3 years ago

9x + 3y = 4 7x + 3y = 20

Mathematics

1 answer:

xeze [42]3 years ago

5 0

Answer:

x=-8, y=76/3

Step-by-step explanation:

I solved for substitution since I didn't know exactly what you're solving for.

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If one atom of carbon weighs 1.99 × 10^−22 g and one atom of hydrogen weighs 1.67 × 10^−27 g, which element weighs more? Explain

garik1379 [7]

Answer:

The atom of carbon weighs more

Step-by-step explanation:

we have

<em>Atom of carbon weighs</em>

$1.99*10^{-22}\ g=1.99*10^{-22}(\frac{10^{5}}{10^{5}})=199,000*10^{-22}(\frac{1}{10^{5}})=199,000*10^{-27}\ g$

<em>Atom of hydrogen weighs</em>

$1.67*10^{-27}\ g$

Compare

$199,000*10^{-27}\ g > 1.67*10^{-27}\ g$

therefore

The atom of carbon weighs more

8 0

3 years ago

Order of operations

lorasvet [3.4K]

PEMDAS

12*(3/4) comes first

8+9=17

7 0

3 years ago

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What is the product of (1.9*10^-3)(2*10^4)

RoseWind [281]

Answer:

to solve use the distributive property and multiply

Step-by-step explanation:

I'm sorry I do not have the product

4 0

3 years ago

Read 2 more answers

Please help am very Confused

GuDViN [60]

Answer:

Step-by-step explanation:

n>3

5 0

3 years ago

Fynjy0 [20]

Answer:

PQ R s parallelogram

< Q = < s = 114

< P = 180 _ 114 = 66

<2 = 66 / 2 = 33

< I = 114 / 2 = 5 7

< I + < 2 = 3 3 + 57 = 90

< ( STP ) = 90

TP I ST

3 0

3 years ago