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scoundrel [369]

3 years ago

15

the sum of three numbers is 63. The first number is twice the second number, and the third number is three times the first numbe

r. Set these numbers

1 answer:

HACTEHA [7]3 years ago

3 0

Answer:

Step-by-step explanation:

2x+x+3(2x)=63

3x+6x=63

9x=63

9x/9=63/9

X=7

2x=14

3(2x)=42

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X^2+y^2-4y-15=6

myrzilka [38]

Answer:

x^2 + y^2 - 4y - 15 = 6

x^2 + y^2 - 4y = 21

x^2 + y^2 - 4y + 4 = 25

x^2 + (y - 2)^2 = 5^2

r = 5

8 0

2 years ago

How to solve for 6x-12+2x=3+8x-15

Alecsey [184]

6x−12+2x=3+8x−15

Simplify:

6x+−12+2x=3+8x+−15

(6x+2x)+(−12)=(8x)+(3+−15)(Combine Like Terms)

8x+−12=8x+−12

8x−12=8x−12

Subtract 8x from both sides.

8x−12−8x=8x−12−8x

−12=−12

Add 12 to both sides.

−12+12=−12+12

0=0

The real numbers are the only solution we can have.

4 0

3 years ago

A retail store offers all television sets at 80%, or , of their original price if the customer buys a store membership for $100.

Natasha_Volkova [10]

Let X = be the amount the amount that new customer will have to pay X = 0.8P + 100 Given that the television is $1500, the discounted price is $1200. But the customer will have to pay the membership of $100. Therefore the total amount is $1300.

8 0

3 years ago

Read 2 more answers

Find the area of the shape shown below. i need help nowww!!!

vladimir2022 [97]

Lentgh * width = area so, 3.5*9 right?

4 0

3 years ago

john made two candles in the shape of rectangular prisms. The first candle is 12cm high, 4 cm long, and 6 cm wide. The second ca

anzhelika [568]

Answer:

96 $cm^3$

Step-by-step explanation:

To determine how much additional wax was needed to make the taller candle, we determine the volume of each of the candles and find the difference in their volumes

<u>First Candle</u>

Height=12cm
Length=4 cm
Width= 6 cm

Volume=Height X Length X Width

=12 X 4 X 6

=288 $cm^3$

<u>Second Candle</u>

The second candle is 4cm higher

Height=12+4=16cm
Length=4 cm
Width= 6 cm

Volume=Height X Length X Width

=16 X 4 X 6

=384 $cm^3$

Difference in Volume = 384-288 =96 $cm^3$

Therefore, 96 $cm^3$ of additional wax was used to make the second candle.

6 0

3 years ago