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3 years ago

Only evens

Mathematics

1 answer:

VARVARA [1.3K]3 years ago

3 0

Answer:

2. for the first equation, it works, for the second it doesnt so the answer is no

i cant graph for you, but its easy, just use y=mx+b m being the slope which is rise over run

8. x=6, y=-1

10. x=-5 y=5

this is all i could do in such a short notice, but i hope it helped you!

Step-by-step explanation:

for 8, $2x-x+5=11\\x+5=11\\x=6$

for 10,

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it takes joey 1/16 of an hour to write one thank you card.How many thank you cards can he make in 3/4 of an hour?

devlian [24]

I hope this helps you

5 0

2 years ago

Which of the following options have the same value as 2\%2%2, percent of 909090?

bekas [8.4K]

Answer:

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Hope This Helps!!!

7 0

1 year ago

27) Harry made 4 hits in 9 times at-bat. If she keeps the same success level, how many hits should she make in 18 times at bat?

9966 [12]

Answer:

8 hits

Step-by-step explanation:

The ratio is :

hits : times-at-bat = 4 : 9

Now, we have 18 times at bat.

Multiply both sides of the ratio with 2 :

4 x 2 hits : 9 x 2 times at bat
8 hits : 18 times at bat

Harry should make 8 hits in 18 times at bat.

6 0

1 year ago

Scores on a college entrance examination are normally distributed with a mean of 500 and a standard deviation of 100. What perce

Alla [95]

Answer:

The percentage is $P(350 < X 650 ) = 86.6\%$

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 500$

The standard deviation is $\sigma = 100$

The percent of people who write this exam obtain scores between 350 and 650

$P(350 < X 650 ) = P(\frac{ 350 - 500}{ 100}$

Generally

$\frac{X - \mu }{\sigma } = Z (The \ standardized \ value \ of \ X )$

$P(350 < X 650 ) = P(\frac{ 350 - 500}{ 100}$

$P(350 < X 650 ) = P(-1.5$

$P(350 < X 650 ) = P(Z < 1.5) - P(Z < -1.5)$

From the z-table $P(Z < -1.5 ) = 0.066807$

and $P(Z < 1.5 ) = 0.93319$

=> $P(350 < X 650 ) = 0.93319 - 0.066807$

=> $P(350 < X 650 ) = 0.866$

Therefore the percentage is $P(350 < X 650 ) = 86.6\%$

3 0

3 years ago

<img src="https://tex.z-dn.net/?f=%28%5Csqrt%282%29-%5Csqrt%28-2%29%29%28%5Csqrt%2818%29%2B%5Csqrt%28-2%29%29" id="TexFormula1"

prohojiy [21]

Rewrite as (2^1/2 + 2^1/2)*(18^1/2-2^1/2) = 8

5 0

2 years ago