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arsen [322]
3 years ago
15

Evaluate the following expression using the values given:

Mathematics
1 answer:
Zinaida [17]3 years ago
3 0
3x - 4y - 9x + 4z
3(3) - 4(5) - 9(3) + 4(-3)
= 9 - 20 - 27 - 12
= -50
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Find the distance between the points. (Round your answer to two decimal places. (9.7, - 2.8), (- 3.2, 8.8)
Dmitry [639]

Answer:

Rounding it to two decimal places, we get distance, d=17.35

Step-by-step explanation:

Given:

The two points are (9.7, -2.8)\textrm{ and }(-3.2, 8.8)

The distance between the two points can be obtained using the distance formula which is given as:

d=\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}

Here, for the points, (9.7, -2.8)\textrm{ and }(-3.2, 8.8)

x_{1}=9.7,x_{2}=-3.2,y_{1}=-2.8,y_{2}=8.8

Therefore, the distance between the points is:

d=\sqrt{(-3.2-9.7)^2+(8.8-(-2.8))^2}\\d=\sqrt{(-12.9)^2+(8.8+2.8)^2}\\d=\sqrt{(12.9)^2+(11.6)^2}\\d=\sqrt{166.41+134.56}\\d=\sqrt{300.97}=17.348

Rounding it to two decimal places, we get d=17.35

7 0
3 years ago
5 times the cube of x divided by 4 times x
arlik [135]

Answer:

5x^2/4

Step-by-step explanation:

5 times the cube of x divided by 4 times x

(5x^3)/4x=5x^2/4

3 0
3 years ago
Read 2 more answers
Graph 4x + y = 6x − 1.<br> Show your work and explain the method used to determine the graph.
Alexus [3.1K]

Answer:
Graph the line using the slope and y-intercept, or two points.

Slope: 2
y-intercept: (0, -1)

<u>x | y
</u>0| -1
1 | 1

Step-by-step explanation:

8 0
3 years ago
Which of the following is equivalent to 3x-5y=20?
tiny-mole [99]

Answer:

A. Y=3/5x-4

Step-by-step explanation:

with the original equation, subtract -3x.

with your new equation, divide by -5.

that should give you your answer

8 0
3 years ago
The perimeter of a scalene triangle is 14.5 cm. The longest side is twice that of the shortest sidd.which equation can be used t
Likurg_2 [28]
Let S, M, L represent the shortest, mid-length, and longest sides, respectively. You are given three bits of information.
.. S +M +L = 14.5 cm
.. L = 2S
.. L = 6.2 cm
You can use an equation something like this to find the middle-length side.
.. (6.2 cm)/2 +M +6.2 cm = 14.5 cm
.. M +9.3 cm = 14.5 cm . . . . . . . . . . . . . constant terms collected
.. M = 5.2 cm . . . . . . . . . . . . . . . . . . . . . subtract 9.3 cm

Now, you know the side lengths are 3.1 cm, 5.2 cm, 6.2 cm.
_____
You have not offered any choices for "which equation," so take your pick of those used here.
5 0
3 years ago
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