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jarptica [38.1K]
3 years ago
6

Can someone help on my math test? giving out brainiest!

Mathematics
2 answers:
katovenus [111]3 years ago
8 0

Answer:

None of them are correct because the circumference formula is 2pir

vesna_86 [32]3 years ago
8 0

Answer:

Neither one of them is correct

Step-by-step explanation:

Since the formula to find the circumference of a circle is C = dπ or C = 2πr. We know that a diameter of the circle is the same as 2 times the radius of the circle, here Sawyer and his sister are both saying the same thing, one way or the other. When Sawyer says C = d, he should multiply the d with a pi sign to get the correct circumference. Similarly when his sister says C = 2r, she is stating the congruent equation to the one of Sawyer's, therefore she needs to multiply 2r by the pi sign to get the correct circumference. Hence, both Sawyer and his sister are wrong stating the equation to solve for the circumference of the circle.

Hope this helps!

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3y - 5 if y = 8 answer the expression, please
Elena-2011 [213]

3(8)-5

3x8=24

24-5=19

the answer is 19

7 0
3 years ago
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Step-by-step explanation:

6 0
2 years ago
PSEG Long Island charges its residential customers a little monthly service charge plus an energy charge based on the amount of
german

Using linear function concepts, it is found that:

  • a) It costs $0.1 for each kilowatt hour of electricity used in excess of 250 kWh.
  • b) f(90) = 46.6, which is the cost of 340 kWh of consumption in a month.

------------------------------

A <em>linear function </em>has the format given by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0.

The equation for the cost of h kilowatt hours (kWh) of electricity used in excess of 250 kWh is of:

C = f(h) = 37.6 + 0.1h

Item a:

  • The slope is of m = 0.1, which means that it costs $0.1 for each kilowatt hour of electricity used in excess of 250 kWh.

Item b:

f(90) = 37.6 + 0.1(90) = 37.6 + 9 = 46.6

250 + 90 = 340.

f(90) = 46.6, which is the cost of 340 kWh of consumption in a month.

A similar problem is given at brainly.com/question/24808124

8 0
2 years ago
Which expression is equivalent to 5x+10y-15?
Papessa [141]

Answer:

Step-by-step explanation:

I think it's 5(x+2y-3)

5 0
2 years ago
Don’t understand please help
Mazyrski [523]
A is ur answer trust me
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2 years ago
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