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3 years ago

You can drive 300 miles in 5 hours. At this rate, how long will it take you to drive 150 miles?

Mathematics

1 answer:

Katena32 [7]3 years ago

7 0

Answer:

2.5 hours

Step-by-step explanation:

The ratio - 300: 5 is the same as 60:1

150:x should equal 60:1

You divide 150 by 60 to get your answer

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Which expression gives the distance between the points (2,5) and (-4,8)?

inessss [21]

Square root of (5-9)^2+(1+6)^2

6 0

3 years ago

Trinh wants to save 1,250 total after 15 months to put towards a vacation

zlopas [31]

Answer:

good for them

Step-by-step explanation:

i need more of the problem though

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3 years ago

For what value of x is sq 896z^15/225z^6 = xz^4/15

Ratling [72]

Answer:

Value of x is, 8

Step-by-step explanation:

Given: $\sqrt{\frac{896z^{15}}{225z^6}} =\frac{xz^4}{15} \sqrt{14z}$ ,.....[1]

To find the value of x:

Using exponent rules:

$(a^n)^m = a^{nm}$

$a^n \cdot a^m = a^{n+m}$

Taking square both sides in [1] we have;

$\frac{896z^{15}}{225z^6} = (\frac{xz^4}{15})^2 \cdot (14z)$

Simplify:

$\frac{896z^{15}}{225z^6} =\frac{x^2z^8}{225} \cdot (14z)$

$\frac{896z^{15}}{225z^6} =\frac{14x^2z^9}{225}$

Multiply both sides by $\frac{225}{14z^9}$ we get;

$x^2 = \frac{896 z^{15}}{225z^6} \times \frac{225}{14 z^9} = \frac{896 z^{15}}{14 z^{9+6}}$

Simplify:

$x^2 = \frac{896 z^{15}}{14 z^{15}} = 64$

$x = \sqrt{64}$

Simplify:

x = 8

Therefore, the value of x is, 8

5 0

3 years ago

In the polynomial below, what number should replace the question mark to

galben [10]

Answer:

C: 6

Step-by-step explanation:

Let's work backward. If that ? is replaced by 6, we have:

x^2 + 12x + 36 = (x + 6)^2.

The coefficient in question is 6.

6 0

3 years ago

Please help it’s due today at 6:10am please help me please please need help please

zepelin [54]

Answer:

Step-by-step explanation:

a. 3-4x=-7-4x

3=-7. no solution

b. 15 - 2x = -7x

15 = -5x

x=-3. one solution

c. 7y-21=6y-21

y=0

1. -3x+4=-3x+7

4=7

2. 10+2x = 5x+2

8=3x

x=3/8

3. x+5=x+5

8 0

3 years ago

Read 2 more answers