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ehidna [41]
4 years ago
12

The area of a triangle is 80cm² and its base is 8cm. If its height is (6+k) cm, find the value if k.

Mathematics
1 answer:
Leviafan [203]4 years ago
8 0

Answer:

K=14

Step-by-step explanation:

A=1/2*b*h

80=1/2*8*(6+k)       multiply by 2 on both sides

160=8*(6+k)            distribute by 8

160=48+8k              subtract 48 from both sides

112=8k                     divide by 8

14=K

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What is the answer for -5x^2=-500 by factoring the quadratic equation?
evablogger [386]

Answer:

x=10

Step-by-step explanation:

I think..i tired

 

Divide both sides by 55.

{x}^{2}=-\frac{500}{5}x2=−5500

2

 

Simplify  \frac{500}{5}5500  to  100100.

{x}^{2}=-100x2=−100

3

 

Take the square root of both sides.

x=\pm \sqrt{-100}x=±√−100

4

 

Simplify  \sqrt{-100}√−100  to  \sqrt{100}\imath√100ı.

x=\pm \sqrt{100}\imathx=±√100ı

5

 

Since 10\times 10=10010×10=100, the square root of 100100 is 1010.

5 0
3 years ago
Write the standard equation of a circle with center (0,0) and radius 7
lana66690 [7]

Answer:

x^2 + y^2 = 49

Step-by-step explanation:

For center (h,k) and radius r, eqution of the respective circle is

(x-h)^2 + (y-k)^2 = r^2

7 0
4 years ago
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Hi what is 4x3-1 x20=<br><br><br><br><br><br> Don’t mind this
krek1111 [17]

Answer:

4 x 3 - 1 x 20 = -8

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3 0
3 years ago
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Evaluate 4x + 6 for x = 3. 18 13 49 36
scoray [572]

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18

Step-by-step explanation:

4(3)=12

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6 0
3 years ago
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There are 45 carpenters in a crew. 18 of the carpenters have children. What is the ratio of the number of carpenters to the numb
aev [14]
<h3>Answer is  5:3</h3>

==========================================================

Explanation:

There are 45 carpenters total. 18 have kids, so 45-18 = 27 do not have kids.

The ratio of the total to the number who don't have kids is 45:27. We write the numbers in the exact order mentioned. Divide both parts of that ratio by the GCF 9 to get the final answer of 5:3

This says that for every 5 carpenters total, there are 3 who don't have kids.

5 0
3 years ago
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