3 years ago

Mixed radical / restricitoins 5x√6x

Mathematics

1 answer:

valentinak56 [21]3 years ago

5 0

Radical is √30x because it just 5 times 6

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Can someone help me with this question please?

Paladinen [302]

60 movies ------ 100%
9 movies -------- x%
__________________
60*x=9*100%
60x=900% |:60
x=15%

The answer is 15%
:)

7 0

4 years ago

3(5b-1)=5 solve for b 4(3y-1)=20 solve for y

Gnom [1K]

3(5b-1)=5
Get rid of the brackets
15b-3=5
add 3 to both sides of the equation
15b=8
divide both sides of the equation by 15
b=0.53

4(3y-1)=20
12y-4=20
12y=24
y=0.5

7 0

3 years ago

A teacher claims that the proportion of students expected to pass an exam is greater than 80%. To test this claim, the teacher a

erica [24]

Answer:

z=-1.591

Step-by-step explanation:

Null Hypotheses,

$H_0 : p=0.8\\H_a: p>0.80$

So we use z-test for one population proportion (right-tailed test)

According to this informaton, we defined that

$\alpha=0.05$

$z_c=1.64$ (critical value)

So our Rejection region is $R={z:z>1.64}$

$z=\frac{\bar{p}-p_0}{\sqrt{p_0(1-p_0)/n}} = \frac{0.755-0.8}{\sqrt{0.8(1-0.8)/200}}=-1.591$

Not rejection.

6 0

3 years ago

Select all that apply which of the following represent the rule y=x+2?

padilas [110]

Answer:

The first one and the second one.

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Annie's great-grandparents lived in a log cabin with their 3 children. The log cabin had a floor area of 450 square feet. The ce

scoray [572]

Answer:

you would have to multiply 450•7

4 0

3 years ago