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3 years ago

A scuba diver took six minutes to rise to the surface at a rate of 20 feet per minute, how far was he below sea level?

Mathematics

1 answer:

umka21 [38]3 years ago

8 0

Answer: 180ft

Step-by-step explanation: distance = speed * time 30ft/min * 6min = 180 ft

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If 15 mi = 8 km, about how many miles would be equal to 50 km?

Anon25 [30]

Use ratios to solve

15 m/8 km = x m/50 km Cross multiply
15(50) = 8x
750 = 8x divide by 8 on both sides
93.75 = x

93.75 miles = 50km

6 0

3 years ago

Evaluate \dfrac{e}{4}+2f-3

Igoryamba

Answer:

The value of given expression is 1.

Step-by-step explanation:

Consider the given expression is

$\dfrac{e}{4}+2f-3$

When e=12 and $f=\dfrac{1}{2}$ .

Substitute e=12 and $f=\dfrac{1}{2}$ in the given expression.

$\dfrac{12}{4}+2(\dfrac{1}{2})-3$

On simplification we get

$3+1-3$

$1$

Therefore, the value of given expression is 1.

8 0

3 years ago

Can anyone help me with this?

mart [117]

Answer:

Step-by-step explanation:

$\left\{\begin{array}{ccc}y=3x+2&(1)\\y=5x&(2)\end{array}\right\\\\\text{substitute (2) to (1):}\\\\5x=3x+2\qquad\text{subtract 3x from both sides}\\2x=2\qquad\text{divide both sides by 2}\\x=1\\\\\text{Put the value of x to (2):}\\\\y=5(1)=5$

7 0

3 years ago

Selena has been hired as a sales associate at Better Rooms furniture store. She has two salary options. She can choose to receiv

irakobra [83]

Answer:

Step-by-step explanation:

7500 * 6% = 450 which would just barely be enough to get paid the same amount as the fixed salary.

hopefully this helps

3 0

3 years ago

I need help with this

Kaylis [27]

Answer:

D) 312

Step-by-step explanation:

2(6*8)=96

6*9=54

9*10=90

8*9=72

96+54+90+71=312

7 0

3 years ago

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