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Iteru [2.4K]
3 years ago
12

Translate the following phrase to a mathematical expression: a number times fifteen.

Mathematics
2 answers:
crimeas [40]3 years ago
8 0

Answer:

it could either be n15

15n

because a number multiplied by 5 is

n15

but in mathematics a number comes before a letter when writing a mathematical expression

andre [41]3 years ago
8 0

Answer:

The answer is n15

Hope this helps!!!

Please mark as brainliest

Step-by-step explanation:

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PLEASE SOLVE IT WITH EXPLANATION!!<br>DONT TAKE POINTS :)<br>​
zloy xaker [14]

Step-by-step explanation:

We are asked to simply (2√5 + 3√2)². Using formula: (a + b)² = a² + b² + 2ab. Let's say 2√5 = a, 3√2 = b. So,

→ (a + b)² = a² + b² + 2ab

→ (2√5 + 3√2)² = (2√5)² + (3√2)² + 2(2√5)(3√2)

We are aware about the fact that root means 1/2 and square of root means 2/2 that is 1. Using this we get:

→ (2√5 + 3√2)² = 4(5) + 9(2) + 2(2√5)(3√2)

Solve the brackets, to do so first put the like terms in one box.

→ (2√5 + 3√2)² = 4(5) + 9(2) + 2(2*3)(√5)(√2)

Solve the rest calculations.

→ (2√5 + 3√2)² = 20 + 18 + 2(6)(√10)

→ (2√5 + 3√2)² = 38 + 12√10

Option (a) (38 + 12√10) is the correct option.

4 0
3 years ago
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Help me, this is math and I need to this this extension.
Gnom [1K]

Applying pythagorean theorem:-

\\ \sf\longmapsto 8^2-5^2=b^2

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\\ \sf\longmapsto b=\sqrt{39}

\\ \sf\longmapsto b=6.24

5 0
3 years ago
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Is that correct ????
Travka [436]
Yes I believe it is :)
7 0
3 years ago
Help plea I need a good grade or my dads going to kill me!!!!
lapo4ka [179]

Answer:

b

Step-by-step explanation:

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A<br> Find the value of x. Your answer must be exact.<br> 30<br> 9
OLEGan [10]
Tan30=9/x so it will be 9((3)^1/2)
4 0
3 years ago
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