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Afina-wow [57]
2 years ago
13

PLEASE HELP

Mathematics
1 answer:
mihalych1998 [28]2 years ago
8 0

Answer: The height is 4.472

Step-by-step explanation: That formula is Heron's formula.

Where "s" is calculated like this:

s = (a + b + c) / 2

In this case:

a = 14

b = 12

c = 6

replacing:

s = (14 + 12 + 6) / 2

s = 16

Now we calculate the area:

A ^ 2 = 16 * (16−14) * (16−12) * (16−6)

A ^ 2 = 1280

A = 35.777

The area of the triangle is:

A = b * h / 2

In this case we will take the base as the longest side of the triangle, that is to say = 14

Thus:

h = A * 2 / b

h = 35.777 * 2/16

h = 4.472

So the height is 4.472

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Stephen places £950 in a bank account that pays 1.6% simple interest per year.
Gemiola [76]
A) 15.20
b) 965.2

i hope this is right (^^)
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4 years ago
6. Ray, Mike, and Jon collected a total of 500 postage stamps from around the world. Ray
Lena [83]

Answer: Jon collected 173 stamps.

6 0
3 years ago
Dylan deposited 15,000 in an account that pays 7.50% simple interest for 3.5 years. What is the ending balance in the account
ladessa [460]

The ending balance in the account is $18,937.5

Step-by-step explanation:

Simple Interest Equation (Principal + Interest)  is A = P(1 + rt), where:

  • A is the future value of the investment/loan, including interest
  • P is the principal investment amount  
  • r is the annual interest rate in decimal)
  • t is the time the money is invested or borrowed for

Dylan deposited 15,000 in an account that pays 7.50% simple interest for 3.5 years. We need to find the ending balance in the account

∵ Dylan deposited 15,000 in an account

∴ P = 15,000

∵ The account pays 7.5% simple interest for 3.5 years

∴ r = 7.5% = 7.5 ÷ 100 = 0.075

∴ t = 3.5

- Substitute all of these values in the rule above

∴ A = 15,000(1 + 0.075 × 3.5)

∴ A = 15,000(1 + 0.2625)

∴ A = 15,000(1.2625)

∴ A = 18,937.5

The ending balance in the account is $18,937.5

Learn more:

You can learn more about interest in brainly.com/question/11149751

#LearnwithBrainly

7 0
3 years ago
Algebra help? 2 questions will give brainliest!!
galina1969 [7]
1) x + 3.2= -3.5
subtract 3.2 from both sides
x+ 3.2 - 3.2= -3.5 - 3.2
it cancels out on the left
x= -6.7


2) 8/9x= 32
divide both sides by 8/9
8/9x ÷ 8/9= 32 ÷ 8/9
it cancels out on the left

to divide on the right, multiply fraction by its reciprocal/inverse

x= 32 * 9/8
multiply numerators (top)

x= (32*9)/8
x= 288/8
x= 36


ANSWER: 1) x= -6.7; 2) x= 36

Hope this helps! :)
5 0
3 years ago
Find m/_A<br><br> 66°<br> 71°<br> 21°<br> 26°
krek1111 [17]
<span>The sum of the measures of the internal angles in the quadrilateral is 360°.
</span>
Therefore:
x+5+2x-1+84+x+8=360\\\\4x+96=360\ \ \ |-06\\\\4x=264\ \ \ |:4\\\\x=66
Answer: x = 66°.
<span />
7 0
4 years ago
Read 2 more answers
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