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Rus_ich [418]
4 years ago
7

Really need help !!!

Mathematics
1 answer:
cupoosta [38]4 years ago
4 0

Answer:

i think its c

Step-by-step explanation:

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If adding two fractions that are both greater than one half what must be true about the sum
lys-0071 [83]

Answer:

The solution is greater than 1.

4 0
3 years ago
Given side lengths 4 units, 8 units, and x units, determine the range in which x must lie in order for a triangle to exist.
Nana76 [90]

Answer:

A is the correct answer

Step-by-step explanation:

Mathematically if we have lengths a, b and c

For a triangle to occur, let us say that the third side is c

then a + b must be greater than or equal to c

Hence c must be equal to (4 + 8) or greater than (4 + 8)

With the options given , A is the correct answer

7 0
3 years ago
The daily revenues of a cafe near the university are approximately normally distributed. The owner recently collected a random s
lbvjy [14]

Answer:

The sample size to obtain the desired margin of error is 160.

Step-by-step explanation:

The Margin of Error is given as

MOE=z_{crit}\times\dfrac{\sigma}{\sqrt{n}}

Rearranging this equation in terms of n gives

n=\left[z_{crit}\times \dfrac{\sigma}{M}\right]^2

Now the Margin of Error is reduced by 2 so the new M_2 is given as M/2 so the value of n_2 is calculated as

n_2=\left[z_{crit}\times \dfrac{\sigma}{M_2}\right]^2\\n_2=\left[z_{crit}\times \dfrac{\sigma}{M/2}\right]^2\\n_2=\left[z_{crit}\times \dfrac{2\sigma}{M}\right]^2\\n_2=2^2\left[z_{crit}\times \dfrac{\sigma}{M}\right]^2\\n_2=4\left[z_{crit}\times \dfrac{\sigma}{M}\right]^2\\n_2=4n

As n is given as 40 so the new sample size is given as

n_2=4n\\n_2=4*40\\n_2=160

So the sample size to obtain the desired margin of error is 160.

4 0
4 years ago
A rectangular prism has a length of 16 feet, a height of 15 feet, and a width of 8 feet. What is its volume, in cubic feet?
irinina [24]

The answer is 1920 cubic feet.

8 0
3 years ago
Read 2 more answers
Which equation has no real solutions?
Varvara68 [4.7K]

Answer:

C is the answer

Step-by-step explanation:

5 0
3 years ago
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