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Dafna11 [192]
3 years ago
7

8 - 4 (1/8r - 3 1/2)

Mathematics
1 answer:
Juli2301 [7.4K]3 years ago
5 0
8-4(1/8r-3.5) Distribute -4
8-0.5r+14 Combine Like terms
22-0.5r Solved
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MUST BE CORRECT ANSWER HELP ASAP
Nina [5.8K]

Answer:

40287600 = B. 4 x 10^{7}

Step-by-step explanation:

<u>We first have to do the multiplication of the numbers given:</u>

19 * 2,120,400

=> 40287600

<u>Now we have to figure out how many digits are after the number 4:</u>

4, 0 2 8 7 6 0 0

7 digits

Meaning that we need an exponent of 7 for it to be in scientific notation, giving us with the answer B. 4  x 10^{7}

6 0
3 years ago
I need to go 1,373 miles but the plane travels at 575 miles per hour. how long would it take me to get to my destination?
-BARSIC- [3]

Answer:2.38782608695652173913043478260869565217

Step-by-step explanation:

you divide 1373 by 575

4 0
3 years ago
Simplify the expression in detail plz
gayaneshka [121]
<span>(18<span>t<span><span>​^2</span><span>​​ </span></span></span>+ 9<span>t^<span><span>​2</span><span>​​</span></span></span>) + (−7t −3t) + 20

</span><span><span>27<span>t<span><span>​^2</span><span>​​ </span></span></span>− 10t + 20</span><span>
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5 0
3 years ago
Use the quadratic formula to solve 2x^2=5x+6. Leave your answer in radical form. Show all of your work!
Westkost [7]

Answer:

In radical from 169/50 , 177/200

Step-by-step explanation:

Given:

2x^2=5x+6\\\\2x^2-5x-6=0\\\\Where, a=2 , b=-5 , c=-6

Find:

Value of x

Computation:

Using quadratic formula:

\frac{-b\±\sqrt{b^2-4ac} }{2a}\\\\By\ putting\ all\ value\\\\ \frac{-(-5)\±\sqrt{(-5)^2-4(2)(-6)} }{2(2)}\\\\ \frac{5\±\sqrt{25+48} }{4}\\\\ \frac{5\±8.54 }{4}\\\\\frac{5+8.54 }{4},\frac{5-8.54 }{4} \\\\3.38 , 0.885

Value of x 3.38 , 0.885

In radical from 169/50 , 177/200

8 0
3 years ago
Megan and Lily each pay $750 a month for the apartment they share. Kevin lives by himself and pays 1.8 times as much rent a mont
marysya [2.9K]

Answer:

Im not good at math

Step-by-step explanation:

8 0
2 years ago
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