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3 years ago

The slope of the line for both pls

Mathematics

2 answers:

Fofino [41]3 years ago

8 0

Answer:

(-2) and 3.

Step-by-step explanation:

1) if to take two random points on the given line, then A(0;0) and B(1;-2). The required slope is: (-2-0)/(1-0)= -2;

2) like the previous item two points A(0;0) and B(1;3), then the required slope is: (3-0)/(1-0)=3.

GuDViN [60]3 years ago

4 0

Answer:

The answer to number 1 is -2 and the answer to number 2 is 3.

Step-by-step explanation:

Hope that helps!

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Angles EDF and FDH are

storchak [24]

Answer:

Can you get a picture please or more detail...

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3 years ago

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A survey of 1 comma 558 randomly selected adults showed that 522 of them have heard of a new electronic reader. The accompanying

sineoko [7]

Answer with explanation:

Let p be the proportion of adults have heard of the new electronic reader.

Given claim : The accompanying technology display results from a test of the claim that 38% of adults have heard of the new electronic reader.

i.e. $p=0.38$

Then , the set of hypothesis will be :-

$H_0: p=0.38\\\\H_a:p\neq0.38$

Since, the alternative hypothesis is two tailed , so the test is two-tailed test.

Also, it is given that the sample size : $n=1558$

Number of adults showed that they have heard of a new electronic reader=522

So the sample proportion for adults have heard of the new electronic reader : $\hat{p}=\dfrac{522}{1558}\approx0.34$

The test statistic for proportion is given by :-

$z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\\\\Rightarrow\ z=\dfrac{0.34-0.38}{\sqrt{\dfrac{0.38(1-0.38)}{1558}}}\\\\\\\Rightarrow\ z=-3.25279036541\approx-3.25$

By using standard normal distribution table , the P-value for two tailed test corresponds to the obtained z-value = $=0.0011541$

6 0

3 years ago

This is probably very easy but I totally forgot (look at picture)

Darina [25.2K]

Coordinates for new triangle -

P’(-1,1)
Q’(-3,3)
R’(-3,1)

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3 years ago

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To solve work problems, find the portion of the job each person completes in 1 unit of time. The sum of these portions is the po

Gwar [14]

Answer:

4.8 minutes

Step-by-step explanation:

Using the given hint, working together, the amount of floor mopped in 1 minute is ...

1/8 + 1/12 = 3/24 +2/24 = 5/24 . . . . jobs/minute

The reciprocal of that is the rate in terms of minutes per job. Thus the entire job takes 24/5 = 4.8 minutes.

6 0

4 years ago

Hope someone help.me

zvonat [6]

x = r sin θ cos Ф

x² = r² sin² θ cos² Ф

y = r sin θ sin Ф

y² = r² sin² θ sin² Ф

z = r cos θ

z² = r² cos² θ

x² + y² + z²

= r² sin² θ cos² Ф + r² sin² θ sin² Ф + r² cos² θ

= r² sin² θ (cos² Ф + sin² Ф) + r² cos² θ

= r² sin² θ + r² cos² θ

= r² (sin² θ + cos² θ)

= r² √

7 0

3 years ago