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3 years ago

Choose the correct answer in scientific notation.

Mathematics

2 answers:

vladimir2022 [97]3 years ago

8 0

Answer:

B. 1.55 x 106

Step-by-step explanation:

This is an example of the distributive property. In order to turn it back to the regular form, you need to do this:

3.40

1.85

--------

1.55

Don't forget to put the 106!

3.40

1.85

--------

1.55 x 106

You can do it in both forms and get the same answer. It depends on what the question asks for or whichever form you like best/you think is the easiest.

erastova [34]3 years ago

5 0

Answer:C 5.25 x 106

Step-by-step explanation:hope this helps you plz rate me brainest and thx byeeee

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Andrew [12]

The first thing thing you must do is create an equation for this problem. Remembering that 7.75% = 0.0775

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Now, all you have to do is solve it. You will first have to start with the numbers in the parenthesis using the order of operation (PEMDAS).

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3 years ago

Which of the following are solutions to 2x2 – 8x - 90? Select all that apply.

Bond [772]

Answer:

x=-5, x=9

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$2x^{2} -8x-90$

equate to zero

$2x^{2} -8x-90=0$

$2=-1\\b=-8\\c=-90$

substitute in the formula

$x=\frac{-(-8)\pm\sqrt{-8^{2}-4(2)(-90)}} {2(2)}$

$x=\frac{8\pm\sqrt{784}} {4}$

$x=\frac{8\pm28} {4}$

$x=\frac{8+28} {4}=9$

$x=\frac{8-28} {4}=-5$

therefore

The solutions are x=-5, x=9

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3 years ago

David's height is 5.94 feet. His sister is 5.47 feet tall. What is the difference in their heights?

Tema [17]

Answer:

0.47

Step-by-step explanation:

5.94 - 5.47 = 0.47

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3 years ago

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Anarel [89]

8.95 times 1.20 = 10.74

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3 years ago

If W is the midpoint of line vx and wx= 7.8, find the length of line vx

Maru [420]

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4 years ago

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