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lidiya [134]
3 years ago
6

Which value must be added to the expression x2 + 12x to make it a perfect-square trinomial?

Mathematics
2 answers:
stellarik [79]3 years ago
8 0

Answer:

D) 81

Step-by-step explanation:

Alexxx [7]3 years ago
7 0

Answer:36

When you factor X^2+12x+36 you get a perfect square trinomial which is (x+6)^2

Hope this helps!

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At a ceramic shop, each cup is $6.30 cheaper than each plate. If you totally spent $28.50 for 5 cups and 3 plates, what is the p
Alex Ar [27]
Let
x-------------> <span>the price of each cup
</span>y-------------> the price of each plate

we know that

5x+3y=28.50----------> equation 1
and
x=y-6.30--------------> equation 2

I substitute 2 in 1
5*(y-6.30)+3y=28.50---------> 5y-31.5+3y=28.5-----> 8y=60
y=7.5
x=y-6.3---------> x=7.5-6.3---------> x=1.2

the answer is
the price of each cup is $1.2
 the price of each plate is $7.5


8 0
3 years ago
Lincoln is saving $360 to buy a new bike. He already has $85 and can earn $12 per hour at work. Which of the following equations
Vedmedyk [2.9K]

Answer:

85 + 12w =360

Step-by-step explanation:

7 0
3 years ago
Kevin went to see his favorite sports team play his car can go 320 miles on one lank of gas. If he used 20% of a full tank of ga
Oxana [17]

Answer:

64 miles

Step-by-step explanation:

If he used 20% of the gas, he can go 20% of the miles

20% of 320 miles

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64 miles

7 0
3 years ago
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Which defines a circle?
Mila [183]

Answer:

a round plane figure whose boundary (the circumference) consists of points equidistant from a fixed point (the center).

Step-by-step explana

3 0
3 years ago
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An auto dealership sells minivans and sedans. In January, they sold 10 minivans and 20 sedans. In February, they sold 7 minivans
zaharov [31]

Answer:

january = 10/20 = 1/2

februry = 7/14 = 1/2

so, we conclude that the auto dealership didn't have a lower ratio, since the ratio is equal in both months.

<em>hope it helps :)</em>

<em />

8 0
3 years ago
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