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3 years ago

Convert 3 2/7 into improper fractions 21/7 23/7 41/7 None of the above

Mathematics

1 answer:

Vesnalui [34]3 years ago

5 0

Hello,

The correct answer is B.

Further explanation: The first step is to multiply 3 by 7. That gives you 21, then add 21+2. Then put your denominator at the bottom.

Workspace:

3 * 7

=21

21 + 2

=23/7

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Help please im lost and not good in math

Damm [24]

Answers: a = 49
b = 10
c = 105

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3 years ago

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X,y and z are three consecutive even numbers if y^2 - 2 = 2x + 5Z find x,y and z

Rama09 [41]

Answer:

6, 8, 10

Step-by-step explanation:

x y and z are three consecutive even numbers

it means that you can write y = x + 2

and z = y + 2 = x + 4

$y^2-2=2x+5z\\ (x+2)^2-2=2x+5(x+4)\\x^2+4x+4-2=2x+5x+20$

$x^2+4x+2=7x+20\\x^2+4x+2-7x-20=0\\x^2-3x-18=0\\(x+3)(x-6)=0(x=-3\ or \ x=6)$

so the solutions are

x = 6

y = 8

x = 10

6 0

3 years ago

Read 2 more answers

5/7 x 21/25 what is the answer to this???!!?!?!!!?

lbvjy [14]

Multiply the tops and multiply the bottoms
Aka
5*21
-------
7*25

And simplify

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3 years ago

LekaFEV [45]

Answer: 31.5 in.

Answer:

the answer is 13 cm

Step-by-step explanation:

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2 years ago

Carmin is trying to find the equation of a line that passes through the points (-1,16) and (5,88) . Does the equation y=12x+28 w

BartSMP [9]

Answer:

Yes! The equation, y = 12x + 28 , work.

Step-by-step explanation:

The line passes through points (-1, 16) and (5, 88)

The slope of the line = change in y ÷ change in x

i.e slope = $\frac{88 - 16}{5 - -1}$ = 12

Taking another point (x ,y) on the line;

Slope is $\frac{y - 16}{x - -1}$ = 12

y - 16 = 12x + 12

y = 12x + 12 + 16

y = 12x + 28

So the equation, y = 12x + 28, work!

3 0

3 years ago