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sammy [17]
3 years ago
9

9/v=3/30 v=__ solve the proportion.

Mathematics
1 answer:
Nadya [2.5K]3 years ago
8 0
3/30=9/v
3×3=9
30×3= 90
v=90
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Find two consecutive odd integers such that their product is 71 more than 3 times their sum.
SVETLANKA909090 [29]
Let's put this in terms of a system of equations. Let's call the numbers x and y, with x being the larger integer and y the smaller one. Since they are consecutive odd integers, we know that:
x = y + 2
The constraint is:
xy= 3(x+y) + 71         Simplify
xy = 3x + 3y + 71       Plug in (y+2) for x:
(y + 2) y = 3(y + 2) + 3y + 71         Simplify
y² + 2y = 3y + 6 + 3y + 71              Subtract 6y from  both sides, add 71+6
y² -4y = 77
y² - 4y - 77 = 0
Factor:
(y - 11) (y+7) = 0
y = 11 or y=-7

When y = 11, x = 13, since x = y+2
Plug in to make sure:
xy = 3(x+y) + 71
11*13 = 3 (11 + 13) + 71
143 = 3 (24) + 71
143 = 72 + 71
143 = 143               
Our values work! 
Answer: 11, 13
4 0
3 years ago
the space station has an average orbit of 250 miles above the earth. how many pennies would it take to make a stack that high? p
KatRina [158]

250 miles is 1 320 000 feet.

A penny is 0.005 feet tall.

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7 0
2 years ago
PLEASE HELP 50 COINS!!!!
tankabanditka [31]

Answer:

Therefore,

AB=16.25\ units

The Measurement of AB is 16.25 units.

Step-by-step explanation:

In Right Angle Triangle ABC

m∠C=90°

AC = 10.01    .....(Adjacent Side to angle A)

m∠A=52°

cos 52 ≈ 0.616

To Find:

AB = ? (Hypotenuse)

Solution:

In Right Angle Triangle ABC, Cosine Identity,

\cos A= \dfrac{\textrm{side adjacent to angle A}}{Hypotenuse}\\

Substituting the values we get

\cos 52= \dfrac{AC}{AB}=\dfrac{10.01}{AB}

But cos 52 ≈ 0.616 ....Given

AB=\dfrac{10.01}{0.616}=16.25\ units

Therefore,

AB=16.25\ units

The Measurement of AB is 16.25 units.

5 0
3 years ago
I needdddd helpppppp
DedPeter [7]

Answer:

P=a+b+c

Step-by-step explanation:

a=side

b=base

c=side

in your case do this for each two lines on every angle and use base for the shape inside hope this helps

3 0
3 years ago
Which of the following is NOT TRUE in determining if two graphs are inverses of each other?
Nonamiya [84]

Answer:

B

Step-by-step explanation:

The first choice is true.

The second is not true.

Third is true.

I think the last is true  (not sure)

8 0
3 years ago
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