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Naya [18.7K]
3 years ago
15

I need help with this question i dont get it.

Mathematics
1 answer:
Vedmedyk [2.9K]3 years ago
6 0

Answer:

y = -16

Step-by-step explanation:

First lets handle the fractional y's:

\frac{5}{2}y - \frac{1}{2}y = \frac{4}{2}y\\

This can be reduced down to 2y. That is easier to work with. Next we will rewrite the equation using or new value for y:

35 + 2y = 3

Subtract 35 from both sides:

2y = -32

Next, divide both sides by 2

y = -16

Check our answer:

35 + \frac{5}{2}(-16) - \frac{1}{2}(-16) = 3

35 -40 + 8 = 3

-5 + 8 = 3

3 = 3

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I don't really know what to do for this one.
Colt1911 [192]
Let, Price of a shirt = x
Price of a Jeans = y

Equations would be: 4x + 3y = 150
x + 2y = 70
x = 70-2y

Substitute it into first equation, 
4(70-2y) + 3y = 150
280 - 8y + 3y = 150
-5y = -130
y = 130/5
y = 26

Substitute it into 2nd equation, 
x + 2(26) = 70
x = 70-52
x = 18

So, Cost of a Shirt = $18  &  Cost of a Jeans = $26

Hope this helps!
3 0
3 years ago
A farmer sells carrots and squash. A customer buys 1 pound of carrots and 1.5 ponds of squash for $7.00. Another customer buys 4
Otrada [13]

Answer:

$1.75

Step-by-step explanation:

1 pound of carrot and 1.5 pounds of squash cost $7.00.

1c + 1.5s = 7 ----------------- [ 1 ]

4.5 pounds of carrot and 1.75 pound of squash cost $14.00.

4.5c + 1.75s = 14 ----------------- [ 2 ]

<u>[ 1 ] x 4.5:</u>

4.5c + 6.75s = 31.5 ----------------- [ 1a ]

<u>[1a] - [2]:</u>

5s = 17.5

s = $3.50

<u>Sub s = 3.5 into [ 1 ]:</u>

1c + 1.5 (3.5)  = 7

1c + 5.25 = 7

1c = $1.75

8 0
3 years ago
Need help with this. Hope someone can help
ratelena [41]

First, convert all of the cm measurements to m measurements (so they are all the same unit measurement)

2000 cm = 20 m         800 cm = 8m    

<u>Total Perimeter </u>(Note that circumference of a semi-circle is 2 π r/2 = π r)

Add up the lengths of all of the outside edges. I am going to start on the top and move counter-clockwise:

40 + π (10) + 8 + 25 + 8 + (40 - 25 - 10) + 8 + 10 + 8 + π(10)

= 40 + 10π + 41 + (5) + 26 + 10π

= 112 + 20π

= 112 + 62.8

= 174.8

Answer: 174.8 m

<u>Total Area</u>

Split the picture into 5 sections (2 semi-circles, top rectangle, bottom left rectangle, and bottom right rectangle).  Find the area for each of those sections and then add their areas together to find the total area.

2 semi-circles is 1 Circle: A = π · r²  ⇒ A = π(20/2)² =  π(10)²  = 100π  ≈  314

top rectangle: A = L x w  ⇒  A = 40 x 20  = 800

bottom left rectangle: A = L x w  ⇒  A = 25 x 8  = 200

bottom right rectangle: A = L x w  ⇒  A = 10 x 8  = 80

Total = 314 + 800 + 200 + 80  = 1394

Answer: 1394 m²


3 0
3 years ago
How would I answer 1.75 times 6​
Yuki888 [10]

Answer:10.5

Step-by-step explanation:You just add 1.75 6 times.

4 0
3 years ago
Read 2 more answers
Juanita has 16 model cars and 48 model trains. What is the ratio of the wmber of trains to the member of cars?
svetoff [14.1K]

Answer:

1:3

Step-by-step explanation:

but thats not and answer

6 0
2 years ago
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