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kobusy [5.1K]
3 years ago
13

If the radius of a circle is twice as great as

Mathematics
1 answer:
slava [35]3 years ago
5 0

Answer:

how many times larger? 4 times as large

Step-by-step explanation:

if the radius is half as big as the diameter and the diameter is half of the area

<u>r</u> x <u>r</u> = d

<u>d</u> x <u>d</u> =  a

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Given that the expression x³_ ax² + bx+c leaves the same remainder when divided by x + 1 or x-2, find 'a' in terms of 'b'.​
goblinko [34]

Answer:

Hi,

a=b+3

Step-by-step explanation:

\begin{array}{c||c|c|c|c}&x^3&x^2&x&1\\---&---&---&---&---\\&1&-a&b&c\\x=-1&&-1&a+1&-a-b-1\\---&---&---&---&---\\&1&-a-1&a+b+1&c-a-b-1\\\end{array}

\begin{array}{c||c|c|c|c}&x^3&x^2&x&1\\---&---&---&---&---\\&1&-a&b&c\\x=2&&2&4-2a&2b+8-4a\\---&---&---&---&---\\&1&2-a&b+4-2a&c+2b+8-4a\\\end{array}

Thus:

c+2b+8-4a=c-a-b-1

3b-3a=-9

<u>a=b+3</u>

5 0
2 years ago
Can someone help me plz
umka2103 [35]

Step-by-step explanation:

Equation: 4(3+x)=36

First step:

(4*3)+(4*x)=36

Second step:

12+4x=36

Third step:

4x=36-12\\4x=24

Fourth step:

x=\frac{24}{4}\\ x=6

4 0
3 years ago
Question 16 of 21 Which graph shows the solution to this system of linear inequalities?
WARRIOR [948]

The answer is B as it is the only one that matches the 2 inequalities.

3 0
2 years ago
Please help! Attachment below
dmitriy555 [2]

Answer:

that means the system has no solutions

4 0
3 years ago
A swimming pool is in the shape of a right triangle. One leg has a length of 15 feet and the hypotenuse is √325 feet. Estimate t
laiz [17]

Answer:

10 feet

Step-by-step explanation:

a^2+b^2=c^2

15^2+B^2=365

225+b^2=365

b^2=100

b=10

6 0
3 years ago
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