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Serggg [28]
3 years ago
14

The base of a triangle is 3 cm and the height is 5 cm. What mathematical operation(s) described must be performed in order to fi

nd the area of this triangle?
A) multiply 3 and 5
B) add 3 and 5, then divide the sum by 2
C) multiply 3 and 5, then divide the product by 2
D) use the Pythagorean theorem to find the missing sides of the triangle and then add the three sides together
Mathematics
2 answers:
Hatshy [7]3 years ago
8 0
C, because Formula of right triangle is base multiply by height and then divide the sum by 2
Firdavs [7]3 years ago
6 0

Answer:

C.

Step-by-step explanation:

To find the area of a triangle, one must multiply the base by the height then divide by 2.

So, the area of this triangle would be 7.5

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Corinne has a job selling magazines. She earns $7.50 per hour plus 20% of the total amount of her sales. She also gets an allowa
maw [93]
PART A
Coefficient
Coefficient h is 7.50
Coefficient s is 0.20

Variable
h and s

Constant
40

PART B
7.50h + 0.20s + 40
= 7.50(25) + 0.20(300) + 40
= 187.5 + 60 + 40
= 287.5
She earns $287.5

PART C
Yes, the coefficient of h would change to 9, the rests are still the same. Because she's no longer receive 7.50 per hour, and start earning 9 per hour, so the coefficient should change.
The expression would be
9h + 0.20s + 40
4 0
3 years ago
A square has an area of 121 square centimetres.<br> What is its perimeter?
Karolina [17]

Answer:

  44 cm

Step-by-step explanation:

The area of a square is the square of the side length. This means the side length is the square root of the area.

  s = √A = √(121 cm²) = 11 cm

The perimeter of a square is the sum of its side lengths. There are 4 equal-length sides, so the perimeter is 4 times the length of one side:

  P = 4s = 4(11 cm)

  P = 44 cm

The perimeter of the square is 44 cm.

3 0
2 years ago
Read 2 more answers
If the original quantity is 8 and the new quantity is ​,2 what is the percent​ decrease?
azamat

Answer: 75%

Step-by-step explanation:

75% of 8 is 6.

8 was decreased by 6 to get 2.

8 was decreased by 75% of its initial value to get 2.

Hope this helped!

3 0
3 years ago
Read 2 more answers
What is G if B = A × (1+G)T and B = 3,455, A = 1,969, and T = 8? Answer as a rate in decimal format so that 12.34% would be ente
zubka84 [21]

Answer:

G=0.0728

Step-by-step explanation:

The expression given is:

B=A*(1+G)^T

This expression has the format of a compounded interest at a rate G for a time T. If B = 3,455, A = 1,969, and T = 8, the value of the rate G is determined by:

3,455=1,969*(1+G)^8\\G = \sqrt[8]{\frac{3,455}{1,969}}-1\\G=0.0728

The rate G is 0.0728.

7 0
3 years ago
Toko follows a budget to buy supplies to paint his room. He spends 1/2 of his budget on a roller, a tray, and tape. He spends $1
Natasha_Volkova [10]
The answer is $36.

B - budget
So the calculation is as following:
B= \frac{1}{2}B + 12.27 +  \frac{3.82}{ \frac{2}{3} } = \frac{1}{2}B + 12.27 + \frac{3.82*3}{2}=   \frac{1}{2}B + 12.27 +5.73
B= \frac{1}{2} B + 18
B- \frac{1}{2}B = 18
\frac{1}{2}B = 18
B = 18*2=36
3 0
3 years ago
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