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3 years ago

HEEEEEELP !

Mathematics

1 answer:

iogann1982 [59]3 years ago

6 0

If you meant to write y=23x-4 then none of the lines are perpendicular.

I suspect you intended y=2/3x-4, then line D, y=-3/2x-4 is perpendicular.

For any line y=mx+b, you have to "invert" m to get a perpendicular line. Inverting in this case means: flip numerator and denominator and add a minus sign.

So 2/3 becomes -3/2, hence answer D.

The 'inverted' m is called the opposite reciprocal. That's your word of the day.

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Mario is constructing a square dart board. It will consist of a smaller square centered in a larger square. The smaller square m

Ivan

Answer:

6 inches.

Step-by-step explanation:

Let a represent side length of larger square.

We know that area of square is square of its side length, so area of the larger square will be $a^2$ .

The area of smaller square would be $4^2$ .

We will use proportions to solve our given problem.

$\frac{\text{Area of smaller square}}{\text{Area of larger square}}=\frac{4}{9}$

$\frac{4^2}{a^2}=\frac{4}{9}$

$\frac{16}{a^2}=\frac{4}{9}$

Cross multiply:

$4*a^2=16*9$

$\frac{4*a^2}{4}=\frac{16*9}{4}$

$a^2=36$

Take square root:

$a=\pm\sqrt{36}$

$a=\pm 6$

Since the length cannot be negative, therefore, the side length of larger square is 6 inches.

8 0

3 years ago

I need help but not urgent but urgent!!

Mars2501 [29]

Answer:

8.6 mile

Explanation:

$\sf equation \ follows : \ \ \ d = 1.2116\sqrt{h}$

d represents the distance a person can see.

h represents the height above the ocean.

what the captain sees:

$\hookrightarrow \sf d_c = 1.2116\sqrt{15}$

what the sailor sees:

$\hookrightarrow \sf d_s = 1.2116\sqrt{120}$

Difference between them:

$\sf \rightarrow 1.2116\sqrt{120} \ - \ 1.2116\sqrt{15}$

$\sf \rightarrow 8.58$

$\sf \rightarrow 8.6$ (rounded to nearest tenth)

6 0

2 years ago

Read 2 more answers

Gad has 15 trading cards that he wants to give to 5 friends. He wants each friend to have the same number of trading cards. Sele

Anastaziya [24]

Answer:

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Can someone help me plz

melisa1 [442]

The answer is B,which is 454 to be exact

7 0

3 years ago

What is the domain and range of this function?

max2010maxim [7]

As for the domain, the only restriction comes from the logarithm. The argument of a logarith must be strictly positive, so we have

$x-2>0 \iff x>2$

As for the range, we have:

The range of $\log(x)$ are all real numbers
If we change to $\log(x-2)$ we're translating the function horizontally, so the range remains the same
If we change to $\log(5(x-2()$ we're stretching the function horizontally, so the range doesn't change
If we change to $\log(5(x-2))+1$ we're translating the function 1 unit up, but the range is already all the real numbers, so it doesn't change.

5 0

3 years ago