Find the indicated side of the triangle.

Mathematics

1 answer:

Paul [167]3 years ago

5 0

Answer:

Step-by-step explanation:

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Solve 12x = 4(x + 5)

evablogger [386]

12x=4(x+5) (multiplying 4 by each argument in the parenhesis)
12x=4x+20 /-4x both sides
8x=20 /:8 divide both sides by 8
$x= \frac{20}{8}= 2 \frac{4}{8}=2.5$

15x-3(3x+4)=6 (-3 times each argument in the parenthesis)
15x-9x-12=6
6x-12=6 /+12 both sides
6x=18 /:6 divide both sides by 6
x=3

3x-5x+10=36
-2x+10=36 /-10 both sides
-2x=26 /:(-2) divide both sides by -2
x=-13

2(x+3)=x+10
2x+6=x+10 /-x
x+6=10 /-6
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3 years ago

Jensen spends $18.00 for every 72 text messages she sends. How many messages can Jensen send for $1.00

Rasek [7]

4 texts because 18 dollars for 72 texts
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3 years ago

Using rectangles whose height is given by the value of the function at the midpoint of the rectangle's base, estimate the area

LuckyWell [14K]

What it means is, check the picture below.

so, the first part shows two rectangles... the rectangle goes from 1.0 to 1.6, so it has a width of 0.6.

and the height comes from the middle point, or 1.3 is f(1.3) = (1.3)² or 1.69.

so you get the area of the first rectangle, 0.6 * 1.69

and then you do the same for the second rectangle, it goes from 1.6 to 2.0, so is of width 0.4, and its height comes from the middle 1.8 point, is f(1.8) = (1.8)², or 3.24.

so its area is 0.6 * 3.24

then you add the areas of the rectangles to approximate the area under the parabola.

so, you'd do the same for the other part of the picture with the four rectangles.

the first rectangle of the four for example, has a width of 0.2 and a height of f(1.1) = (1.1)² or 1.21.