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sleet_krkn [62]
3 years ago
7

Ratios, 

Mathematics
1 answer:
masha68 [24]3 years ago
4 0
1. 196 to 7=28.14
2.65 out of 105=1.61
3.112:140=0.8
4. 0.11 to 1.21=11
5. 19:76=0.25
6. 18 to 27=0.66
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Simplify nine square root of two minus three square root of seven plus square root of eight minus square root of twenty eight.
avanturin [10]

Answer:

11\sqrt{2} - 5\sqrt{7}

Option (A) is the correct answer.

Step-by-step explanation:

9\sqrt{2} - 3\sqrt{7} + \sqrt{8} - \sqrt{28}

Now, \sqrt{8} = \sqrt{2 \times 2 \times 2} = 2\sqrt{2}

\sqrt{28} = \sqrt{2 \times 2 \times 7} = 2\sqrt{7}

∴ 9\sqrt{2} - 3\sqrt{7} + \sqrt{8} - \sqrt{28}

= 9\sqrt{2} - 3\sqrt{7} + 2\sqrt{2} - 2\sqrt{7}

= 9\sqrt{2} + 2\sqrt{2} - 3\sqrt{7} - 2\sqrt{7}

= 11\sqrt{2} - 5\sqrt{7}

Therefore option (a) is the correct answer.

6 0
3 years ago
Read 2 more answers
I do not understand this question and it will be kind if you help a kid in need
Nimfa-mama [501]

Answer:

x = \frac{mn(q-p)}{n-m}

Step-by-step explanation:

collect the fractional terms on the left side of the equation and other terms on the right side

subtract \frac{x-n}{n} from both sides

\frac{x-m}{m} - \frac{x-n}{n} + p = q

subtract p from both sides

\frac{x-m}{m} - \frac{x-n}{n} = q - p

We require the fractions to have a common denominator of mn

multiply the numerator/denominator of the first fraction by n and the numerator/denominator of the second fraction by m

\frac{n(x-m)}{mn} - \frac{m(x-n)}{mn} = q - p

distribute and simplify the numerators of the fractions

\frac{nx-nm-mx+mn}{mn} = q - p

\frac{nx-mx}{mn} = q - p

factor out x from each term on the numerator

\frac{x(n-m)}{mn} = q - p

multiply both sides by mn

x(n - m) = mn(q - p)

divide both sides by (n - m)

x = \frac{mn(q-p)}{n-m} → n ≠ m






5 0
4 years ago
Write each word phrase as an algebrale
dedylja [7]

66) ten less than a number

Let the number be n

= n - 10

67) the product of x and y

= x × y or xy

68) The algebraic expression for ten less than n

= n - 10

Must click thanks and mark brainliest

8 0
3 years ago
Which binomials is a factor of 16x^2 + 40xy + 25y^2?
Valentin [98]
Answer: (4x + 5y)^2

Factor the expression. 
6 0
3 years ago
Will mark brainliest!
FrozenT [24]
<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷ Find the multiplier : 15/100 = 0.15

Multiply by the original

150 x 0.15 = 22.5

<h3><u>✽</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

4 0
3 years ago
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