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Aleks04 [339]
3 years ago
9

you are given eight golf balls. Seven of the golf balls have the exact same weight, but one ball is slightly lighter(you cannot

feel the difference). How can you find the lighter ball in only two weighing? Explain.
Mathematics
1 answer:
Inessa [10]3 years ago
6 0
7 weight exactly the same, therefore the 8th golf ball doesnt weigh the same as the 7. so the 8th ball is slightly lighter
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one thrid of fruits stalls are apples the rest of the fruit are oranges and pears there are 340 pears and 80 more oranges than a
Andrej [43]
1/3 of all=apples
2/3=rest=oranges+pears


pears=340
oranges=80+apples

ok

pears+oranges=2/3
apples=1/3
so pears+oranges=2(apples)
340+80+apples=2(apples)
minus apples
340+80=apples
420=apples

420 apples
420=apples=1/3 of total

420 times 3=1260 fruits total
8 0
2 years ago
22
Mrrafil [7]
Let the length of the rectangle is x. units , accordingly :

2.(x+3) = x×3.

2x + 6 = 3x.

x = 6 units is the answer :)
8 0
2 years ago
This is my last question it’s due at midnight can I please get help in a hurry
Sophie [7]

N = 9

explanation: If you tilt triangle FGH to where it matches triangle PQR, 9 is matched with N.

more help:

Q = G

10.5 = 7

P = F

H = R

4 = 6

9 = N

5 0
2 years ago
I need help with this. I don’t understand how to do this
Stolb23 [73]

Answer:

Read below ( Equal Square roots and non equal square roots)

Step-by-step explanation:

Finding square roots of of numbers that aren't perfect squares without a calculator.

Example: Calculate the square root of 10 ( ) to 2 decimal places.

Find the two perfect square numbers it lies between.

Divide 10 by 3. ...

Average 3.33 and 3. ( ...

Repeat step 2: 10/3.1667 = 3.1579.

A square root of a number is a value that, when multiplied by itself, gives the number. Example: 4 × 4 = 16, so a square root of 16 is 4. ... The symbol is √ which always means the positive square root.

If you still need help, I recommend you search this up.

Understanding square roots (video)

<h2>Good Luck</h2>
7 0
3 years ago
£440 is divided between David, Mark &amp; Henry so that David gets twice as much as Mark, and Mark gets three times as much as H
Lesechka [4]

Mark received £ 132

<em><u>Solution:</u></em>

Given that £440 is divided between David, Mark & Henry

Let "d" be the share of david

Let "m" be the share of mark

Let "h" be the share of henry

Total amount is 440

Therefore,

share of david + share of mark + share of henry = 440

d + m + h = 440 ------- eqn 1

<em><u>David gets twice as much as Mark</u></em>

d = 2m ----- eqn 2

<em><u>Mark gets three times as much as Henry</u></em>

m = 3h

h = \frac{m}{3}  ------ eqn 3

<em><u>Substitute eqn 2 and eqn 3 in eqn 1</u></em>

2m + m + \frac{m}{3} = 440\\\\\frac{6m + 3m + m}{3} = 440\\\\10m = 1320\\\\m = 132

Thus Mark received £ 132

8 0
3 years ago
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