3 years ago

Check all the answers that are more precise than a weight of 180 pounds

Mathematics

1 answer:

Dimas [21]3 years ago

6 0

The answer would be A and B, because they can both be rounded to 180, and are more precise.

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what is the equation in slope-intercept form for the line that passes through (3, 7) and is perpendicular to 3x-5x=8

Galina-37 [17]

Answer:

$5x + 3y = 36$

Step-by-step explanation:

First we need to rewrite 3x-5y=8 in slope-intercept form.

$y = \frac{3}{5} x - \frac{8}{5}$

The slope of this line is

$\frac{3}{5}$

The line perpendicular to this line will have a slope that is the negative reciprocal of 3/5, which is

$m = - \frac{5}{3}$

This line passes through (3,7).

The equation is given by:

$y-y_1=m(x-x_1)$

We substitute the point and slope to get:

$y - 7 = - \frac{5}{3} (x - 3)$

We multiply through by 3 to get:

$3y - 21 = - 5(x - 3)$

Expand to obtain:

$3y - 21 = - 5x + 15$

$3y + 5x = 15 + 21$

$5x + 3y = 36$

6 0

3 years ago

I'm not sure to do this.. Help me please.. Thank you

Paraphin [41]

So our original equations would be..
$2y + 2(y - 4) = p \: (perimeter)$
$y \times (y - 4) = l \: (area)$

(a) perimeter in terms of y
$y = \frac{p + 8}{4}$

(b) area in terms of y
*I'm actually not sure about b.. sorry*

(c) if perimeter = 28, find length
$28 \div 4 = 7$
$7 \times 7 = 49$
$l (area)= 49$