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mafiozo [28]
4 years ago
8

Given h(x)=-x-4, solve for x when h(x)=4

Mathematics
1 answer:
Brilliant_brown [7]4 years ago
5 0

Step-by-step explanation:

h(x)=-x-4

but h(x)=4

4=-x-4

x=-4-4

x=-8

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The Answer to this problem is BN=3.8 Units.


6 0
3 years ago
Help??<br> anyone??<br> 7th grade math
Gnoma [55]

Answer:

40 miles

Step-by-step explanation:

4x10 is 40 miles

5 0
3 years ago
Read 2 more answers
A surveying team set up some equipment 104104 ft from the base of a tree in order to sight the top of the tree. From ground leve
jarptica [38.1K]

Answer:

Relative error = 0.0254 %

Step-by-step explanation:

Given details

Height of equipment from base is 104 ft

Elevation angle is 27.5 degree

From figure we have

tan\theta = \frac{x}{104} .........1

tan(27.5) = \frac{x}{104}

x  = 54.13 ft

differentiating 1st eq wrt x

\frac{d}{dx} tan\theta = \frac{d}{dx} [\frac{x}{104}]

sec^2\theta \frac{d\theta}{dx} = \frac{1}{104}

Taken d\theta \ as \Delta x \ and\  dx = \Delta x for minute change

\Delta x = 1.5% x

             = 0.015 \times 54.13 = 0.8119 ft

from sec^2 \theta \frac{d\theta}{dx} = \frac{1}{104}

     \Delta \theta = \frac{1}{104 sec^2 \theta} \Delta x

\Delta \theta = \frac{1}{104 \times 1.115} 0.8119

\Delta \theta  = 0.007

Reltaive error= \frac{\Delta \theta}{\theta} \times 100

                      = \frac{0.007}{27.5}\times 100

Relative error = 0.0254 %

4 0
4 years ago
The points (4,8) and (6,g) fall on a line with a slope of –5. What is the value of g?
777dan777 [17]
<h3>Answer:  g = -2</h3>

======================================================

Explanation:

We will use the slope formula

m = (y2-y1)/(x2-x1)

Plugging in the given items leads to

-5 = (g-8)/(6-4)

Now solve for g

-5 = (g-8)/(6-4)

-5 = (g-8)/2

-5*2 = g-8

-10 = g-8

-10+8 = g

-2 = g

g = -2

We have (6,g) turn into (6,-2)

The two points (4,8) and (6,-2) are on a line of slope -5.

-------------------

As a way to check, we'll find the slope of the line through (4,8) and (6,-2)

m = (y2-y1)/(x2-x1)

m = (-2-8)/(6-4)

m = -10/2

m = -5

The answer is confirmed.

6 0
3 years ago
Okay this my last one can y'all help
zlopas [31]

a. The solution is (0,2)

b. The first expression will be easier to substitute as in the first expression the variable y is already isolated on one side of the equation so we can easily put 5x+2 in place of y in equation 2.

Step-by-step explanation:

Given equations are:

y = 5x+2\ \ \ \ Eqn1\\12.5x+2.5y = 5\ \ \ \ Eqn2

a. Solution

Putting y = 5x+2 in equation 2

12.5x+2.5(5x+2) = 5\\12.5x+12.5x+5 = 5\\25x +5 = 5\\25x = 5-5\\25x = 0\\x = 0

Putting x = 0 in equation 1

y = 5(0)+2\\= 0+2 = 2

Hence,

The solution is (0,2)

b: Reason:

The first expression will be easier to substitute as in the first expression the variable y is already isolated on one side of the equation so we can easily put 5x+2 in place of y in equation 2.

Keywords: Linear equation, substitution

Learn more about linear equations at:

  • brainly.com/question/4786449
  • brainly.com/question/4793866

#LearnwithBrainly

7 0
4 years ago
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