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Irina-Kira [14]
2 years ago
13

Help! Expressions and equations

Mathematics
1 answer:
Dovator [93]2 years ago
5 0

Answer:

1. 16−6=10

2. 4⋅2+1

3. x÷25

4. y+8=40

Explanation:

This is an equation—two expressions are connected with an .This is an expression—no equal sign. This is an expression—no equal sign. This is an equation—two expressions are connected with an equal sign.

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Find the unknown length in the right triangle 27cm and 13 cm
Phoenix [80]

use pythagoras:

{c}^{2}  = \:   {b}^{2}  -  {a}^{2}

c^2 = (27)^2 - (13)^2

c^2 = 560

c = 23.6643....cm

3 0
3 years ago
If 110% of a number is 528, then the number is:
Anuta_ua [19.1K]

Answer:

c) 480

Step-by-step explanation:

Any percentage can be converted to a number ratio by dividing by 100%.

E.g. 100%/100% = 1

Following this concept, we can find the equivalent of 110% :

110%/100% = 1.1

Since 528 is 1.1 times the number we are looking for, we just need to divide 528 by 1.1 to find our number. This is because 1.1/1.1 = 1

528/1.1 = 480

Hope this helped!

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The variable in that expression is x

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Answer: A is the correct answer

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By drawing the hypotenuse of the shape. 
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