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3 years ago

Multiply (2.0 ⋅ 10−4) ⋅ (3.1 ⋅ 10−20). Express the answer in scientific notation.

Mathematics

2 answers:

Serggg [28]3 years ago

7 0

I think that the answer is -40

PSYCHO15rus [73]3 years ago

6 0

Answer:

176

Step-by-step explanation:

(2.0 ⋅ 10−4) ⋅ (3.1 ⋅ 10−20)=176

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Convert to the indicated unit of measures

sp2606 [1]

Answer:

The answer is below

Step-by-step explanation:

1) 708 mm

1000 mm = 1 m

$708\ mm=708\ mm*\frac{1\ m}{1000\ mm}=0.708\ m$

2) 15.6 km

1 km = 100 dam

$15.6\ km=15.6\ km*\frac{100\ dam}{1\ km}=1560\ km$

3) 108 cc

1 cc = 1 ml

$108\ cc=108\ cc*\frac{1\ ml}{1\ cc}=108\ ml$

4) 8 tbsp

1 tbsp = 14.7868 ml

$8\ tbsp=8\ tbsp*\frac{14.7868\ ml}{1\ tbsp} =118.294\ ml$

5) 16.5 L

1 L = 0.264172 gal

$16.5\ L=16.5\ L *\frac{0.264172\ gal}{1\ L} =4.56\ gal\\\\$

6) 3569 sec

1 day = 86400 sec

$3569\ sec=3569\ sec*\frac{1\ day}{86400\ sec}=0.04\ day\\\\$

7) 4 score

1 score = 240 months

$4\ score=4\ score*\frac{240\ month}{1\ score}=960\ month$

8) 299 K

Celsius = kelvin - 273.15

Celsius = 299 - 273.15 = 25.85 °C

9) 200 °F

Celsius = (farenheit - 32) * 5/9

Celsius = (200 - 32) *5/9 = 93.33 °C

10) 10866 mg

1 kg = 1000000 mg

$10866\ mg= 10866\ mg*\frac{10^6\ kg}{1\ mg}=0.10866\ kg$

4 0

3 years ago

Find the missing side lengths. leave your answers as radicals in simplest form.

Murrr4er [49]

Answer:

x = 4 , y = 2

Step-by-step explanation:

Using the sine / tangent ratios in the right triangle and the exact values

sin60° = $\frac{\sqrt{3} }{2}$ and tan60° = $\sqrt{3}$ , then

sin60° = $\frac{opposite}{hypotenuse}$ = $\frac{2\sqrt{3} }{x}$ = $\frac{\sqrt{3} }{2}$ ( cross- multiply )

x $\sqrt{3}$ = 4 $\sqrt{3}$ ( divide both sides by $\sqrt{3}$ )

x = 4

and

tan60° = $\frac{opposite}{adjacent}$ = $\frac{2\sqrt{3} }{y}$ = $\sqrt{3}$ ( multiply both sides by y )

y $\sqrt{3}$ = 2 $\sqrt{3}$ ( divide both sides by $\sqrt{3}$ )

y = 2

6 0

3 years ago

The expression 6a-14-a+7 simplifies to

Aloiza [94]

The answer to this is 5a-7

8 0

3 years ago

Read 2 more answers

Simplify 5(3x-6)-8(3x-7)<br><br> Can someone explain how to do this in English?

Lunna [17]

Remember the distributive property? It goes like x(a+b)=xa+xb... For example 3(6+7)=(3*6)+(3*7)=39
Same here
5(3x-6)-8(3x-7)
do the thing
(15x-30)-(24x-56)
Take parentheses off.
15x-30-24x+56
//WHY PLUS 56 NOT MINUS?
//because there was a minus sign outside the original parentheses, so the signs inside have to be flipped when the parentheses is taken off
//Let's simplify now
15x-24x-30+56
-9x+26
^^The answer!

5 0

3 years ago

Read 2 more answers

The volume of a sphere can be calculated by V = 4/3 * pi If the volume is 113.04 cm ^ 3 what is the radius?

lisov135 [29]

Answer:

2.99 cm

Step-by-step explanation:

V= $\frac{4}{3}$ (pi)(r^3)=113.04cm^3