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Nadusha1986 [10]
4 years ago
6

A Weather Forecaster, predicts that their is a 50% chance of rain on Saturday and a 40% chance of rain on Sunday. If these proba

bilities are correct, what is the probability that it will rain both days?
Mathematics
1 answer:
solniwko [45]4 years ago
7 0

Answer:

20% chance.

Step-by-step explanation:

If you do not know the formula, here is a quick intuitive method.

Construct the sample space in a square with 4 divisions

split one side into 1/2 and 1/2 and the other side into

.4 and .6

You can easily see that the day that it will rain on both days is .2 (1/2*.4)

or 20%

You might be interested in
2 cups of raisins for every 12 cups, how many cups if only 8 cups of raisins
svp [43]
Use a proportion.

cups of raisins to cups = cups of raisins to cups

2/12 = 8/x

2x = 8 * 12

x = 4 * 12

x = 48

Answer: 48 cups
4 0
4 years ago
M is the midpoint of RS. R has coordinates (-2,-3) and M has coordinates (1,0). Find the coordinates of S.
Marta_Voda [28]

Answer:

(4,3)

Step-by-step explanation:

Given

R = (-2,-3)

M = (1,0)

Required

Determine the coordinates of S

Midpoint is calculated as:

M(x,y) = \frac{1}{2}(x_1 +x_2,y_1+y_2)

Where:

(x,y) = (1,0)

(x_1,y_1) = (-2,-3)

Substitute these values in the above formula:

(1,0) = \frac{1}{2}(-2 + x_2,-3+y_2)

Multiply through by 2

2 * (1,0) = 2 * \frac{1}{2}(-2 + x_2,-3+y_2)

(2,0) = (-2 + x_2,-3+y_2)

By direct comparison:

2 = -2 + x_2 and 0 = -3 + y_2

Solving for x2

2 = -2 + x_2

x_2 = 2 + 2

x_2 = 4

Solving for y2

0 = -3 + y_2

y_2 = 0 + 3

y_2 = 3

Hence, the coordinates of S is: (4,3)

5 0
3 years ago
twenty two percent of the large pieces of mail that Rachel received this week were magazines and the rest were catalogs. Of the
Monica [59]

Answer:

28%

Step-by-step explanation:

78 x .36 = 28.08

4 0
4 years ago
Read 2 more answers
A computer was on a scale for 2/3 of the original price.If the original price was 900,what was the sale price
iragen [17]

The answer is 600 because 900 divided by 3 is 300 and 300 times 2 is

600!

;)

6 0
4 years ago
What is the scale factor of this dilation?
Montano1993 [528]

Answer:

<h2>Three-fourths</h2>

Step-by-step explanation:

<h3>Triangle XYZ</h3>

XY=10\\ZY=12\\ZX=8\\

<h3>Triangle X'Y'Z'</h3>

X'Y'=7.5\\Z'Y'=9\\Z'X'=6

To find the factor of dilation, we just need to divide the sides of the prime figure with the sides of the original figure.

\frac{10}{7.5}= 1.333333333..\\\frac{12}{9}=1.333333...\\ \frac{8}{6}=1.3333333....

Notice that 1.333333.... is equivalent to 4/3, but the factor of dilation is from the smaller figure to the bigger figure. That means it's the opposite: 3/4.

Therefore, the factor of dilation is three-fourths.

3 0
4 years ago
Read 2 more answers
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