3 years ago

27382-1= What is it only friends answer

Mathematics

1 answer:

Norma-Jean [14]3 years ago

6 0

Answer:

ehhh- i give up

Step-by-step explanation:

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The formula used for calculating the time is:

t = d / v

where t is time, d is distance and v is velocity

We know that the difference in the two times is 3 hours, therefore:

d / 65 – d / 130 = 3

Calculating for d:

d = 30 / (1/65 – 1/130)

<span>d = 3900 miles</span>

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3 years ago

Working alone and at a constant rate, Machine A takes 3 hours to create a widget. Machine B, working alone and at a constant rat

PilotLPTM [1.2K]

Answer:

Time required by Machine B to create a widget = 4 hours

Step-by-step explanation:

Time taken by Machine A ( $T_{A}$ ) = 3 hours

Time taken by Machine B ( $T_{B}$ )= x hours

Time taken by both machines by working together = 12 hours

The time required to both machines by working together to finish a task is given by the formula = $\frac{T_{A} {T_{B} } }{T_{A} + T_{B} }$

Put the values in above formula we get

⇒ T = $\frac{3 x}{3 + x}$

⇒ 12 = $\frac{3 x}{3 + x}$

⇒ 36 + 12 x = 3 x

⇒ x = - 4 hours

This is the time required by Machine B to create a widget.

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3 years ago

Please help me! Given (x+a)(x+b) = x^2+x-12, what is the value of a^2+b^2

Sonja [21]

(x + 4) (x - 3)
a = 4
b = -3

a^2 + b^2 = ...
= 4^2 + (-3)^2
= 16 + 9
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3 years ago

Kelly earns a 7% commission on the total amount of her sales. This year, she had $210,000 in sales. How much commission did Kell

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210,000 x .07 = 14,700 commission

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Answer:

C= 5, -5

Step-by-step explanation:

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3 years ago