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3 years ago

2b+3c^2/4a^2-2b a=8,b=4,c=16

Mathematics

2 answers:

ELEN [110]3 years ago

4 0

Answer:3.13

Step-by-step explanation:

Represent the variable with is value.

8+768/256-8

776/248

=3.129

~ 3.13

vekshin13 years ago

3 0

Answer:

The answer is 6

Step-by-step explanation:

try to change all variable to the number below

2(4)+3(16)^2/4(8)^2-2(4)

8+48^2/32^2-8

so now you can do multiplication and division first

48^2=96

96/32=3

3^2=6

After that, you put the 6 back where it belong

8+6-8=

So the Answer equal to 6

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Adhy, Ben and Clayson shared a bag of chocolates. The ratio of Adhy's share to Ben's share is 3:4 while

Ira Lisetskai [31]

Answer: 33

Step-by-step explanation:

The ratio of Adhy's to Ben's is 3:4 so let

Adhy = 3x

Ben = 4x

Since Ben = Adhy + 9

then 4x = 3x + 9

--> x = 9

So, Adhy = 3x = 3(9) = 27

Ben = 4x = 4(9) = 36

*************************************************************

The ratio of Ben's to Clayson's is 3:5

How do we get Ben's ratio of 3 equal to 36? by multiplying by 12

Ben : Clayson

3 x 12 5 x 12

36 60

So, Clayson = 60

***********************************************************

The difference between Adhy and Clayson is:

Clayson - Adhy

60 - 27 = 33

3 0

3 years ago

Kate can run 5 blocks per minute she wants to run 80 blocks how long will it take her to finish if she has already run 20 blocks

ki77a [65]

12 minutes because 80-20 is 60 and 60 divides by 5 is 12

3 0

3 years ago

Read 2 more answers

What is the length of the side of a right triangle that has a side length of 7 cm and a hypotenuse that measures 25 cm?

Elenna [48]

It would be: 25² = 7² + b²
b² = 625 - 49
b = √576
b = 24

In short, Your Answer would be Option B

Hope this helps!

7 0

3 years ago

223,682 divided by 42 (standard algorithm) im so stuck

julia-pushkina [17]

Answer:

its 5325.76190476

or 5325.8 if you want to round it

Step-by-step explanation:

3 0

3 years ago

Consider the following hypothesis test:

Gnom [1K]

Answer:

a. z=3.09. Yes, it can be concluded that the population mean is greater than 50.

b. z=1.24. No, it can not be concluded that the population mean is greater than 50.

c. z=2.22. Yes, it can be concluded that the population mean is greater than 50.

Step-by-step explanation:

We have a hypothesis test for the mean, with the hypothesis:

$H_0: \mu\leq50\\\\H_a:\mu> 50$

The sample size is n=55 and the population standard deviation is 6.

The significance level is 0.05.

We can calculate the standard error as:

$\sigma_M=\dfrac{\sigma}{\sqrt{n}}=\dfrac{6}{\sqrt{55}}=0.809$

For a significance level of 0.05, the critical value for z is zc=1.644. If the test statistic is bigger than 1.644, the null hypothesis is rejected.

a. If the sample mean is M=52.5, the test statistic is:

$z=\dfrac{M-\mu}{\sigma_M}=\dfrac{52.5-50}{0.809}=\dfrac{2.5}{0.809}=3.09$

The null hypothesis is rejected, as z>zc and falls in the rejection region.

b. If the sample mean is M=51, the test statistic is:

$z=\dfrac{M-\mu}{\sigma_M}=\dfrac{51-50}{0.809}=\dfrac{1}{0.809}=1.24$

The null hypothesis failed to be rejected, as z<zc and falls in the acceptance region.

c. If the sample mean is M=51.8, the test statistic is:

$z=\dfrac{M-\mu}{\sigma_M}=\dfrac{51.8-50}{0.809}=\dfrac{1.8}{0.809}=2.22$

The null hypothesis is rejected, as z>zc and falls in the rejection region.

8 0

4 years ago