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3 years ago

Evaluate 2times 8+5-18divided by3

Mathematics

1 answer:

Taya2010 [7]3 years ago

4 0

Answer:

Step-by-step explanation:

PEMDAS (order of operations)

2 times 8=16

18/3= 6

16+5-6=15

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Find the tenth term in each sequence. -1,2/3,7/3,4,17/3

Luba_88 [7]

It'a an arithmetic sequence:

$a_1=-1\\\\a_2=-1+\dfrac{5}{3}=-\dfrac{3}{3}+\dfrac{5}{3}=\dfrac{2}{3}\\\\a_3=\dfrac{2}{3}+\dfrac{5}{3}=\dfrac{7}{3}\\\\a_4=\dfrac{7}{3}+\dfrac{5}{3}=\dfrac{12}{3}=4\\\\a_5=4+\dfrac{5}{3}=\dfrac{12}{3}+\dfrac{5}{3}=\dfrac{17}{3}\\\vdots\\\\\text{The general formula for nth term of an arithmetic sequence}\\\\a_n=a_1+(n-1)d\\\\\text{We have}\ a_1=-1\ \text{and}\ d=\dfrac{5}{3}.\\\\\text{Substitute}\\\\a_n=-1+(n-1)\left(\dfrac{5}{3}\right)=-1+\dfrac{5}{3}n-\dfrac{5}{3}=\dfrac{5}{3}n-\dfrac{3}{3}-\dfrac{5}{3}$

$\boxed{a_n=\dfrac{5}{3}n-\dfrac{8}{3}}$

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2 years ago

a student answers 75% of the questions on a math exam correctly. if he answers 30 questions correctly. how many questions are on

Komok [63]

There is 40 questions on the exam

8 0

2 years ago

Find the level of a two-sided confidence interval for t = 2.776 with sample size 5. express the answer as a percent.

Margaret [11]

Answer: NOTHING I JUST WANT THE 10 WITHDRAWED POINTS HAHAHAHAHAHAHAHAHAH

Step-by-step explanation:

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2 years ago

Brian spends 3 5 of his wages on rent and 1 3 on food. If he makes £735 per week, how much money does he have left?

Margarita [4]

Answer :

Brian has $49 left.

Step by step explanation :

Step 1 : Find how much money Brian spends on rent and food.

First question we should be asking is what is 3/5 of 735?

Let's find that.

$\frac{3}{5}$ * $\frac{735}{1}$

= $\frac{(3)(735)}{(5)(1)}$

= $\frac{2205}{5}$

= 441

We know Brian spends $441 on rent. Now we find how much he spends on food.

$\frac{1}{3} * \frac{735}{1}$

= $\frac{(1)(735)}{(3)(1)}$

= $\frac{735}{3}$

= 245

Brian spends $245 on food.

Step 2 : Add what he spends on rent and food together.

$441 + $245 = $686

Step 3 : To find out how much money Brian has left, we subtract $686 from $735.

$735 - $686 = $49

Conclusion : Brian has $49 left.

Hope this helps, please mark brainliest if possible. Have a nice day.

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2 years ago

Values of x and g(x) are given in the table below. x 3.1 3.6 4.1 4.6 5.1 5.6 6.1 6.6 g(x) 3.8 4.8 5.4 5.8 6.4 7.8 9.4 11.4 for w

lina2011 [118]

I'm assuming that each number is in correspondence with a number of the other variable in terms of order.

What you want to do is look at each value of g(x) and see which number is closest to 3, then which ever value of x was plugged in for that function is your answer.

So the value of g(x) that is closest to 3 is 3.8 which I'm assuming that would mean the value of x would be 3.1 because it also comes first in the order you gave

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3 years ago