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Elan Coil [88]
3 years ago
8

Shown here is a mathematical step taken when solving an equation. Identify the mathematical reason or property used to simplify

from the first step to the second step. 8D=56. D=7

Mathematics
1 answer:
Ann [662]3 years ago
7 0

Answer:

D. Division Property of Equality

Step-by-step explanation:

Given that 8D = 56, to find the value of D, the property of equality that needs to be applied here would be the one that would make both sides equal by performing the same operation on both sides of the equation.

Thus:

Applying the the Division Property of Equality, we would divide both sides by 8.

\frac{8D}{8} = \frac{56}{8}

D = 7

This will leave you with D standing alone. Of which value is 7.

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Solve each equation <br> For points!!
Whitepunk [10]

Answer:

X = 13

X = 13

X = 13

X = 98

X = 8

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8 0
3 years ago
( GIVING 50 POINTS FOR THIS AND WIOLL GIVE BRAINLIEST ) Write and solve an equation for the situation.
Ira Lisetskai [31]

Answer:

Width is 10

Length is 18

Step-by-step explanation:

Perimeter is calculated as 2(w+l) or w+w+l+l. When you put those two numbers into the equation 2(10+18) or 10+10+18+18, you get the exact same answer of 56, and since 10 is eight less than 18, it would be the width.

6 0
3 years ago
Read 2 more answers
Can someone PLEASE explain cos and sin?!
DIA [1.3K]
Yes.

If you have a RIGHT triangle with a 29-degree angle in it, and you
divide the length of the leg adjacent to the angle by the length of the
hypotenuse, then it doesn't matter whether the triangle is drawn on
the head of a pin or on a piece of paper that reaches from the Earth
to the Moon, the quotient of (adjacent)/(hypotenuse) will always be
the same number ... about 0.875 .

That number is a property of every 29-degree angle, no matter the size
of the right triangle that it's in.  It's called the cosine of 29 degrees.

If you were to divide the leg opposite the 29-degree angle (instead of
the adjacent leg) by the length of the hypotenuse, you'd get a different
number ... about 0.485 .  That number is also a property of every 29-degree
angle, no matter the size of the triangle around it.  That one is called
the sine of 29 degrees.

I just used 29 degrees as an example.  Every angle has a sine and
a cosine, and a few other things too. 

If you have an angle, there's no easy way to calculate its sine or its
cosine.  You just have to look them up.  They're in tables in books,
or on line (just put 'cosine 29' in Google), and if you have a calculator,
they're probably on your calculator too.

You don't know yet what these are good for, or what you can do with
them.  That'll be coming up in math before you know it !

So the easiest answer to your question is:

Every angle has properties, characteristics, and aspects of its
personality that you never notice until you really get to know it. 
They're called the sine, the cosine, the tangent, the cotangent,
the secant, and the cosecant.  They're all numbers, and every
angle has a full set of them !
6 0
3 years ago
Read 2 more answers
2x^3-4x+6 turning points , end behavior, zeros
valentina_108 [34]
6x^2+2 there is no behavior zeros points Bc you can simplify this
8 0
3 years ago
Whats the answer to the problem y=-2x=2<br> y=7x+11
Dennis_Churaev [7]

Answer:

\left(7x+11\right)\circ \left(7x+11\right)=-2x

Step-by-step explanation:

\mathrm{Find\:}y\:\circ \:y=-2x\:\mathrm{given}\:y=7x+11,\:y=-2x=2

y=7x+11

y=7x+11

\left(7x+11\right)\circ \left(7x+11\right)=-2x

5 0
2 years ago
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