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aleksandr82 [10.1K]
3 years ago
6

How does one do this problem?

Mathematics
1 answer:
Alex Ar [27]3 years ago
7 0
X = SQRT( 4 * (12+4))
x - sqrt( 4 * 16)
x = sqrt(20)
x =  2 sqrt(5)
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Y=4x^2+4 opens upward or downward
maxonik [38]

Answer:

upward

Step-by-step explanation:

y=4x²+4

Look at the coefficient of x²

If it is positive, it opens upward, IF it is negative, it opens downward.

In this case, the x² coefficient is +4, hence it opens upward

(see attached for plot)

3 0
4 years ago
Jack took a test and got 13 out of 17 points. He took a make-up test and got 12 out of 15 points.
andrezito [222]
The answer is choice A, a 3.5% increase.
12/15 = 80%
13/17 = 76.47%

80% - 76.47% = 3.5%
6 0
3 years ago
Read 2 more answers
Evaluate the expression -10-6+4 divided by (-0.5)(-2)
VARVARA [1.3K]

Answer:

-12

Step-by-step explanation:

numerator: -10 - 6 + 4 = -16 + 4 = - 12

denominator: (-0.5)(-2) = 1 Try this on your calculator.

Answer

-12 / 1 = - 12

7 0
4 years ago
A box contains 9 identical glass spheres that are used to make snow globes.
DIA [1.3K]
Uhmmm B I pretty sure
5 0
3 years ago
Help me answer for 11 points
Tcecarenko [31]

Answer:

Just Transposition...

Step-by-step explanation:

12×7=84=d

92-49=43=e

28+57=85=f

96÷16=6=g

11×8=88=h

95+5-29=100-29=71=I

55-6+21=70=j

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-20+17+61=61+3=64=n

hope it helps

4 0
3 years ago
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