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zhannawk [14.2K]

4 years ago

10

I need geometry help!!

1 answer:

Tresset [83]4 years ago

3 0

Answer: i gave you another example i just had to help you

Step-by-step explanation:

A) 8²+ 10²=x²

B) x + 8 = 10

C) x²+8²=10

D) x²+ 10²=8²

EXPLANATION:

A)

Incorrect. In this triangle, you know the hypotenuse (the side opposite the right angle) has a length of 10. The lengths of the legs are 8 and x. The correct answer is .

B) x + 8 = 10

Incorrect. The Pythagorean Theorem is a relationship between the lengths of the sides squared. The correct answer is .

C)

Correct. In this triangle, the hypotenuse has length 10, and the legs have length 8 and x. Substituting into the Pythagorean Theorem you have: ; this equation is the same as , or . What number, times itself, equals 36? That would make x = 6.

D)

Incorrect. In this triangle, the hypotenuse has length 10 (always the longest side of the triangle and the side opposite the right angle) not 8. The correct answer is

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A man pays 20% of his salary as tax and has 24,000$ left. How much did he pay as tax

puteri [66]

Answer:

He paid $6,000 in taxes.

Step-by-step explanation:

His final amount after taxes is $24000. In order to obtain this number we had to tax 20% of the total (Note that 100%-20%=80%). In other words if he was taxed 20% he took home 80% of what he was paid. Therefore mathematically we have:

$0.8A_{pre-tax}=A_{taxed}$

Since we know he was left with $24000 after taxes then:

$0.8A_{pre-tax}=24000\\\\\frac{0.8A_{pre-tax}}{0.8}=\frac{24000}{0.8}\\\\A_{pre-tax}=\frac{24000}{0.8}\\\\A_{pre-tax}=30000$

So originally he had $30,000. So how much did he pay in taxes? We can calculate the difference of both pretax and after tax and we get:

$30,000 - $24,000= $6,000 taxed

4 0

4 years ago

What is the circumference and area of this circle? (Use 3.14 for pi)

Aloiza [94]

37.7 i think it would be

3 0

3 years ago

Anna, Laura and David earn the same monthly salary,

Sonja [21]

Answer:

David saves the most (20%)

Step-by-step explanation:

The fraction Anna saves is given as 19%.

The fraction Laura saves is 1-(17/20) = 3/20 = 15/100 = 15%.

The fraction David saves is 2/(2+8) = 2/10 = 20/100 = 20%.

David saves the most of his salary each month.

8 0

3 years ago

Surface-finish defects in a small electric appliance occur at random with a mean rate of 0.3 defects per unit. find the probabil

mario62 [17]

Answer: Probability that a randomly selected unit will contain at least two surface- finish defect is 0.04.

Step-by-step explanation:

Since we have given that

Mean rate defects per unit = 0.3

Since we will use "Poisson distribution":

$P(X=K)=\frac{e^{-\lambda}\lambda^k}{k!}$

But we need to find the probability that a randomly selected unit will contain at least two surface-finish defect.

$P(X\geq 2)=1+P(X=0)+P(X=1)$

So,

$P(X=0)=\frac{e^{-0.3}0.3^0}{0!}=e^{-0.3}=0.74\\\\P(X=1)=\frac{e^{-0.3}\times 0.3}{1}=0.22$

so, it becomes,

$P(X>2)=1-(0.74+0.22)=1-0.96=0.04$

Hence, probability that a randomly selected unit will contain at least two surface- finish defect is 0.04.

4 0

4 years ago

Jacob runs 5 miles in 1 1/2 hours Robert runs 3 miles in 45 minutes who runs faster

Anastasy [175]

Answer:

hence Robert runs at a faster speed

Step-by-step explanation:

1 1/2 hours = 3/2 hours = 1.5 hours

45 min = 45/60 = 3/4 = 0.75 hours

Jacob's speed = 5 miles ÷ 1.5 hours = 3.33 miles/hr

Robert's speed = 3 miles ÷ 0.75 hours = 4 miles/hr

hence Robert runs at a faster speed

6 0

4 years ago