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GarryVolchara [31]
3 years ago
6

Are the triangles below similar to eachother?

Mathematics
1 answer:
Nookie1986 [14]3 years ago
7 0

Answer:

B.

Step-by-step explanation:

Because 14/2 is 7

10/5 is 2 as well

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The students in Mr. Bhatia's
vodomira [7]

Answer:

Isabel's bee rounds to 0.8 inches and Pablo's bee round to 0.5 inches..

Step-by-step explanation:

Look at the attached picture.

The students in Mr. Bhatia's  class measure the length of four bees.

If we round the lengths to the nearest tenth we get:

Isabel’s bee rounds to 0.8 inches

Pablo’s bee rounds to 0.5 inches

Wendi’s bee rounds to 0.6 inches

Brett’s bee rounds to 0.7 inches

This shows that Isabel's bee rounds to 0.8 inches and Pablo's bee round to 0.5 inches..

6 0
3 years ago
What’s the answer to 8-(-4)
mash [69]

Answer:

+ 12

Step-by-step explanation:

8 - (- 4) = 8 + 4 = 12

8 0
3 years ago
Read 2 more answers
Find each quotient. a. 5 ÷ 1/10 B. 5 ÷ 3/10 C. 5 ÷ 9/10
AnnyKZ [126]

Answer:

1. 50

2. 16.6666666667=16.7

3. 5.55555555556=5.6

Step-by-step explanation:

1. 5/0.1=50

2. 5/0.3=16.6666666667=16.7

3. 5/0.9=5.55555555556=5.6

3 0
3 years ago
Read 2 more answers
A newspaper published an article about a study in which researchers subjected laboratory gloves to stress. Among 225 vinyl? glov
romanna [79]

Answer:

a)

H₀: ρ₁ ≤ ρ₂

H₁: ρ₁ > ρ₂

b)

Z= \frac{('p_{1} - 'p_{2}) - (p_{1} - p_{2})}{\sqrt{'p(1-'p)[\frac{1}{n_1} + \frac{1}{n_2} ]} } ≈ N(0;1)

c)

p-value < .00001

d)

Reject the null hypothesis.

The population proportion vinyl gloves that leak viruses is greater than the population proportion of latex gloves that leak viruses.

Step-by-step explanation:

Hello!

The objective is to test if the population proportion of vinyl gloves that leak viruses (population 1) is greater then the population proportion of latex gloves that leak viruses (population 2).

Sample 1 (Vinyl)

n₁= 225

Sample proportion 'ρ₁= 0.60

Sample 2 (Latex)

n₂= 225

Sample proportion 'ρ₂= 0.09

Pooled proportion: 'ρ= (x₁+x₂)/(n₁+n₂)= ( 'ρ₁ + 'ρ₂)/2= (0.60 + 0.09)/2= 0.345 ≅0.35

The hypothesis is:

H₀: ρ₁ ≤ ρ₂

H₁: ρ₁ > ρ₂

α: 0.05

The statistic to use is a pooled Z

Z= \frac{('p_{1} - 'p_{2}) - (p_{1} - p_{2})}{\sqrt{'p(1-'p)[\frac{1}{n_1} + \frac{1}{n_2} ]} } ≈ N(0;1)

The critical region is one-tailed to the right (positive), the critical value is:

Z_{1-\alpha } = Z_{0.95} = 1.64

If Z ≥ 1.64, you will reject the null hypothesis.

If Z < 1.64, you will not reject the null hypothesis.

Z= \frac{(0.6 - 0.09) - (0}{\sqrt{0.35(1-0.35)[\frac{1}{225} + \frac{1}{225} ]} } = 11.34

Since the calculated Z- value is greater than the critical value, the decision is to reject the null hypothesis. The population proportion vinyl gloves that leak viruses is greater than the population proportion of latex gloves that leak viruses.

P-value approach:

p-value < .00001

If you compare with the level of signification, you reach the same decision.

I hope it helps!

8 0
3 years ago
Solve
liraira [26]

Answer:

y - 3 = (1/2)(x - 4)

Step-by-step explanation:

The graph is hard to read, but we can make assumptions about the x- and y-values shown.  The y-intercept appears to be (0, 1) and the blue dot appears to be (4, 3).  Let's try finding the equation of the line using this assumed data:

The point-slope equation is y - k = m(x - h), where (h, k) is a point on the line and m is the slope of the line.

We need the slope of the line.  Recall that m = rise/run.  Going from (0, 1) to (4, 3), x (the 'run') increases by 4 and y (the 'rise') increases by 2.  Thus, the slope is m = rise/run = 2/4, or 1/2.

Substituting the known values into the point-slope equation y - k = m(x - h), we get:

y - 3 = (1/2)(x - 4)

7 0
3 years ago
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