Please help me with questions 17-20

Mathematics

1 answer:

Dovator [93]3 years ago

5 0

18) DNA has three main companies 1. deoxyribose 2.base 3. phosphate. <span>Made of two strands of nucleotides that are joined together by hydrogen bonding. Hope I could help (it's more detailed but just made it simple as I could )</span>

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Estimate the answer to 832.21 + 23.81 by first rounding each number to the nearest tenth.

ycow [4]

852.21+23.81=856.02
so the answer is C) 856

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3 years ago

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Choose the equation that represents the line passing through the point (−2, −3) with a slope of −6.

Vladimir79 [104]

Y = -6x - 15
We’re already at -3 (y) and the slope is negative so the y intercept is < -3. X is -2 and we need to find the y when x is 0. -2 is 2 away from 0 and 6 (the slope) times 2 is 12. -3 - 12 = - 15

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3 years ago

Please help me with these 3 questions!

juin [17]

Answer:

1) -4x-6x+8x=2-6

-2x=-4

x=-2

2)3x-4x=12-15

-1x=-3

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3) 12.5x+10.25=680-410

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3 years ago

Solve using square root method

avanturin [10]

$\frac{1}{2}(x+5)^2 + 9 = -15$

$\frac{(x+5)^2+18}{2} = \frac{-30}{2}$

Cancel out the denominators.

(x+5)² + 18 = -30

(x+5)² = -30 - 18

(x+5)² = -48

The equation is impossible, we have a negative number.

There isn't a number that squared gives a negative number (the square is always positive).

√(x+5)² = +/- √-48

x+5 = +/- √-48

IMPOSSIBLE

You can write the result in imaginary numbers

x+5=+/- 4i√3

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3 years ago

The standard form of 0.0000035

azamat

In scientific notation, the answer is 3.5*10^-6 .

I hope that this helps

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