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svetlana [45]
3 years ago
7

I didn’t pay attention in class, help I’ll give 15 points and the crown thing

Mathematics
1 answer:
eduard3 years ago
4 0

Answer:

8

Step-by-step explanation:

256 = 64 • 64

64 • 64 = 8 • 8 • 8 • 8

It's the 4th root of 256

The number comes out to 8

Hope this helps! And one more thing...

Next time, pay attention!

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A $500 couch is marked up 20%. What is the new price of the couch?
Aleks04 [339]
Pretty sure the answer is $600

Hope this helps
6 0
3 years ago
If 28% of students in College are near-sighted, the probability that in a randomly chosen group of 20 College students, exactly
cluponka [151]

Answer: (D) 16%

Step-by-step explanation:

Binomial probability formula :-

P(x)=^nC_xp^x(1-p)^n-x, where n is the sample size , p is population proportion and P(x) is the probability of getting success in x trial.

Given : The proportion of students in College are near-sighted : p= 0.28

Sample size : n= 20

Then, the the probability that in a randomly chosen group of 20 College students, exactly 4 are near-sighted is given by :_

P(x=4)=^{20}C_4(0.28)^4(1-0.28)^{20-4}\\\\=\dfrac{20!}{4!16!}(0.28)^4(0.72)^{16}\\\\=0.155326604912\approx0.16\%

Hence, the probability that in a randomly chosen group of 20 College students, exactly 4 are near-sighted is closest to 16%.

7 0
4 years ago
Solve the following compound inequality: 3<-2x-137.
yarga [219]

Answer:

Step-by-step explanation:

Here you go mate

PEDMAS

STEP 1

3<-2x-137  equation

STEP 2

3<-2x-137  simplify by reversing equation

-2x-137>3

STEP 3

-2x-137>3   simplify

-2x>140

step 4

-2x>140   look for a number that can divide the two numbers like 2

-2x /-2 > 140 /-2

1>-70

answer

x>-70

3 0
3 years ago
Solve for b:<br> a/b = c
irina [24]


Multiply each term by
b

and simplify.
a = cb

Rewrite the equation as
cb = a
Divide each term by
c

and simplify.
b = a/ c
4 0
3 years ago
Read 2 more answers
Regroup. Write the missing numbers. 40 tens = ___ hundreds
Genrish500 [490]

Write the missing numbers. 40 tens = ___ hundreds

40 * 10 = 400

so:

40 tens = 4 hundreds

7 0
1 year ago
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