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AleksandrR [38]
2 years ago
10

Need help really bad please and thank you!

Mathematics
2 answers:
victus00 [196]2 years ago
8 0

Answer:30.9 cm

Step-by-step explanation:  =X/35

X= 35 cos 28'

X= 30. 90cm

width 06

Rectangle = 30.9cm

VLD [36.1K]2 years ago
5 0

Answer:

Step-by-step explanation:

The side opposite the given width of x is also x.

So you have to relate 3 facts.

The angle

The adjacent side

The hypotenuse.

Formula

Cos(28) = x / 35

Solution

Cos(28) = x / 35                Multiply both sides by 35

35 cos(28) = 35 * x / 35   Cancel

35 cos(28) = x                  Multiply

30.90 = x

Rounded, it is 30.9

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Evaluate the expression using the distributive property 8(7+7)
MrRissso [65]

Answer: 112

Step-by-step explanation:

Following PEMDAS, we need to add the numbers in the parenthesis first

8(7+7) becomes 8(14)

Now we just multiply 8 and 14

8(14) = 112

5 0
3 years ago
Read 2 more answers
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Sindrei [870]

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3 years ago
Given f(x) = 4x^4 find f^-1(x) Then state whether f^-1(x) is a function.
sdas [7]

Answer:

  • f^{-1}(x)=\pm\sqrt[4]{\dfrac{x}{4}}
  • f^{-1}(x) \quad\text{is not a function}

Step-by-step explanation:

To find the inverse function, solve for y:

x=f(y)\\\\x=4y^4\\\\\dfrac{x}{4}=y^4\\\\\pm\sqrt[4]{\dfrac{x}{4}}=y\\\\f^{-1}(x)=\pm\sqrt[4]{\dfrac{x}{4}}

f(x) is an even function, so f(-x) = f(x). Then the inverse relation is double-valued: for any given y, there can be either of two x-values that will give that result.

___

A function is single-valued. That means any given domain value maps to exactly one range value. The test of this is the "vertical line test." If a vertical line intersects the graph in more than one point, then that x-value maps to more than one y-value.

The horizontal line test is similar. It is used to determine whether a function has an inverse function. If a horizontal line intersects the graph in more than one place, the inverse relation is not a function.

__

Since the inverse relation for the given f(x) maps every x to two y-values, it is not a function. You can also tell this by the fact that f(x) is an even function, so does not pass the horizontal line test. When f(x) doesn't pass the horizontal line test, f^-1(x) cannot pass the vertical line test.

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The attached graph shows the inverse relation (called f₁(x)). It also shows a vertical line intersecting that graph in more than one place.

5 0
3 years ago
“The product of seven and two y added to 27.” What is the coefficient in this expression? 7 2 14 Help Please
Veronika [31]

Answer:

14

Step-by-step explanation:

7*2y+27

14y+27

14 is coefficient of variable y

8 0
3 years ago
Drag each tile to the correct box. The water level of a tank every minute since it began filling is indicated by segments A, B,
oksian1 [2.3K]

The least to greatest slope, the segments are B, C, and A.

We have given that,

The water level of a tank every minute since it began filling is indicated by segments A, B, and C on the graph below.

A graph represents the water level to fill the tank on Y-axis per time on X-axis.

The rate of increase of water level is indicated by the slope of the segment. The slope is the ratio of rise to run, and is related to the angle the segment makes with the +x axis.

Segments that have more rise for the same run have greater slope. Segments that make a larger reference angle with the +x axis have a larger slope.

Here, segment B has the least slope, followed by C, then A, which has the largest slope.

In order, the least to greatest slope, the segments are B, C, and A.

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