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Sever21 [200]
3 years ago
7

Suzy decided to purchase 3 points in order to lower her interest rate on her 125,000 mortgage

Mathematics
1 answer:
Sonbull [250]3 years ago
8 0

Answer: $3750

Step-by-step explanation:

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Change each fraction or mixed number to a percent. a. 2⁄5 b. 7⁄20 c. 111⁄16 d. 141⁄4
tino4ka555 [31]

a. 2⁄5 = 0.4 = 40%

b. 7⁄20 = 0.35 = 35%

c. 11 1⁄16 = 6.9375  ≈694%

d. 141⁄4 = 35.25 = 3525%

6 0
3 years ago
Simplify the expression below:<br> (-5x² + 2) - (4x² – 5x - 9)
lozanna [386]

Answer:

-9x² + 5x + 11

Step-by-step explanation:

-5x² + (-4x²) + 5x + 2 + 9

-9x² + 5x + 11

3 0
2 years ago
Test the claim that the proportion of people who own cats is significantly different than 80% at the 0.2 significance level. The
sattari [20]

Answer:

C. H0 : p = 0.8 H 1 : p ≠ 0.8

The test is:_____.

c. two-tailed

The test statistic is:______p ± z (base alpha by 2) \sqrt{\frac{pq}{n} }

The p-value is:_____. 0.09887

Based on this we:_____.

B. Reject the null hypothesis.

Step-by-step explanation:

We formulate null and alternative hypotheses as  proportion of people who own cats is significantly different than 80%.

H0 : p = 0.8 H 1 : p ≠ 0.8

The alternative hypothesis H1 is that the 80% of the  proportion is different and null hypothesis is , it is same.

For a two tailed test for significance level = 0.2 we have critical value  ± 1.28.

We have alpha equal to 0.2  for a two tailed test . We divided alpha with 2 to get the answer for a two tailed test. When divided by two it gives 0.1 and the corresponding value is ± 1.28

The test statistic is

p ± z (base alpha by 2) \sqrt{\frac{pq}{n} }

Where p = 0.8 , q = 1-p= 1-0.8= 0.2

n= 200

Putting the values

0.8 ± 1.28 \sqrt{\frac{0.8*0.2}{200} }

0.8 ± 0.03620

0.8362, 0.7638

As the calculated value of z lies within the critical region  we reject the null hypothesis.

8 0
3 years ago
Place the indicated product in the proper location on the grid. [4 - (3c - 1)] [6 - 3c -1)]
mash [69]
[4 - (3c - 1)][6 - (3c - 1)]
[4 - 3c + 1][6 - 3c + 1]
[-3c + 4 + 1][-3c + 6 + 1]
[-3c + 5][-3c + 7]
-3c[-3c + 7] + 5[-3c + 7]
-3c[-3c] - 3c[7] + 5[-3c] + 5[7]
9c² - 21c - 15c + 35
9c² - 36c + 35
7 0
3 years ago
What's the mean median and range of 7, 1, 1, 7, 1, 4, 1??
Alekssandra [29.7K]

Answer:

Mean is 3, median is 1, and range is 6

Step-by-step explanation:

Im a smart dude with a great attitude

6 0
3 years ago
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