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ValentinkaMS [17]
2 years ago
13

A new shoe comes in two colors,black or red,and in sizes 5 to 12,including half sizes.If a pair of the shoes is chosen at random

for a store display,what is the probability it will be red and size 9 or larger?
Mathematics
1 answer:
Dima020 [189]2 years ago
5 0
Less then 50% thats foshow
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Adrian purchases 6 tubes of paint and 3 paintbrushes at a craft store. Each tube of paint costs $2.50 and each paintbrush costs
Airida [17]

Answer:

$14.50

Step-by-step explanation:

6 x $2.50 = $15.00

3 x $0.50 = $1.50

$15.00 + $1.50 = $16.50

$16.50 - $2.00 = $14.50

8 0
3 years ago
Read 2 more answers
Thickness measurements of ancient prehistoric Native American pot shards discovered in a Hopi village are approximately normally
storchak [24]

Answer:

a) 0.1587

b) 0.0475

c) 0.7938

Step-by-step explanation:

Let's start defining our random variable.

X : ''Thickness (in mm) of ancient prehistoric Native American pot shards discovered in a Hopi village''

X is modeled as a normal random variable.

X ~ N(μ,σ)

Where μ is the mean and σ is the standard deviation.

To calculate all the probabilities, we are going to normalize the random variable X.

We are going to call to the standard normal distribution ''Z''.

[(X - μ) / σ] ≅ Z

We normalize by subtracting the mean to X and then dividing by standard deviation.

We can find the values of probabilities for Z in a standard normal distribution table.

We are going to call Φ(A) to the normal standard cumulative distribution evaluated in a value ''A''

a)

P(X

P(ZΦ(-1) = 0.1587

b)

P(X>7)=P(\frac{X-4.5}{1.5}>\frac{7-4.5}{1.5})

P(Z>1.666)=1-P(Z\leq 1.666)=

1 - Φ(1.666) = 1 - 0.9525 = 0.0475

c)

P(3

P(-1 Φ(1.666) - Φ(-1) = 0.9525 - 0.1587 = 0.7938

8 0
3 years ago
Expression tha have the same vaule
Vedmedyk [2.9K]
I don't know if this is the answer that you are looking for, but would the answer be all solutions?
6 0
3 years ago
Please help asap! (:
MAXImum [283]
Hello!

You can only add variables with the same base and exponent

8u^3 + 4u^3 = 12u^3
8u^2 + 0 = 8u^2
0 + -6u = -6u
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Put the sums together

12u^3 + 8u^2 - 6u + 9

The answer is D) 12u^3 + 8u^2 - 6u + 9

Hope this helps!

6 0
3 years ago
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Identify an equation in slope-intercept form for the line parallel to y = -3x + 7
melisa1 [442]
Correct Answer is B!!!
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