What is (2ab-a+2) - (-ab-2)

Mathematics

1 answer:

Greeley [361]1 year ago

8 0

Step-by-step explanation:

iknow but its hard to expalin

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(2.3 x 105)(1.5 x 104) in scientific notation plssss ASAP

zhenek [66]

By using scientific notation we calculated (2.3 $\times$ 10⁵)(1.5 $\times$ 10⁴) we got 345 $\times$ 10⁷.

Given that,

(2.3 $\times$ 10⁵)(1.5 $\times$ 10⁴)

By using scientific notation

The scientific notation allows us to express extremely large or extremely small numbers by multiplying them by single-digit integers and by 10 raised to the power of the corresponding exponent. The exponent is either positive or negative depending on how big or little the number is.

Now, we calculate

(2.3 $\times$ 10⁵)=2.5 $\times$ 100000=230000

(1.5 $\times$ 10⁴)=1.5 $\times$ 10000=15000

Now,

=230000 $\times$ 15000

=3450000000

=345 $\times$ 10⁷

Therefore, By using scientific notation we calculated (2.3 $\times$ 10⁵)(1.5 $\times$ 10⁴) we got 345 $\times$ 10⁷.

To learn more about scientific notation visit: brainly.com/question/18073768

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1 year ago

1/2x-9=-25 what is your answer

Elodia [21]

First, let's only the expression with x stay on the let side: let's add 9 to both sides of the equation.

$\frac{1}{2} x-9+9=-25+9$
which is
$\frac{1}{2}x=-16$

now, let's multiply everything by 2:

$\frac{2}{2} x=-16*2$
$x=-32$

so the answer is -32!

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2 years ago

Answer fast please .

MArishka [77]

I think it's D. The area of A is k2 times the area of rectangle B

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2 years ago

Three lizards eat 63 grams of food each day. How many grams of food would you expect 5 lizards to eat

zhenek [66]

Answer: 105 grams

Step-by-step equation: they each eat 21 grams a day

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