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Lesechka [4]
2 years ago
7

Simplify and find the reciprocal of 7/6 x -3/28

Mathematics
2 answers:
Basile [38]2 years ago
7 0

Answer:

Simplified it is -1 / 8

Reciprocal is 8/-1 or -8

Step-by-step explanation:

Multiply

7/6 x -3/28

= 7 x -3 / 6 x 28

= -21 / 168

Simplify

-21/21 = -1

168/21 = 8

-21/168 = -1/8

Find reciprocal

The reciprocal of a fraction is the numerator and denominator reversed

-1/8 > 8/-1

8/-1 is the same as -8

Hope this helps!

Snowcat [4.5K]2 years ago
6 0

Answer:

The product of \frac{7}{6} and -\frac{3}{28} is -\frac{1}{8}. The reciprocal is \frac{8}{-1}.

Step-by-step explanation:

We have to find the product of \frac{7}{6} and -\frac{3}{28} before we find the reciprocal.

Before we do this though, we need to review a few words and their definitions.

First, the reciprocal of a fraction is when the numerator becomes denominator and the denominator becomes numerator.

Now we're ready to solve \frac{7}{6} *-\frac{3}{28}:

Step 1: Use this rule: \frac{a}{b} *\frac{c}{d} =\frac{ac}{bd}.

\frac{7*-3}{6*28}

Step 2: Simplify 7 × - 3 to - 21.

\frac{-21}{6*28}

Step 3: Simplify 6 × 28 to 168.

\frac{-21}{168}

Step 4: Move the negative sign to the left.

-\frac{21}{168}

Step 5: Simplify \frac{21}{168} to \frac{1}{8}.

-\frac{1}{8}

Now that we've found the product, we now must find the reciprocal.

Now using what we know and the process to find the reciprocal.

We can use that knowledge to find it:

-\frac{1}{8} =\frac{8}{-1}

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(-2, -8) Imagine the point (-2,8) being reflected in a mirror, where the x axis is the mirror. Since the point is 8 above the x axis, the reflected point will be 8 below.
5 0
2 years ago
What is the radius of a circle with a circumference measuring 24 pie cm?
Tpy6a [65]
By the way, it's pi, not pie. just wanted you to know as you may lose marks in tests for spelling (but i may be wrong)

we know circumference is pi multiplied by the diameter.
the diameter is 2x the radius
we can re-arrange the first fact to get:
diameter (or 2x radius) = circumference divided by pi.
since the circumference is 24pi we can cancel off pi from the circumference (24pi) and pi.
now we have the diameter = 24
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radius=12cm
5 0
2 years ago
(x-3y+ 3z=-4<br><br> 2x+3y-z =15<br><br> (4x-3y- z=19<br><br> - What is the solution to the system?
lesya [120]

Answer:

x=5,y=1 and z=-2

Step-by-step explanation:

We are given that system of equation

x-3y+3z=-4 (I equation)

2x+3y-z=15  (II equation )

4x-3y-z=19  (III equation )

Equation II multiply by 3 then add  with equation I

Then, we get

7x+6y=41 ....(Equation IV)

Subtract equation II from equation III then we get

2x-6y=4  (equation V)

Adding equation IV and equation V then, we get

9x=45

x=5

Substitute x=5 in equation V then, we get

2(5)-6y=4

10-6y=4

6y=10-4=6

y=1

Substitute x=5 and y=1 in equation then, we get

5-3(1)+3z=-4

2+3z=-4

3z=-4-2=-6

z=\frac{-6}{3}=-2

Hence, the solution for the given system of equation is given by

x=5,y=1 and z=-2

7 0
3 years ago
Is 21/2+(-1/2)=-3 true?
natta225 [31]

Answer:

It's False!

Step-by-step explanation:

4 0
3 years ago
Solve 2x - 8 + 3x &gt; 5x - 4 also if you can plz explain
WITCHER [35]

Answer:

No solution

Step-by-step explanation:

2x - 8 + 3x > 5x - 4

2x + 3x - 8 > 5x - 4

5x - 8 > 5x - 4

-5x +8 > -5x  +8

----------------------

0x > 4

This is no solution, as there is no 'x' value.

(0x just means there isn't anything left, I put that in order to show there wasn't anything.)

7 0
3 years ago
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