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3 years ago

Please help

Mathematics

1 answer:

Vika [28.1K]3 years ago

7 0

Answer:

- 3

Step-by-step explanation:

ap ex

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Vincent and Lauren started keeping track of their workouts. Vincent did 55 crunches the first week, and 80 crunches each week a

serg [7]

Answer: Vincent: 376

Lauren: 395

Step-by-step:

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4 years ago

Louis wants to carpet the rectangular floor of his basement. The basement has an area of 864 square feet. The width of the basem

Mama L [17]

2/3 x * x = 864
(2/3) x^2 = 864
x^2 = 864 * (3/2) = 1296
x = + sqrt 1296 = 36

length is 36 feet

8 0

3 years ago

Brigid has a 25-foot ladder she will use to paint the side of her house. What angle does the ladder need to make with house so s

lana66690 [7]

Answer:

The answer to your question is the letter D) 46°

Step-by-step explanation:

Data

length = 25 ft

Opposite side = 18 ft

Angle = Ф

To solve this problem, use trigonometric functions. The trigonometric function that relates the Opposite side and the hypotenuse is sine.

Sin Ф = Opposite side / hypotenuse

-Substitution

sin Ф = 18/25

-Simplification

sin Ф = 0.72

-Result

sin⁻¹ Ф = 0.72 = 46°

7 0

3 years ago

What is the simplified form of each expression? <br><br> 1.7m^2 + 6.5 - 4n + 2.5m^2 - n

nasty-shy [4]

Group like terms
1.7m^2+2.5m^2-4n-n+6.5
4.2m^2-5n+6.5

4 0

4 years ago

Triangle abc has vertices a(0 0) b(6 8) and c(8 4). which equation represents the perpendicular bisector of bc

Ivan

Perpendicular means that the slope of one line is the opposite reciprocal of the other; bisector means that the line that is perpendicular is cutting the other one exactly in half. So we have to find 2 things about BC: the first is the midpoint which will then serve as the x and y coordinates in our new equation, and second is the slope of it. First things first: the midpoint formula is this: $M=( \frac{ x_{1}+ x_{2} }{2} , \frac{ y_{1} + y_{2} }{2} )$ . Using our coordinates we fill in that formula like this: $M=( \frac{6+8}{2}, \frac{8+4}{2} )$ which of course gives us a midpoint of (7, 6). Now for the slope of the line BC: $m= \frac{4-8}{8-6} =-2$ . But since we need the perpendicular slope of that we will take its opposite reciprocal which is 1/2. Now use the x and y coordinates of the midpoint and that newly found slope and write your equation to solve for b. $6= \frac{1}{2}(7)+b$ . Solving that for b gives you that b = 5/2. So the equation of the line that is the perpendicular bisector of BC (drum roll, please...) is $y= \frac{1}{2} x+ \frac{5}{2}$

8 0

3 years ago