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stepan [7]
3 years ago
14

Which two numbers have a product of −18 and a sum of −7?

Mathematics
1 answer:
horrorfan [7]3 years ago
6 0

Answer:

2 and -9

Step-by-step explanation:

2 times -9 is -18

2 plus -9 is -7

Hope this helped!

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Store A: $25 for a 45 minute lesson Store B: $30 for a 1 hour lesson Store C: $45 for a 1.5 hour lesson Store D: $80 for three 1
Vikentia [17]

Answer: Store C by far, less money more time.


Step-by-step explanation:


6 0
3 years ago
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Three consecutive integers can be represented by the variable n, n+1 and n+2. If the sum of three consecutive integers is 57, wh
pashok25 [27]
You have some unknown integer n, and you know that adding this and the next two integers, n+1 and n+2, gives a total of 57.

This means

n+(n+1)+(n+2)=57

The task is to find all three unknown integers. Notice that if you know the value of n, then you pretty much know the value of the other three integers.

To find n, solve the equation above:

n+(n+1)+(n+2)=3n+3=57\implies 3n=54\implies n=\dfrac{54}3=18

So if 18 is the first integer, then others must be 19 and 20.
7 0
3 years ago
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A cone has a radius of 7cm and a height of 12 cm. Find the volume
Dmitrij [34]

9514 1404 393

Answer:

   196π cm^3 ≈ 615.8 cm^3

Step-by-step explanation:

Put the numbers in the volume formula and do the arithmetic.

  V = 1/3πr^2·h

  V = 1/3π(7 cm)^2(12 cm) = 196π cm^3 ≈ 615.8 cm^3

7 0
3 years ago
Answer each question and explain your reasoning.<br>How long is 75% of 60 minutes?​
uysha [10]

Answer:

45 minutes

Step-by-step explanation:

75% is the same as \frac{3}{4}. This means that we can multiply 60 by  \frac{3}{4} to find 75% of 60.

60*\frac{3}{4} \\\\\frac{180}{4} \\\\\frac{90}{2}\\\\45

5 0
3 years ago
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The graph of the equation y=2x+b passes through the point (b, -3). Find b. PLZ SHOW WORK!
Sliva [168]
Substitute in the points. It doesn't matter if they ar pe variables or not, since the variable b is used already in the equation, making it possible to find.

Substitute in the y value for the y in the equation and do the same for the x.

-3=2b+b
-3=3b
-1=b

b is -1.

Hope this helps!
Your fortune is "Stop procrastinating - starting tomorrow."
3 0
3 years ago
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