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3 years ago

6

For a rollerblading party there are 50 tickets available. Jason buys 6 tickets and Heather buys three times as many as Jason bou

ght. How many tickets are left to be sold?

2 answers:

garik1379 [7]3 years ago

8 0

There should be 26 tickets left.

Dmitry [639]3 years ago

5 0

There are 26 tickets left to be sold.

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Pls someone I need help

Vedmedyk [2.9K]

Answer:

B. Dan walked uphill, then downhill.

Step-by-step explanation:

The place that the slope went up is based on the distance from the starting point, so the distance is up then down. I hope this helped and please mark me as brainliest!

5 0

2 years ago

Which number is an irrational number?

babunello [35]

Answer:

For this case we have by definition, that an irrational number is a number that can not be expressed as a fraction \ frac {a} {b}, where a and b are integers and b is different from zero.

A) , it is rational

B), it is rational

C) , it is rational

D) it is not rational.

Step-by-step explanation:

dddddd its dddd

BESTI ILYSM

3 0

2 years ago

Read 2 more answers

A researcher claims that the variation in the salaries of elementary school teachers is greater than the variation in the salari

guajiro [1.7K]

Answer:

a

The null hypothesis is $H_o : \sigma^2_1 = \sigma^2 _2$

The alternative hypothesis is $H_a : \sigma_1 ^2 > \sigma^2_2$

b

$F_{critical} = 1.8608$

c

$F = 2.9085$

d

The decision rule is

Reject the null hypothesis

e

There is sufficient evidence to support the researchers claim

Step-by-step explanation:

From the question we are told that

The first sample size is $n_1 = 30$

The sample variance for elementary school is $s^2_1 = 8324$

The second sample size is $n_2 = 30$

The sample variance for the secondary school is $s^2_2 = 2862$

The significance level is $\alpha = 0.05$

The null hypothesis is $H_o : \sigma^2_1 = \sigma^2 _2$

The alternative hypothesis is $H_a : \sigma_1 ^2 > \sigma^2_2$

Generally from the F statistics table the critical value of $\alpha = 0.05$ at first and second degree of freedom $df_1 = n_1 - 1 = 30 - 1 = 29$ and $df_2 = n_2 - 1 = 30 - 1 = 29$ is

$F_{critical} = 1.8608$

Generally the test statistics is mathematically represented as

$F = \frac{s_1^2 }{s_2^2}$

=> $F = \frac{8324 }{2862}$

=> $F = 2.9085$

Generally from the value obtained we see that $F > F_{critical }$ Hence

The decision rule is

Reject the null hypothesis

The conclusion is

There is sufficient evidence to support the researchers claim

4 0

2 years ago

Help!! <br> WHAT IS THE VALUE OF Y??

Anna11 [10]

Your answer would be C: 44 degrees.

1. Find the value for the third angle.

We know that two of the angles are y, but we need to find the other angle in order to solve this problem. There is a line connecting off of the angle, so for a moment, lets ignore the triangle and just look at the line.

A line is 180 degrees. That means that if we subtract 88 from 180, we can get the value for the third angle. 180-88=92.

2. Find y.

The total value of all the angles of a triangle is 180 degrees. Lets first find the value of two of the y angles combined. 180-92=88

Since both of the remaining angles are y, that means that they are equal. This means that all we have to do now is divide 88 by 2 to get the value of y. 88/2=44

y=44 degrees

I'm really bad at explaining things, but I hope this helped!

6 0

3 years ago

A third-grade class has 12 girls and 13 boys. A fourth-grade class has 10 boys and 11 girls. When picking teams for PE, one capt

Nuetrik [128]

Probability that the first captain's first pick is a girl = 11/21
Probability that the first captain's second pick is a girl = 12/25

<span>the probability that the first captain will pick two girls before picking any boys = 11/21 x 12/25 = 132/525 = 44/175</span>

5 0

3 years ago