3 years ago

What is the radius of the circle?

Mathematics

1 answer:

Vanyuwa [196]3 years ago

7 0

Answer:

210:28

Step-by-step explanation:

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Find the value of y. Round your answer to the nearest tenth.

ss7ja [257]

I think its supposed to be divide so i think C. would be the answer

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3 years ago

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If f(x) = 3x2 – 4 and g(x) = 2x - 6, what is g(f(2))?

saveliy_v [14]

Answer:

Step-by-step explanation:

find out f(2)

f(2)= (3×2×2) - 4= 8

then g(8) = 16 - 6= 10

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3 years ago

Solve the equation. x2 18x 81 = 25<br> a. 14, 4<br> b. –4, –14<br> c. 14, –14<br> d. –4, 4

Snowcat [4.5K]

Answer:

The answer is the option B

$-4,-14$

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2}+18x+81=25$

$x^{2}+18x+56=0$

$a=1\\b=18\\c=56$

substitute in the formula

$x=\frac{-18(+/-)\sqrt{18^{2}-4(1)(56)}} {2(1)}$

$x=\frac{-18(+/-)\sqrt{100}} {2}$

$x=\frac{-18(+/-)10} {2}$

$x1=\frac{-18+10} {2}=-4$

$x2=\frac{-18-10} {2}=-14$

7 0

3 years ago

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5×10+3÷4×5+8-45×6×23÷4=

const2013 [10]

5x10+3÷4x5+8-45x6x23÷4= 1,009.125

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3 years ago

Name the expression based on its degree and number terms 7a³+4a-12

Eddi Din [679]

3terms = trinomial (7a^2, 4a, -12)
Degree of each term 2nd, 1st, constant
Largest degree: 2nd

Answer: 2nd degree trinomial

6 0

3 years ago