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3 years ago

Round 7897.5 point to the nearest hundredth to the second decimal place

Mathematics

1 answer:

Fynjy0 [20]3 years ago

3 0

Answer:

It looks like this problem is unsolvable, as the decimal only goes to the 10th place.. is there more to the problem?

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What is the solution to -3/7m < 21???

evablogger [386]

Answer:

-(3/7)m<21

m>21*-(7/3)

m>-7*7

m>-49

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3 years ago

Angle B measures 60. What is the measure of the angle that is complementary to angle B ?

MaRussiya [10]

120 degrees
(180-60=120)

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3 years ago

Read 2 more answers

An online store sells speakers the higher prices sells 170 and the lower priced 90last week the store sold 4 times as many lower

maksim [4K]

Answer:

The number of lower-priced speaker sold was 28

Step-by-step explanation:

<u><em>The complete question is</em></u>

An online store sells two types of speaker. The higher-priced speaker sells for $170 and the lower-priced speaker sells for $90. Last week the store sold four times as many lower-priced speaker as higher-priced speaker. Combined sales totaled $3,710. How many lower-priced speaker did it sell?

Let

x ----> the number of higher-priced speaker sold

y ----> the number of lower-priced speaker sold

we know that

Last week the store sold four times as many lower-priced speaker as higher-priced speaker

$y=4x$ ----> equation A

Combined sales totaled $3,710

$170x+90y=3,710$ ----> equation B

Solve the system by graphing

Remember that the solution is the intersection point both graphs

Using a graphing tool

The solution is the point (7,28)

see the attached figure

therefore

The number of lower-priced speaker sold was 28 and the number of higher-priced speaker sold was 7

7 0

3 years ago

Consider a value to be significantly low if its z score less than or equal to minus−2 or consider a value to be significantly hi

katrin2010 [14]

Answer:

Test scores of 10.2 or lower are significantly low.

Test scores of 31.4 or higher are significantly high.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 20.8, \sigma = 5.3$

Identify the test scores that are significantly low or significantly high.

Significantly low

Z = -2 and lower.

So the significantly low scores are thoses values that are lower or equal than X when Z = -2. So

$Z = \frac{X - \mu}{\sigma}$

$-2 = \frac{X - 20.8}{5.3}$

$X - 20.8 = -2*5.3$

$X = 10.2$

Test scores of 10.2 or lower are significantly low.

Significantly high

Z = 2 and higher.

So the significantly high scores are thoses values that are higherr or equal than X when Z = 2. So

$Z = \frac{X - \mu}{\sigma}$

$2 = \frac{X - 20.8}{5.3}$

$X - 20.8 = 2*5.3$

$X = 31.4$

Test scores of 31.4 or higher are significantly high.

3 0

3 years ago

Tina starts her paper route at the corner of two streets. She travels 8 blocks south, 13 blocks west, 8 blocks north, and 6 bloc

suter [353]

If the starting point is (0,0), then she goes to (0, -8), then to (-13, -8), then to (-13, 0), then to (-7, 0). (-7, 0) is 7 units from the starting point. So, 7 blocks.

6 0

3 years ago

Round 7897.5 point to the nearest hundredth to the second decimal place￼

Round 7897.5 point to the nearest hundredth to the second decimal place