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3 years ago

Factorise the following either by completing

Mathematics

2 answers:

nikklg [1K]3 years ago

7 0

Answer:

2(m + 4n).

Step-by-step explanation:

2m + 8n The HCF is 2 so the answer is

2(m + 4n).

umka2103 [35]3 years ago

5 0

Answer:

2(m + 4n)

Step-by-step explanation:

Given

2m + 8n ← factor out 2 from each term

= 2(m + 4n) ← in factored form

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sineoko [7]

Answer:

Step-by-step explanation:

all the angles of a triangle out of 180 so subtract the two numbers you have from 180

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2 years ago

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In a large population of college students 20% of the students have experienced feelings of math anxiety. If you take a random sa

NARA [144]

Answer:

In a large population of college students 20% of the students have experienced feelings of math anxiety. If you take a random sample of 10 students from this population, the probability that exactly 2 students have experienced math anxiety is:

Step-by-step explanation:

a .3020

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2 years ago

Simplify the ratio : 72:16:32<br> What is ans

ArbitrLikvidat [17]

Answer:

9 : 2 : 4

Step-by-step explanation:

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3 years ago

Ari said there are three possible outcomes when you spin this spinner twice: two reds, a yellow and a red, or two yellows.

EastWind [94]

Answer:

From inspection of the diagram, we can see that the spinner is divided into <u>4 equal parts</u>, where 3 parts are red and 1 part is yellow.

$\sf Probability\:of\:an\:event\:occurring = \dfrac{Number\:of\:ways\:it\:can\:occur}{Total\:number\:of\:possible\:outcomes}$

Therefore,

$\implies \textsf{Probability of getting a red} = \sf \dfrac{3}{4}$

$\implies \textsf{Probability of getting a yellow} = \sf \dfrac{1}{4}$

<u>Multiplication Rule for Independent Events</u>

For independent events A and B:

$\sf P(A\:and\:B)=P(A) \times P(B)$

Therefore,

$\begin{aligned}\implies \sf P(yellow\:and\:yellow) & = \sf P(yellow) \times P(yellow)\\\\ & = \sf \dfrac{1}{4} \times \dfrac{1}{4}\\\\ & = \sf \dfrac{1}{16}\end{aligned}$

<h3><u>Conclusion</u></h3>

Ari is incorrect. The spinner is divided into 4 parts, where only one part is yellow. Therefore, the probability of spinning a yellow is 1/4. As the events are independent, the Multiplication Rule should be used to calculate the probability of spinning 2 yellows. So the probability of spinning 2 yellows is 1/4 x 1/4 = 1/16.

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1 year ago

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What are the constants in the expression below? Check all that apply.

AlexFokin [52]

Constants are numbers alone with no variables.

The constants are: 12, -3.7, 1/3

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3 years ago

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