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nignag [31]
4 years ago
7

Grade 7 Need help with proportions (PICTURE INCLUDED)

Mathematics
1 answer:
jeka57 [31]4 years ago
4 0
What you are doing with proportions most the time is solving for a variable which in this example I will use an x. You have to do something called cross multiplying. now look at number 21. when you cross multiply you multiply the number of the top part of the fraction on the left side to the bottom part of the fraction on the right side. In that example 1 × 36 = 36. now write 36 = 16x since you have to cross multiply the other parts of the fraction. Then you would divide both sides of the equation by 16. I will make a mixed fraction for this example. 2 4/16 which simplified equals 2 1/4
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HELP ASAP!!!! NEED HELP<br> PLEASE HELP!!!
Bingel [31]

Answer:

54?

Step-by-step explanation: 17+19=36

36=90=126

180-126=54

3 0
3 years ago
1. in the figure FL=5 and HL= 8 what is FM (hint Pythagorean theorem and radi of circles)
marta [7]
1- FM is 3

we know that FM and FG are radius of the circle. so:
FM =FG


so if we find FG by Pythagorean theorem, we find FM, too


FL (hypotenuse) is 5

HL is 8. GL is half of HL. so GL is 4

now we can use Pythagorean theorem to find FG
4 {}^{2}  +  {x}^{2} =  {5}^{2}    \\  {x}^{2}  =  {5}^{2}  -  {4}^{2}  \\  {x}^{2}  = 25 - 16 = 9 \\ x =  \sqrt{9}  = 3




2- x is 40


BAD is half of m DB

ADB is half of m AB


so BAD is 50

and ADB is 90


Then ABD will be:
180 - (50 + 90) = 180 - 140  \\ = 40



good luck

5 0
3 years ago
NEED HELP!!! PLEASE!!!
marta [7]

Answer:


Step-by-step explanation:

ST and WX

6 0
4 years ago
Which word describes the slope of the line?
Verdich [7]
The answer is D= undefined :)
5 0
3 years ago
Given the function<br> Calculate the following values:<br> f( - 1) =<br> f(0)<br> f(2)=
Alecsey [184]

-1 is less than 0, so you use the first equation:

3(-1) +2 = -3+2 = -1

f(-1) = -1

For 0 use the 2nd equation:

3(0) + 4 = 0+4 = 4

f(0) = 4

For 2 use the 2nd equation:

3(2) + 4 = 6+4 = 10

f(2) = 10

6 0
3 years ago
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