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3 years ago

5

Solve the following equation

2 answers:

Veronika [31]3 years ago

7 0

The answer to the equation is x=4.5

Kitty [74]3 years ago

6 0

The answer for X is 4.5

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2. What would a point on the horizontal axis represent? What about on the vertical axis?

Nikitich [7]

In analytic geometry, using the common convention that the horizontal axis represents a variable x and the vertical axis represents a variable y, a y-intercept or vertical intercept is a point where the graph of a function or relation intersects the y-axis of the coordinate system. As such, these points satisfy x = 0.

A coordinate grid has two perpendicular lines, or axes, labeled like number lines. The horizontal axis is called the x-axis. The vertical axis is called the y-axis. The point where the x-axis and y-axis intersect is called the origin. The numbers on a coordinate grid are used to locate points.

7 0

3 years ago

A 30-foot guide wire is attached to the top of the tree and then staked into the ground 25 feet away from the base of the tree.

ladessa [460]

Answer:

16.6 feets .

Step-by-step explanation:

Length of wire = 30 feets

Distance between base of tree and ground = 25 feets

Height of tree, h

Using Pythagoras rule :

h² = 30² - 25²

h² = 900 - 625

h² = 275

h = sqrt(275)

h = 16.583

h = 16.6 feets

Height of tree is 16.6 feets

5 0

3 years ago

What is the value of the expression -(-4)(-6)-3/5(10+15)

ladessa [460]

Answer:

-(-4)(-6)*3/5(10+15)

when there is a (-) in front of an expression in parentheses, change the sing of each term in the expression.

4*(-6)*3/5*(10+15)

Add the numbers (10+15)

4(-6)*3/5*25

multiplying an odd number of negative terms makes the product negative

-4*6*3/5*25

reduce the number with the greatest common factor 5

-4*6*3*5

calculate the product

solution

-360

8 0

4 years ago

For questions 6-8, evaluate the

Svet_ta [14]

(6) The value of $\sqrt{64}$ is 8.

(7) The value of $-\sqrt{31}$ is -5.6

(8) The value of $-\sqrt{16}$ is -4

Explanation:

(6) The expression is $\sqrt{64}$

Since, 64 is a perfect square, this can be written as $8 \times 8$ .

Thus, the expression can be written as

$\sqrt{64}=\sqrt{8 \times 8}=\sqrt{8^{2} }$

The square root gets cancelled. Thus, we have,

$\sqrt{64}=8$

Thus, the value of $\sqrt{64}$ is 8.

(7) The expression is $-\sqrt{31}$

Since, 31 is not a perfect square and solving the expression using a calculator, we get,

$-\sqrt{31}=-5.56776$

Rounding off to the nearest tenth, we get,

$-\sqrt{31}=-5.6$

Thus, the value of $-\sqrt{31}$ is -5.6

(8) The expression is $-\sqrt{16}$

Since, 16 is a perfect square, this can be written as $4\times 4$

Thus, the expression can be written as

$-\sqrt{16}=-\sqrt{4\times 4}=-\sqrt{4^{2} }$

The square root gets cancelled. Thus, we have,

$-\sqrt{16}=-4$

Thus, the value of $-\sqrt{16}$ is -4.

3 0

4 years ago

Given the transformation ????0 k

Lilit [14]

Answer:

Step-by-step explanation:

3 0

3 years ago