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3 years ago

I need this for math pls help!

Mathematics

2 answers:

PilotLPTM [1.2K]3 years ago

6 0

Answer:

when multiplying by 10 just move up by one zero

notsponge [240]3 years ago

3 0

Multiple my 10 and move up the zero

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If i= -1, what is the value of i3? O-1 Ο i O 1 O -i

chubhunter [2.5K]

Answer:

I dont think this question is formated correctly. i does not equal to -1. However, If you are wondering about i^-3. it is -i. Otherwords it is D. Hope this helped.

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3 years ago

In the number 14,685,000,000, the digit 8 is in what place

Ghella [55]

I believe it is in the ten millionth place.

7 0

4 years ago

Read 2 more answers

Which of the following are solutions to 2x2 – 8x - 90? Select all that apply.

Bond [772]

Answer:

x=-5, x=9

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

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$2x^{2} -8x-90$

equate to zero

$2x^{2} -8x-90=0$

$2=-1\\b=-8\\c=-90$

substitute in the formula

$x=\frac{-(-8)\pm\sqrt{-8^{2}-4(2)(-90)}} {2(2)}$

$x=\frac{8\pm\sqrt{784}} {4}$

$x=\frac{8\pm28} {4}$

$x=\frac{8+28} {4}=9$

$x=\frac{8-28} {4}=-5$

therefore

The solutions are x=-5, x=9

6 0

3 years ago

Which statement is TRUE? A) The area of the blue circle is greater than the sum of the areas of the green square and black circl

statuscvo [17]

Answer:

C. The area of the blue circle is equal to the sum of areas of green square and black circle.

Step-by-step explanation:

The area of a circle is the circumference of the circle measured with its diameter. In the given scenario the area of the blue circle is greater than the area of black circle. This is because of the difference in diameter of the two circles. The area of green square plus the area of black circle equals the blue circle.

6 0

3 years ago

Given: f(x) = 2x + 5 and g(x) = x2 and h(x) = -2x h(g(f(x))) = _______

zepelin [54]

Answer:

Step-by-step explanation:

f(x)= 2x + 5

g(2x + 5)= (2x + 5)^2 = 4x^2 + 20x + 25

h(4x^2 + 20x + 25)= -2(4x^2 + 20x + 25)= -8x^2 -40x - 50

4 0

3 years ago