All categories

2 years ago

4x+y=6 y=-4x-1 HELP ME

Mathematics

1 answer:

Afina-wow [57]2 years ago

4 0

Answer:

No solution

Step-by-step explanation:

<u>Given</u>

4x+y=6
y=-4x-1

<h3>Solution 1</h3>

<u>Substitute y in the first equation:</u>

4x + (-4x - 1) = 6
4x - 4x =6 + 1
0 = 7

Incorrect, therefore no solution

<h3>Solution 2</h3>

<u>Writing both equation as lines:</u>

y = -4x + 6
y = -4x - 1

As we see both lines have a same slope. It means they are parallel and no intersection.

You might be interested in

The sum of two numbers is 82 and their difference is 26. find each of the numbers.

Zarrin [17]

54 because if x+y=82 and x-y=26 add 26 and 82 is 108 the divide it by 2 your answer is 54

7 0

2 years ago

Read 2 more answers

Write an expression that is equivalent to three over four (5z+ 16). WILL GIVE BRAINLIEST

Alik [6]

Answer:

15 over fourz +12

Using the distributive property, 3/4 • 5z equals 15/4z, which can't be simplified. Then 3/4 of 16 is 12. If you divide 16 by 4 (the denominator) and then multiply by 3 (the numerator) that yields your answer.

Step-by-step explanation:

literally just got asked this question (if that makes sense lol)

so B is your answer

4 0

2 years ago

Read 2 more answers

For each pair of points below, think about the line that joins them. For which pairs is the line parallel to the y-axis? Circle

gogolik [260]

Answer:

Option B.

Step-by-step explanation:

If two lines are parallel then their slopes are always same.

Following this rule we can find the slope by the given pairs of coordinates of the options.

If the slope of the line is same as the slope of y axis then the line passing through these points will be parallel to the y axis.

Slope of y - axis = ∞

Option A). Slope = $\frac{y-y'}{x-x'}$

= $\frac{24-8.5}{3.22-3.2}$

= $\frac{15.5}{0.02}$

= 775

Therefore, line passing through points (3.2, 8.5) and (3.22, 24) is not parallel to y axis.

Option B). Slope of the line passing through $(\frac{40}{3},\frac{14}{3})$ and $(\frac{40}{3},7)$ will be

= $\frac{\frac{14}{3}-7}{\frac{40}{3}-\frac{40}{3}}$

= ∞

Therefore, line passing though these points is parallel to the y axis.

Option C). Slope of the line passing through $(2.9,5.4)$ and (7.2, 5.4)

= $\frac{5.4-5.4}{7.2-2.9}$

= 0

Therefore, slope of this line is not equal to the slope of y axis.

Option B. is the answer.

5 0

3 years ago

4 divided by 2/9? If you could, please also explain.

shtirl [24]

You do 4/1 divided by 2/9

4 2
_ divided by _

1 9

Equals 18

(You have to multiply by the reciprocal)

4/1 times 1/4
And
2/9 times 1/4

Hope I helped!!!

7 0

3 years ago

You drink a beverage with 120 mg of caffeine. Each hour, the caffeine in your system decreases by about 12%. How long until you

Lena [83]

Answer:

10 hours

Step-by-step explanation:

7 0

2 years ago