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olchik [2.2K]
3 years ago
15

What is the area of the triangle? ANSWERS: A) 112 cm2 B) 56 cm2 C) 64 cm2 D) 48 cm2

Mathematics
2 answers:
Marianna [84]3 years ago
8 0

Answer:

A, 112cm

Step-by-step explanation:

That's the answer for the whole triangle

bonufazy [111]3 years ago
4 0

Answer:

B

Step-by-step explanation:

Area of a triangle = bh / 2 where b = base and h = height and we know that b = 14 and h = 8 so the answer is 14 * 8 / 2 = 56.

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Charlie runs 2 laps in 8 minutes. How many minutes will 9 laps take him?
Fofino [41]

Answer:

36 minutes

Step-by-step explanation:

We can write a ratio

2 laps           9 laps

-------------   = --------------

8 minutes     x minutes

Using cross products

2x = 8*9

2x = 72

Divide by 2

2x/2 = 72/2

x = 36 minutes

8 0
3 years ago
Krypton-91 is a radioactive substance that decays very quickly. The function Q(t)=Qoe^-kt models radioactive decay of krypton-91
Masteriza [31]
The "k" value should have units and should be negative.
k = -.07 / seconds
Half-Life = ln (.5) / k
Half-Life = ln (.5) / -.07
Half-Life = -.693147 / -.07
Half-Life = 9.9 seconds
(actually, wkpedia says half-life of Krypton 91 is 8.57 seconds)

elapsed time = half-life * log (bgng amt / end amt) / log (2)
elapsed time = 9.9 * log (100 / 10) / 0.30102999566
elapsed time = 9.9 * 1 / 0.30102999566
<span><span>elapsed time = 9.9 * 3.3219280949 </span>
</span><span><span><span>elapsed time = 32.8870881395 </span> </span> </span>
<span>elapsed time = 32.89 seconds (rounded)

Source:
http://www.1728.org/halflife.htm

</span>
6 0
3 years ago
Read 2 more answers
What is the area of the following circle?
satela [25.4K]

Answer:

Look up this on google area of circle with diameter of 8.

Step-by-step explanation:

It will be correct trust me

7 0
3 years ago
Michael is a real estate agent who sells a house. He received $5,250 for a 3% commission on the house. How much did the house se
Alborosie

Answer: $157.50

Step-by-step explanation:

$5250÷100=$52.50

52.50×3=$157.50

7 0
2 years ago
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The what test is used to determine whether a function is one to one
olga2289 [7]

Answer:

The Horizontal Line Test

Step-by-step explanation:

8 0
3 years ago
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