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2 years ago

I need help please I don't understand this so help please

Mathematics

1 answer:

KATRIN_1 [288]2 years ago

7 0

Answer:

8.75

Step-by-step explanation:

2*2+2.25+2.5=4+4.75=8.75

*assuming the smudged fraction is 1/4

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Explanation please will give brainliest.

Sonja [21]

Answer:

$AC = 28$

Step-by-step explanation:

Given

$AB = 16$

$BC = 12$

Required

Determine AC

Since A, B and C are collinear, then:

$AC = AB + BC$

So, we have:

$AC = 16 + 12$

$AC = 28$

5 0

3 years ago

Please help me!!!!!!! It's very important!!!!

qwelly [4]

You could just use 3.14 or 22/7

6 0

3 years ago

If f(x)= 3x + 1 and f^(-1)= x-1/3, then the ordered pair of f^(-1)(10)=

iragen [17]

The answer is B

The correct inverse of 3x+1 is actually (1/3)x - 1/3

plug in 10 to the inverse

10/3 - 1/3 = 9/3 or 3

this gives you the point (10,3)

8 0

3 years ago

Problem in image. Explain it too.

alexandr1967 [171]

$\sqrt{40} = 6.32\\\\\\or\\5\sqrt{15} \\\\$

this is because when 40 is broken down into two numbers (one divisible to get out of the square root, and one not) you get 25 + 15 under the square root. we know that the square root of 25 is 5, so we can put 5 outside the root and leave 15 inside.

-------------- try the next problem, and if you don't understand, please reply back.

answer is for a) $5\sqrt{15}$

5 0

2 years ago

Find the volume of the solid of revolution generated by revolving the region bounded by y = 2x^2, y = 0, and x = 2 about the x-a

Irina18 [472]

Answer:

$128 \pi/5 units^3$

Step-by-step explanation:

The volume of the solid revolution is expressed as;

$V = \int\limits^2_0 {\pi y^2} \, dx$

Given y = 2x²

y² = (2x²)²

y² = 4x⁴

Substitute into the formula

$V = \int\limits^2_0 {4\pi x^4} \, dx\\V =4\pi \int\limits^2_0 { x^4} \, dx\\V = 4 \pi [\frac{x^5}{5} ]\\$

Substituting the limits

$V = 4 \pi ([\frac{2^5}{5}] - [\frac{0^5}{5}])\\V = 4 \pi ([\frac{32}{5}] - 0)\\V = 128 \pi/5 units^3$

Hence the volume of the solid is $128 \pi/5 units^3$

5 0

3 years ago

I need help please I don't understand this so help please ​

I need help please I don't understand this so help please