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3 years ago

Find the sum (3/7m-3+4n)+(2/7m-2m+6)

Mathematics

1 answer:

aleksley [76]3 years ago

4 0

Answer:

(5/7)m + 2n + 3

Step-by-step explanation:

Rewrite 3/7m as (3/7)m for added clarity, also 2/7m as (2/7)m.

Adding (3/7)m and (2/7)m results in (5/7)m.

Next, combine -3 and 6, which yields 3.

I expected that there'd be only one term in m in both quantities. (3/7)m - 3 + 4n does have only one term, but (2/7)m - 2m + 6) seems to have two m terms. I will assume that you actually meant (2/7)m - 2n + 6).

Combining like terms, we get (5/7)m + 3 + 4n - 2n, or

(5/7)m + 2n + 3

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2 years ago

Give the domain and range.

alexgriva [62]

Answer:

c. domain: {-2, 0, 2}, range: {-1, 1, 3}

Step-by-step explanation:

Given:

There are three points on the graph.

Locate the $x$ and $y$ values of the points on the graph.

The points are $(-2,-1),(0,1),\textrm{ and }(2,3)$

Domain is the set of all possible $x$ values. Here, the $x$ values are -2, 0 and 2.

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7 0

2 years ago

Share £54 into the ratio 1:3

Marina86 [1]

Answer:

£13.5

£40.5

Step-by-step explanation:

Let the amount of shares be x and 3x

Therefore,

$x + 3x = 54 \\ \\ 4x = 54 \\ \\ x = \frac{54}{4} \\ \\ x = 13.5 \\ \\ 3x = 3 \times 13.5 = 40.5$

5 0

2 years ago

A point P has coordinates (-8, -2). what are its new coordinates after reflecting point P across the y-axis?

just olya [345]

Answer:

(-8,2)

Step-by-step explanation:The y-value does not change, only the x-value becomes positive.

5 0

2 years ago

-6+x/x^4 limit at x →0

Jlenok [28]

Answer:

not existing

Step-by-step explanation:

$\frac{ - 6 + x}{ {x}^{4} }$

lim x goes to 0 is

$\frac{ - 6 + 0}{ {0}^{4} } = \frac{ - 6}{0}$

so not exist

I'm not sure if u mean that or this

7 0

2 years ago