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3 years ago

Please help me

Mathematics

2 answers:

Olegator [25]3 years ago

8 0

I think its C

cus it passes through (8,2)

aksik [14]3 years ago

3 0

Answer:

C) because it passes through

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Write these numbers in a smallest order<br><br>33%, 1/3, 0.3, π x 10-1

aniked [119]

Answer:

0.3, 33%, 1/3, pi x 10-1

Step-by-step explanation:

Let's simplify all of them so that they're in the same form. 33% is 0.33 as a decimal, since a percentage is out of 100. 1/3 is equal to 0.33333 repeating as a decimal--This one is just one that you have to memorize. 1 divided by 3 will give you your answer. Next, pi multiplied by 10: pi is roughly 3.14159 to the hundred-thousandths place. So we multiply that by 10, giving us 31.4159. -1 gives us 30.4159.

So:

0.3, 33%, 1/3, and lastly pi x 10-1

7 0

2 years ago

What is the value of the expression below -0.75-(-2/5) + 0.4 + (-3/4) help please!!

Reika [66]

-0.75-(-2/5) + 0.4 + (-3/4)

Simplify it :-)

-0.75 + $\frac{2}{5}$ + 0.4 - $\frac{3}{4}$

Add the like terms / add your decimals with your decimals & your fractions with your fractions.

(-0.75 + 0.4) + ( $\frac{2}{5}$ - $\frac{3}{4}$ )

Simplify :-)

0.35 + ( $\frac{8}{20}$ - $\frac{15}{20}$ )

Simplify :-)

0.35 + (- $\frac{7}{20}$ )

Now you turn your decimal into a fraction.

0.35 = 35/100 = 7/50

NEW PROBLEM : $\frac{7}{50} +$ + $\frac{7}{20}$ = ??

Make both denominators 100.

$\frac{7}{50}$ × $\frac{2}{2}$ = 14 / 100

7/20 × 5/5 = 35/100

NEW PROBLEM : $\frac{14}{100}$ + $\frac{35}{100}$ = $\frac{49}{100}$

:-)

8 0

3 years ago

The weights of adobe bricks used for construction are normally distributed with a mean of 3 pounds and a standard deviation of 0

dedylja [7]

Answer: a) 0.8413, b) 0.9987.

Step-by-step explanation:

Since we have given that

Mean = 3 pounds

Standard deviation = 0.25 pounds

n = 28 bricks

So, (a) What is the probability that all the bricks in the sample exceed 2.75 pounds?

$P(X>2.75)\\\\=P(z>\dfrac{2.75-3}{0.25}\\\\=P(z>\dfrac{-0.25}{0.25})\\\\=P(z>-1)\\\\=0.8413$

b) What is the probability that the heaviest brick in the sample exceeds 3.75 pounds?

$P(X>3.75)\\\\=P(z>\dfrac{3.75-3}{0.25})\\\\=P(z>\dfrac{0.75}{0.25})\\\\=P(z>3)\\\\=0.9987$

Hence, a) 0.8413, b) 0.9987.

4 0

3 years ago

Stephanie saw in an ad in the paper that her favorite kind of perfume was I feel for 25% off if the sale price was $15 what was

sashaice [31]

Answer: $20

Step-by-step explanation:

Here os the correct question:

Stephanie saw in an ad in the paper that her favorite kind of perfume was on sale for 25% off. If the sale price was $15, what was the original price of the perfume?

Let the original price of the perfume be y.

Since we are told that 25% is off, that means that 25% has been deducted from the original price. This can be written as:

y - (25% of y) = $15

y - (25/100 × y) = $15

y - 0.25y = $15

0.75y = $15

Divide both side by 0.75

0.75y/0.75 = $15/0.75

y = $20

The original price of the perfume is $20

7 0

3 years ago

Two candidates ran for class president. The candidate that won received 70% of the 350 total votes. How many votes did the winni

labwork [276]

Answer:

49 votes

Step-by-step explanation:

Because 70% of the 350 is 49

3 0

3 years ago