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kupik [55]
3 years ago
5

a rectangular sandbox has a width of 15 ft and a length of X feet which expression represents the perimeter of the sandbox ​

Mathematics
1 answer:
Phantasy [73]3 years ago
5 0

Answer:

15(2) + x(2)= perimeter

Step-by-step explanation:

You might be interested in
An Angle measures 64 more than the measure of its supplementary angle what is the measure of each angle
ValentinkaMS [17]

Answer:

Original angle = 122*

Supplementary angle = 58*

Step-by-step explanation:

A supplementary angle is one of two angles that make up 180*

If one angle is 30*, its supplementary angle is 150*. 30 + 150 = 180.

So in this case we have two angles, the original and the supplementary angle. The original angle is 64* more than the supplementary angle. The key word is MORE.

The formula to figure it out would look like this:  x + (x + 64) = 180

x is the supplementary angle

x + 64 is the original angle (64 MORE than its supplementary angle)

180 is the total measure of the two angles because they are supplementary and we know that supplementary angles always equals 180* when added together.

Take the formula and do a little algebra.

x + (x + 64) = 180

Subtract 64 from both sides

x + x = 116

Combine the x's

2x = 116

Divide both side by 2

x = 58

Remeber we know that the original angle is 64 more than the supplementary angle, so we'll add the 64 to the value of x and we get 122.

x + 64 = 122

Check our work:

x + (x + 64) = 180

58 + 58 + 64 = 180

4 0
3 years ago
If (-3)^-5=1/x what is the value of x<br><br> Answers:<br><br> -243<br> -1/243<br> 1/243<br> 243
Inga [223]
Solve -3^-5.

Knowing that x^{-1} = \frac{1}{x}, then -3^{-5}= \frac{-1}{243}

That means that x = -243.
6 0
3 years ago
Find the 20th term of the arithmetic sequence 15, 9, 3, -3, ...
RUDIKE [14]

The 20th term is -106

15,9,3,-3,-9,-15,-21,-28,-35,-41,-46 (10) -6 x 10 = -60

-60 + -46

-106

You're just subtracting by 6.

4 0
3 years ago
The factory workers made 715 toys per day if they work five days per week how many toys well the workers make in three weeks
Furkat [3]
Is this too old? um 715 toys per day times 5 equals 3575. 3575 times 3 is <span>10725. so the workers will make 10725 toys in 3 weeks.</span>
8 0
3 years ago
Read 2 more answers
A survey of nonprofit organizations showed that online fundraising has increased in the past year. You want to estimate the popu
kakasveta [241]

Answer:

e. a point estimate

Step-by-step explanation:

When an estimate for the unknown population parameter is expressed by a single value it is called a point estimate.

Example : If we wish to find the height of a very large group of students on the basis of a sample and we find it to be 64 inches. 64 inches is the point estimate.

<em>Similarly the value given is the point estimate.</em>

Point estimate of the population parameter provides as an estimate a single value calculated from the sample that is likely to be close in value to the unknown parameter. It is to be noted that a point estimate will not in general be equal to the population parameter as the random sample used is one of the many possible samples which could be chosen from the population.

6 0
3 years ago
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