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Lelu [443]
3 years ago
10

2. Josh and his brother will drive from Boston

Mathematics
1 answer:
Alenkasestr [34]3 years ago
4 0

Answer: 4.4 hours

Step-by-step explanation:

Distance = 220 miles

Speed = 50.5 miles/hour

speed = distance / time

Therefore :

time = distance / speed

time = 220/50.5

time = 4.356435644

To the nearest tenth , time = 4.4 hours

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If g(x) = -4x + 5, find g(-3x).
nignag [31]
Answer: 12x + 5

Explanation:

g(x) corresponds to x, so you plug -3x into x. That equals -4(-3x) + 5. Multiply to get 12x + 5. Because you can’t add a number with a variable to a whole number, that’s your answer. Hope this helps!
4 0
4 years ago
13. The radius of Earth is approximately 6.4 x 100 m. Use the formula V = 4/3pr^3
romanna [79]

<u>We are given</u>

  • Radius of Earth; 6.4 x 100 meters = 640 meters

Clearly, the shape of the earth is a sphere. Thus, to determine the volume of the earth, we will use a formula that determines the volume of a sphere.

\implies \text{Volume of sphere =} \   \dfrac{4\pi r^{3}}{3}

When we substitute the radius in the formula, we get;

\implies\text{Volume of sphere} = \dfrac{4\pi (640)^{3}}{3}

\implies\text{Volume of sphere} = \dfrac{4\pi (640)(640)(640)}{3}

Take π as 3.14

\implies\text{Volume of sphere} = \dfrac{4\pi (640)(640)(640)}{3}

\implies \text{Volume of sphere} = \dfrac{4(3.14)(640)(640)(640)}{3}

Simplify the numerator;

\implies \text{Volume of sphere} = \dfrac{4(3.14)(640)(640)(640)}{3}

\implies \text{Volume of sphere} = \dfrac{3292528640}{3}

Divide the numerator by 3;

\implies \text{Volume of sphere} = \dfrac{3292528640}{3}

\implies \text{Volume of sphere} = \boxed{1097509546.67 \ \text{m}^{3} } \ \ \ (\text{Estimated})

4 0
2 years ago
The function f(x) is given by the set of ordered pairs.
JulsSmile [24]

Step-by-step explanation:

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8 0
3 years ago
What is the value of z?<br><br><br><br> 53=−19z+5+7z
UkoKoshka [18]

Answer:

-4

Step-by-step explanation:

53 = -19z+5+7z

53 = -12z+5 | -5 (on both sides)

48 = -12z | :(-12)

z = -4

3 0
4 years ago
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igomit [66]

Answer:

\frac{8x^{18} }{y^{2} }

Step-by-step explanation:

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3 years ago
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