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lilavasa [31]
3 years ago
13

Can someone help pls

Mathematics
1 answer:
Gwar [14]3 years ago
3 0
(1.8k-5) + (k+1.5) + (3.5+6.1k) = 53.4
8.9k=53.4
k=6
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Is the line for the equation y = −8 horizontal or vertical? What is the slope of this line?
ZanzabumX [31]

Check the picture below.

so, say let's use two points on that line to see what's its slope then.

\bf (\stackrel{x_1}{-6}~,~\stackrel{y_1}{-8})\qquad (\stackrel{x_2}{4}~,~\stackrel{y_2}{-8}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{-8-(-8)}{4-(-6)}\implies \cfrac{-8+8 }{4+6}\implies \cfrac{0}{10}\implies 0

8 0
4 years ago
The diameter of a cylinder is 4 centimeters. The height is 12 centimeters. Using 3.14 for pi, what is the volume of the cylinder
erica [24]

Answer:

V = 150.72 cm³.

Step-by-step explanation:

First, get the volume of a cylinder.

V = πr²h

Where:

π = 3.14 (given)

r = radius (half of diameter, or 2)

h = height (12)

Knowing this, substitute the known values.

V = πr²h

V = (3.14)(2²)(12)

Square 2.

V = (3.14)(4)(12)

Multiply 3.14 and 4.

V = (12.56)(12)
Multiply 12.56 and 12.

V = 150.72.

Since it is already rounded to the nearest hundredth, that is your answer.

7 0
2 years ago
Simplify: (−5x + 7) − (x2 − 3x + 2). Write your answer in standard form.
AfilCa [17]

Answer:

- x ^{2}  - 2x + 5

pls mark as brainliest lol

7 0
3 years ago
Assume that births of girls and boys are equally likely. If a family has six children. What the number of outcomes in the sample
Nonamiya [84]
STEP BY STEP EXPLANATION:
4 0
3 years ago
which of the following equations does the graph show below pls help l give u the branliest answer or wtvr
lesya [120]

Answer:

x - 5y = 5

Step-by-step explanation:

Let's represent the equation of the graph in slope-intercept form, y = mx + b.

We'd need to find slope (m) and y-intercept (b) of the graph.

Slope (m) = ∆y/∆x

Using two points on the line, (0, -1) and (5, 0),

Slope (m) = (0 - (-1)) / (5 - 0) = 1/5

m = ⅕

y-intercept (b) is the point on the y-axis where the line intercepts the y-axis = -1

Therefore, b = -1

To write the equation, substitute m = ⅕ and b = -1 into y = mx + b

Thus:

y = ⅕(x) + (-1)

y = ⅕(x) - 1

Rewrite in standard form:

-⅕x + y = -1

Multiply both sides by -5

-⅕x*-5 + y*-5 = -1*-5

x - 5y = 5

8 0
3 years ago
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