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Vesna [10]
3 years ago
7

Independent Practice

Mathematics
1 answer:
kykrilka [37]3 years ago
4 0

Answer:

C.

0.5; 13.5; 1093.5

Step-by-step explanation:

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After Halloween, a variety store had some costumes regularly priced at $20.50 on sale for 20% off the regular price. A few weeks
Diano4ka-milaya [45]
20.50 * 0.8 = $16.40

16.40 * 0.4 = $6.56

Final selling price = $6.56
6 0
3 years ago
Pythagorean theorem
Talja [164]

Answer:

b=20 yards

Step-by-step explanation:

15^2+x^2=25^2

225+x^2=625

x^2=400

x=20

5 0
2 years ago
84.87 is 115% of what
elena-s [515]
Divide 84.87 by 1.15, and you get 73.8

Then you can check your work by multiplying 73.8 by 1.15 and you get 84.87
6 0
3 years ago
Solve each prportion. (2/y-4)=(y+3/4)
vampirchik [111]

Answer:

y = 5, -4

Step-by-step explanation:

To solve proportions you cross-multiply.

\frac{2}{y-4} =\frac{y+3}{4} \rightarrow 2\times4 = (y-4)\times(y+3) \rightarrow 8=y^2-y-12

Now that we have 8 = y^2 - y - 12, we must make the entire trinomial equal to 0 by subtracting 8 from both sides.

y^2 - y - 20 = 0

Factor the trinomial.

(y - 5)(y + 4) = 0

Make both factors equal to 0 to solve for both values of y.

  • y - 5 = 0 --> y = 5
  • y + 4 = 0 --> y = -4

y = 5, -4

4 0
2 years ago
A toy in a toy shop is in the shape of a triangular pyramid. The area of the base of the toy is 14 square centimeters and it has
Tamiku [17]
I think it’s 84 you multiply 14 and 12 then divide by 2 since it is a triangular prism
8 0
3 years ago
Read 2 more answers
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