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soldi70 [24.7K]
3 years ago
10

Simplify. Х+4/3x^2+7x - 20

Mathematics
1 answer:
pickupchik [31]3 years ago
8 0

Answer:4/3x²+8x−20

Step-by-step explanation:Combine Like Terms:

=x+

4

3

x2+7x+−20

=(

4

3

x2)+(x+7x)+(−20)

=

4

3

x2+8x+−20

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A string of length 160cm is cut in to 2 pieces, in the ratio 3:5<br> find the length of each piece​
Sindrei [870]

Answer:

one of them is 60cm long, the other is 100cm long.

Step-by-step explanation:

3+5=8

160/8=20

20 x 3 = 60

20 x 5 = 100

just to check : 60 + 100 = 160

hope this helps x

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6 0
3 years ago
Alexa and Daniel , two students of middle school together collected $20 from the students for annual function of their school .
Sergeeva-Olga [200]

Answer:

x + y = 20

Step-by-step explanation:

Let the amount collected by Alexa = $x

& the amount collected by Daniel = $y

Total amount collected = $20

Therefore,

x + y = 20

4 0
2 years ago
Ed bought 20 cupcakes 30% chocolate and the rest vanilla how many of each cupcake did he buy?
babymother [125]

Answer:

he bought 6 chocolate and 14 vanilla !

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Following are the number of grams of carbohydrates in a sample of 12-ounce espresso beverages offered at Starbucks. 6 , 9, 10, 2
marusya05 [52]

Answer:

x=6, 9, 10, 20, 22, 25, 27, 40 , 48, 59

i= 1,  2 , 3,  4,    5,   6,    7,   8,    9,    10

And as we can see here the position for x=40 is 8, so then we can calculate the percentile for 40 grams like this:

p=\frac{8}{10} *100 = 80

So the  the vale of 40 gr correspond to the 80th percentile of the data since accumulates 80% of the values below.

Step-by-step explanation:

We can define a percentile as "a value on a scale of 100 that indicates the percent of a distribution that is equal to or below it"

For this case we have the following data given:

6 , 9, 10, 20, 22, 25, 27, 40 , 48, 59

And we want to calculate the percentile for the value of 40 grams

Since the dataset is on increasing way there is no problem to calculate this percentile.

We see that we have a total of n =10 observations, and we can rank the position of each observation (i) like this:

x=6, 9, 10, 20, 22, 25, 27, 40 , 48, 59

i= 1,  2 , 3,  4,    5,   6,    7,   8,    9,    10

And as we can see here the position for x=40 is 8, so then we can calculate the percentile for 40 grams like this:

p=\frac{8}{10} *100 = 80

So the  the vale of 40 gr correspond to the 80th percentile of the data since accumulates 80% of the values below.

3 0
3 years ago
Which line is parallel to the line y=x+7
sattari [20]

Answer:

Any line with the same slope. In this case the slope is 1. For example, y=x+4 is parallel to y=x+7.

3 0
3 years ago
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