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3 years ago

8

In a survey of Year 6 pupils, 25% said their favourite colour was red. If 16 pupils said red, how many pupils are there in Year

6?

1 answer:

Slav-nsk [51]3 years ago

4 0

I believe the answer is 64 people because if you divide 16/25%=64 and to be sure you do 16/64 which gives you 25%

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What is distributive property and one example of it?

mestny [16]

Example of distributive property: 4(2+3)
The first step is to multiply the 4 and the 2
It will now look like 8+4(3)
Now you must multiply the 4 and the 3
Then it will look like 8+12
In which 8+12=20

6 0

4 years ago

Find the indicated probability.

Ksju [112]

Answer:

$P(B) = 0.55$

Step-by-step explanation:

Given

$P(A\ or\ B) = 0.8$

$P(A) = 0.4$

$P(A\ and\ B) = 0.15$

Required

Find P(B)

In probability, we have:

$P(A\ or\ B) = P(A) + P(B) - P(A\ sd B)$

Substitute values

$0.8 = 0.4 + P(B) - 0.15$

Collect Like Terms

$P(B) = 0.8 - 0.4 + 0.15$

$P(B) = 0.55$

8 0

3 years ago

Mr. Barnes hired a plumber to fix a leak. The total cost, in dollars, that the plumber charges for a job can be modeled by the f

xenn [34]

After 5 hrs not exactly 5 hrs because that’s exactly his limit

3 0

3 years ago

Can someone explain this pls. i need help on #6

Oduvanchick [21]

Answer:

4

Step-by-step explanation:

9 times 4 = 36 and 36-10= 26

26 times two is 52

3 times 4 is 12

12 times two is 24

52+24= 76

5 0

3 years ago

Is three a solution of z^2 +1=4+3z?

DiKsa [7]

Answer:

no

Step-by-step explanation:

z^2 +1=4+3z

Substitute into the equation and see if it is true

3^2 +1 = 4+3(3)

9+1 = 4+9

10 = 13

This is not a true statement so this is not a solution

8 0

3 years ago