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Alina [70]
3 years ago
15

You randomly select one card from a​ 52-card deck. Find the probability of selecting a red three or a black two.

Mathematics
1 answer:
sammy [17]3 years ago
7 0
The answer is 2/52 or if you want a rounded up answer it is 1/26
You might be interested in
Determine the point on the graph of the linear equation 2x + 5y = 19, whose ordinate is 1 1/2 times its abscissa.
rosijanka [135]

Answer:

(2, 3)

Step-by-step explanation:

2x + 5y = 19

5y = -2x + 19

y = -\frac{2}{5} x + \frac{19}{5}

P(abscissa, ordinate)

P(x, 1.5x)

P(2, 3)

3 = -\frac{2}{5} (2) + \frac{19}{5}

3 = -\frac{4}{5} + \frac{19}{5}

3 = 15/5

3 = 3

8 0
3 years ago
A manufacturer of potato chips would like to know whether its bag filling machine works correctly at the 410 gram setting. It is
frozen [14]

Answer:

The decision rule for rejecting the null hypothesis is t < -1.721

Step-by-step explanation:

A manufacturer of potato chips would like to know whether its bag filling machine works correctly at the 410 gram setting. It is believed that the machine is underfilling the bags.

At the null hypothesis, we test if the mean weight of the bag is the desired value of 410, that is:

H_0: \mu = 410

At the alternate hypothesis, we test if the bag is underfilled, that is, the mean weight is below the desired value, so:

H_0: \mu < 410

Type of test:

As we test if the mean is less than a value, we have a left-tailed test.

We have the standard deviation for the sample, which means that the t-distribution is used.

We have 22 - 1 = 21 degrees of freedom, with a level of significance of 0.05.

Using a calculator, the critical value is t_c = -1.721

Determine the decision rule for rejecting the null hypothesis.

We reject the null hypothesis if the test statistic is less than the critical value, so the decision rule for rejecting the null hypothesis is t < -1.721

3 0
3 years ago
How do I find slope?
Korolek [52]
To find the slope in the graph you need to find two perfect points on the line then count how many times you went up which is the y over how many times you go right which is the x its called the rise/run. To find the slope in the equation use the formula y2-y1/x2-x1.
7 0
3 years ago
Read 2 more answers
If 3 inches represents 90 miles on a scale drawing, how long would a line segment be that represents 240 miles?
DerKrebs [107]

Answer:

8 inches

Step-by-step explanation:

90 miles -------------> represented by 3 inches

1 mile -------------> represented by 3/90 inches

240 miles ----------> represented by 3/90 x 240 = 8 inches

6 0
3 years ago
Work out the equation of the straight line that passes through (2, 3) and
tatiyna

Answer:

Y=5X-7

Step-by-step explanation:

(2,3)

Y-Yo=m(X-Xo)

Y-3=m(X-2)

Y-3=mX-2m

Y=mX-2m+3

(5,18)

18=m(5)-2m+3

18=5m-2m+3

18=3m+3

18-3=3m

15=3m

15/3=m

5=m

Y=5X-2(5)+3

Y=5X-10+3

Y=5X-7

4 0
1 year ago
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