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3 years ago

the circumference of a circle is 20m. The shaded region covers 1/4 of the circle. What is the area of the shaded region?

Mathematics

1 answer:

weeeeeb [17]3 years ago

6 0

Answer:

Step-by-step explanation:

20/4=5

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I need help on 90-93

Natasha_Volkova [10]

Answer:

negative 3

Step-by-step explanation:

because 90_93

8 0

3 years ago

A straw is placed inside a rectangular box that is 2" x 6" x 8". If the straw fits exactly into the box diagonally from the bott

den301095 [7]

Answer: $10.2"$

Step-by-step explanation:

Given

The dimension of the rectangular box is $2"\times 6"\times8"$

If the Straw fits exactly into the box diagonally

So, the length of the longest diagonal of the rectangular box is equal to the length of the straw i.e.

$\Rightarrow l=\sqrt{2^2+6^2+8^2}\\\\\Rightarrow l=\sqrt{4+36+64}\\\\\Rightarrow l=\sqrt{104}\\\Rightarrow l=10.19\approx 10.2"$

4 0

3 years ago

Find each f(c) using synthetic substitution.

love history [14]

f(3) = 69

Step-by-step explanation:

Given f(x) =5x5 + 10x4 + 3x3 + 8x2 – 6x – 3; c = 3

f(x) = 25+40+9+16 - 6x - 3

f(x) = - 6x +90-3

f(x) = - 6f(3) = 69x + 87

Taken c = 3

f(c) = - 6c +90-3

f(c) = - 6c + 87

substitute c=3

f(3) = - 6 (3) +90-3

= -18 +87

= 69

Hence .,f(3) = 69

3 0

3 years ago

Read 2 more answers

Explain how to apply the laws of exponents when multiplying and dividing numbers written in scientific notation.

Jlenok [28]

It is more effective if I explain using examples. So, for multiplication, you just have to multiply the magnitude, then add the exponents of the base 10. For example, when you multiply 5.2×10³ and 1.6×10², the solution would be:

(5.2)(1.6)(10³⁺²) = 8.32×10⁵

Now, for division, you will have to divide the magnitudes, and subtract the exponents by numerator minus denominator. The solution is as follows:

(5.2/1.6)(10³⁻²) = 3.25×10¹

5 0

4 years ago

Prove if a and b are integers, prove that if a is even and b is even then a+b is even

jeka57 [31]

Answer:

Let a and b integers and suppose that are even numbers. Then, exist integers k and m such that $a=2k$ and $b=2m$ .

Then,

$a+b=2k+2m=2(k+m)=2n$

Since, k and m are integers then n=k+m is an integer. Then, since a + b is of the form 2 by an integer n, then a + b is an even number.

7 0

3 years ago