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vredina [299]
4 years ago
10

Nathaniel writes the general form of the equation gm = cm + rg for when the equation is solved for m. He uses the general form t

o solve the equation –3m = 4m – 15 for m. Which expression shows what Nathaniel will actually evaluate? 4 + 15 – 3 4 – 15 + 3 –15 –
Mathematics
2 answers:
madam [21]4 years ago
8 0

Answer:

The required expression is m=\frac{-15}{-3-4}.

Step-by-step explanation:

The general form of the equation is

gm=cm+rg             .... (1)

We need to solve this equation for m.

Subtract cm from both the sides.

gm-cm=rg

Taking out the common factor.

m(g-c)=rg

Divide both sides by (g-c).

\frac{m(g-c)}{g-c}=\frac{rg}{g-c}

m=\frac{rg}{g-c}               ..... (2)

The given equation is

-3m=4m-15            ..... (3)

From (1) and (3), we get

g=-3,c=4,rg=-15

Substitute g=-3, c=4, rg=-15 in equation (2).

m=\frac{-15}{-3-4}

Therefore the required expression is m=\frac{-15}{-3-4}.

denis23 [38]4 years ago
8 0

Answer:

C

Step-by-step explanation:

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timurjin [86]

The <em><u>correct answer</u></em> is:

A 180° rotation followed by a translation 1 unit down.

Explanation:

The points are mapped as follows:

J(3, 4)→J'(-3, -5)

K(3, 1)→K'(-3, -2)

L(1, 1)→L'(-1, -2)

A 180° rotation maps a point (x, y) to (-x, -y).  This would map

J(3, 4)→(-3, -4)

K(3, 1)→(-3, -1)

L(1, 1)→(-1, -1)

The difference between these points and the image points are that each y-coordinate of the image is 1 lower than these.  This means a translation 1 unit down would result in the image points.

7 0
3 years ago
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When factored, the trinomials x2 + 4x − 21 and x2 + 11x + 28 have one binomial factor in common. What is this factor?
Gelneren [198K]

Answer:

x + 7

Step-by-step explanation:

x2 + 4x − 21

set equal to 0

x2 + 4x − 21 = 0

factor

(x - 3) (x + 7)

x2 + 11x + 28

set equal to 0

x2 + 11x + 28 = 0

factor

(x + 4) (x + 7)

6 0
4 years ago
Given the following functions: f(x) = x2 – 5 and g(x) = x - 3.<br> Find f(g(x))
Amiraneli [1.4K]

Answer:

f(g)x))= x^2 -6x +4

Step-by-step explanation:

first, plug in g(x) into f(x): f(g)x)) =(x-3)^2 -5

then, you simplify the (x-3)^2 into (x-3)(x-3): f(g)x))= (x-3)(x-3) -5

when you distribute the two (x-3) you end up with: f(g)x))= x^2 -6x +9 -5

finally, you combine like terms and subtract 5 from 9 and your final answer is : f(g)x))= x^2 -6x +4

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Answer:

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Step-by-step explanation:

divide 72.8 by 6.5 to get the other two sides. Then you will have all four sides. From there you can add all four sides. 6.5 + 6.5 + 11.2 + 11.2 = 35.4. Hope that helps!

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3 years ago
N(n+1)+2n+1<br> expand and simplicity
meriva

Answer:

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Step-by-step explanation:

n(n+1) + 2n + 1

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= (n×n) + (n×1) + 2n + 1

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<h3>ii) collect like terms</h3>

= n² + 3n +1

6 0
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