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kramer
3 years ago
12

(PLEASE HELP)

Mathematics
2 answers:
Tom [10]3 years ago
5 0

Answer:

B. Collect like terms

Step-by-step explanation:

The first step is to subtract 20x from each side of the equation, and we have the following

20x + 5y -20x=40-20x

We can see that on the left side of the equation we have <u>like terms</u> (the two terms containing x)

so the next step is to combine or collect those like terms 20x and -20x to simplify the expression:

(20x-20x)+5y=40-20x\\5y=40-20x

We are not distributing or eliminating the x (because there is still a term with x on the right side), nor are we completely isolating the y yet.

What was done in this step was to collect like terms.

stich3 [128]3 years ago
4 0

Answer:

C

Step-by-step explanation:

Because you should be subtract each other by 20x to transfer from side to another side.

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The weights of certain machine components are normally distributed with a mean of 8.04 g and a standard deviation of 0.08 g. Fin
NISA [10]

Answer:

The bottom 3 is separated by weight 7.8896 g and the top 3 is separated by weight 8.1904 g.

Step-by-step explanation:

We are given that

Mean, \mu=8.04 g

Standard deviation, \sigma=0.08g

We have to find the two weights that separate the top 3% and the bottom 3%.

Let x be the weight of  machine components

P(Xx_2)=0.03

P(X

=0.03

From z- table we get

P(Z1.88)=0.03

Therefore, we get

\frac{x_1-8.04}{0.08}=-1.88

x_1-8.04=-1.88\times 0.08

x_1=-1.88\times 0.08+8.04

x_1=7.8896

\frac{x_2-8.04}{0.08}=1.88

x_2=1.88\times 0.08+8.04

x_2=8.1904

Hence, the bottom 3 is separated by weight 7.8896 g and the top 3 is separated by weight 8.1904 g.

5 0
2 years ago
The half of the day from midday to midnight can be described as
Serjik [45]

Answer:

24hours divided by 2 is 12

Step-by-step explanation:

8 0
3 years ago
Which function is shown in the graph?
muminat

Answer: The correct answer choice is B

Step-by-step explanation:

I graphed each function on the desmos calculator and answer choice B matched the graph.

6 0
3 years ago
2
Sati [7]

Answer:

176 mm

Step-by-step explanation:

The circumference of a circle is the perimeter of a circle (length of a circle). The circumference of a circle is given as:

Circumference (C) = 2πr = πd, where d is the diameter

The circumference of a circle with diameter 7 mm is:

C = πd = 22/7(7) = 22 mm

The length of the paper to round the cylindrical pencil is the same as the perimeter of the pencil which is 22 mm.

To round the pencil 8 times, the length of the paper needed = 8 × 22 mm = 176 mm

6 0
3 years ago
Solve:<br> -11 - 79 +5g = 3
Katyanochek1 [597]

Answer:

g=18.6

Step-by-step explanation:

-11-79+5g=3

-90+5g=3

5g=3+90

5g=93

g=93/5=18.6

g=18.6

6 0
3 years ago
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