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3 years ago

LEvaluate the expression for x=5, y=-3 and z=7 9x - 5y +4

Mathematics

2 answers:

adell [148]3 years ago

4 0

Answer:

Step-by-step explanation:

(Refer to image)

Plug in x and y and use order of operations to solve the rest of the expression

kramer3 years ago

3 0

Answer:

Step-by-step explanation:

Substitute the values in the equation.

$9x - 5y + 4$

$9(5) - 5( - 3) + 4$

$45 + 15 + 4$

$64$

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9. What formula could be used to find the area of the image?

Scilla [17]

Answer:

9. Area of triangle= $\frac{1}{2} \times base\times height$

10. Base= 16 ft and Height= 15 ft.

11. 120 ft²

Step-by-step explanation:

Given: Base of triangle= 16 ft

Length of leg of triangle= 17 ft.

As shown in the picture that median has bisected the triangle and forming two right angle triangle.

∴ Each base of right angle triangle= $\frac{16}{2} = 8\ feet$

Now, finding the height of triangle by using pythagorean theorem.

We know, $h^{2} = a^{2} +b^{2}$ , where h is hypotenous, a is height or opposite and b is base or adjacent of triangle.

⇒ $17^{2}= a^{2} + 8^{2}$

⇒ $289= a^{2} + 64$

Subtracting both side by 64

⇒ $225= a^{2}$

taking square root on both side, remember; √a²=a

⇒a= $\sqrt{225} = 15$

Hence, height of triangle is 15 ft.

Next, finding the area of triangle.

Formula; Area of triangle= $\frac{1}{2} \times base\times height$

⇒ Area of triangle= $\frac{1}{2} \times 16\times 15$

∴ Area of triangle= 120 ft²

8 0

3 years ago

The graph of function g(x) is a transformation of the graph of function f(x) = x2.g(x) =

mariarad [96]

Given:

The graph of function g(x) is a transformation of the graph of function f(x) = x²

As shown: the graph of g(x) is open down

So, we will reflect f(x) over the x-axis, the function will be ⇒ -x²

And there is horizontal compression so, the factor of compression will be > 1

So, the function will be ⇒ -2x²

Finally, there is a vertical shift down 3 units

So,

$g(x)=-2x^2-3$

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1 year ago

Carl works at a garment factory and sews buttons on shirts. For each shirt he completes that passes inspection, he earns $2. How

Ratling [72]

do 2*52 which gives you 104 so 104 dollars

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4 years ago

PLEASE I NEED THE ANSWER IN 5 MINUTES ITS FOR HOMEWORK AND THE TEACHER IS REALLY STIRCT !!!!!

Verizon [17]

Answer: yes, jake is incorrect. H-15

Step-by-step explanation:

H+10=25

-10=-10

H=15

5 0

3 years ago

Through: (-5, -5), slope=2/5

kakasveta [241]

For this case we have that by definition, the equation of a line in the slope-intersection form is:

$y = mx + b$

Where:

m: It is the slope

b: It is the cut point with the y axis

The slope is: $m = \frac {2} {5}$

Thus, the equation is of the form:

$y = \frac {2} {5} x + b$

We substitute the given point and find "b":

$-5 = \frac {2} {5} (- 5) + b\\-5 = -2 + b\\-5 + 2 = b\\b = -3$

Finally, the equation is:

$y = \frac {2} {5} x-3$

Answer:

$y = \frac {2} {5} x-3$

4 0

3 years ago