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enot [183]
3 years ago
5

Carlos and Maria drove a total of 191 miles in 3.8 hours. Carlos drove the first part of the trip and averaged 49 miles per hour

. Maria drove the remainder of the trip and averaged 52 miles per hour. For approximately how many hours did Maria drive? Round your answer to the nearest tenth if necessary.
Mathematics
2 answers:
Lady bird [3.3K]3 years ago
4 0
<span>Maria drove for 1.6 hours.</span>
Brrunno [24]3 years ago
4 0
The answer is 1.6 miles, hope this helps
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Two numbers differ by 3. Their product<br> is 28. Find the numbers.
Paraphin [41]

Answer:

Two solutions (-4,-7) and (4,7)

Step-by-step explanation:

x = y + 3

x*y = 28

(y+3)*y=28

y^2+3y-28=0

(y+7)(y-4)=0

y=-7, y=4

x=-4, x=7

3 0
2 years ago
What is the cube root of -729a^9b^6?<br> -9a^3b^2<br> -9a^2b^<br> -8a^3b^2<br> -8a^2b^3
timurjin [86]

Answer:

= 9a^3b^2

Step-by-step explanation:

\sqrt[3]{-729a^9b^6} =

= ((-9)^3a^9b^6)^{\frac{1}{3}

= (-9)^{3 \times \frac{1}{3}} \times a^{9 \times \frac{1}{3}} \times b^{6 \times \frac{1}{3}}

= (-9)^{1} \times a^{3} \times b^{2}

= -9a^3b^2

7 0
2 years ago
How can i solve this?
Amanda [17]

The volume of a pyramid with known base area and height is 1/3 of the volume of a box with those same dimensions. So

64=\dfrac{8\cdot4\cdot x}3\implies32x=192\implies\boxed{x=6}

7 0
3 years ago
Guests at an amusement park must be at least 54 inches tall to be able to ride the roller coaster. Which graph represents the se
Gre4nikov [31]

Given:

Guests at an amusement park must be at least 54 inches tall to be able to ride the roller coaster.

To find:

The graph that represents the set of heights that satisfy this requirement.

Solution:

Let x be the height required for the ride.

Guests must be at least 54 inches tall to be able to ride the roller coaster. It means required height is greater than or equal to 54.

x\geq 54

So, 54 and all values above 54 are in the solution set.

Since, 54 is included in the solution set, therefore there is a closed circle at 54. All values above 54 are in the solution set, so everything to the right of the circle is shaded.

Therefore, the correct option is C.

3 0
3 years ago
Read 2 more answers
Suppose Richard walks 1 kilometer every 10 minutes. How many meters further can he walk in 1 hour at this new rate?
Andrej [43]
Richard walks
1 kilometer : 10 minutes

That would mean 

6 kilometers : 60 minutes

<span>Hope that helps and correct me if I'm wrong!</span>
5 0
3 years ago
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