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ratelena [41]
3 years ago
14

If g(x) = 3x^2+2x-1. Find g(-1).​

Mathematics
1 answer:
Mandarinka [93]3 years ago
5 0

Step-by-step explanation:

g(x) = 3x² + 2x - 1

g(-1) = 3(-1)² + 2(-1) - 1

= 3(1) -2 -1

= 3 - 3

= 0

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Find the area of the semicircle. Round your answer to the nearest whole number, if necessary.
xxMikexx [17]

Answer:

To the nearest hundredth : 628.32 cm^2

To the nearest whole number : 628 cm^2

Step-by-step explanation:

The formula for the area of a circle is : \pi*radius^2

To work out the area you would first need to work out the radius. You can do this by dividing the diameter of 40 cm by 2, this gives you 20 cm. This is because the radius is half of the diameter.

Now that we have worked out the radius, the next step would be to work out the area. You can do this by multiplying pi by the radius of 20 squared, this gives you 1256.64.

The final step is to work out the area of this semi-circle. You can do this by dividing the area of 1256.64 by 2, this gives you 628.32 cm^2. This is because a semi-circle is half of a circle.

1) Divide 40 by 2.

40/2=20 cm

2) Multiply pi by 20 squared.

\pi*20^2=1256.64 cm^2

3) Divide 1256.64 by 2.

1256.64/2=628.32 cm^2

6 0
2 years ago
What is greater 27% or 0.48
mylen [45]

Well since 27% in decimal form is .27, that mean .48 is greater.

27% < 0.48

3 0
2 years ago
Zayed is helping his classmates get ready for their math test by making them identical packages of pencils and calculators. He h
oee [108]
So 72 pencils and 24 calculators
so greates number of identical calculators

this means
what is the biggest number that we can divide 72 and 24 by and get a whole number
this is called the GCM or greatest common multipule

to find the GCM, you factor 72 and group the like ones
72=2 times 2 times 2 times 3 times 3
24=2 times 2 times 2 times 3
so the common group is 2 times 2 times 2 times 3 or 24
so the greates number of packs is 24

so pencils
72 divided by 24=72/24=3
3 pencils per pack

24 divided by 24=24/24=1
1 calulator per pack


answer is 3 pencils and 1 calculator per pack
6 0
3 years ago
Read 2 more answers
A bag contains 10 white gumballs and 12 orange gumballs.
Fed [463]
10+12=22 \\  \frac{10}{22} 10:22  \\ 10/2=5 \\  22/2=11 \\  \frac{5}{11}  \frac{5}{11} 5:11
4 0
3 years ago
Read 2 more answers
What is the equation in point slope form of the line that passes the points (2,-3) and(-5,8)
Grace [21]

Answer:

y+3=-11/7(x-2)

Step-by-step explanation:

y-y1=m(x-x1)

m=(y2-y1)/(x2-x1)

m=(8-(-3))/(-5-2)

m=(8+3)/(-7)

m=11/-7

m=-11/7

y-(-3)=-11/7(x-2)

y+3=-11/7(x-2)

4 0
2 years ago
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