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lakkis [162]
3 years ago
12

There are 640 students at Smith middle school and 65% of them study a world language how many of the students do not study a wor

ld language
Mathematics
2 answers:
DENIUS [597]3 years ago
8 0
100-65= 35 
640 x 35 = 22400
22400/100= 224 
224 students don't study a language
jeyben [28]3 years ago
4 0
35% because it ask what students don't study languages and 640 is just extra information
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given that (y+2) (y+3) and (2y^2+1) are consecutive terms of an arithmetic progression, find the possible value of y​
mafiozo [28]

Answer:

<em>-3/2 and 1</em>

Step-by-step explanation:

Given the  arithmetic sequence  (y+2) (y+3) and (2y²+1), the common difference is gotten by taking the difference in their terms. For example if we have 3 terms T1, T2, T3... the common difference d = T2-T1 = T3-T2

From the  sequence given;

T1 = y+2, T2 = y+3 and T3 = 2y²+1

d = y+3-(y+2) = 2y²+1- (y+3)

open the parenthesis

y+3-y-2 = 2y²+1- y-3

1 = 2y²+1- y-3

1 = 2y²- y-2

2y²- y-2-1 = 0

2y²- y-3 =0

Factorize the resulting expression

2y²- y-3 =0

2y²- 2y+3y-3 =0

2y(y-1)+3(y-1) = 0

(2y+3)(y-1) = 0

2y+3 = 0 and y-1 = 0

2y = -3 and y =1

y = -3/2 and 1

<em>Hence the possible values of y are -3/2 and 1</em>

8 0
3 years ago
Chen rode his skateboard 3 3 4 miles in 3 4 of an hour. What was his average speed in miles per hour?
Sati [7]
The answer is 5 .

3 3/4 / 3/4 = 5
Hope this helps
7 0
3 years ago
Wht is the answer for 2/3+2/9
garik1379 [7]
2/3 = 6/9 So,

6/9 + 2/9 = 8/9

4 0
3 years ago
Read 2 more answers
Please help. 50 points on the line
Vadim26 [7]

Answer:some where from 65-75 feet

Step-by-step explanation:

6 0
2 years ago
If 5 slices of pizza cost $5:50 how much does 
kupik [55]

The first thing we must do for this case is to define variables.

We have then:

x: number of slices

y: total cost

We write the linear function that relates the variables.

We have then:

y = (\frac{5.50}{5}) * x

Then, we evaluate the number of slices to find the total cost.

-two slices cost:

We substitute x = 2 in the given equation:

y = (\frac{5.50}{5}) * 2\\y = 2.2

Answer:

two slices = 2.2 $

-ten slices cost:

We substitute x = 10 in the given equation:

y = (\frac{5.50}{5}) * 10\\y = 11

Answer:

ten slices = 11 $

-half a slice cost:

We substitute x = 1/2 in the given equation:

y = (\frac{5.50}{5}) * \frac{1}{2}\\y = 0.55

Answer:

half a slice = 0.55 $

6 0
3 years ago
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