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zavuch27 [327]
4 years ago
9

What's the word form and the number form

Mathematics
1 answer:
KengaRu [80]4 years ago
3 0
Word form: Six hundred thousand plus eighty thousand plus ten
Number form: 600,000+80,000+10
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Slope intercept from a graph
steposvetlana [31]
Answer:

Slope form: y=1x-5

Solution:
Y-y1=m(x-x1) plug in coordinates into formula.
5 0
3 years ago
Brainliest + points!<br><br> Please show your work!
valentinak56 [21]

Find two points where the line intersects with an x and y value that are whole numbers.


The line crosses (0,3) and (-2,-1)


The slope is the change in Y divided by the change in x.

The change in Y is -1 - 3 = -4

The change in x is -2 - 0 = -2


The slope becomes -4 / -2 which simplifies to 2



The answer is D.

7 0
3 years ago
In the Salk vaccine field trial, 400,000 children were part of a randomized controlled double-blind experiment. Just about half
EastWind [94]

Answer:

Step-by-step explanation:

From the given information:

The number of children that were randomly allocated to each vaccination group; n₁ = 200,000

No of polio cases X₁ = 57

Now, in the vaccine group:

the proportion of polio cases is:

\hat p_1 = \dfrac{57}{200000}

=  0.000285

The number of children that were randomly allocated to the placebo group, n₂ = 200,000

No of polio cases X₂ = 142

In the placebo group

the proportion of polio cases is:

\hat p_2 = \dfrac{142}{200000}

Null and alternative hypothesis is computed as follows:

H₀: There is no difference in the proportions of polio cases between both groups.  

H₁: There is a difference in the proportions of polio cases between both groups.

Let assume that the level of significance ∝ = 0.05

The test statistic  can be computed as:

Z = \dfrac{\hat p_1-\hat p_2}{\sqrt{\dfrac{\hat p_1 \hat q_1}{n_1}+ \dfrac{\hat p_2 \hat q_2}{n_2}}}

Z = \dfrac{0.000285-0.000710}{\sqrt{\dfrac{0.000285(1-0.000285)}{200000}+ \dfrac{0.000710(1-0.000710)}{200000}}}

Z = \dfrac{-4.25\times 10^{-4}}{\sqrt{\dfrac{0.000285(0.999715)}{200000}+ \dfrac{0.000710(0.99929)}{200000}}}

Z = - 6.03

P-value =  2P(Z < -6.03)

From the Z - tables

P-value =  2 × 0.0000

= 0.000

We reject the H₀ provided that P-value is very less.

Therefore, we may conclude that there is a difference in the proportions of polio cases between the vaccine group and placebo group not due to chance.

7 0
3 years ago
Please help please please
dezoksy [38]

Look at the picture.

Corresponding angles:

∠1 and ∠5

∠2 and ∠6

∠3 and ∠7

∠4 and ∠8

<h3>Therefore your answer is ∠1 and ∠5</h3>

4 0
3 years ago
about 60000 acres of wetlands are lost each year in the United States. what integer represents the change in wetlands after 4 ye
Black_prince [1.1K]

Answer:

240 000

Step-by-step explanation:

Change in wetlands each year: 60 000 acres

Change in wetlands after 4 years:

60 000 x 4 = 240 000 (acres)

4 0
3 years ago
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