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mariarad [96]
3 years ago
8

There is a bag filled with 3 blue and 5 red marbles.

Mathematics
1 answer:
slava [35]3 years ago
7 0

Answer:

4/7

Step-by-step explanation:

The first time, the probability is 5/8. Then you remove one marble that is red (if you get a red one), so the probability is 4/7.

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Austin is baking apple pies and apple cakes. Each pie takes three times the number of apples as each cake. He plans to make 2 pi
Setler79 [48]
The answer is A cause the X represents the number of apples used in 1 cake and the 3 represents how much more apples it takes for the pie than the cake .
7 0
3 years ago
Which expression is equivalent to 100 in exponential form? A) 102 B) 210 C) 10 × 10 D) 4 × 25
Paul [167]

Answer:

A) 10^2

Step-by-step explanation:

100 is 10 times 10 or 10 to the second power

100 = 10 * 10 = 10 ^2

6 0
3 years ago
Which sentence correctly describes a data set that follows a normal distribution with a standard deviation of 4 and a mean of 14
denis-greek [22]

Answer:

Option (c) is correct.

68% of the data points lie between 10 and 18.

Step-by-step explanation:

Given :  a normal distribution with a standard deviation of 4 and a mean of 14

We have to choose the  sentence that correctly describes a data set that follows a normal distribution with a standard deviation of 4 and a mean of 14.

Since, given 68% data.

We know mean of data lies in middle.

And standard deviation is distribute equally about the mean that is 50% of values less than the mean  and 50% greater than the mean.

So, 68% of data lies

mean - standard deviation = 14 - 4 = 10

mean + standard deviation = 14 + 4 = 18

So, 68% of the data points lie between 10 and 18.

4 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20-%202%20%5Csqrt%7Bx%20%2B%205%7D%20%20%20%20%20%2B%2010%20%3D%20x" id="TexFormula1" title="
umka21 [38]
X=4
After squaring both sides, you get
4(x+5)=x^2-20x+100
Multiply
4x+20=x^2-20x+100
Collect like terms
4x+20-x^2+20x-100=0
Reorder
24x-80-x^2=0
Change signs & Write as difference. You end up with
x^2-4x-20x+80=0
Factor
x-4=0 , x-20=0
4=4 , 0=20
x=4
8 0
3 years ago
Solve the following, what is 10=4y?
Alex777 [14]

Answer:

y=2.5

Step-by-step explanation:

10=4y

4y=10

y=10/4

y=5/2

y=25/10

y=2.5

7 0
3 years ago
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