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3 years ago

For what value of x is the rational expression below when x is equal to 4? X+20/x+4

Mathematics

1 answer:

arlik [135]3 years ago

7 0

x+20/x+4

↓

4+20/4+4

↓

4+5+4=13

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Please help I need the answer ASAP!!!!!

zloy xaker [14]

h(t) = 80t - 16t²

Ground level is h(0) = 0

We want to solve for t:

h(t)= 0

80t - 16t² = 0

16t(5 - t) = 0

t = 0 or t = 5

Answer: 5 seconds

3 0

3 years ago

Read 2 more answers

(23+?) +19=23+(?+19 can any number complete the number sentence?

7nadin3 [17]

Yes, since the other two numbers on each side are the same, any number can fit well in this equation.

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2 years ago

The "sum" of two numbers is: A the result when both numbers are added together B the result when the first number is subtracted

Irina-Kira [14]

Answer:

A the result when both numbers are added together

5 0

2 years ago

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Given the arc length of a circle is 127π centimeters and the subtended angle is 60˚. Find the Circumference of the circle.

Mumz [18]

The circumference of the circle is 762π cm.

<h3>What is length of arc of a circle?</h3>

The length of arc a circle can is determined with the radius and central angle of the arc.

The radius of the circle is calculated as follows;

$L = \pi r \times \frac{ \theta }{180} \\\\
\pi r \theta = 180 L\\\\
\pi r = \frac{180 L}{\theta}$

The circumference of the circle is calculated as follows;

$C = 2\pi r\\\\
C = 2(\pi r)\\\\
C = 2(\frac{180 \ L}{\theta } )\\\\
C = 2(\frac{180 \times 127\pi}{60 } )\\\\
C = 762 \pi \ cm$

Learn more about circumference of a circle here: brainly.com/question/9782777

4 0

2 years ago

The airplane in the scale drawing has a wingspan of a feet and a tail span of b feet. If the tailspin in the drawing is 2 inches

xeze [42]

Correct answer is: actual wingspan of airplane is 6 inches.

Solution:-

We are given that wingspan is 'a' feet and tail span is 'b' feet in a scale drawing.

And we are also given that tail span is 2 inches that is b=2 inches and $\frac{a}{b}=3$

Let us plugin the b value in above equation.

$\frac{a}{2}=3$

Multiplying with 2 on both sides.

a=3X2=6 inches.

Hence actual wingspan of airplane is 6 inches.

7 0

3 years ago