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Tanzania [10]
3 years ago
8

Find the area of a rectangle that measures 7 us by 23 yd

Mathematics
1 answer:
velikii [3]3 years ago
5 0
7 x 23 but first you need to convert the yds or the us, whatever that is..
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42 is 200% of what number
svetlana [45]
Divide 42 by 2 and get 21.
7 0
3 years ago
Find the critical value tc for the confidence level cequals 0.95 and sample size nequals 19.
Alex_Xolod [135]

The critical values are fixed values which can be obtained from the standard t crit  tables. We can find the critical value tc when the degrees of freedom and confidence level are given. The degrees of freedom is simply:

Degrees of Freedom = Number of samples – 1

Degrees of Freedom = 19 – 1

Degrees of Freedom = 18

From the t critical tables, the tc corresponding to Degrees of Freedom equal to 18 and Confidence level equal to 95% is as follows:

tc = 2.101

Therefore this means that any t value beyond 2.101, we already reject the null hypothesis.

8 0
3 years ago
A vacant city lot is being turned into a neighborhood garden. The neighbors want to fence in a triangular section of the lot and
ozzi

9514 1404 393

Answer:

  17 ft, 27 ft, 20 ft

Step-by-step explanation:

Let s represent the length of the shortest side. The the longest side is (2s-7) and the third side is (s+3). The perimeter is the sum of the side lengths:

  64 = s +(2s -7) +(s +3)

  64 = 4s -4 . . . . . . . . . . . collect terms

  16 = s -1 . . . . . . . . . . divide by 4

  17 = s . . . . . . . . . add 1

  2s -7 = 2·17 -7 = 27 . . . . . the length of the longest side

  s +3 = 17 +3 = 20 . . . . . . . the length of the third side

The side lengths are 17 feet, 27 feet, and 20 feet.

8 0
3 years ago
Acellus<br> Find the measure of the arc.<br> с<br> D<br> А<br> 146° E<br> B<br> MAC = [? ]°
Olenka [21]

Answer:

The measure of arc AC length is 90 degrees

Step-by-step explanation:

Here, we want to get the measure of the arc AC

From what we have, the angle at the middle facing this arc is a right angle

A right angle is of the size 90. degrees

with respect to the diagram, the angle at the center is equal to the measure of the arc facing it

Thus, we can conclude here in this case that the measure of arc AC is 90 degrees

7 0
3 years ago
The temperature outside changed from 64°F to 43°F over a period of seven days. If the temperature changed by the same amount eac
sertanlavr [38]

Answer: -3°F

Step-by-step explanation:

From the question, we are informed that the temperature outside changed from 64°F to 43°F over a period of seven days. The total change will be:

= 43°F - 64°F

= -21°F

If the temperature changed by the same amount each day, the daily temperature change will now be:

= -21°F / 7

= -3°F

The temperature decreased by 3°F daily

3 0
3 years ago
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