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Maurinko [17]
3 years ago
9

A set of 3 pens costs $1.68. At that unit price, how much would 10 pens cost?

Mathematics
2 answers:
PilotLPTM [1.2K]3 years ago
8 0
5 dollars and 60 cents
ArbitrLikvidat [17]3 years ago
4 0
5 dollars and 60 cents
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What is the answe to -2<2x+6=12
nexus9112 [7]
The answer would be -4<x=3
5 0
3 years ago
The sample mean is x = 12.8%. let x be a random variable that represents the percentage of wheat crop in that county lost to hai
katen-ka-za [31]
Given that \bar{x}=12.8\% and \sigma=5.0\%, given that the population mean is \mu=11\% and the sample size is n = 16, the test statistic is given by

z= \frac{\bar{x}-\mu}{\sigma/\sqrt{n}}  \\  \\ = \frac{12.8-11}{5/\sqrt{16}}  \\  \\ = \frac{1.8}{5/4} = \frac{1.8}{1.25}  \\  \\ =1.44 \\  \\ \Rightarrow p-value=p(z\ \textgreater \ 1.44) \\  \\ =1-P(z\ \textless \ 1.44)=1-0.92507 \\  \\ =0.07493

Since the test is a two tailed test, the p-value is 2(0.07493) = 0.14986

Since the p-value is greater the significant level of α = 0.01, thus, we fail to reject the null hypothesis and conclude that there is no sufficient evidence that <span>the percentage of wheat crop lost to hail in that county is different from the national mean of 11%</span>.
8 0
3 years ago
Solve for x. 3x+11=9x-14
iVinArrow [24]

Answer:

x=25/6

Step-by-step explanation:

3x+11=9x-14

11=6x-14

25=6x

x=25/6

8 0
3 years ago
Read 2 more answers
For geometry:(<br><br> i’ll give a brainist!!!
kvasek [131]
<h3>Answer: Angle Q = 133 degrees</h3>

========================================================

Work Shown:

Recall that for any triangle, the three angles always add to 180

P+Q+R = 180

(x+13) + (10x+13) + (2x-2) = 180

(x+10x+2x) + (13+13-2) = 180

13x+24 = 180

13x = 180-24

13x = 156

x = 156/13

x = 12

Now that we know x, we can find the angle measures

  • angle P = x+13 = 12+13 = 25 degrees
  • angle Q = 10x+13 = 10*12+13 = 120+13 = 133 degrees
  • angle R = 2x-2 = 2*12-2 = 24-2 = 22 degrees

As a way to check if we have the right answer or not, we see that,

P+Q+R = 25+133+22 = 180

So the answer is confirmed.

4 0
3 years ago
Please help fast its quiz. :(
dezoksy [38]

Answer:

What is the question??

Thank you for the points

8 0
2 years ago
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