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4 years ago

6

What is x5/3x + 1/3x=10+7/3x

1 answer:

Pie4 years ago

7 0

Answer:

x=6/25 or decimal = x=-0.24

Step-by-step explanation:

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Two friends left school at the same time and drove in opposite directions. One friend averages 40 miles per hour and the other f

EastWind [94]

The two friends will be 150 miles apart, when the sum of the distances covered by the them is 150 miles.

distance = speed x time.
Let the time covered when they are 150 miles apart be x, then:
40x + 35x = 150
75x = 150
x = 150/75 = 2.

Therefore, the two friends will be 150 miles apart in 2 hours.

3 0

4 years ago

What is j divided by 9 is 5

kobusy [5.1K]

J/9=5
Multiply both sides by 9
Which gets you
j = 45

8 0

4 years ago

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From a group of 6 candidates, a committee of 2 people is selected. In how many different ways can the committee be selected? I k

kolezko [41]

This is a combination problem.

6 nCr 2

$\frac{6!}{2! * (6-2)!} = \frac{720}{48}=15$ <span><span>

</span></span>

7 0

3 years ago

Read 2 more answers

What is the surface area of this composite solid?______________ square feet 242 319 363 517

jeka57 [31]

Answer:

<h2>The right answer is 415.4 cubic feet.</h2>

Step-by-step explanation:

As you can observe in the image attached, the composite figure is formed by a square prism and a pyramid on top.

We need to find the volum of each part separately.

<h3> Square prism.</h3>

$V_{prims}=11 \times 11 \times 2=242 \ ft^{3}$

<h3>Square pyramid.</h3>

First, we need to find the height of the pyramid. We already know the height of each triangular face of the pyramid, which divides equally the side.

Let's use Pythagorean's Theorem to find the height of the pyramid.

$7^{2}=h^{2} +(5.5)^{2}\\ 49-30.25=h^{2}\\ h=\sqrt{18.75} \approx 4.3$

The height is 4.3 feet, approximately.

Now, we find the volume of the pyramid

$V_{pyramid}=\frac{1}{3}(11 \times 11 \times 4.3) \approx 173.4ft^{3}$

The sum of both figures represents the total volume of the composite figure

$V_{total}=242+173.4=415.4ft^{3}$

Therefore, the right answer is 415.4 cubic feet.

3 0

3 years ago

Read 2 more answers

Find the inverse for each relation {(-5,1),(-5,-1)(-5,8)}

kobusy [5.1K]

Answer:

(-5,7) (-5,8) (-5,3)

Step-by-step explanation:

Dont know if this will help but here you go

3 0

3 years ago