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3 years ago

What’s the correct answer for this?

Mathematics

1 answer:

Phoenix [80]3 years ago

6 0

Answer:

Step-by-step Explanation:

P(A or B) = P(A)+P(B)-P(A and B)

Now

Putting the givens

0.68 = 0.2 + P(B) - 0.12

P(B) = 0.68 - 0.2 +0.12

P(B) = 0.6

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How many seamstresses would be needed to sew thirty-six seams in two hours?

VashaNatasha [74]

Answer:

Six.

Step-by-step explanation :

Each seamstress can sew one seam in twenty minutes, or 3 in an hour, or 6 in two hours. 150

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3 years ago

Read 2 more answers

Help me with this problem !!!!!!!!!!

Mamont248 [21]

Answer:

Hi, your answer is y= $-\frac{1}{2} x$ -3

Step-by-step explanation:

We will use the slope-intercept formula which is

$\frac{y2-y1}{x2-x1}$

We will use two points in this case I'll use

(-2,-2) and (-8,1)

$\frac{1-(-2)}{-8-(-2)}$ = $-\frac{3}{6}$ which can be simplified as $-\frac{1}{2}$

Your Y will be -3

which your final answer will be y=-1/2x-3

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3 0

3 years ago

insurance company checks police records on 559 accidents selected at random and notes that teenagers were at the wheel in 91 of

ss7ja [257]

Answer: $(13.22\%,\ 19.34\%)$

Step-by-step explanation:

Given : Sample space : n= 559

Sample proportion : $\hat{p}=\dfrac{91}{559}=0.162790697674\approx0.1628$

$=16.28\%$

Significance level : $\alpha= 1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.96$

Confidence level for population proportion:-

$\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\\\\=0.1628\pm (1.96)\sqrt{\dfrac{0.1628(1-0.1628)}{559}}\\\\=0.1628\pm0.030604971367\\\\\approx 0.1628\pm0.0306=(0.1322,\ 0.1934)=(13.22\%,\ 19.34\%)$

Hence, 95% confidence interval for the percentage of all auto accidents that involve teenage drivers.= $(13.22\%,\ 19.34\%)$

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3 years ago

The measure of one base angle of an isosceles triangle is 35 degrees. What is the measure of the vertex angle?

Elis [28]

Answer:

110 degrees

Step-by-step explanation:

The measures of the two base angles of an isosceles triangle are the same so 180 - 2(35) = 110 which is the vertex angle.

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3 years ago

A. (x, y) → (x, y + 4)

Harrizon [31]

X444444xxx-xxxx444468

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2 years ago