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nignag [31]
3 years ago
7

Grade 7 Need help with proportions (PICTURE INCLUDED)

Mathematics
1 answer:
jeka57 [31]3 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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Fill in the missing factor to show that 2/3 equivalent to 8/12.
Studentka2010 [4]

Answer:

4/4

Step-by-step explanation:

2/3 * what = 8/12

Multiply the top and bottom by 4/4

2/3 *4/4 = 8/12

3 0
2 years ago
The temperature at 6 a.M. Was 32 degrees. If the temperatures increased at a constant rate of 3 degrees per hour all day, what w
Stolb23 [73]
It would be 53 degrees i’m pretty sure it’s 53 degrees
4 0
3 years ago
Read 2 more answers
Help me find the range of this function please
lara31 [8.8K]

Answer:

{-2, -14, -26, -50}

Step-by-step explanation:

The range of the function is the function evaluated at each point of the given domain. So to find the range of the function we need to find the value of the function for each point in the domain:

- For x = -8

f(x)=-2x-18

f(-8)=-2(-8)-18

f(-8)=16-18

f(-8)=-2

The first value of the range of the function is -2

- For x = -2

f(x)=-2x-18

f(-2)=-2(-2)-18

f(-2)=4-18

f(-2)=-14

The second value of the range is -14

- For x = 4

f(x)=-2x-18

f(4)=-2(4)-18

f(4)=-8-18

f(4)=-26

Th third values of the range is -26

- For x = 16

f(x)=-2x-18

f(16)=-2(16)-18

f(16)=-32-18

f(16)=-50

The fourth and last value of the range is -50

Now we can put all the values of the range together

The range of the function is {-2, -14, -26, -50}

8 0
3 years ago
Use the formula to find
Marizza181 [45]

Answer:

5525

Step-by-step explanation:

Using the formula with n = 25 , then

\frac{25(26)(50+1)}{6}

= \frac{25(26)(51)}{6}

= \frac{33150}{6}

= 5525

5 0
2 years ago
Bill needs to edge his yard with the dimensions in the shape below. What area will he have walked after completing his edging? R
meriva

Answer:

37.8

Step-by-step explanation:

The distance is the addition of all sides of the figure. Then, we need to find the length of the diagonal (d). To do that we have to make a right triangle with height (h) = 5 m. Given that the top length is 12 m and the bottom length is 15 m, the base (b) of the triangle is 15 - 12 = 3 m.

Using Pythagorean theorem:

d² = h² + b²

d² = 5² + 3²

d = √34

d = 5.8 m

Therefore, the distance he will have walked is 5.8 + 12 + 15 + 5 = 37.8 meters

Credits to:<u>jbiain</u>

8 0
3 years ago
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