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vlada-n [284]
3 years ago
14

Loon tried to solve an equation step by step. 12.18

Mathematics
1 answer:
PolarNik [594]3 years ago
3 0
They should have multiplied by 2 instead of dividing by 2. the correct solution is w=60
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Please help! I’ll also give brainliest! Thank you!
irina [24]

Answer:

The solution is in the attached file below

7 0
2 years ago
Read 2 more answers
The mean age of Mr Jasmi,Miss Haslinda and their three children is 38 years. The mean age of their three children is 18 years. C
DedPeter [7]
Answer: 68

Explanation:

Let x be the age of Mr Jasmi
y be the age of Miss Haslinda
a + b + c be the age of the 3 children

We can write:
(x + y + a + b + c)/5 = 38

But:
(a + b + c)/3 = 18
a + b + c = 18(3)
a + b + c = 54

Substitute this value to our first equation

(x + y + 54)/5 = 38
x + y + 54 = 38(5)
x + y + 54 = 190
x + y = 190 - 54
x + y = 136

Thus:
Mean age of (mr jasmi and miss Linda) = (x+y)/2

But x + y = 136

=> mean age = 136/2 = 68
4 0
2 years ago
Write <br> 6<br> :<br> 9<br> :: <br> 2<br> :<br> 3<br> as a fraction proportion.
Firdavs [7]
6/9 (2/3) and 2/3. Hope this helps you.
3 0
3 years ago
Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1.
Sedbober [7]

Answer:

B)Y=3

Step-by-step explanation:


7 0
3 years ago
Read 2 more answers
A culture started with 5,000 bacteria. After 2 hours, it grew to 6,500 bacteria. Predict how many bacteria will be present after
lesya [120]
This can be expressed as exponential growth of the form:

f=ir^t, f=final amount, i=initial amount, r=common ratio (rate), t=time

In this case we are given the point (2, 6500) and i=5000 so we can solve for the rate...

6500=5000r^2  divide both sides by 5000

1.3=r^2  take the square root of both sides and note that we know r>0

r=1.3^(1/2) so our equation becomes:

f=5000(1.3)^(1/2)^t  and knowing that (a^b)^c=a^(b*c) we can say:

f=5000(1.3)^(t/2)  so for t=18

f=5000(1.3)^9

f≈53022  (to nearest whole bacteria)
7 0
3 years ago
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