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2 years ago

PLEASE HELP, WILL GIVE BRAINLIEST!! THIS QUESTION NEEDS NO MATHEMATICAL CALCULATION. I JUST NEED THE RIGHT ANSWER PLEASE!!

Mathematics

2 answers:

qaws [65]2 years ago

5 0

Answer:

Answer is D.)

Step-by-step explanation:

If im wrong im really sorry i tried to ork this out in my head as fast as possible.

tigry1 [53]2 years ago

5 0

Answer:

D, 2ttr represents the portion of the circumference of the circle that the arc spans .

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3 years ago

Net sales is the difference between sales and returns.<br>True<br>False

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2 years ago

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. Use the quadratic formula to solve each quadratic real equation. Round

Liono4ka [1.6K]

Answer:

A. No real solution

B. 5 and -1.5

C. 5.5

Step-by-step explanation:

The quadratic formula is:

$\begin{array}{*{20}c} {\frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}} \end{array}$ , with a being the x² term, b being the x term, and c being the constant.

Let's solve for a.

$\begin{array}{*{20}c} {\frac{{ 5 \pm \sqrt {5^2 - 4\cdot1\cdot11} }}{{2\cdot1}}} \end{array}$

$\begin{array}{*{20}c} {\frac{{ 5 \pm \sqrt {25 - 44} }}{{2}}} \end{array}$

$\begin{array}{*{20}c} {\frac{{ 5 \pm \sqrt {-19} }}{{2}}} \end{array}$

We can't take the square root of a negative number, so A has no real solution.

Let's do B now.

$\begin{array}{*{20}c} {\frac{{ 7 \pm \sqrt {7^2 - 4\cdot-2\cdot15} }}{{2\cdot-2}}} \end{array}$

$\begin{array}{*{20}c} {\frac{{ 7 \pm \sqrt {49 + 120} }}{{-4}}} \end{array}$

$\begin{array}{*{20}c} {\frac{{ 7 \pm \sqrt {169} }}{{-4}}} \end{array}$

$\begin{array}{*{20}c} {\frac{{ 7 \pm 13 }}{{-4}}} \end{array}$

$\frac{7+13}{4} = 5\\\frac{7-13}{4}=-1.5$

So B has two solutions of 5 and -1.5.

Now to C!

$\begin{array}{*{20}c} {\frac{{ -(-44) \pm \sqrt {-44^2 - 4\cdot4\cdot121} }}{{2\cdot4}}} \end{array}$

$\begin{array}{*{20}c} {\frac{{ 44 \pm \sqrt {1936 - 1936} }}{{8}}} \end{array}$

$\begin{array}{*{20}c} {\frac{{ 44 \pm 0}}{{8}}} \end{array}$

$\frac{44}{8} = 5.5$

So c has one solution: 5.5

Hope this helped (and I'm sorry I'm late!)

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3 years ago

Which translation maps the vertex of the graph of the function f(x) = x2 onto the vertex of the function g(x) = x2 + 2x +1?

jarptica [38.1K]

Answer:

Option B is correct

Left 1 unit.

Explanation:

According to the graph theory of transformation:

y = f(x+k)= $\left \{ {{k>0 shift graph of y= f(x) left k unit} \atop {k$

Given the parent function: $f(x)=x^2$

and the function $g(x)=x^2+2x+1$

we can write it as:

g(x)= $(x+1)^2$ [ ∴ $(a+b)^2 = a^2+2ab+b^2$ ]

Therefore, vertex of the graph of the function $g(x)=(x+1)^2$ is 1 units to the left of the vertex of the graph of the function $f(x)=x^2$ .

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3 years ago

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