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nadya68 [22]
3 years ago
10

On

Mathematics
1 answer:
olya-2409 [2.1K]3 years ago
6 0

Answer:

28.75 or 28 3/4

Step-by-step explanation:

This equation is made for Long Division:

115/4

4 cannot go into 1 evenly.

4 can go into 11, 2 times.

4x2=8

11-8=3

4 can go into 35, 8 times.

35-32=3

Add a zero at the end, then divide 4 into 30.

4 goes into 30, 7 times.

30-28=2

Add another zero, then divide again.

4 goes into 20, 5 times.

20-20=0

So, after you hit an even number you can stop dividing and put in your answer.

28.75

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If 10^x equals 0.1 percent of 10^y, where x and y are integers, which of the following must be true?
andrew-mc [135]
10^x=0.1 \% \times 10^y \\ \\
10^x=\frac{0.1}{100} \times 10^y \\ \\
10^x=\frac{1}{1000} \times 10^y \\ \\
10^x=\frac{10^y}{10^3} \\ \\
10^x=10^{y-3} \\ \\
\log_{10} 10^x=\log_{10} 10^{y-3} \\ \\
x=y-3 \\ \\
y=x+3

The answer is B.
5 0
3 years ago
PLEASE HELP. WILL GIVE BRAINIEST AND 60 POINTS if you show work so I can understand these.
vitfil [10]

1) use change in y/change in x to find the slope from two points:

change in y: 5-2=3

change in x: 0-(-1)=1

3/1=3 is your slope


2) if it is a direct variation, you know as x increases, y increases, both at constant rates

since y is 10 more than x in the example, it will always be 10 more than x

y=x+10 is your equation.

when x=9, y=19

now they could not be reffering to their difference in addition, but their difference in multiplication. In that case, y is 3 times x in the example, so it will always be 3 times x

y=3x is your equation

when x=9, y=27


3) the slope of this line is determined by change in y over change in x:

change in y: 4-4=0

you don't need to calculate the change in x because 0 divided by anything is 0, so that is your slope.

y=0x+b

4=0(1)+b

4=0+b

4=b

y=4 is your equation because 0 times x is zero. this means that it is a horizontal line with a constant y value of 4


4)

y - value of y in a point =slope (x - value of x in a point)

y-(-1)=2/3 * (x-(-3))

y+1=2/3x+2/3(3)

y+1= 2/3x+2

y=2/3x+1

from solving point slope form, you can get to slope intercept form


5) not sure what this question is asking for

- a line?

- an expression equivalent to -1 and 2/3?

both of those aren't possible with the information given


6) parallel means same slope different y intercept

y=5x+b

-1=5(2)+b

-1=10+b

-11=b

y=5x-11

7 0
3 years ago
Quick I need the answer
Feliz [49]

Answer:

x = 25!

Hope This Helps!

5 0
3 years ago
Which number completes the square? x2 − 20x + _____?
olganol [36]
Let's apply the following formula:

(x + a)^2 = x^2 + 2ax + a^2

We know that 2ax = -20x

Now, let's solve for a

First, let's divide both sides by 2.

ax = -10x

Now, let's divide both sides by x

a = -10

Now, let's square that value to find the number that completes the square.

a^2 = (-10)^2

a^2 = 100

The number that completes the square is 100.

Have an awesome day! :)
8 0
4 years ago
A drawing with the scale of 3 cm for each meter shows where Adam wants to plant flowers. If the actual distance of the flower pl
Ronch [10]
Ok so 3cm/1m so 25 m times 3 cm is the answer so the answer is 75 cm

8 0
4 years ago
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