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3 years ago

PLS HELP IM TIMED!!!

Mathematics

2 answers:

goblinko [34]3 years ago

8 0

Answer:

10,-1

Step-by-step explanation:

when going right it adds a positive number to the x axis

when going left it adds a negative number to the x axis (same as subtracting)

when going up it adds a positive number to the y axis

when going down it adds a negative number to the y axis (same as subtracting)

n200080 [17]3 years ago

4 0

Answer:

(10,-1)

Step-by-step explanation:

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Simplify. 3 ft 23 in.

sleet_krkn [62]

Answer:

4 ft 11 inches

Step-by-step explanation:

Remember that 12 inches is 1 foot, so 24 inches is 2 feet. That means, 23 inches is 1 foot 11 inches. 11/12 is one inch gone from a foot, so 23/24 much be one inch gone from 2 feet.

Since you already have 3 feet, adding the 1 foot and 11 inches leaves you with 4 ft 11 inches as a result.

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3 years ago

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Example: y = -2x and y = x + 3

Nitella [24]

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Which number could not be a value of x? A 8 B. 9 C. 12 12 D. 21

NISA [10]

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3 years ago

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What's the full equation for this graph?

swat32

1.
Left side of a graph is a line that passes through points $A=(-1,-1)$ and $B=(1,4)$ so we can write its equation as:

$(y-y_A)=\dfrac{y_B-y_A}{x_B-x_A}(x-x_A)\\\\\\
\big(y-(-1)\big)=\dfrac{4-(-1)}{1-(-1)}\big(x-(-1)\big)\\\\\\
y+1=\dfrac{4+1}{1+1}(x+1)\\\\\\y+1=\dfrac{5}{2}(x+1)\\\\\\y+1=\dfrac{5}{2}x+\dfrac{5}{2}\\\\\\y=\dfrac{5}{2}x+\dfrac{5}{2}-1\\\\\\\boxed{y=\frac{5}{2}x+\frac{3}{2}}$

2.
Right side of a graph is a parabola with vertex $V=(3,-3)$ that passes through point $P=(1,1)$ . Its equation:

$y=a(x-x_V)^2+y_V\\\\y=a(x-3)^2+(-3)\\\\y=a(x-3)^2-3$

Substitute $x=1$ and $y=1$ to calculate parameter $a$

$1=a(1-3)^2-3\\\\1=a(-2)^2-3\\\\1=4a-3\\\\4a=4\quad|:4\\\\a=1$

and we have the equation of parabola:

$y=a(x-3)^2-3\\\\y=1\cdot(x-3)^2-3\\\\y=(x-3)^2-3\\\\y=x^2-2\cdot x\cdot3+3^2-3\\\\y=x^2-6x+9-3\\\\\boxed{y=x^2-6x+6}$

From 1. and 2. full equation for graph is:

$f(x)=\begin{cases}\dfrac{5}{2}x+\dfrac{3}{2}\qquad\text{for}\,\,\,x\ \textless \ 1\\\\x^2-6x+6\qquad\text{for}\,\,\,x\geq1\end{cases}$

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4 years ago

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insens350 [35]

Answer:

10 aC habría 11

Step-by-step explanation:

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3 years ago