3 years ago

CAN SOMEBODY TRY TO DO MY MATH CHALLENGE PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

Mathematics

2 answers:

Butoxors [25]3 years ago

5 0

Answer:

Step-by-step explanation:

You need the workings?

miss Akunina [59]3 years ago

4 0

The answer is A is you want me to explain I can for you

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If deborah ran 3 2/5 miles on monday and on tuesday she ran 4 1/5 miles how many miles did she run on those two days together

Ira Lisetskai [31]

3 2/5 + 4 1/5
3 + 4 = 7
2/5 + 1/5 = 3/5
The answer is 7 3/5
Hope this helps!

7 0

4 years ago

Simplify the expression: –3(–7 + 3z)

aleksandrvk [35]

Hey there! I'm happy to help!

We want to multiply each term inside the parentheses by the number on the outside.

-3(-7)=21

-3(3z)=-9z

Therefore, our expression is 21-9z.

Now you know how to use the distributive property! Have a wonderful day! :D

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4 years ago

The yearly profit of a company in thousands of dollars can be modeled by P(t) = t4 − 5t2 + 4, where t is the number of years sin

disa [49]

(t^2-1)(t^2-4)
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4 years ago

Please help i am confused

Kaylis [27]

Answer: 12.16

Step-by-step explanation:

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2 years ago

If a certain machine makes electrical resistors having a mean resistance of 40 ohms and a standard deviation of 2 ohms, what is

Anna71 [15]

Answer:0.0668

Step-by-step explanation:

Given

mean of sample $\mu =40$

Standard deviation $\sigma =2$

For $n=36$ sample

Random variable $Z=\frac{X-\mu }{\frac{\sigma }{\sqrt{n}}}$

For combined resistance of 1458 ohm mean resistance of $\mu =\frac{1458}{36}=40.5$

$P(40.5$

$=P(\frac{40.5-40}{\frac{1}{3}}$

$=P(1.5$

$=1-P(Z\leq 1.5)$

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$=0.0668$

6 0

3 years ago