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2 years ago

In a class of 35 student, 19 take history and 12 take economics. If 5 take both subject, how many take neither

Mathematics

2 answers:

timurjin [86]2 years ago

6 0

Answer: is 9

Step-by-step explanation: brainlest please

vredina [299]2 years ago

6 0

Answer:

9 take niether

Step-by-step explanation:

19-5 = 14

12-5 = 7

14+7+5=26

35-26 = 9

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The table shows the results of a survey of 400 random people on whether they like liquid soap, bar soap, or both. A 4-column tab

In-s [12.5K]

Answer: 100/400

Step-by-step explanation:

$\begin{array}{l|c|c|c}&Liquid&Not\ Liquid&Total\\ Bar&200&100&300\\Not\ Bar&80&20&100\\Total&280&120&400\end{array}$

$\dfrac{Not\ Bar:Total}{Total:Total}\quad =\dfrac{100}{400}$

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3 years ago

Pleasee answer correctly !!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!

Vera_Pavlovna [14]

Answer:3.6

Step-by-step explanation:

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3 years ago

Read 2 more answers

What is the sum of the geometric series in which a1 = −5, r = 3, and an = −405?

xxMikexx [17]

$a_1=-5;\ r=3;\ a_n=-405\\\\a_n=a_1r^{n-1}\\\\subtitute\\\\-5\cdot3^{n-1}=-405\ \ \ |divide\ both\ sides\ by\ (-5)\\\\3^{n-1}=81\\\\3^{n-1}=3^4\iff n-1=4\to n=5\\\\S_n=\dfrac{a_1(1-r^n)}{1-r}\\\\S_5=\dfrac{-5(1-3^5)}{1-3}=\dfrac{-5(1-243)}{-2}=\dfrac{5\cdot(-242)}{2}=5\cdot(-121)=-605\\\\\\Answer:\boxed{S_5=-605}$

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3 years ago

8th GRADE QUESTION GOOD EXPLAIN WILL MARK AS CROWN

Aloiza [94]

Answer:

43.5

Step-by-step explanation:

Hope

7 0

2 years ago

The sides of two cubes are in the ratio 2:1. What is the ratio of their volumes ?

olasank [31]

Please mark as brainliest

Answer:

we know that, Volume of cube=a³

Let volume of 1st cube be 2x with side a and other be x with side A (according to given ratio)

Step-by-step explanation:

ATQ: 2x=a³ and, x=A³

a=³√2x and, A=x

we know that, surface area of cube is 6a²

Thus, surface area of 1st cube = 6(³√2x)²

= 6³√4x²

Surface area of 2nd cube=6(x)²=6x²

Ratio of S.A=(6³√4x²)÷(6x²)

Ratio of S.A=³√4:1

Please mark as brainliest

Have a great day, be safe and healthy

Thank u

5 0

3 years ago