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svlad2 [7]
3 years ago
6

The base of a trinagle is increased by 20% and it’s height is increased by 30%. By what percent is the area of the triangle incr

eased?
Mathematics
1 answer:
Molodets [167]3 years ago
4 0

Lets say the base is x and the height is y. The new base would be 1.2x and the new height would be 1.3y

Area of a triangle is base times height divided by 2:

1.2x*1.3y/2 = (1.2*1.3 + x*y)/2 = 1.56xy/2 = 0.78xy = 78% of xy

But a normal area would be 50% of xy

78% - 50% = 38%

ANSWER: 38% increase

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Is y=3x^2-x-1 a function
NARA [144]

Answer: Yes it is a function.

This is because any x input leads to exactly one y output.

The graph passes the vertical line test. It is impossible to draw a single vertical line through more than one point on the parabolic curve.

7 0
3 years ago
Aria and her children went into a bakery and will buy donuts and brownies. She must buy at least 6 donuts and brownies altogethe
laila [671]

Answer:

Inequality for donuts and brownies is;

d ≥ 1 ≤ b

Step-by-step explanation:

We are told that aria will buy donuts and brownies.

We are also told that, number of donuts is d while number of brownies is b.

We are also told that she must by at least a total of 6 donuts and brownies together. Which means that the sum of d and b must not be 6 or greater than 6.

So the inequality will be;

d + b ≥ 6

Thus, for the donut and brownies, inequality would be; d ≥ 1 ≤ b

4 0
3 years ago
Please answer if known - thnx so much
zheka24 [161]
The answer is 36. You can multiply top and bottom by 3, or cross multiply and divide.

3 0
3 years ago
Read 2 more answers
A store pays $20 for a hat. to make a profit the store prices the hat 60% higher. later a sale reduce the price by 10%. finally,
Maslowich

The clearance price of hat is $17.28

Step-by-step explanation:

Price paid by store = $20

Increment = 60% of price paid

Increment = \frac{60}{100}*20 = \frac{1200}{100}

Increment = $12

Increased price = 20+12 = $32

Sale = 10%

Discount amount = 10% of increased price

Discount amount = \frac{10}{100}*32=\frac{320}{100}

Discount amount = $3.2

Sale price = 32 - 3.2 = $28.8

Clearance sale = 40%

Discount of clearance sale = 40% of sale price

Discount = \frac{40}{100}*28.8=\frac{1152}{100}

Discount = $11.52

Clearance price = sale price - Discount of clearance sale

Clearance price = 28.8 - 11.52 = $17.28

The clearance price of hat is $17.28

Keywords: percentage, subtraction

Learn more about subtraction at:

  • brainly.com/question/729447
  • brainly.com/question/7297385

#LearnwithBrainly

6 0
3 years ago
HELP! HELP! plz help me. look at pic.
taurus [48]

Answer:

Hi! I'll help ya...

8(.75) + 4(3.00)

6 + 12

= 18

$18 is your answer.

I hope this helps you!

-Mikayla

3 0
3 years ago
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