, 'V', of a cone is given by the following formula;

V = 1/3 × π·r²·h

Where;

V = The volume of the cone = 7.77 ft.³

r = The radius of the cone

h = The height of the cone = 4 ft.

By substituting the vales of 'h' and 'V' in the above equation, we have;

7.77 ft.³ = 1/3 × π × r² × 4 ft.

∴ r = √(3 × 7.77 ft.³/(π × 4 ft.)) = 1.36196580784 ft.

∴ The radius of the cone, r ≈ 1.4 ft. (rounding the answer to the nearest 10th)

4 0
3 years ago
Find the following measure for this figure.
ss7ja [257]

Answer: last option (5π√146 units²)

Step-by-step explanation:

To solve the exercise you must apply the formula for calculate the lateral area of a cone, which is shown below:

 LA=r*L*\pi

where r is the radius but L is the slant height.

As you can see in the figure attached:

r=5

But you need to find the slant height with the Pythagorean Theorem (L would be the hypotenuse):

L=\sqrt{11^2+5^2}=\sqrt{146}

Substitute into the formula, then:

 LA=(5)(\sqrt{146})\pi=5\pi\ \sqrt{146units²

4 0
3 years ago
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Please answer ASAP i need help please explain.
Phoenix [80]

Answer:

no

Step-by-step explanation:

3/4-2/3=9/12-8/12=1/12

4 0
3 years ago
Plzz help
ratelena [41]

Answer:

<h2>8:12</h2>

Step-by-step explanation:

Ok so the starting ratio is 4:6

It is 20 members  last year and 25 member the next year.

LAST: 20 THIS YEAR:25

When u use the ratio of 4:6 IN 25 students, u get

8:12 LAST year.  

You can check because 8 + 12 = 20, or the total number of students.

5 0
3 years ago
Read 2 more answers
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