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Fed [463]
3 years ago
12

Verify the equation below with each of the values listed for z to find a solution . 3-2z=1/10

Mathematics
2 answers:
ziro4ka [17]3 years ago
8 0

3-2z=\frac{1}{10} \\30-20z=1\\-20z=-29 \\z=\frac{-29}{-20} \Longrightarrow z=\boxed{1.45}

bogdanovich [222]3 years ago
7 0

For this case we have the following equation:

3-2z = \frac {1} {10}

We must find the value of z that represents the solution of the equation:

We follow the steps below:

We multiply by 10 on both sides of the equation:

10 (3-2z) = 1

We apply distributive property to the terms of parentheses;

30-20z = 1

We subtract 30 from both sides of the equation:

-20z = 1-30\\-20z = -29

We divide between -20 on both sides of the equation:

z = \frac {-29} {- 20}\\z = \frac {29} {20}\\z = 1.45

If we substitute the value of z in the original equation, equality is satisfied.

Answer:

z = 1.45

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We want to see how we can model the difference: -8 - 3 + 3

The correct option is D:

"add 3 positive counters and 3 negative counters"

We know that Marcus starts with 8 negative counters, corresponding to the first term in our difference.

Now, let's study the math of our expression.

-8 - 3 + 3

Remember that we can perform the operation in any order we want, so we can write this as:

-8 + (-3 + 3)

Notice that the thing inside the parentheses is equal to zero, so we have:

- 8 + (-3 + 3) = -8

So to not change the value, we add 3 and we subtract 3.

Now if we have 8 negative counters, and we want to add 3 positive counters and not change the value, then we also need to add 3 negative counters to "cancel" the 3 positive counters we added.

Then the correct option is D.

To learn more about Marcus refer to,

brainly.com/question/23140234

#SPJ1

8 0
1 year ago
Aakesh has two bags of marbles. The first bag contains 6 red marbles, 4 blue
Orlov [11]

The answer for the 1st bag is option B = 1/3

The answer for the 2nd bag is option C = 5/9

Number of marbles in 1st bag - 15 (6 red, 4 blue & 5 green)

Number of marbles in 2nd bag - 9 (3 red, 1 blue & 5 green)

The formula of probability = Total number of events in the outcome /total number of outcomes.

Now the probability that Aakesh will select a green marble from the 1st bag is 5(green marbles)/15(total number of marbles in 1st bag)

That is 5/15=1/3

Now the probability that Aakesh will select a green marble from the 2nd bag is 5(green marbles)/9(total number of marbles in 1st bag)

That is 5/9

To know more about probability go to -  https://brainly.in/question/17157610?msp_poc_exp=6

7 0
1 year ago
Read 2 more answers
If the circumference of a circle measures 5 pie cm, what is the area of the circle in terms of pie?
saw5 [17]

Answer:

6.25π cm²

Step-by-step explanation:

pi = π

Circumference = 5πcm

Now first we should find radius(r)

2πr = 5π cm

pie will be cancelled and we get here

r = 5/ 2 cm

Therefore r = 2.5 cm

Now

Area (A) = πr²

= π * 2.5²

= 6.25π cm²

4 0
3 years ago
What is the difference between 1 1/4 and 5/8
Lilit [14]
<span>1 1/4 - 5/8
= 5/4 - 5/8
= 10/8 - 5/8
= 5/8

</span><span>difference between 1 1/4 and 5/8 is 5/8
</span>
hope it helps
5 0
3 years ago
Read 2 more answers
2.5 mm<br> 2.2 mm<br> Convert to centimeters.
Elina [12.6K]

Answer:

marque sans cervelle

Step-by-step explanation:

7 0
2 years ago
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