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Molodets [167]
3 years ago
11

Amy shops at two stores for a new sweater. The sweater at the first store costs $10 less than four times the cost,c, of the swea

ter at the seconds store. The sweater at the first store costs &80. Write and solve an equation to find the cost of the sweater at the seconds store
Mathematics
1 answer:
wolverine [178]3 years ago
6 0

Answer:

The cost of the sweater in the second store is $22.50

Step-by-step explanation:

From the problem we know that......

$80 = 4c - $10

There for.......

4c = $80 + $10

4c = $90

c = $90 / 4

c = $22.50

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Which table represents a linear function?
aliina [53]
In each table, x increases by 1. We start with x = 0 and stop with x = 3. So we will focus on the y columns of each table as those are different.

Let's move from left to right along the four tables.

For the first table, we go from y = 1 to y = 2. That's an increase of 1
Sticking with the first table, we go from y = 2 to y = 4. The increase is now 2
Since the increase is not the same, this means the table is not linear. The y increase must be constant. We can rule out choice A

Choice B can be ruled out as well. Why? Because...
the jump from y = 0 to y = 1 is +1
the jump from y = 1 to y = 3 is +2
The same problem comes up as it did with choice A

Choice C has the same problem, but the increase turns into a decrease half the time. We go from y = 0 to y = 1, then we go back to y = 0 so the "increase" is really a decrease. We can think of it as a negative increase. Regardless, this allows us to rule out choice C

Only choice D is the answer. Each time x goes up by 1, y goes up by 2. Therefore the slope is 2/1 = 2
4 0
3 years ago
Read 2 more answers
A ladder, 14 feet long, is leaning against
PolarNik [594]

Answer:

12.12ft

Step-by-step explanation:

14² = 7² + x²

x² = 14² - 7²

x² = 196 - 49

x² = 147

x = √147

x = 12.12ft

6 0
3 years ago
Read 2 more answers
The hypotenuse of a right triangle is 25 cm, and the shorter leg is 15 cm. Find the length of the other leg.
nataly862011 [7]

Use the Pythagorean theorem

a^2 + b^2 = c^2

a^2 + 15^2 = 25^2

a^2 + 225 = 625

a^2 = 400

a = 20

Answer: 20 cm

Hope this helps!!

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5 0
3 years ago
I need help with 5 thanks
Mars2501 [29]

For every 3 cups of peanuts there are 2 cups of chocolate

9/3 = 3 so 3*2 = 6

For 9 cups of peanuts there are 6 cups of choclate

3 0
4 years ago
Ayudenmeee por favor
Dmitry [639]
B because I’m just guessing
8 0
3 years ago
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