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Vera_Pavlovna [14]
3 years ago
13

Write each answer in Scientific notation 8x10^3 + 6.45 x 10^4

Mathematics
1 answer:
ELEN [110]3 years ago
4 0

Answer:

7.25*10^4 let me know if it is wrong

Step-by-step explanation:

MRK ME BRAINLIEST PLZZZZZZZZZz

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Simplify – w + 1 – (–8w)
d1i1m1o1n [39]

Answer:

7w + 1

hope it helped. :)

7 0
3 years ago
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Kia is saving money to buy a Six Flags ticket. She worked for 6 hours at the library and earns the same amount each hour. Her gr
Nesterboy [21]

Answer:

She earns 5.5 dollars per hour at the library

Step-by-step explanation:

I am going to assume that the questions is "how much she earns per hour at the library?"

Let's call x the amount of dollars earn by hour at the library. We know that she worked for 6 hours, thus she made 6x dollars.

Later her grandma gave her 20 dollars and she has now 53 dollars.

Let's write the equation and solve it

Amount earned + Amount given by her grandma = 53

6x+20=53\\6x=33\\x=\frac{33}{6}\\x=5.5

Thus, based on this information we would have that Kia earns 5.5 dollars per hour.

6 0
3 years ago
Each number in a list of numbers can be found using the expression 6 − 23(n − 1), where n is a positive integer that gives the p
sleet_krkn [62]

Answer:

Step-by-step explanation:

7 0
3 years ago
What is the unit rate of 56 ounces for every 2 cans
Natalija [7]

Answer:

26 ounces per can

Step-by-step explanation:

8 0
3 years ago
She worked a total of 15 hours. If she makes $15 per hour tutoring and $9 per hour at the grocery store and made a total of $159
Ugo [173]

Answer:

11 hours she worked at the grocery store

Step-by-step explanation:

assuming,

the number of hours worked at tutoring = x

the number of hours worked at grocery store = y

which means,

the amount she made at tutoring = x* $15

the amount she made at grocery store = y*$9

we have 2 equations

<em>total number of hours</em>

1) x+y= 15  

<em>total amount she earned</em>

2) x* $15+ y* $9= $159

From equation 1

x+y= 15  

x=15-y

<em>we replace this x value in equation 2</em>

x* $15+ y* $9= $159

(15-y)* $15+ y* $9= $159

(15*15)- 15y+9y=159

225-6y=159

225-159=6y

66=6y

66/6=y

<u>11=y</u>  <em>the number of hours she worked at grocery store. </em>

<em>we place y=11 in our derived x equation</em>

x=15-y

x=15-11

<u><em>x=4 </em></u><em>the number of hours she worked at tutoring. </em>

3 0
3 years ago
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