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3 years ago

Steps for how to use a number line to multiply a 2-digit number by 20

Mathematics

1 answer:

Feliz [49]3 years ago

6 0

its is the same as multiplying normally .

For example 1-2-3-4-5-6-7-8- 2 times 2

you just take the starting number (2) and times it by the other number (2) and youll get 4

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Which correspondences are equivalent to ALMN = ARST?

fenix001 [56]

Answer: whats the answer???? I need it soo badd :((

Step-by-step explanation:

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3 years ago

Solve for x<br> (1/x) -2/3 = (4x)

Vadim26 [7]

The value of x is $x=\frac{-1+\sqrt{37}}{12}$ and $x=\frac{-1-\sqrt{37}}{12}$

Step-by-step explanation:

The equation is $\frac{1}{x}-\frac{2}{3}=4 x$

Subtracting by $4x$ on both sides,

$\frac{1}{x}-\frac{2}{3}-4 x=0$

Taking LCM,

$\frac{3-12 x^{2}-2 x}{3 x}=0$

Multiplying by 3x on both sides,

$-12 x^{2}-2 x+3=0$

Dividing by (-) on both sides,

$12 x^{2}+2 x-3=0$

Using quadratic formula, we can solve for x.

$\begin{aligned}x &=\frac{-2 \pm \sqrt{2^{2}-4 \cdot 12 \cdot(-3)}}{2 \cdot 12} \\&=\frac{-2 \pm \sqrt{4+144}}{2 \cdot 144} \\&=\frac{-2 \pm \sqrt{148}}{24} \\&=\frac{-2 \pm 2 \sqrt{37}}{24}\end{aligned}$

Taking out common term 2, we get,

$\begin{array}{l}{x=\frac{-2(1 \pm \sqrt{37})}{24}} \\{x=\frac{-1 \pm \sqrt{37}}{12}}\end{array}$

Thus, the value of x is $x=\frac{-1+\sqrt{37}}{12}$ and $x=\frac{-1-\sqrt{37}}{12}$

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3 years ago

Use the graph of f to estimate the local maximum and local minimum. (5 points)

Flura [38]

Answer:

The correct option is 1.

Step-by-step explanation:

In a graph, the lowest points of the functions are called local minima and highest points of the functions are called local maxima.

The point of local maxima and local minima can be more than one point. The graph must be continuous at extreme points.

From the given graph it is noticed that the highest point of the function is (0,1), therefore the local maxima is (0,1).

The lowest points of the graph are

$(-\pi,-1),(\frac{3\pi}{2},-1),(\pi,-1)$

But the graph is discontinuous at $(\pi,-1)$ . So, the point $(\pi,-1)$ is not a local minima.

The point of local minima are $(-\pi,-1),(\frac{3\pi}{2},-1)$ .

Therefore option 1 is correct.

6 0

3 years ago

Read 2 more answers

I need help please, I dont know how to do this

Oliga [24]

Answer:

Step-by-step explanation:

Odd numbers backwards - 9, 7, 5, 3

1 = -2+9=7

2 = -1+7=6

3 = 0+5=5

4 = 1 +3=4

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3 years ago

Which of the following is the solution to the quadratic equation x2 + 6x + 8 = 0?

n200080 [17]

Step-by-step explanation:

is the answer

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3 years ago