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kherson [118]
3 years ago
8

I need help with this question about Triangle Congruence Postulates...

Mathematics
1 answer:
Pavel [41]3 years ago
7 0
In order to prove that the triangles are congruent by SAS (Side Angle Side) you would have to assume that side AB and AD are equal (isosceles triangle) so that the base angles, angle ABC and angle ADC are congruent. So once you know that two sides and the angle in between them are indeed congruent you can reason for SAS.
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I need help NOW please!!!
pishuonlain [190]

Answer:

B)34

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
of 320 consumers polled, some purchase blu-ray movies, some only purchase movies on dvd, and some do both. if 300 people polled
Helga [31]

Answer:

20 people only buy dvds.

Step-by-step explanation:

There are two groups in this problem. One group of people that buys dvds and one that buys blu rays. The total amount of people who buy blu rays is 300, but there's an intersection between the groups and the size of this is 280 people who actually buy both. In order to find out how many people only buy DVDs we first need to figure out how many only buy blu-rays. That is:

people who only buy blu rays = people who buy blu rays - people who buys blu rays and dvds

people who only buy blu rays = 300 - 280 = 20

We can now calculate the amount of people who only buy dvds and that is:

people who only buy dvds =total amount of people - ( people who only buy blu rays + people who buy both)

people who only buy dvds = 320 - (20 + 280) = 320 - 300 = 20 people

3 0
3 years ago
The effect of a monetary incentive on performance on a cognitive task was investigated. The researcher predicted that greater mo
riadik2000 [5.3K]

Answer:

1) H_0:\mu_5=\mu_{25}=\mu_{50}

2) H_a:\mu_{50}>\mu_{25}>\mu_{5}

3) A Type I error happens when we reject a null hypothesis that is true. In this case, that would mean that the conclusion is that there is evidence to support the claim that the greater the incentive, the more puzzles are solved, but that in reality there is no significant difference.

4) A Type II error happens when a false null hypothesis is failed to be rejected. In this case, that would mean that there is no enough evidence to support the claim that the greater the incentive, the more puzzles are solved, but in fact this is true.

5) The probability of a Type I error is equal to the significance level, as this is the chance of having a sample result that will make the null hypothesis be rejected.

Step-by-step explanation:

As the claim is that the greater the incentive, the more puzzles were solved, the null hypothesis will state that this claim is not true. That is that there is no significant relation between the incentive and the amount of puzzles that are solved. In other words, the mean amount of puzzles solved for the different incentives is equal (or not significantly different):

H_0:\mu_5=\mu_{25}=\mu_{50}

The research (or alternative hypothesis) is that the greater the incentive, the more puzzles were solved. That means that the mean puzzles solved for an incentive of 50 cents is significantly higher than the mean mean puzzles solved for an incentive of 25 cents and this is significantly higher than the mean puzzles solved for an incentive of 5 cents.

H_a:\mu_{50}>\mu_{25}>\mu_{5}

A Type I error happens when we reject a null hypothesis that is true. In this case, that would mean that the conclusion is that there is evidence to support the claim that the greater the incentive, the more puzzles are solved, but that in reality there is no significant difference.

A Type II error happens when a false null hypothesis is failed to be rejected. In this case, that would mean that there is no enough evidence to support the claim that the greater the incentive, the more puzzles are solved, but in fact this is true.

The probability of a Type I error is equal to the significance level, as this is the chance of having a sample result that will make the null hypothesis be rejected.

4 0
3 years ago
The amount after 8years will be what
patriot [66]
P=5000
t=8
r=7%=0.07
n=4
Now all of this have to be substituted to the formula
A=5000(1+0.07/4)^(4*8)=5000(1+0.07/4)³²=8711.07
8 0
3 years ago
Determine the intercepts of the line Y+5=2(x+1)?
inn [45]

Answer:

The x intercept is (3/2,0)

The y intercept is (0,-3)

Step-by-step explanation:

Y+5=2(x+1)

To find the x intercept, set y =0 and solve for x

0+5=2(x+1)

Distribute

5 = 2x+2

Subtract 2 from each side

5-2 =2x +2-2

3 =2x

Divide by 2

3/2 =x

The x intercept is (3/2,0)

To find the y intercept, set x =0 and solve for y

y+5=2(0+1)

y+5 = 2*1

y+5=2

Subtract 5 from each side

y+5-5=2-5

y=-3

The y intercept is (0,-3)

7 0
3 years ago
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