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Alexeev081 [22]

3 years ago

13

Mr. Abrams conducted a survey of 355 students. 72% of them said that they study for tests. How many students said they study for

tests?

1 answer:

Oliga [24]3 years ago

3 0

Rounded Answer: 256

Exact Answer : 255.6

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How many terms are in the arithmetic sequence shown below?<br>15, 7, -1, -9...,-225

NemiM [27]

We know that

We can write an Arithmetic Sequence as a rule:

<span>an = a1 + d(n−1)</span>

where

<span>a1 = the first term
<span>d =the "common difference" between terms

in this problem
a1=15 a2=7 a3=-1 a4=-9 ..... an=-225
d=a2-a1
d=7-15-----> d=-8

</span></span>an = a1 + d(n−1)
for
an=-225
d=-8
a1=15
find n
-225=15+(-8)*(n-1)--> (n-1)=[-225-15]/-8----> n-1=30---> n=30+1---> n=31

the answer is
31

3 0

4 years ago

The perimeter of a rectangular field is 372 yards. If the width of the field is 87 yards, what is its length?__yards

worty [1.4K]

ANSWER

The length of the rectangular field is 99 yards

EXPLANATION

Given information

The perimeter of a rectangle field is 372 yards

The width of the field is 87 yards

To find the length of the rectangular field, follow the steps below

Step 1: Write the formula for finding the perimeter of a rectangular field

$\begin{gathered} \text{ The perimeter of a rectangular field = 2\lparen l + w\rparen} \\ \text{ where l =length, and w = width} \end{gathered}$

Step 2: Substitute the given data into the formula in step 1

$\begin{gathered} \text{ Perimeter = 2 \lparen l + w\rparen} \\ \text{ Perimeter = 372 yards} \\ \text{ width = 87 yards} \\ \text{ 372 = 2\lparen l + 87\rparen} \\ \text{ Divide both sides by 2} \\ \text{ }\frac{372}{2}\text{ = }\frac{2}{2}(l\text{ + 87\rparen} \\ 186\text{ = l + 87} \\ \text{ subtract 87 from each sides of the equation} \\ \text{ 186 - 87 = l + 87 - 87} \\ \text{ 99 = l} \\ l\text{ = 99 yards} \end{gathered}$

Hence, the length of the rectangular field is 99 yards

7 0

1 year ago

Systems of equations substitution y=8 y=x+1

klemol [59]

(8) = x +1

same thing as 8 = 1x

divide both sides by 1 and x = 8 Y= 8

6 0

3 years ago

Write an expression that represents the difference of 32 and N multiplied by 10

NISA [10]

(32-n)10________________

8 0

3 years ago

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What is 12.745 rounded to the nearest tenth

AlekseyPX

Answer:

12.700 i think

Step-by-step explanation:

8 0

3 years ago

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