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fredd [130]
3 years ago
11

3y-y+8-2=20 combine like terms and solve

Mathematics
1 answer:
Flauer [41]3 years ago
4 0
3y - y + 8 - 2 = 20
3y - y = 2y
8 - 2 = 6
2y + 6 = 20
2y = 20 - 6
y = 10 - 3
the answer is: y = 7
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Sara is 6 feet 3 3/4in tall and Sam is 5 feet 6in. How much taller is Sara then Sam?
denpristay [2]

Answer:

9    3/4  inches

Step-by-step explanation:

If we are finding how much taller Sara is, we need to subtract

6 ft 3 3/4 - 5 ft  6in

I like to line up vertically

  6 ft 3 3/4

- 5 ft  6in

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We  need to borrow 1 ft and make it 12 inches


  5 ft 3+12  3/4

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  0     9    3/4  inches

3 0
3 years ago
Jayla is a salesperson. She sold a guitar for $96 and earned 20% commission. How much
dexar [7]

Answer:

$115.20

Step-by-step explanation:

Hi! We need to find 1% of 96 to multiply by 20.

96 / 100 = .96

Now we multiply by 20.

20 x .96 = 19.2.

Now, we add 19.2 to what she earned in the first place (96).

19.2 + 96 = 115.20

Hope this helps!

4 0
3 years ago
Find the value of W that makes quadrilateral PQRS a parallelogram.
mestny [16]

to be a parallelogram its front sides must be equal to each other

so, we equalize the length of two sides that are face to face

\begin{gathered} 5w-25=w+15 \\  \\  \end{gathered}

and solve for w

\begin{gathered} 5w-w=15+25 \\ 4w=40 \\ w=\frac{40}{4} \\  \\ w=10 \end{gathered}

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6 0
1 year ago
Help for final I’d appreciate it!
mihalych1998 [28]

Answer:

y=76 degree(being vertically opposite angle)

y+x=180 degree(being linear pair)

76+x=180

x=180-76

x=104 degree

x=z(being vertically opposite angle)

104=z

therefore z=104 ,y=76,x=104

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
If a data set has ssr = 400 and sse = 100, then the coefficient of determination is
BARSIC [14]
To solve this problem you must apply the proccedure shown below:

 1. You have that the <span>data set has SSR=400 and SSE=100

 2. Therefore you have </span><span>the coefficient of determination is:

 r</span>²=SSR/SSTO

 SSTO=SSR+SSE

 3. Then, when you substitute the values, you obtain:

 SSTO=400+100
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 r²=400/500

 4. So, you have that the result is:

 r²=0.8

 Therefore, as you can see,  the answer for the exercise shown above is: <span> the coefficient of determination is 0.8</span>
 
3 0
3 years ago
Read 2 more answers
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