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3 years ago

13

What is the length of the tunnel?

1 answer:

s344n2d4d5 [400]3 years ago

3 0

Is 1,030 m long (3,380ft)

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At a winery, 40 grapes are needed to make 2 glass of nine . How much grapes are needed make 10 glasses of wineً??

xxMikexx [17]

40 / 2 = 20....if 40 grapes make 2 glasses, then 20 grapes make 1 glass.

so for 10 glasses
20 * 10 = 200 grapes are needed <==

7 0

4 years ago

Read 2 more answers

Find the value of x please

Natasha_Volkova [10]

Answer:

x=70

Step-by-step explanation:

The value of x is 70 because this triangle is isosceles, meaning that there are two congruent sides and two congruent angles (which are the base angles). x is one of the base angles, 70º is the other base angle's measurement, so x=70.

8 0

3 years ago

Community college students survey students at their college and ask, "Have you met with a counselor to develop an educational pl

UkoKoshka [18]

Answer:

The 90% CI for p is (0.53, 0.83)

Step-by-step explanation:

We have to develop a 90% confidence interval for the proportion of all students at the college that have met with a counselor to develop an educational plan.

We have a sample of size 25, where the sample proportion is:

$p=X/n=17/25=0.68$

The critical value of z for a 90% CI is z=1.645.

The margin of error is then:

$E=z\cdot\sqrt{\dfrac{p(1-p)}{n}}=1.645*\sqrt{\dfrac{0.68*0.32}{25}}=1.645*\sqrt{0.008704}=1.645*0.093\\\\\\E=0.15$

Then, the lower and upper bound of the confidence interval are:

$LL=\hat p-E=0.68-0.15=0.53\\\\UL=\hat p+E=0.68+0.15=0.83$

The 90% CI for p is (0.53, 0.83)

8 0

3 years ago

1. Determine the following:

vichka [17]

Answer:

v=d/t

v=340km/85km/h

v=4 km

I hope this helps you

3 0

3 years ago

I need to know what equals y

inn [45]

Since a^2 - b^2 = 1, the value of y = 1 because x=1 and 1^2 - 1^2 = 0

5 0

3 years ago