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3 years ago

What’s 8x8 This is to test how the app works not serious

Mathematics

2 answers:

lisov135 [29]3 years ago

5 0

Answer:

Step-by-step explanation:

dalvyx [7]3 years ago

5 0

Answer:

Step-by-step explanation:

8 x 8 = 64

8 x 8 = 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 = 64.

As for your question on how this app works:

1) You use points to ask educational questions. This can include a large variety of subjects, but be sure to put your question in the right subject.

2) You can earn points by answering questions. Different questions may give different amount of points, ranging from 5 + 3 for brainliest, up to 50 + 25 for brainliest, depending on how generous the asker wants to be. Answer the question, and provide explanation.

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A sequence starts with 1, -1,... Give a rule that could follow the next 3 terms.

Aleonysh [2.5K]

Answer:

thus next three terms are -3,-5,-7

Step-by-step explanation:

a=1

first find d

-1-1

-2

then a.p= a,a+d,a+2d,a+3d,a+4d

=1,1-2,1+2×-2,1+3×-2,1+4×-2

=1,-1,1-4,1-6,1-8

=1,-1,-3,-5,-7

plz mark as brainlist

4 0

3 years ago

Which graph represents a function? Ay ny ty

nirvana33 [79]

Answer: it would be the fourth one with the line going straight across the top

Step-by-step explanation: To use the vertical line test, take a ruler or other straight edge and draw a line parallel to the y-axis for any chosen value of x.

If the vertical line you drew intersects the graph more than once for any value of x then the graph is not the graph of a function.

6 0

2 years ago

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Drag a statement or reason to each box to complete this proof. If 4x+5=17, then x=3.

natita [175]

Statement Reason

1) 4x + 5 = 17 Given

2) 4x + 5 - 5 = 17 - 5 Subtraction property of equality

3) 4x = 12 Simplifying

4) 4x/4 = 12/4 Division property of equality

5) x = 3 Simplifying

6 0

3 years ago

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The triangle are similar. what is the valie of x?

Nadusha1986 [10]

Answer:

the answer is 6

Step-by-step explanation:

the little triangle is half the size but with the same degree

8 0

3 years ago

Read 2 more answers

Find the point (,) on the curve =8 that is closest to the point (3,0). [To do this, first find the distance function between (,)

ELEN [110]

Question:

Find the point (,) on the curve $y = \sqrt x$ that is closest to the point (3,0).

[To do this, first find the distance function between (,) and (3,0) and minimize it.]

Answer:

$(x,y) = (\frac{5}{2},\frac{\sqrt{10}}{2}})$

Step-by-step explanation:

$y = \sqrt x$ can be represented as: $(x,y)$

Substitute $\sqrt x$ for $y$

$(x,y) = (x,\sqrt x)$

So, next:

Calculate the distance between $(x,\sqrt x)$ and $(3,0)$

Distance is calculated as:

$d = \sqrt{(x_1-x_2)^2 + (y_1 - y_2)^2}$

So:

$d = \sqrt{(x-3)^2 + (\sqrt x - 0)^2}$

$d = \sqrt{(x-3)^2 + (\sqrt x)^2}$

Evaluate all exponents

$d = \sqrt{x^2 - 6x +9 + x}$

Rewrite as:

$d = \sqrt{x^2 + x- 6x +9 }$

$d = \sqrt{x^2 - 5x +9 }$

Differentiate using chain rule:

Let

$u = x^2 - 5x +9$

$\frac{du}{dx} = 2x - 5$

So:

$d = \sqrt u$

$d = u^\frac{1}{2}$

$\frac{dd}{du} = \frac{1}{2}u^{-\frac{1}{2}}$

Chain Rule:

$d' = \frac{du}{dx} * \frac{dd}{du}$

$d' = (2x-5) * \frac{1}{2}u^{-\frac{1}{2}}$

$d' = (2x - 5) * \frac{1}{2u^{\frac{1}{2}}}$

$d' = \frac{2x - 5}{2\sqrt u}$

Substitute: $u = x^2 - 5x +9$

$d' = \frac{2x - 5}{2\sqrt{x^2 - 5x + 9}}$

Next, is to minimize (by equating d' to 0)

$\frac{2x - 5}{2\sqrt{x^2 - 5x + 9}} = 0$

Cross Multiply

$2x - 5 = 0$

Solve for x

$2x =5$

$x = \frac{5}{2}$

Substitute $x = \frac{5}{2}$ in $y = \sqrt x$

$y = \sqrt{\frac{5}{2}}$

Split

$y = \frac{\sqrt 5}{\sqrt 2}$

Rationalize

$y = \frac{\sqrt 5}{\sqrt 2} * \frac{\sqrt 2}{\sqrt 2}$

$y = \frac{\sqrt {10}}{\sqrt 4}$

$y = \frac{\sqrt {10}}{2}$

Hence:

$(x,y) = (\frac{5}{2},\frac{\sqrt{10}}{2}})$

3 0

3 years ago