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cupoosta [38]
2 years ago
10

The expression (3x²+x+8) + (x?- 9) is equivalent to?

Mathematics
1 answer:
Andrei [34K]2 years ago
8 0

Answer: 3x^2+2x-1

Step-by-step explanation:

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Divide. (20x^2-12x+8)/(2x+8)
adell [148]

your answer is might be wrong 460


8 0
3 years ago
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3. Standard deviation is ________. a mean of squared differences the square root of the variance unit-free the covariance 4. Sta
Ksenya-84 [330]

Answer:

3. Standard deviation is the square root of the variance.

4. Standard deviation is useful because it has the same units as the underlying data.

Step-by-step explanation:

3. In statistics, the dispersion in a given data with respect to its mean distribution can be determined or measured by standard deviation and variance. The standard deviation of a distribution can also be determined as the square root of variance.

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5 0
3 years ago
Solve for x……………………….
Jobisdone [24]

Answer:

66

Step-by-step explanation:

Find other side:

116 + x = 180

-116        -116

------------------

      x = 64

Find missing triangle angle:

50 + 64 + x = 180

114 + x = 180

-114        -114

-------------------

       x = 66

Hope this helped.

4 0
3 years ago
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Allison can jog 3 blocks in the same amount of time it takes her brother, Blake, to jog 2 blocks. If they keep jogging at the sa
Nitella [24]

Answer:

Blake will jog 12 blocks

Step-by-step explanation:

Allison : Blake = 3 : 2

If they keep jogging at the same rate, how many blocks will Blake jog if Allison jogs 18 blocks?

Allison : Blake = 18 : x

Equate the ratios

3 : 2 = 18 : x

3/2 = 18/x

Cross multiply

3 * x = 2 * 18

3x = 36

Divide both sides by 3

x = 36 / 3

= 12

x = 12

Blake will jog 12 blocks

6 0
3 years ago
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The managers of an airline analyzed a random sample of flights and found that 48 out of 50 were on time. The airline has 450 fli
Elena L [17]

Answer:

432 flights are expected to arrive at time.

Step-by-step explanation:

48/50= 0.96

0.96 x 450=  432

8 0
3 years ago
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