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4 years ago

- a - 5 + 12a - 9 + 7

1 answer:

5 0

The answer is 11a -7 don’t go on brainly for math problems go on photo math. On photo math all you have to do is take a pic of the equation and it will answer it to you right away.

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-3(8+j)=-16+5j<br> HELP ASAP NEED THIS DONE TONIGHT BEFORE MIDNIGHT

iogann1982 [59]

Answer:

j = -1

Step-by-step explanation:

Eliminate parentheses:

-24 -3j = -16 +5j

Add 3j+16

-8 = 8j

Divide by the coefficient of j.

-1 = j

8 0

3 years ago

Read 2 more answers

What is the equation of a horizontal line passing through the point (-3,8)

Tresset [83]

Answer:

y=8

Step-by-step explanation:

Horizontal equations are of the form

y =

The y coordinate is 8

y=8

5 0

3 years ago

A ray of light with intensity lo falls vertically on the sur face of the sea and at ten meters deep its intensity is 10/3. Assum

seropon [69]

Answer:

intensity = $\frac{Io}{15}$

intensity = $\frac{Io}{30}$

depth = 333.33 m

Step-by-step explanation:

given data

deep = 10 m

intensity = Io

intensity = Io/3

to find out

intensity of light at 50 m and 100 m and 1/100 of initial intensity remain ?

solution

we know here that intensity is inversely proportional to deep so

intensity = k × $\frac{1}{Deep}$ .................1

here k is constant

so we have given 10 m deep so

$\frac{Io}{3}$ = $\frac{k}{10}$

so k = Io × $\frac{10}{3}$ ................2

so from equation 1 when 100 m deep and 50 m deep

intensity = k × $\frac{1}{Deep}$

intensity = Io × $\frac{10}{3}$ × $\frac{1}{50}$

intensity = $\frac{Io}{15}$

and

intensity = Io × $\frac{10}{3}$ × $\frac{1}{100}$

intensity = $\frac{Io}{30}$

and

at intensity Io/100

intensity = k × $\frac{1}{Deep}$

$\frac{Io}{100}$ = Io × $\frac{10}{3}$ × $\frac{1}{D}$

D = 333.33 m

so depth = 333.33 m

3 0

3 years ago

8÷(3-1) _2 ×5-2<br>plssss help

Scilla [17]

Answer:

Step-by-step explanation:

You always start with the equasions in parenthesis. 3-1 is 2 and 8 divided by 2 is 4. Then you can move on to the next part of the eqasion. You start by subtracting 2 from 5 and then multiplying that by 2.then you add up the answers and you gat 8.

8 0

3 years ago

What is the least common multiple of 2, 20, and 10?

kaheart [24]

Answer:

Step-by-step explanation:

The least common multiple is 20 :)

6 0

3 years ago