4 years ago

Please I really need help on these two

Mathematics

1 answer:

klemol [59]4 years ago

7 0

Answer:

try the app called photo math it works realy well!

Step-by-step explanation:

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Find the solutions to x2 = 27.<br> O A. x = +3,5<br> B. x = +39<br> O C. x = +9.12<br> D. X = +9.5

Eduardwww [97]

Answer:

Step-by-step explanation:

Given

x² = 27 ( take the square root of both sides )

x = ± $\sqrt{27}$

= ± $\sqrt{9(3)}$

= ± $\sqrt{9}$ × $\sqrt{3}$

= ± 3 $\sqrt{3}$ → A

8 0

3 years ago

If f(x) = 3x^2+ 3x^(1/2) + 3x, then f(-9) is equal to

ivanzaharov [21]

Since

$f(x)=3x^2+3\sqrt{x}+3x$

the domain of f(x) is the set of non-negative integers, because we can't feed a square root with negative inputs. So, you couldn't comput f(-9)

Unless you're allowed to use complex numbers, in that case we have

$f(-9)=3\cdot (-9)^2+3\sqrt{-9}+3\cdot (-9)=3\cdot 81+3\cdot (9i)-27$

Which evaluates to

$243+27i-27=216+9i$

5 0

3 years ago

Complete the equation. ( 6 feet, 8 inches) + ( 4 feet, 10 inches)

Stels [109]

11 ft, 6in. I added the inches first. 10+8 in=18 in. Which is 1 ft 6 in. Then I add the ft, 6+4ft+10 ft. Then add 1ft 6in+10 ft+ 11ft 6in

11ft 6in

5 0

4 years ago

Which values are solutions of the inequality |y| <3? select all that apply.

MrRa [10]

The answer is 3 5 6 i think

4 0

3 years ago

The diagram below shows a circular pizza with a diameter of 12 inches. The pizza is in a square box with side lengths of 14 inch

saw5 [17]

Answer:

Step-by-step explanation:

Area of box = 14^2 = 196 in^2

Radius r of pizza = 12/2 = 6

Area of pizza = πr² = 36π ≈ 113.04 in^2

5 0

3 years ago

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