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Lelu [443]
4 years ago
12

Keith is thirteen years older than nephew William. In four years Keith will be twice as old as William. How old is William now?

Mathematics
2 answers:
hram777 [196]4 years ago
7 0
William is 24 years old. (I think)
UkoKoshka [18]4 years ago
7 0
Let's call Keith x and William y
x=13+y

4+x=2y

substitute x with 13+y:
4+(13+y)=2y
17+y=2y
17=y

William is 17 years old
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write a slope intercept equation for a line passing through the point (2,-2) that is parallel and perpendicular to the line x=-1
vekshin1

You would need two different lines to complete this as lines cannot be both parallel and perpendicular (these are opposites). The answers would be:

Parallel: x = 2

Perpendicular: y = -2

In order to find these, we first need to see that the original line of x = -1 is a horizontal line. Therefore, any line that is parallel should be horizontal as well. To get a horizontal line through the point (2, -2), the only option is x = 2.

Similarly, with the perpendicular line, if the original line is horizontal, the new line must be vertical. The only vertical line that goes through (2, -2) is y = -2.

5 0
3 years ago
Sofia surveyed students at her school
IRISSAK [1]

Answer:

English,French,Vietnamese,Chinese,Ukrainian,other

Step-by-step explanation:

so basically the question is asking for us to convert the fractions into decimals and then, order the them from greatest to least

Q:how do you convert a fraction into a decimal?

A: numerator divided by denominator for example if you had to convert 7/9 into a decimal you would do 7 divided by 9!!!

English:1/4 is equivalent to 0.25

Ukrainian:1/20 is equivalent to 0.05

Vietnamese:0.02 is already in decimal form

French:1/10 is equivalent to 0.1

Chinese:0.02 is already in decimal form

Other:0.06 is already in decimal form

<em>Now we got all the fractions converted into decimals</em>

0.25,0.05,0.02,0.1,0.02,0.06

Now we have to put these number from greatest to least

Q:how do we put it in greatest to least?

A: if there are more zeros in the place value its more likely to be a small number for example 0.06 is smaller than 0.3

0.25 is the greatest

0.1 is the second greatest

0.02 is the third greatest

0.02 is the third greatest

0.05 is the 4th greatest

0.06 is the 5th greatest

Now we got them from greatest to least so we match the decimal numbers to the language

Starting from greatest to least is: English,French,Vietnamese,Chinese,Ukrainian,other

pls mark me brainliest

6 0
3 years ago
Write the equation of a line with a slope of -5 that passes through the point (1, -1).
ipn [44]

In this question, we will use slope intercept form that is y=mx +b, where m is the slope and b is the y intercept .

For the given question . x=1, y=-1 and slope , m = -5

We need to substitute these values in slope intercept form and solve for b, that is

-1=-5(1)+b

-1 = -5+b

Adding 5 to both sides

b =4

So we have slope, m =-5 and b=4

THerefore required equation is

y=-5x+4

8 0
4 years ago
Which scientist developed the first model of the atom that showed the structure of the inside of an atom?
bulgar [2K]

Answer: O Thomson​

Step-by-step explanation:

  • The first model which is known as "Thomson atomic model" of the atom that showed the structure of the inside of an atom is developed by William Thomson. The model gave description of an inner structure of the atom theoretically.
  • His theory was supported by J J Thomson who had discovered electron.
  • He discovered negatively charged particle during a cathode ray tube experiment

So, the correct option is "Thomson" .

8 0
3 years ago
Read 2 more answers
PLSSS HELP IF YOU TURLY KNOW THISS
mafiozo [28]

Answer:

B

Step-by-step explanation:

You don't have do do anything with the denominator because they are the same so simply subtract!

  • 9 - 4 = 5
  • 7 - 3 = 4
  • The denominator stays the same
  • 5 \frac{4}{12}
  • Simplify

= 5 \frac{1}{3}

4 0
2 years ago
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