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SVEN [57.7K]
4 years ago
15

Which of the following expressions are equivalent? Please explain so I can understand.

Mathematics
1 answer:
dolphi86 [110]4 years ago
5 0

Answer:

B and D

Step-by-step explanation:

Expression B = 1/x^{-1} = 1/ (1/x) = x

Expression D = x^{1/3} x^{1/3} x^{1/3}

= x^{1/3 + 1/3 + 1/3}

= x^{1}

= x

as shown above the both the value of B and D are equal to x and hence the expressions are equivalent

You might be interested in
Find the missing length of the triangle.
allsm [11]

Hey there!

Solve using pythagoras theorem (it's given that is triangle is right angled. Pythagoras theorem only works in the case of right triangles) ⇨ Hypotenuse² = Base² + Altitude ²

Here,

Base = 9 mm

Hypotenuse = 15 mm

Altitude = b

Hypotenuse² = Base² + Altitude ²

15² = 9² + b²

225 = 81 + b²

225 - 81 = b²

144 = b²

√144 = b

<u>1</u><u>2</u><u> </u><u>mm </u>= b

Hope it helps ya!

3 0
3 years ago
The sum of two numbers is 24.The difference of their square is 144.what are the two numbers?​
dimulka [17.4K]

Answer:

9 and 16

Step-by-step explanation:

let the two numbers are X and Y

X+Y=24

X^2-Y^2=144

solve simultaneously

4 0
3 years ago
Find the value of X. 40,x
Vilka [71]

Answer:

x = 70°

Step-by-step explanation:

x = one of the congruent angles in the triangle

Given angle measure: 40°

x = ? + ? = 180 - 40 = 140

x = 70

4 0
3 years ago
Read 2 more answers
A TRIANGLE HAS SIDE LENGTH 3, 8 AND 9. FIND THE ANGLE MEASUREMENT FOR THE ANGLE CROSS FROM THE SIDE WITH LENGTH OF 8.
LekaFEV [45]

Answer:

Answer in file:

Step-by-step explanation:

4 0
3 years ago
what is the mistake in this problem and why is it wrong? 15+(√9•7)÷13 = 15+(3•7)÷3 = 15+(21)÷3 = 36+3 =12
Serggg [28]

[Edit:}

Okay! So after you have 15+(21)÷3, you have to remember PEMDAS.

PEMDAS is the order in which you solve equations.

1. Parentheses: you solve everything in the parentheses first, all while following the rules of PEMDAS

2. Exponents: after you solve the things in the parentheses, you do the exponents.

3. Then you do Multiplication or Division, solving in the order from left to right.

4. After, you do Addition or Subtraction, solving in the order from left to right.

So using PEMDAS, we'll solve 15+(21)÷3.

We do division before addition, so 21/3 is 7.

Then you add 15 to 7 and get 22 as your final answer.

Hope this helps!

7 0
3 years ago
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