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monitta
2 years ago
14

Calculator What is the value of a?

Mathematics
2 answers:
Andrews [41]2 years ago
5 0

Answer:

15

Step-by-step explanation:

20^2 + x^2 = 25^2

= 400 + x^2 = 625

= x^2 = 225

= x = 15

Ede4ka [16]2 years ago
5 0

Answer:

15

Step-by-step explanation:

20^2 + x^2 = 25^2

= 400 + x^2 = 625

= x^2 = 225

= x = 15

You know what to do

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NeX [460]

Answer:

hmmmm.... sorry but i really dont know this  yet

Step-by-step explanation:

4 0
2 years ago
What number must you add to complete the square?
Mila [183]

Answer:

D. 49

Step-by-step explanation:

When completing the square, you take the value after x^2 which is 14 and divide it by 2 which equals 7 for which you then square that number which 7 times 7 = 49

6 0
3 years ago
A pet supplier has a stock of parakeets of which 20% are blue parakeets. A pet store orders 3 parakeets from this supplier. If t
Levart [38]

Answer:

0.384

Step-by-step explanation:

pet supplier has a stock of parakeets of which 20% are blue parakeets

20/100 = 0.2 blue parakeets (success)

1-0.2 = 0.8 not parakeets (not success)

A pet store orders 3 parakeets from this supplier

we need to find the chance of getting exactly one blue from 3 parakeets

P(x=1)=nCr (p)^r(q)^{n-r}

n=3, r=1, p = 0.2 , q=0.8

P(x=1)=3C1 (0.2)^1(0.8)^{2}

0.384

5 0
3 years ago
Find the solution to the system of equations
Neko [114]

Answer:

x=1

y=-4

Step-by-step explanation:

Since -x-3=y subsitue that in at the top equation

- x - 3 =  - 7x + 3

- x =  - 7x + 6

6x = 6

x = 1

Plug x=1 back into the equation to solve for y.

y =  - 7(1) + 3

y =  - 4

3 0
3 years ago
What is the exact volume of the cylinder?
Cloud [144]

The Answer is A. 5070π in3

3 0
3 years ago
Read 2 more answers
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