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dalvyx [7]
3 years ago
8

Which equation could be used to solve this problem?

Mathematics
2 answers:
kumpel [21]3 years ago
8 0
B is the correct answer.

Kate is 3 times Jen. 3x
Their combined weight totals 140
3x + x = 140
laiz [17]3 years ago
7 0

Answer:

B

Step-by-step explanation:

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Given h(t)=-2(t+5)^2+4, find h(-8)<br><br> -334<br> -14<br> -45<br> -445
stepladder [879]

Substitute -8 for t in the expression, and now you have: h(-8) = -2[(-8) + 5]^2 + 4. Solve inside the parentheses; add -8 and 5.

h(-8) = -2[-3]^2 + 4, solve exponents next by squaring -3.

h(-8) = -2[9] + 4, multiply -2 and 9.

h(-8) = [-18] + 4, add -18 and 4.

h(-8) = -14.

6 0
3 years ago
If Sonia practices piano for 1/3 of an hour each day,how long will she have practiced in a week
Fiesta28 [93]

Answer:

2 hours and 20 minutes

Step-by-step explanation:

1/3 of an hour is 20 minutes and a week is 7 days. Multiply 20 minutes by 7 days. You get 140 minutes which equals 2 hours 20 minutes

5 0
3 years ago
Please help !!
olga2289 [7]
If you have learned how to find the line of best fit manually, then you can do it that way. Perhaps you may want to just find a line that can connect at least two of the points and I believe that that line will be able to represent the other points because, in general, the points are pretty close to one another. 

If you don't want to do it manually and have a graphing calculator (which I recommend) then you can use that to find the line of best fit (and if you want then you can see how precise your points are with your r^2 value). Or there is a website (http://illuminations.nctm.org/Activity.aspx?id=4186), which you can use to help you to find the equation of that particular line. 

Once you have that done, then you can substitute 2009 for the x value in the equation and then see what y value the equation produces. That will then be your answer :) 
4 0
3 years ago
What are all of the x-intercepts of the continuous function in
kenny6666 [7]

Answer: (-4,0), (4,0)

Step-by-step explanation:

unit test lm ao

7 0
3 years ago
Read 2 more answers
The answer to c plz
NikAS [45]

Answer:

≈ 30.63 cm²

Step-by-step explanation:

The shaded area is calculated by subtracting the area of the inner circle from the area of the outer circle.

outer circle has radius = 8 ÷ 2 = 4 and inner circle has radius = 5 ÷ 2 = 2.5

shaded area = πr₁² - πr₂² (r₁ is outer and r₂ is inner )

A = π (4² - 2.5²)

   = π(16 - 6.25) = 9.75π ≈ 30.63 cm²

           

5 0
3 years ago
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