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krek1111 [17]
3 years ago
11

Select all equivalent expressions

Mathematics
1 answer:
Mariulka [41]3 years ago
8 0

Answer:

B and D

Step-by-step explanation:

\huge \: ( \sqrt[6]{x} )^{10}  =  {x}^{ \frac{5}{3} }  \\  \\  \huge \: ( \sqrt[6]{x} )^{10}  = ( \sqrt[3]{x} )^{5}    \\  \\

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2) 3x + 4y = 8<br> 2x+y=42<br> a) (30, -19)<br> b) (31, -20)<br> c) (32,-22)<br> What is the answer
kirza4 [7]

Answer:

C

Step-by-step explanation:

We can solve simultaneous equations using substitution method, elimination method or graphical method. But for this purpose, we will be using the elimination method.

3x+4y=8 Equation 1

2x+y=42 Equation 2

Multiply Equation 1 by 2 and equation 2 by 3, so as to get the same coefficient for x

2(3x+4y=8)= 6x+8y=16 Equation 3

3(2x+y=42)= 6x+3y=126 Equation 4

Subtract equation 4 from 3, to eliminate x

6x-6x=0

8y-3y= 5y

16-126= -110

We now have 5y=-110

Divide both sides by 5,

y= -110/5

= -22

Substituting for y in equation 2

2x+(-22)= 42

2x= 42+22

2x=64

x= 64/2

= 32

(x, y)

(32, -22)

7 0
4 years ago
Help ASAP!!
Aleksandr [31]

Circumference of a circle - derivation

This page describes how to derive the formula for the circumference of a circle.

Recall that the definition of pi (π) is the circumference c of any circle divided by its diameter d. Put as an equation, pi is defined as

π

=

c

d

Rearranging this to solve for c we get

c

=

π

d

The diameter of a circle is twice its radius, so substituting 2r for d

c

=

2

π

r

If you know the area

Recall that the area of a circle is given by

area

=

π

r

2

Solving this for r

r

2

=

a

π

So

r

=

√

a

π

The circumference c of a circle is

c

=

2

π

r

5 0
3 years ago
Read 2 more answers
Demarco has 2.25 worth of nickels in his piggy prank. how many total nickels does he have
lidiya [134]

Answer:45 nickels

Step-by-step explanation:

If a nickel is $ 0.05 , than $ 2.25 divided by. $0.05 is 45.

3 0
3 years ago
Find the sector area.
ipn [44]

Answer:

D

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Which is the best estimate for the percent equivalent of 7/15
zzz [600]
An estimate for the percent equivalent of 7/15 is 46% i think
7 0
4 years ago
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