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garik1379 [7]
3 years ago
13

Please help on question 5 I’m really confused and I have to hand this in an hour so please help !!!

Biology
1 answer:
serious [3.7K]3 years ago
3 0

Answer:

8 kg

Explanation:

Yeah. 8kg of chocolate! Seems so funny, but that is the answer for this problem.

...

Please see the step-by-step solution for this problem in the picture attached below.

Hope this can help you. Have a nice day!

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Given;
            x + y + z = 140 meters


According to the proportion theorem,

\frac{x}{40} = \frac{y}{30}

Solving for x, using cross multiplication:

\frac{x}{1} = \frac{40y}{30}

Similarly,

x/40 = z/35

solving for z by cross multiplication,

z = 35x/40
z = 7x/8

Now, the third proportions,
y/30 = z/35

Solving for y,

y = 30z/35
y = 6z/7

x + y + z = 140

 4y/3 + 6z/7 +  7x/8 = 140

(224y + 144z + 147x)/168 = 140

224y + 144z + 147x = 23520

Substitutoing z = 7x/8,

224y + (144 × 7x/8) + 147x = 23520

224y + 126x + 147x = 23520

224y + 273x = 23520
Now,
Substitute y = 3x/4

(224×3x/4) + 273x = 23520

168x + 273x = 23520

441x = 23520

x = 53.33

Now,
We know that
y = 3x/4
so,
y = 40

And,
z = 7x/8
Z = 46.66

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3 years ago
I'LL GIVE BRAINLIEST (If i can)
schepotkina [342]

Answer:

1 is a risk 3 is a benifit!

Explanation:

Hope this is right and helps

7 0
2 years ago
Read 2 more answers
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