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3 years ago

Assume a standard deck of 52 cards is being used. Find the possible way 2 black cards can be chose

1 answer:

7 0

We know there are 4 suites the deck can be divided into, and two of the 4 are black. So you divide 2/4, and get 1/2. So the probability that a black card will be chosen is 1/2.

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Please help me asap with this question

Luden [163]

Answer:

$(-2a, -2b)$

Step-by-step explanation:

Using the midpoint formula, the coordinates of $E$ are $\left(\frac{-3a-a}{2}, \frac{b-5b}{2} \right)=(-2a, -2b)$ .

7 0

1 year ago

Please helpppp I’m not sure how to solve

Nesterboy [21]

Answer:

If a is 1.. we substitute one in every a in g(a)

4 * 1 + 16

4+ 16 = 20

g(a)= 20

f(20)

-16 + 20 = 4

and 4/4 = 1

so f (g (a)) = a

Step-by-step explanation:

6 0

3 years ago

Are you smarter than a second grader? A random sample of 60 second graders in a certain school district are given a standardized

denis23 [38]

Answer:

We accept H₀ , we do not have enought evidence for rejecting H₀

Step-by-step explanation:

Normal Distribution

sample size n = 60

standard deviation σ = 15

1.Hypothesis Test : Is a one tailed-test on the right

H₀ null hypothesis μ₀ = 50

Hₐ alternative hypothesis μ₀ > 50

2.-We will do the test for a significance level α = 0,01 tht means for a 99% interval of confidence

then z(c) = 2.32

3.- We compute z(s)

z(s) = [ ( μ - μ₀ ) /( σ/√n ) ⇒ z(s) = ( 2 * √60 ) / 15

z(s) = 15.49/15 ⇒ z(s) = 1.033

4.- We compare values of z(c) and z(s)

z(s) < z(c) 1.033 < 2.32

z(s) is in the acceptance region so we accept H₀ , we do not have enough evidence for rejecting H₀

6 0

3 years ago

Triangle ABC is shown below. Using a compass and straightedge, construct the dilation of ABC centered at B with a scale factor o

qaws [65]

Triangle ABC would remain the same because a dilation generally preserves the measure of an angle.

<h3>What is scale factor?</h3>

A scale factor simply refers to a ratio of two (2) corresponding side lengths or diameter in two (2) similar geometric figures such as triangles.

In this exercise, you're required to construct a dilation of triangle ABC that is centered at B with a scale factor of 2 by using a compass and straightedge.

In conclusion, triangle ABC would remain the same because a dilation generally preserves the measure of an angle.

Read more on scale factor here: brainly.com/question/2826496

#SPJ1

4 0

2 years ago

Name the angle in (4) different ways.

MaRussiya [10]

Answer:

An angle can be named in different ways:

•by a number or letter written inside the angle.

•by the name of the vertex.

•by the vertex and a point on each ray.

3 0

3 years ago