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3 years ago

Please help and show your work so I can understand thank cu

Mathematics

1 answer:

Iteru [2.4K]3 years ago

6 0

Okay what you wanna do it multiple 4.2 and 3.9. if it says "by" it means multiple

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Find the measure of the indicated angle to the nearest degree

Natasha2012 [34]

Answer:

16 degrees

Step-by-step explanation:

Tan(?) = perpendicular/base

Tan(?) = 13/46

?=arctan(13/46)=16

3 0

3 years ago

The table shows the number of blue marbles and red marbles that four friends have collected.

anygoal [31]

Answer:

Gretchen

Step-by-step explanation

Jasmine: 12/10 : 1

Aaron: 3/2 : 1

Lucian: 1 : 1

Gretchen: 7 : 1

7 0

3 years ago

Read 2 more answers

The front of an A-frame cabin in a national park is the shape of a triangle with an area of 564 ft.² if the height is 1 feet les

aleksandrvk [35]

Answer:

Base = 24 ft; height = 47 ft

Step-by-step explanation:

The formula for the area of a triangle is

A = ½bh

Let x = the base. Then

2x - 1 = the height

$\begin{array}{ccc}A & = & \dfrac{1}{2}bh\\\\564 & = & \dfrac{1}{2}x(2x - 1)\\ \\1128 & = & x(2x - 1)\\& = & 2x^{2} - x\\2x^{2} - x - 1128 & = & 0\\(2x + 47)(x - 24) & = & 0\\2x + 47 = 0 &\qquad & x - 24 = 0\\2x = -47 & \qquad & x = \mathbf{24}\\x = -23.5 & \qquad & \\\end{array}$

We reject the negative value, so x = 24 ft

Base = x = 24 ft

Height = 2x - 1 = 2(24)-1 = 48 - 1 = 47 ft

Check:

564 = ½ × 24 × 47

564 = 564

3 0

3 years ago

The number of users of a cell tower in a small, developing town increased by a factor of 1.5 every year from 2010 to 2019. The f

amid [387]

Answer:

$2010\leq{x}\leq{2019}$

Step-by-step explanation:

The function f(x) shows the number of cell tower users after "x" years from the year 2010.
Then, the dependent varible of the function f(x) are the number of cell tower users after x years from 2010, and the independent variable of this function, "x", are the years that have passed since 2010, included 2010.
This means that the independent variable should take the values of the years from 2010, which represent the domain (values that x variable can take), that are all the years between 2010 and 2019 (which is the present year).