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3 years ago

If u help I’ll give u brainliest but please give correct answer

Mathematics

1 answer:

Black_prince [1.1K]3 years ago

4 0

Answer:

here is no question sorry

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Find an equation for the nth term of the arithmetic sequence. -1, 2, 5, 8, ...

aev [14]

-1 + 3(n-1)
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3 0

2 years ago

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I forgot how to divide fractions properly. please send help.

Mamont248 [21]

Answer:

2.5 or 10/4

Step-by-step explanation:

2÷4/5

Integers can be fractions. Which are just the summation of equal parts. So integers can be written in any fractional form as you like,

2/1÷4/5

But turning your fraction into an integer is not enough to divide, you must first use the reciprocal form of your dividend. and then you multiply to obtain your answer. (The reason is that division is multiplication of the reciprocal)

2/1×5/4

And tadaa! you get your answer

10/4

You can also simplify it!

5/2

6 0

3 years ago

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The table displays the frequency of scores for a calculus class on an exam. The mean of the exam scores is 3.5. Score 1 2 3 4 5

vladimir1956 [14]

Answer:

f=11

Mode=4

Median=4

Explanation:

We are given that

a.Mean of the exam score, $\bar x$ =3.5

Score(x) frequency C.F

1 1 1

2 3 4

3 f 15(4+f=4+11)

4 13 28

5 4 32

$\sum f_i=1+3+f+13+4=21+f$

$\sum f_ix_i=1(1)+2(3)+3(f)+4(13)+5(4)=1+6+3f+52+20=79+3f$

$(\bar x)=\frac{\sum f_ix_i}{\sum f_i}$

Using the formula

$3.5=\frac{79+3f}{21+f}$

$73.5+3.5f=79+3f$

$3.5f-3f=79-73.5$

$0.5f=5.5$

$f=\frac{5.5}{0.5}=11$

b.Mode:The number which is repeat most times .

4 repeat most times

Hence, mode of all exam scores=4

N=32

N is even

$Median=\frac{(\frac{n}{2})^{th}+(\frac{n}{2}+1)^{th}}{2}$

Median= $\frac{16th+17th}{2}=\frac{4+4}{2}=\frac{8}{2}=4$

7 0

3 years ago

at the beach, the cost for a surf board is 39 dollars for 3 hrs. at this rate what will be the charge in 8 hrs.

prohojiy [21]

Answer:

$104

Step-by-step explanation:

So, in one hour it would cost $13. Times 8, because we want to see what would be the cost for 8 hours, and 8 times 13 is 104.

8 0

3 years ago

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Because a Rectangle is a parallelogram the properties that were true for a parallelogram are also true for a rectangle. TRUE OR

wariber [46]

Yes, it's true.

Every rectangle is a parallelogram, but not every parallelogram is rectangle.

So, every parallelogram's properties will be same to rectangle, but not every rectangle's property will be same as parallelogram.

Hope it helps ya! 

8 0

3 years ago