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2 years ago

Solve the inequality

Mathematics

1 answer:

aev [14]2 years ago

3 0

Answer:

x<3

Step-by-step explanation:

4x-7<5

4x<5+7

4x<12

x<3

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The final exam scores in a statistics class were normally distributed with a mean of

IRISSAK [1]

Answer:

68.27%

Step-by-step explanation:

By the Empirical Rule, as 65% and 75% are both one standard deviation apart from the mean of 70%, then this represents 68.27% of the data.

4 0

2 years ago

Solve for m. –8m = 3 − 9m m =

Oksanka [162]

Answer:

m=3

Step-by-step explanation:

–8m = 3 − 9m

-8+9m = 3

m = 3

8 0

2 years ago

Read 2 more answers

castortr0y [4]

I'm not going to say I'm 100% correct.

6 0

2 years ago

What is an ordered pair (x,y) that is a solution to x-3y=3

Alina [70]

Answer:

an ordered pair could be (9,2)

6 0

3 years ago

If john makes a contribution to a charity fund at school, the average contribution size will increase by 50% reaching $75 per pe

Sonja [21]

Answer:

$Z= 75*6 -250=200$

So then the correct answer is B. $200.

Step-by-step explanation:

Notation

Let X be the average contribution size before John makes his contribution.

Let Y be the total contribution size before John makes his contribution.

Let Z be John's contribution.

We know that for this case $ 75 represent the original average amount before the contribution with 50% increase so we can set up the following equation in order to find the original average amount

$1.5 X = 75$

And solvong for X we got:

$X = \frac{75}{1.5}= 50$

Now we can find the total contribution before the donation with the following proportion:

$\frac{50}{1}= \frac{Y}{5}$

$Y = 250$

And then with the formula of average taking in count the 6 values we can find the size of donation Z like this:

$\frac{Y+Z}{6}= 75$

$\frac{250+Z}{6}= 75$

$Z= 75*6 -250=200$

So then the correct answer is B. $200.

5 0

2 years ago