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ddd [48]
3 years ago
10

Please solve this equation much appreciated

Mathematics
2 answers:
torisob [31]3 years ago
6 0

Answer:

x=4, y=6, z=5

Step-by-step explanation:

x = 8/2 = 4

y = 12/2 =6

z = 10/2 = 5

Hope this helps!

Please mark brainliest if you think I helped! Would really appreciate!

damaskus [11]3 years ago
4 0

Answer:

x=4 y=6 z=5

Step-by-step explanation:

Since 3 is half of 6, all you have to do is divide every term by 2 to get the correct value for each variable

Hope this helped :)

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A dartboard has 20 equally divided wedges and you are awarded the number of points in the section of your dark lands in if you a
Leto [7]

Answer:

Pr =0.75

Step-by-step explanation:

Given

See attachment for wedge

Required

P(x > 5)

The sample space of the wedge is:

S = \{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20\}

n(S) = 20

The outcomes greater than 5 are:

x > 5 = \{6,7,8,9,10,11,12,13,14,15,16,17,18,19,20\}

n(x>5) =15

So, the probability is:

Pr =\frac{(n(x>5)}{n(S)}

This gives:

Pr =\frac{15}{20}

Pr =0.75

6 0
3 years ago
Substitute the given values into the formula and solve for the unknown variable. If necessary, round to one decimal place
Stells [14]

Answer:

4=H

Step-by-step explanation:

H is unknown

180=4x7x5+2x5xH

180=140+10H

40=10H

4=H

7 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
A tank full of water is leaking at a constant rate for 15 minutes. The equation
kupik [55]

Answer:

C. There were 500 liters in the tank when the leak started, and it is decreasing by 8 liters per minute.

Step-by-step explanation:

-8x is the rate of the leak and 500 is the initial value for water in the tank.

6 0
2 years ago
Consider this right triangle with given measures what is the unknown length
DIA [1.3K]

Answer:

b = 9

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

b² + 12² = 15²

b² + 144 = 225 ( subtract 144 from both sides )

b² = 81 ( take the square root of both sides )

b = \sqrt{81} = 9

4 0
3 years ago
Read 2 more answers
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