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Morgarella [4.7K]
3 years ago
5

Evaluate the expression for x=-2 and y=9. xy + y =

Mathematics
1 answer:
Kitty [74]3 years ago
4 0

Answer:

-18 + 9 = -9

Step-by-step explanation:

-2 x 9 = -18

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Malcolm planted two trees in his yard. One tree is 50 inches tall and grows
Evgen [1.6K]
First make an equation for first tree
Y=2x+50
Then second tree
Y=1x+59
Then put them equal to eachother
2x+50=1x+59
Solve by subtracting 1x and then subtracting 50
Answer= x=9
9 months
3 0
3 years ago
An item was sold at a loss of 20%. Had it been sold for Rs 3000more then the profit would have been 10%. What is the cost price
vagabundo [1.1K]

Answer:

Cost Price = Rs 10000

Step-by-step explanation:

Assume:

Cost of the item = x

Item was sold at a loss of 20%:

Loss = 20% of x = 0.2x

Item sold = x - 0.2x = 0.8x

Item sold at a profit of 10%:

Profit = 10% of x = 0.1x

item sold = x + 0.1x = 1.1x

Solve:

Difference = 1.1x - 0.8x = 0.3x

0.3x = Rs 3000

x = Rs 3000 ÷ 0.3

x = Rs 10000

3 0
3 years ago
The Annual County Carnival is being held is summer and will last 5 and 1/2 days. Use this information and other given informatio
BigorU [14]

Answer:

6p - 65 -200\geq 1000

p\geq 211\ people

Step-by-step explanation:

To solve this problem you must follow the following procedure:

1. Group the costs:

$ 200 per day

$ 65 per day

2. Group the profits

$ 6 per person

3. The difference between the costs and the profit must be greater than or equal to $ 1000.

Profit - cost\geq 1000

4. We call p the number of people who climb the roller coaster.

So:

6p - 65 -200\geq1000

5. We clear p:

6p\geq 1000 +65 +200

p\geq \frac{1265}{6}\\\\p\geq 210.83

p\geq 211\ people

211 people or more must climb the roller coaster to make a profit

3 0
4 years ago
HIgh school math. WILL REPORT IF ANSWER IS Wrong
TiliK225 [7]
Aren’t you going a little over board on reporting someone who’s answer is wrong? You literally don’t even know the answer yourself. Just say the answer is wrong and not report them.
7 0
3 years ago
A square pyramid has a base side length of 8 feet. The height of each lateral face is 12 feet. What is the surface area of the p
Alenkasestr [34]
8x8 is 64 for the base. Then, 12x8 is 96 divided by 2 is 48, so the surface area of one side triangle is 48x4 is 192 and add the base of 64 and you get 256.
8 0
3 years ago
Read 2 more answers
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