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zaharov [31]
3 years ago
13

- what is the answer to 3t^2+11t-6

Mathematics
1 answer:
Wittaler [7]3 years ago
8 0
I think the answer maybe 9t+5x
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Ruby works in a bike shop where she makes repairs. She needs to order tires for bikes and quads, which have different kinds of t
valkas [14]

Each bike has two tires, while each quad has four tires. Therefore the number of tires Ruby has to other is given by the number of tires used by the bikes added by the number of tires used by the quads. This is shown on the expression below:

\text{tires}=2\cdot b+4\cdot q

5 0
10 months ago
Is 15 ft, 36 ft, 39 ft a right triangle?
Nina [5.8K]
Use the pythagoream theorem to check. a^2+b^2=c^2

a=15 b=36 c= 39

225+1296=1521

The equation is true so it is a right triangle.
7 0
3 years ago
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Estimate 73% of 120 <br><br> Thanks if you help!
xxMikexx [17]

Answer:

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answer:-87.6

3 0
3 years ago
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A professor finds that the average SAT score among all students attending his college is 1150 ± 150 (μ ± σ). He polls his class
solniwko [45]

Answer:

Step-by-step explanation

Hello!

Be X: SAT scores of students attending college.

The population mean is μ= 1150 and the standard deviation σ= 150

The teacher takes a sample of 25 students of his class, the resulting sample mean is 1200.

If the professor wants to test if the average SAT score is, as reported, 1150, the statistic hypotheses are:

H₀: μ = 1150

H₁: μ ≠ 1150

α: 0.05

Z= \frac{X[bar]-Mu}{\frac{Sigma}{\sqrt{n} } } ~~N(0;1)

Z_{H_0}= \frac{1200-1150}{\frac{150}{\sqrt{25} } } = 1.67

The p-value for this test is  0.0949

Since the p-value is greater than the level of significance, the decision is to reject the null hypothesis. Then using a significance level of 5%, there is enough evidence to reject the null hypothesis, then the average SAT score of the college students is not 1150.

I hope it helps!

7 0
3 years ago
What will happen to the mean if the outlier gets removed
sveticcg [70]
I think it will decrease
4 0
3 years ago
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