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Zigmanuir [339]
3 years ago
7

Please help, will give brainliest! Which is NOT equivalent to this expression? 4(3x^2+6x)

Mathematics
1 answer:
Iteru [2.4K]3 years ago
3 0
12x^2+6x is not equivalent
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A pharmacist has 18% bleach solution. How much of this solution and how much water must be mixed together to make 10 liters of a
kkurt [141]
X = the amount of water to add
10 - x = amount of 18% bleach to add

.18(10-x)= .12 x 10
1.8 -.18x =1.2
-.18x = -.6
x = 3 1/3 liters water
therefore 6 2/3 liters bleach

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3 years ago
Evaluate p/2 -5 if p equals 14
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I have 5 quarters and 7 pennies. What fraction of the coins are pennies?
Alex787 [66]

Answer:7/12

Step-by-step explanation:there are 12 coins in total and 7 of them are pennies

3 0
3 years ago
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The price of 600 grams of candy and 1.5 kg of cookies was 4 dollars and 62 cents. What is the price of one kg of cookies if it i
cupoosta [38]

Answer:

The price of the kilogram of cookies is $ 1.8

Step-by-step explanation:

Call x the price of the kilogram of candy and call y the price of kilogram of cookies

Then we know that

0.600x + 1.5y = 4.62

We also know that the price of kilogram of cookies is 1.40 dollars cheaper than the kilogram of candy

So

y = x-1.40

We solve this equation for x and then we substitute it in the first equation.

x = y + 1.40

0.60 (y +1.40) + 1.5y = 4.62\\\\0.60y + 1.5y = 4.62 - 0.84\\\\2.1y = 3.78

y = \$1.8

3 0
3 years ago
How do I solve this question?
Tanya [424]
Before attempting to solve this question, we must first know three things.

1. A straight line has a measure of 180 degrees.

2. When two angles add up to 180 degrees, those angles are called supplementary.

3. The interior angles of a triangle add up to 180 degrees.

We can see ∠ECT = 180 degrees.

∠DCT is supplementary to ∠DCE.

∠DCT = 140 degreees
∠DCE = x degrees

x + 140 = 180

Solve for x.

x + 140 = 180
x = 40 <-- Subtract 140 from each side

∠DCE = 40 degrees

We know the two interior angles of ΔDEC.

45 + 40 + x = 180

Solve for x.

45 + 40 + x = 180
85 + x = 180 <-- Combine like terms
x = 95

So, the missing angle is equal to 95 degrees.
6 0
3 years ago
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