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Romashka-Z-Leto [24]
2 years ago
7

What number must i add to complete the square x^2+8x=-3

Mathematics
1 answer:
Sonja [21]2 years ago
7 0

Answer:

16

Step-by-step explanation:

(b/2)^2

(8/2)^2 = (4)^2 = 16

(x^2+8x+16) = -3+16

(x+4)^2 = 13

so on so forth, but basically you add 16 which completes the square

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Nia family bought 2 lb chesse and 1/4 pound was left . How much was eaten
Kazeer [188]
2 = 8 / 4

8 / 4 - 1 / 4 = 7 / 4

They ate 7/4 lbs, or 1.75 lbs.
6 0
3 years ago
In AABC, a = 8, b = 5, and c = 9. What is the value of<br> angle B.
FromTheMoon [43]
Can you show the problem ?
8 0
3 years ago
-6x + 3x = -21 linear equations
snow_tiger [21]

well combine like terms

-3x = -21

divide both sides by -3

x = 7

8 0
3 years ago
Read 2 more answers
Mrs.smith earns $3500 a month. She saves $280 a month. Savings is what percent of her income?
arlik [135]

Answer:

3500 280

Step-by-step explanation:

280/3500

280 divided by 3500 times 100 (type this into a calculator)

its 8 her savings are 8 percent of her income

4 0
3 years ago
Find how many quarts of 6% butterfat milk and 1% butterfat milk should be mixed to yield 75 quarts of 3% butterfat milk.
IgorC [24]

Answer:

30 gallons of 6% milk, and 45 gallons of 1% milk.

Step-by-step explanation:

x=quarts of 6% butterfat

<h2>First, write an equation.</h2>

0.06x+0.01(75-x)=0.03*75

<h2>Multiply both sides by 100.</h2>

0.06x*100+0.01*100(75-x)=100*0.03*75

<h2>Simplify</h2>

6x+75-x=3*75

6x+75-x=225

<h2>Solve</h2>

5x=225-75=150

5x=150

x=30

75-30=45

So, we need 30 gallons of 6% milk, and 45 gallons of 1% milk.

8 0
3 years ago
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