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NISA [10]
3 years ago
8

Help me with this question

Mathematics
1 answer:
Effectus [21]3 years ago
5 0

Answer:

20\pi

Step-by-step explanation:

Circumference formula: 2\pi r

Since the diameter is 20, the radius will be half of the diameter

r=d/2, where d=20

r=20/2=10

C=2\pi r

C=2(10)\pi

C=20\pi

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-3/2t=-9 please help. its for a test
11111nata11111 [884]

-\frac{3}{2}t=-9\\\\t=-9:(-\frac{3}{2})\\\\t=-9\cdot(-\frac{2}{3})\\\\t=\frac{18}{3}\rightarrow\boxed{t=6}

3 0
3 years ago
Read 2 more answers
Multiply the polynomials (5x^2+4x-4)(4x^3-2x+6)<br> Explain your steps!!
Lapatulllka [165]
So distribute using distributive property
a(b+c)=ab+ac so

split it up
(5x^2+4x-4)(4x^3-2x+6)=(5x^2)(4x^3-2x+6)+(4x)(4x^3-2x+6)+(-4)(4x^3-2x+6)=[(5x^2)(4x^3)+(5x^2)(-2x)+(5x^2)(6)]+[(4x)(4x^3)+(4x)(-2x)+(4x)(6)]+[(-4)(4x^3)+(-4)(-2x)+(-4)(6)]=(20x^5)+(-10x^3)+(30x^2)+(16x^4)+(-8x^2)+(24x)+(-16x^3)+(8x)+(-24)
group like terms
[20x^5]+[16x^4]+[-10x^3-16x^3]+[30x^2-8x^2]+[24x+8x]+[-24]=20x^5+16x^4-26x^3+22x^2+32x-24

the asnwer is 20x^5+16x^4-26x^3+22x^2+32x-24




4 0
3 years ago
Write the equation Of a function who parent function, f(x)=x+8 is shifted 2 units to the right
Juli2301 [7.4K]

Answer:

g(x)=x+6

Step-by-step explanation:

we have

f(x)=x+8

If f(x) is shifted 2 units to the right

then  

The rule of the translation is

g(x)=f(x-2)

so

g(x)=(x-2)+8

g(x)=x+6

5 0
3 years ago
Find the distance from the point (1, 4) to the line y = 1/3x – 3.
Otrada [13]

Answer: Distance between line and point =

4√5 -3/2√10

Step-by-step explanation:

Distance between the line is

= √ ((9-0)²+(0+1)²)

= √ (89+1)

= √90

= 3√10

Half of the line = 3/2√10

Distance of one side of the line and the point.

= √((9-1)²+(0-4)²)

= √((8)²+(-4)²)

=√64+16

= √80

= 4√5

Distance between line and point =

4√5 -3/2√10

8 0
3 years ago
In a group of​ bird-watchers, 4 out of every 5 people have seen a bald eagle. What percent of the​ bird-watchers have not seen a
Andreas93 [3]

Answer:

20%

Step-by-step explanation:

4/5=.80

1-.80=.20

.20=20%

4 0
3 years ago
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