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3 years ago

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Round 68.09 to 2 Sf please

1 answer:

marta [7]3 years ago

4 0

68
I hope you understand this

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MATH HELP 15 POINTS <br> SLOPES!!!!!! ANSWER ALL 3 QUESTIONS

8090 [49]

Question 1.
First solve for slope: $\frac{0-8}{8-0} = \frac{-8}{8} = -1$
Point-slope formula is: $y2 - y1 = m(x - x1)$ where m = slope.
Plug in values for PS form: $y - 0 = -1(x - 8)$
So the answer is Choice 2.

Question 2.
Choice D.
Points given: (-10, -7) and (3, -7)
Both y -intercepts are equivalent to -7

Question 3.
Choice A.
Points given: (2, 4) and (2, -7)
Both x - intercepts are equivalent to 2

3 0

3 years ago

Read 2 more answers

C^5 x c can you help please

spayn [35]

C^6, because you have to add the exponents together if you have a common base.

4 0

3 years ago

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ga political candidate has asked you to conduct a poll to determine what percentage of people support her. if the candidate only

Vedmedyk [2.9K]

Answer: 151

Step-by-step explanation:

if prior population proportion is unknown , then the formula is used to find the sample size :

$n=0.25(\frac{z_{\alpha/2}}{E})^2$

, where $z_{\alpha/2}$ = Two tailed critical value for significance level of $\alpha.$

E = Margin of error.

Given : margin of error = 8%= .08

For 95% confidence level , two tailed critical value = 1.96

Now, the required sample size :

$n=0.25(\frac{1.96}{0.08})^2\\\\=0.25(24.5)^2\\\\=150.0625\approx151$

Hence, the size of the sample needed = 151.

7 0

3 years ago

A toddler is allowed to dress himself on Mondays, Wednesdays, and Fridays. For each of his shirt, pants, and shoes, he is equall

avanturin [10]

Answer:

0.0286 = 2.86% probability that today is Monday.

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Dressed correctly

Event B: Monday

Probability of being dressed correctly:

100% = 1 out of 4/7(mom dresses).

(0.5)^3 = 0.125 out of 3/7(toddler dresses himself). So

$P(A) = 0.125\frac{3}{7} + \frac{4}{7} = \frac{0.125*3 + 4}{7} = \frac{4.375}{7} = 0.625$

Probability of being dressed correctly and being Monday:

The toddler dresses himself on Monday, so (0.5)^3 = 0.125 probability of him being dressed correctly, 1/7 probability of being Monday, so:

$P(A \cap B) = 0.125\frac{1}{7} = 0.0179$

What is the probability that today is Monday?

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.0179}{0.625} = 0.0286$

0.0286 = 2.86% probability that today is Monday.

4 0

3 years ago

What is the area of a circle if the diameter is 16 millimeters?

Pavlova-9 [17]

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▹ Answer

<em>A ≈ 201.06 mm²</em>

▹ Step-by-Step Explanation

A = πr²

Radius = 1/2d

Radius = 1/2(16)

Radius = 8

Substitute:

A = π8²

A ≈ 201.06 mm²

Hope this helps!

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7 0

3 years ago

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