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3 years ago

PLEASE HURRY IT'S URGENT!!!!!

Mathematics

2 answers:

icang [17]3 years ago

8 0

C. 11/20<4/7

it's the answer

nasty-shy [4]3 years ago

5 0

The answer is C) 11/20<4/7

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First right answer will get brainlist

Ronch [10]

Try C, i am not completely sure but i tried

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3 years ago

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Find the circumference of a circle whose area is 247 ft2.

gizmo_the_mogwai [7]

Answer:

B is the answer

Step-by-step explanation:

A = πr²

24π = πr²

24 = r²

$\sqrt{24}$ = r

r = $\sqrt{4}$ $\sqrt{6}$ = 2 $\sqrt{6}$

C = 2πr

C = 2π(2 $\sqrt{6}$ )

C = 4 $\sqrt{6}$ π

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3 years ago

Sophie can type 128 words in 3 minutes. How many minutes will it take her to type 576 words?

Andrej [43]

Let’s first find the rate that she types at in wok.
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3 years ago

What are the zeros of the quadratic function f(x) = 2x2 – 10x – 3?

Ipatiy [6.2K]

Answer:

$x = \frac{ 5 \ + \ \sqrt{31}}{2} \ , \ x = \frac{ 5 \ - \ \sqrt{31}}{2}$

Step-by-step explanation:

$2x^2 - 10x - 3 = 0 \\\\a = 2 \ , b = - 10 \ , \ c = - 3 \\\\x = \frac{-b^2\ \pm \ \sqrt{b^2 - 4ac}}{2a}\\\\x = \frac{10 \ \pm \sqrt{(-10)^2 - ( 4 \times 2 \times -3)} }{2 \times 2}\\\\x = \frac{10 \ \pm \sqrt{(100 - ( -24 )} }{4}\\\\x = \frac{10 \ \pm \sqrt{(100 + 24 } }{4}\\\\x = \frac{ 10 \ \pm \sqrt{124}}{4}\\\\x = \frac{ 10 \ \pm \sqrt{4 \times 31}}{4}\\\\x = \frac{ 10 \ \pm \sqrt{2^2 \times 31}}{4}\\\\x = \frac{ 10 \ \pm2 \sqrt{31}}{4}\\\\x = \frac{ 5 \ \pm\sqrt{31}}{2}\\\\$

$x = \frac{ 5 \ + \ \sqrt{31}}{2} \ , \ x = \frac{ 5 \ - \ \sqrt{31}}{2}$

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2 years ago

Write the number in standard form.<br><br> 7×10^7

mamaluj [8]

7×10^7 = 70000000 (10^7 = 10000000)

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3 years ago

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