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Aliun [14]
3 years ago
15

NEED HELP!! Which is a valid proportion?

Mathematics
1 answer:
aleksley [76]3 years ago
6 0
Answwer is DDdDdDdDdDdD
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Height of the Volleyball Serve
sveta [45]

Answer:  B)  The ball is 18 feet in the air after 1 second.

Step-by-step explanation:

Find the point on the graph where it hits the 1 second mark and find the value of y, 18 feet.

8 0
3 years ago
The sum of a number and its reciprocal is 41/20. Find the number. smaller value larger value
Natali [406]

Step-by-step explanation:

Let the number is x. Its reciprocal will be 1/x. According to given condition, we get :

x+\dfrac{1}{x}=\dfrac{41}{20}\\\\\dfrac{x^2+1}{x}=\dfrac{41}{20}\\\\20x^2+20=41x\\\\20x^2-41x+20=0

It is a quadratic equation. The values of x are :

20x^2-25x - 16x+ 20 =0\\\\5x(4x - 5) -4( 4x - 5) = 0\\\\(5x-4)(4x-5)=0\\\\5x-4=0\ \text{and}\ (4x-5)=0\\\\x=\dfrac{4}{5}\ \text{and}\ x=\dfrac{5}{4}

The smaller number is 4/5 and the larger number is 5/4.

6 0
3 years ago
Without graphing, write the equation of the axis of symmetry for<br> f(x) = 4|x + 8] - 5.
iren [92.7K]

Answer:

The line of symmetry is x=8

Step-by-step explanation:

7 0
2 years ago
Find the value of x.<br>need the answer today please.<br>Thank you.​
charle [14.2K]

Answer:

x =8.34654305

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

cos theta = adjacent / hypotenuse

cos 33 = 7/x

Switching places with the x and the 33

x = 7/ cos 33

x =8.34654305

3 0
2 years ago
Read 2 more answers
Please help with this problem picture will be posted A.S.A.P.
balu736 [363]
I would say B but I can't see the question very well.
7 0
3 years ago
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