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ser-zykov [4K]
2 years ago
12

HELP ME WITH THIS PLEASEEE

Mathematics
1 answer:
ziro4ka [17]2 years ago
6 0

Answer:

0.125%

Step-by-step explanation:

area of square

10*10=100

area of triangle

(5*5)/2=12.5

\frac{12.5}{100}=0.125

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Mhm keep going my friend
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During one month, a homeowner used 500 units of electricity and 100 units of gas for a total cost of $333. The next month, 400 u
Mice21 [21]

Answer: the cost per unit of gas is $0.28

Step-by-step explanation:

Let x represent the cost per unit of electricity.

Let y represent the cost per unit of gas.

During one month, a homeowner used 500 units of electricity and 100 units of gas for a total cost of $333. This is expressed as

500x + 100y = 333 - - - -- - -- - -- -1

The next month, 400 units of electricity and 150 units of gas were used for a total cost of $286. This is expressed as

400x + 150y = 286 - - - - - - - - - --2

Multiplying equation 1 by 400 and equation 2 by 500, it becomes

200000x + 40000y = 133200

200000x + 75000y = 143000

Subtracting, it becomes

- 35000y = - 9800

y = - 9800/- 35000

y = 0.28

Substituting y = 0.28 into equation 2, it becomes

400x + 150 × 0.28 = 286

400x = 286 - 42 = 244

x = 244/400 = 0.61

7 0
3 years ago
Calculate the answer to the appropriate number of significant figures. (do not convert to scientific notation) 6.47 x 64.5
telo118 [61]

Answer:

6.47 \times 64.5 \\  = 417.315

4 0
3 years ago
Read 2 more answers
How close is the t-value to the corresponding z-value (at the bottom of the column for<br> d.f.= ∞)?
MrMuchimi
Yoy multiply 55 and 99 and get 5000 and than you times it an get your answer
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3 years ago
A girl has 10 skirts, 6 blouses, and 8 pairs of shoes. How many different skirt-blouse-shoe outfits can she wear?
dedylja [7]

Answer:

480 different skirt-blouse-shoe outfits

Step-by-step explanation:

the product rule applies:

(10)(6)(8)=480

Hope this helps

7 0
3 years ago
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