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3 years ago

Please how do we solve this? Fast

Mathematics

2 answers:

Drupady [299]3 years ago

7 0

Answer:

answer B is the correct answer

Soloha48 [4]3 years ago

6 0

Answer:

option B ................

is the correct answer

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Find the x and y intercepts 7x - y = 28

xxMikexx [17]

Answer:(0, -28) and (4,0)

Step-by-step explanation:

$7(0)-y =28\\-y=28\\y=-28\\(0, -28)$

$7x-0= 28\\x=4\\(4,0)$

8 0

3 years ago

What are the roots of 3x2 − 5x − 1 = 0?

inysia [295]

Answer:

the roots of 3x2-5-1 is X=1 I think soo

8 0

3 years ago

Solve the inequality -4n > 36

Lemur [1.5K]

Answer:

n < -9

Step-by-step explanation:

Divide both sides by -4, like so:

-4n > 36

n > -9

However, anytime you multiply/divide the inequality by a negative number, you must flip the sign around, like so:

n < -9

5 0

3 years ago

The dot plot showed the number of flowers on a rosebush: 18, 18, 18, 18, 20, 20, 22, 23 The number 19 is used to summarize the d

Darya [45]

Answer:

19 measures the median

Step-by-step explanation:

The dot plot is not shown, but the question can still be answered.

We have:

$Samples: 18, 18, 18, 18, 20, 20, 22, 23$

$n = 8$

Calculate the median position using:

$Median = \frac{n + 1}{2}th$

$Median = \frac{8 + 1}{2}th$

$Median = \frac{9}{2}th$

$Median = 4.5th$

4.5th means the median is the mean of the 4th and 5th item.

We have:

$4th = 18$

$5th = 20$

So:

$Median = \frac{18 + 20}{2}$

$Median = \frac{38}{2}$

$Median = 19$

3 0

3 years ago

The original line has the equation of y=-2x+8

enot [183]

The new equation of line that is perpendicular to the original that goes through the point (6, -1) in slope intercept form is $y = \frac{1}{2}x - 4$

<h3>Solution:</h3>

Given that original line has the equation of y = -2x + 8

We have to write a new equation that is perpendicular to the original that goes through the point (6, -1)

Let us first find slope of original line

The slope intercept form of line is given as:

y = mx + c ------ eqn 1

Where "m" is the slope of line and "c" is the y - intercept

On comparing the slope intercept form and given original equation, we get "m = -2"

Thus slope of original line "m" = -2

We know that product of slope of a line and slope of line perpendicular to it are always -1

slope of original line x slope of line perpendicular to it = -1

$\begin{array}{l}{-2 \times \text { slope of line perpendicular to it }=-1} \\\\ {\text { slope of line perpendicular to it }=\frac{1}{2}}\end{array}$

Let us find equation of line with slope m = 1/2 and passes through point (6, - 1)

Substitute $m = \frac{1}{2}$ and (x, y) = (6, -1) in eqn 1

$-1 = \frac{1}{2} \times 6 + c\\\\-1 = 3 + c\\\\c = -4$

Thus the required equation of line is:

Substitute "c" = -4 and $m = \frac{1}{2}$ in eqn 1

$y = \frac{1}{2}x - 4$

Thus the equation of line perpendicular to original line is found

7 0

3 years ago