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Paraphin [41]
3 years ago
5

Isabella spends $4.87 on paintbrushes and paint. How many of each item does she buy? Explain how you found your answer

Mathematics
1 answer:
Rina8888 [55]3 years ago
5 0

Answer:Answer: Isabella buys 2 paintbrushes and 3 jars of paint.

Step-by-step explanation:

Isabella can buy together 5 paintbrushes ( p ) and jars of paint ( p ) : j + p = 5, She can`t buy 4 items ( because 4 * $0.99 = $3.96 < $4.87 ) and she also can`t buy 6 items ( 6 * $0.95 = $5.70 > $4.87 ). So: p = 5 - j. Another equation is: 0.95 * ( 5 - j ) + 0.99 j = 4.87, 4.75 - 0.95 j + 0.99 j = 4.87; 0.04 j = 0.12; j = 0.12 : 0.04; j = 3, p = 5 - 3 = 2. We can prove it: 0.95 * 2 + 0.99 * 3 = 1.90 + 2.97 = 4.87.

(Hope this helps!!!!)

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A map is made of a park. The scale from the park to the map is 36 mi to 6 cm. The length of Great Oaks Trail is 4.5 cm on this m
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Answer:

Salamander Trail is longer than Great Oak Trail

Step-by-step explanation:

The given parameters are;

The scale of the map is 36 mi = 6 cm

The length of Great Oak Trail = 4.5 cm

The scale of a different map is 24 mi = 3 cm

The length of Salamander Trail = 3.5 cm

Therefore, we have;

The actual length of Great Oak Trail based on the first map is given as follows;

36 mi = 6 cm

6 cm = 36 mi

1 cm = 36 mi/6 = 6 mi

4.5 cm = 4.5 × 6 mi = 27 mi

The actual length of Salamander Trail based on the second  map is given as follows;

24 mi = 3 cm

3 cm = 24 mi

1 cm = 24 mi/3 = 8 mi

3.5 cm = 3.5 × 8 mi = 28 mi

Therefore, Salamander Trail with an actual length of 28 mi is longer than Great Oak Trail which has an actual length of 27 mi.

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3 years ago
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OLga [1]
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6 0
3 years ago
On Saturday, local hamburger shop sold a combined total of 380 hamburgers and cheeseburgers. The number of cheeseburgers old was
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3 years ago
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If T: (x, y) → (x - 3, y + 2), then T -1: (x,y) → _____.
tatyana61 [14]

Answer:

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Step-by-step explanation:

we know that

The rule of the transformation T is equal to

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y'=y+2 ----> y=y'-2

The rule of the inverse of transformation T -1 is equal to

T-1: image → pre-image

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2 years ago
Your company recently made a purchase of 25 identical tables. The purchase price after adding 5% sales tax was $1,706.25. You la
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You'll be paying less for the tables because you're ordering fewer tables: 20 instead of 25.


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8 0
2 years ago
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