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2 years ago

15

Select the three equations that have

2 answers:

MakcuM [25]2 years ago

3 0

Answer:y+2.9=11, 2y+1=17.2, 28.4-y=20.3

Step-by-step explanation:

disa [49]2 years ago

3 0

Answer:

Select all of the equations that have y=8.1 as the solution. Mark all that apply.

y+2.9=11

12-y=8.1

2y+1=17.2

9+7.2-y=8.2

28.4-y=20.3

Step-by-step explanation:

Select all of the equations that have y=8.1 as the solution. Mark all that apply.

y+2.9=11

12-y=8.1

2y+1=17.2

9+7.2-y=8.2

28.4-y=20.3

You might be interested in

Find 2 consecutive integers that the sum is 149?

disa [49]

Write an equation. To do this, make one integer equal to x, and the other equal to x+1. Set these equal to 149. Your equation should read x+(x+1)=149. Solve. To do this, add the two x's together. Your equation is now 2x+1=149. Get your x's alone. First, subtract 1 from both sides. Now the equation is 148=2x. Divide both sides by 2 to get x alone. You now have x=74. Plug this value back into the original equation to find your value for the other integer, and you have the two integers as 74 and 75. Hope this helps!

7 0

2 years ago

The sample space of a random experiment is {a, b, c, d, e} with probabilities 0.1, 0.1, 0.2, 0.4, and 0.2 respectively. Let A de

antoniya [11.8K]

Answer:

a) $P(A) =P(a)+P(b) +P(c)= 0.1+0.1+0.2 = 0.4$

b) $P(B) =P(c) +P(d)+P(e)=0.2+0.4+0.2=0.8$

c) $P(A') = 1-P(A) =1-0.4=0.6$

d) $P(A \cup B) =0.4 +0.8-0.2 =1.0$

e) The intersection between the set A and B is the element c so then we have this:

$P(A \cap B) = P(c) =0.2$

Step-by-step explanation:

We have the following space provided:

$S= [a,b,c,d,e]$

With the following probabilities:

$P(a) =0.1, P(b)=0.1, P(c) =0.2, P(d)=0.4, P(e)=0.2$

And we define the following events:

A= [a,b,c], B=[c,d,e]

For this case we can find the individual probabilities for A and B like this:

$P(A) = 0.1+0.1+0.2 = 0.4$

$P(B) =0.2+0.4+0.2=0.8$

Determine:

a. P(A)

$P(A) =P(a)+P(b) +P(c)= 0.1+0.1+0.2 = 0.4$

b. P(B)

$P(B) =P(c) +P(d)+P(e)=0.2+0.4+0.2=0.8$

c. P(A’)

From definition of complement we have this:

$P(A') = 1-P(A) =1-0.4=0.6$

d. P(AUB)

Using the total law of probability we got:

$P(A \cup B) =P(A) +P(B)-P(A \cap B)$

For this case $P(A \cap B) = P(c) =0.2$ , so if we replace we got:

$P(A \cup B) =0.4 +0.8-0.2 =1.0$

e. P(AnB)

The intersection between the set A and B is the element c so then we have this:

$P(A \cap B) = P(c) =0.2$

8 0

3 years ago

How is dividing 140 by 20 the same as dividing 1,400 by 200?

Goryan [66]

It's the same only adding a zero at the end

6 0

2 years ago

During the election for class president, 40% of the students voted for Gerardo, 35% of the students voted for Leandro, and 25% o

mrs_skeptik [129]

Answer: 30 students more voted for Gerardo than for Juju.

Explanation:

<u>so 'x' represent the total number of students</u>

<u />

<u>0.40x of the students voted for Gerardo</u>

<u />

<u>0.35x of the students voted for Leandro</u>

<u />

<u>0.25x of the students voted for Juju</u>

<u />

<u>70 students voted for Leandro:</u>

<u />

<u>0.35x = 70 </u>

<u />

<u>by solving we find:</u>

<u />

<u>x = 200 students</u>

<u />

<u>0.40x - 0.25x = (0.40 - 0.25)x = 0.15x = 0.15*200 = 30</u>

<u />

<u />

8 0

2 years ago

Four girls have 5.00 to share equally. How much money will each girl get. Explain

Dennis_Churaev [7]

Answer:

Each will get $1.25

Step-by-step explanation:

5.00/4

= $1.25

5 0

3 years ago