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Oksi-84 [34.3K]
3 years ago
10

Which statement describes the first step to solve the equation by completing the square?

Mathematics
1 answer:
denis-greek [22]3 years ago
8 0
<span>Ans: Multiply both sides of the equation by 1/3 .

3x^2 + 18x = 21
</span>Multiply both sides of the equation by 1/3 . [because coefficient of x^2 must be 1]
x^2 + 6x = 7

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Enter the number that belongs in the green box (please enter both numbers for the empty boxes)
VLD [36.1K]

Given:

The equation is:

5x-2=4+2x

To find:

The number that belongs in the green box and another box.

Solution:

We have,

5x-2=4+2x

Subtracting 2x from both sides, we get

5x-2-2x=4+2x-2x

3x-2=4

Adding 2 on both sides, we get

3x-2+2=4+2

3x=6

We need to divide both sides by 3 to isolate the variable x.

On dividing both side by 3, we get

\dfrac{3x}{3}=\dfrac{6}{3}

Therefore, the missing values are 3 and 3, and the required equation is \dfrac{3x}{3}=\dfrac{6}{3}.

3 0
3 years ago
Help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
VladimirAG [237]

Answer:

your answer will be <u>9v+14</u>

Step-by-step explanation:

have a nice day!!!

7 0
3 years ago
I need to help to ring the area of the base plz help me
Nataly [62]

Answer: 6

Step-by-step explanation:

the area of the base is the triangle base

the area of a triangle is bh/2

that looks like a perpendicular sign in the top left so b = 3 and h = 4

so area = 3*4/2 = 6

8 0
3 years ago
Read 2 more answers
Question 9
timurjin [86]

Answer:

<u>The</u><u> </u><u>requ</u><u>ired</u><u> </u><u>num</u><u>ber</u><u> is</u><u> </u><u>7</u><u>0</u><u>.</u>

Step-by-step explanation:

let the no. be 10y + x where x is unit digit and y is ten's digit.

given , sum of the digit is 7

x + y = 7 ...(1)

also , reversing the no. we get 10x + y ,where x is ten's digit and y is unit digit.

given reversed digit decreases the number by 63 .

so, 10y + x - ( 10x + y ) = 63

9y -9x = 63

( dividing both side by 9 )

y - x = 7 ....(2)

adding 1 and 2 [ refer attachment ]

so the required original number is

10y + x = 10×7+0 = 70

8 0
2 years ago
Which expression can be used to find the volume of the cylinder in this composite figure? (Remember: The formula to find the vol
bija089 [108]

Answer: pi (4) squared (12)

Step-by-step explanation: Because like you said pi r squared h

3 0
4 years ago
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