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My name is Ann [436]
3 years ago
7

the sum of three numbers is 131. The second of three numbers is seven more than twice the first. The third number is 12 less tha

n first . What equation can be used to solve the problem
Mathematics
1 answer:
spin [16.1K]3 years ago
3 0
No. 1 = x
No. 2 = 2x+7
No. 3 = x-12

Answer:

x+(2x+7)+(x-12) = 131

From there you solve to get the numbers:

34, 75 and 22
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Find f(-4) <br> if f(x) = {(2,-4), (4,0), (5,-4), (-4, 0)}
Troyanec [42]

Answer:

If f(x) = 2x2 - 4x + 3 evaluate for f(3) and f(-4) 2. g(x) = V - 2x; find g(-27) and g(-1) ... {(-3,0), (+3, 3),(-3,2)} ... If f(x) = 5x+5, find and simplify f(4).

8 0
3 years ago
$100 for 10 hours Rick $80 for 9 hours Steve $75 for 8 hours Andy $60 for 5 hours Meg wants to take tennis lessons. In the chart
Sergio [31]

Answer:

$80 for 9 hours

Step-by-step explanation:

whichever instructor it is that does it for $80 for 9 hours.

I can't tell which rates belong to which instructor and Mark's name isn't listed by any rates......

but the $80 for 9 hours is the best deal per hour

5 0
3 years ago
Application: a rhombus as an area of 72 ft and the product of the diagonals is 144. What is the length of each diagonal?
Svetach [21]
<span>the formula that I used would be
p = a √( 2 - 2 cos(A) ) = a √( 2 + 2 cos(B) )q = a √( 2 + 2 cos(A) ) = a √( 2 - 2 cos(B) )<span>p2 + q2 = 4a2 

this would give us these measurements for the diagonals
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q=15</span></span>
7 0
4 years ago
Need help on 39 please
julsineya [31]
That is actually easier thatn it looks

here is  a tip
write that thing apart since they are all multiplication like this:
V=(1/3)pir^2  h
now just divide the whole equaiton by ((1/3)pir^2)
or if you don't like dividiing by fracitons, times both sides by 3/1 to clear fraction to get
3V=pir^2h
divide both sides by pir^2
(3v)/(pir^2)=h
8 0
3 years ago
A youth group sells cookles for $8 a boxIf they spent 1000 buying the cookies, which equation below shows the profit () made by
Sonbull [250]

Answer:

D)        P = 8b - 1000

Step-by-step explanation:

Think about it,

First off

    If they spent 1000 from just buying the cookies. When you buy something you lose money. So that's -1000.

Secondly,

     If they charged $8 per box that would cost an additional eight dollars each time a cutomer perchased a box. Another way to show addition is multiplication.

Ex if someone bought 7 box and 8 dollars each it could be shown as either:

1. 7 + 7 + 7 + 7 + 7 + 7 + 7 + 7

2. 8 + 8 + 8 + 8 + 8 + 8 + 8

3.  7 x 8  or 8 x7                                                                                                                      

So 8b - 1000 would make the most sense.

5 0
3 years ago
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