3 years ago

Simplify the following expression and write

Mathematics

1 answer:

lisov135 [29]3 years ago

6 0

Answer:

$3.4*10^{1}$

Step-by-step explanation:

When multiplying you use the number with least amount of significant figures in it since both 0.00045 and 0.0015 have two significant figures in them our final answer will have two significant figures in it. So the to solve and express in scientific notation we simply multiply:

(0.00045)(500,000)

0.0015 = .3375 but in scientific notation to two significant figures we write:

$3.4*10^{1}$

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Solve the inequality (picture)

drek231 [11]

Answer:

3rd choice

Step-by-step explanation:

Add 6 to both sides to get 5x >= 15, or x >=3. This is the 3rd choice.

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3 years ago

What is the total cost of a pair of jeans that are priced $40.00 if there is a 6.5% sales tax? $40.65 $42.60 $44.00 $46.50

-Dominant- [34]

A pair of jeans = $40.00
There is a 6.5% sales tax.

First change the % into a decimal by moving the decimal point two spaces to the left.
0.065

Multiply that by 40.00 to find out how much the tax is.

40 × 0.065 = 2.6

Now add the tax to the initial price.
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2 years ago

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Given f(x) =3x-7, find f(x+1)+f(1)

ELEN [110]

Answer:

3x - 8

Step-by-step explanation:

To find f(x + 1) substitute x = x + 1 into f(x)

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Similarly

f(1) = 3(1) - 7 = 3 - 7 = - 4

Hence

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3 years ago

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Dominik [7]

Answer:

Step-by-step explanation:

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2 years ago

If 20 is added to the number, the absolute value of the result is 6.

Aleonysh [2.5K]

Answer:

(20+x)*2=x-6

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check:

x=-46

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3 years ago

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