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3 years ago

One question. 100 Points. Need now.

Mathematics

2 answers:

Pie3 years ago

8 0

Answer:

-4 < x ≤ 9

Step-by-step explanation:

Brrunno [24]3 years ago

6 0

Answer:

-4 < x _< 9

Step-by-step explanation:

_< = Equal too like the sign wiht the underline under it

Use math-way

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Find n please. I just forgot the simple theorem please someone andwrr

grigory [225]

Answer:

118 degrees

Step-by-step explanation:

m = 124 / 2 = 62

Sum of opposite angles m and n is supplementary,

m + n = 180

62 + n = 180

n = 180 - 62

n = 118 degrees

8 0

3 years ago

Find the x-intercept(s) and the coordinates of the vertex for the parabola =y−x2−2x3. If there is more than one x-intercept, sep

Novosadov [1.4K]

Answer:

Step-by-step explanation:

Your equation makes no sense.

I will ASSUME you mean

y = -x² - 2x + 3

which can be factored

y = (x + 3)(-x + 1)

x intercepts occur when y = 0

0 = (x + 3)(-x + 1)

which means either

x + 3 = 0

x = -3

-x + 1 = 0

x = 1

x intercepts are (-3, 0) and (1, 0)

The vertex will occur halfway between these point

x = (-3 + 1) / 2 = -1

so vertex = y = -(-1)² - 2(-1) + 3 = 4

(-1, 4)

7 0

3 years ago

When Josh babysits, he chargers a flat fee of $14 plus an hourly rate of $9. How long would Josh need to babysit if he wants to

SpyIntel [72]

Answer:

$\frac{36}{7}$ hours

Step-by-step explanation:

First let's get the flat fee of 14 out of the way, because he wants to earn 86 dollars and the 14 dollar fee is the y intercept.

$86-14 = 72$

We would then divide 72 by the slope (14 per hour) to see how many hours he has to work:

$72/14 \approx5.14285714286$

I would just simplify because this decimal isn't exact

$72/14 = 36/7$

So 36/7 hours

7 0

3 years ago

Find the slope of the line that goes through the points (1,9) and (3,15) and

Allisa [31]

Answer: B

Step-by-step explanation:

$m=\frac{15-9}{3-1}=3$

Substituting into y=3x+b,

$9=3+b\\ \\ b=6 \implies y=3x+6$

7 0

2 years ago

Line FG goes through the points (4,9) and (1,3). Which equation represents a line that is perpendicular to FG and passes through

stiks02 [169]

Answer:

$x + 2y= 2$

Step-by-step explanation:

Given

Points:

$F = (4,9)$

$G = (1,3)$

Required

Determine the equation of line that is perpendicular to the given points and that pass through $(2,0)$

First, we need to determine the slope, m of FG

$m = \frac{y_2 - y_1}{x_2 - x_1}$

Where

$F = (4,9)$ --- $(x_1,y_1)$

$G = (1,3)$ --- $(x_2,y_2)$

$m = \frac{3 - 9}{1 - 4}$

$m = \frac{- 6}{- 3}$

$m =2$

The question says the line is perpendicular to FG.

Next, we determine the slope (m2) of the perpendicular line using:

$m_2 = -\frac{1}{m}$

$m_2 = -\frac{1}{2}$

The equation of the line is then calculated as:

$y - y_1 = m_2(x - x_1)$

Where

$m_2 = -\frac{1}{2}$

$(x_1,y_1) = (2,0)$

$y - 0 = -\frac{1}{2}(x - 2)$

$y = -\frac{1}{2}(x - 2)$

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

Multiply through by 2

$2y = -x + 2$

Add x to both sides

$x + 2y= -x +x+ 2$

$x + 2y= 2$

Hence, the line of the equation is $x + 2y= 2$

8 0

3 years ago

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