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REY [17]
3 years ago
15

What is 50.00 minus 30%?

Mathematics
1 answer:
Lelechka [254]3 years ago
7 0
50.00 - 30 % = 35
Because ⬇
50.00( 50.00 × 3 ÷ 100)

50.00 - 15.00 = 35.00

That's how I found out that "50.00 - 30% " was equalling to '35' (or you can put '35.00'
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What value of x makes the equation true? <br> A.1<br> B.-5<br> C.-1<br> D.7
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I THINK THE ANSWER IS D.

5 0
3 years ago
A lathe is set to cut bars of steel into lengths of 6 cm. The lathe is considered to be in perfect adjustment if the average len
Gnom [1K]

Answer:

t=\frac{5.97-6}{\frac{0.4}{\sqrt{93}}}=-0.723    

E. -0.723

df=n-1=93-1=92  

p_v =2*P(t_{(92)}  

Since the p value is very high we don't have enough evidence to conclude that the true mean for the lengths is different from 6 cm.

Step-by-step explanation:

Information provided

\bar X=5.97 represent the sample mean for the length

s=0.4 represent the sample standard deviation

n=93 sample size  

\mu_o =6 represent the value that we want to test

\alpha=0.05 represent the significance level

t would represent the statistic  

p_v represent the p value for the test

System of hypothesis

We need to conduct a hypothesis in order to check if the lathe is in perfect adjustment (6cm), then the system of hypothesis would be:  

Null hypothesis:\mu = 6  

Alternative hypothesis:\mu \neq 6  

since we don't know the population deviation the statistic is:

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

Replacing in formula (1) we got:

t=\frac{5.97-6}{\frac{0.4}{\sqrt{93}}}=-0.723    

E. -0.723

P value

The degrees of freedom are given by:

df=n-1=93-1=92  

Since is a two tailed test the p value would be:  

p_v =2*P(t_{(92)}  

Since the p value is very high we don't have enough evidence to conclude that the true mean for the lengths is different from 6 cm.

5 0
3 years ago
What is -7+(-2)? I got nine but I'm not sure if that's correct.
horrorfan [7]
It's actually (-9)... think of it as a hot air balloon, the positivies being balloons and the negatives being sandbags or weights.
You have 7 sandbags/weights and add 9 more sandbags/weights, causing u to go lower, therefore, *negative* 9
Hope that helped! :))
8 0
3 years ago
Read 2 more answers
24divided( -4 ) =<br> what is the answer
Tcecarenko [31]

Answer:

-6

Step-by-step explanation:

Please mark as Brainliest! :)

8 0
3 years ago
Read 2 more answers
The point (2, 3) is on the line given by which equation below?
love history [14]
Plug in the points and see if y and x are equal to each other.

(2,3)
y= x-1
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y=3x
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y=x+1
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y=-3x
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y=x+1 <em>is the answer.
</em>

I hope this helps!
~kaikers


5 0
3 years ago
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