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3 years ago

I really need help with pls help

Mathematics

1 answer:

hjlf3 years ago

7 0

Answer:

1. A

2. B

3. D

The square root of 28 is equivalent to 2 x the square root of 7

the square root of 252 is equivalent to 6 x the square root of 7

the square root of 36 is 6

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What's the sum of 6+y

Elis [28]

Answer:

6y?

It's probably wrong but off the top of my head, 6y

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3 years ago

5 times what gives you 130

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5 time 26 gives you 130

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3 years ago

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A 4m ladder rest against a vertical wall with its foot 2m from the wall.How far up the wall does the ladder reach?

adell [148]

A) How high up the wall does it reach?

Use the Pythagorean theorem

Height^2 + Base^2 = Hyp^2

H^2+ 2^2 = 4^2 Subtract the 2^2 from both sides

H^2 = 4^2 -2^2 Multiply the square roots of both the numbers

H^2= 16 - 4

H^2 = 12

H= sqrt(12) m

Hope this helps

4 0

3 years ago

Help mehhhh plz ASAP

DanielleElmas [232]

Answer:75

Step-by-step explanation:2 1/2 is equal to 5 halves. If each half is equal to 15 then all you do is multiply 15 by 5

8 0

3 years ago

Where v is the final velocity (in m/s), u is the initial velocity (in m/s), a is the acceleration (in m/s²) and s is the distanc

Anna11 [10]

Answer:

The final velocity v is 21.74 m/s.

Step-by-step explanation:

Given:

$\textrm{initial velocity} = u = 9\ m/s\\\textrm{acceleration} = a = 7\ m/s^{2}\\\textrm{distance} = s = 28\ m$

To find:

$\textrm{final velocity} = v = ?$

Solution:

As we know the third equation of motion is represented as

$v^{2} = u^{2} + 2\times a\times s\\$

Substituting the values u, a and s in the above equation we get

$v^{2} = 9^{2} + 2\times 7\times 28\\ =81 + 392\\=473\\$

$v =\±\sqrt{473} \\v =\sqrt{473} \ \textrm{as acceleration is positive v is also positive}\\v = 21.74\ m/s$

7 0

3 years ago