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3 years ago

What is equivalent to the product of 6 x 10 to the 9th power + 3 x 10 to the 7th power

Mathematics

1 answer:

Tems11 [23]3 years ago

7 0

The sum 6×10⁹ + 3×10⁷ is
6×10⁹ +0.03×10⁹ = 6.03×10⁹

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11. Explain how to evaluate the expression 9 +(45 x 2) = 10.

Dmitry_Shevchenko [17]

The Answer Is 18

Order Of Operation laws says that you must do the parentheses first, 45x2.

45x2=90

The next thing you must do is divide 90 by 10 since division is before addition.

90/10=9

Now combine like terms.

9+9=18

7 0

3 years ago

Read 2 more answers

Penelope determined the solutions of the quadratic function by completing the square. F(x) = 4x2 8x 1 –1 = 4x2 8x –1 = 4(x2 2x)

Ymorist [56]

By solving the quadratic equation using completing the square method we got that Penelope should have added 4 to both sides instead of adding 1.

<h3>What is quadratic equation ?</h3>

Any equation of the form $ax^2+bx+c=0$ where x is variable and a, b, and c are any real numbers where a ≠ 0 is called quadratic equation .

Given work of Penelope is

$\begin{aligned}&f(x)=4 x^{2}+8 x+1 \\&-1=4 x^{2}+8 x \\&-1=4\left(x^{2}+2 x\right) \\&-1+1=4\left(x^{2}+2 x+1\right) \\&0=4(x+2)^{2} \\&0=(x+2)^{2} \\&0=x+2 \\&-2=x\end{aligned}$

Now we can see that Penelope determined the solutions of the quadratic function by completing the square. so he must have been done as following

$\begin{aligned}&f(x)=4 x^{2}+8 x+1 \\&-1=4 x^{2}+8 x \\&-1=4\left(x^{2}+2 x\right) \\&-1+4=4\left(x^{2}+2 x+1\right) \\&3=4(x+2)^{2} \\&\frac{3}{4} =x+2)^{2} \\&\frac{\pm\sqrt3}{2} =x+2 \\&\frac{-2\pm\sqrt3}{2} =x\end{aligned}$

By solving the quadratic equation using completing the square method we got that Penelope should have added 4 to both sides instead of adding 1.

To learn more about quadratic equations visit : brainly.com/question/1214333

8 0

2 years ago

If a bank offers a savings that pays simple interest rate of 3% and you deposit $550.00 into the account, how much interest will

vitfil [10]

Answer:

SI=P*T*R/100

=550*3*2/100

=$33

5 0

3 years ago

For each pair of jeans i will buy 3 sweaters. how many sweaters can i buy if i have $255

Zepler [3.9K]

You can buy 85 sweaters. Plze mark me brainiest:)

7 0

3 years ago

Write 4 3/7 as a decimal.

Citrus2011 [14]

Hi!

There are two ways to do this.

1. Start with the first part of the decimal, (4.) then divide 3/7 to get the second part.

3/7 = 0.43

4.43

2. Convert the mixed number 4 3/7 to a fraction.

4 x 7 = 28
28 + 3 = 31

31/7

Now convert that into a decimal.

31/7 = 4.43

The answer is 4.43

Hope this helps! :)

3 0

3 years ago

Read 2 more answers