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Dennis_Churaev [7]
3 years ago
8

Somebody help me on this plzz

Mathematics
1 answer:
Misha Larkins [42]3 years ago
6 0
(-4,-3) and (4,1)
slope = (1 + 3)/(4+4) = 4/8 = 1/2

perpendicular lines, slope is opposite and reciprocal
so slope of  new line = -2

passing thru (-4, 3)

equation in point slope form
y - 3 = -2(x + 4)

answer
y - 3 = -2(x + 4)

hope it helps
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Simplify the exspresion below <br><br> 3(7.1y + 4x)
givi [52]

Answer:

21.3y + 12x

Step-by-step explanation:

8 0
2 years ago
The largest of 2 integers is one more than three times the smaller. If the sum of the two integers is 37, find the larger intege
Ber [7]

Answer:The larger is 28, the smaller is 9.

Step-by-step explanation:

n = the smaller

3n + 1 = the larger

n + (3n + 1) = 37

4n + 1 = 37

4n = 36

n = 9

3n + 1 = 3(9) + 1 = 28

The larger is 28, the smaller is 9.

mark brainliest please

7 0
2 years ago
Read 2 more answers
A television screen's width is 1.778 times its height. If its
Nana76 [90]

Answer:

Let a, b, and c be the height, width, and the diagonal of the screen respectively

Since they form a triangle and the angle between a and b is 90 degrees, according to the Pythagorean Theorem a^2 + b^2 = c^2

Let's assume that the aspect ratio is 16:9. Therefore b/a = 16/9

Now we have a system of two equations with two unknowns. We need to express everything in terms of a single unknown, so let's express a in terms of b.

Since, b/a = 16/9, by cross multiplying 16a = 9b. Therefore a=9b/16.

Now we can subsitute 9b/16 for a in the first equation

a^2+b^2=c^2 becomes (9b/16)^2 + b^2 = c^2

Squaring the nominator and the denominator of the fraction yields

81b^2/256 + b^2 = c^2

To perform the addition, we need to express b^2 as a fraction with denominator 256 which is 256b^2/256, Now we have

81b^2/256 + 256b^2/256 = c^2

Adding fractions with the same denominators is now easy and produces

337b^2/256 = c^2

Cross multiply to get

337b^2 = 256c^2

Divide both sides by 337 to get b^2

b^2=256c^2/337

Take the square root of both sides to get b

b = sqrt(256c^2/337)

Lots of complicated Pythagorean responses. This is much simpler to answer with Trigonometry.

TLDR; just multiply the diagonal by the following two coefficients, and add the bezel width, to get the width and height:

w = diag x 0.872 + 2 x bw

h = diag x 0.49 + 2 x bw

(Where diag is the diagonal size of the screen and bw is the bezel width)

Thats all you need to know to do this.

Now here’s the Teig behind it:

First, calculate the angle of the diagonal relative to the base, using tangent, which yields ::

a = tan(9/16)

This will give you an angle of 0.512 radians (or roughly 30 degrees).

Next, calculate the ratio of the height relative to the hypotenuse (the diagonal length) using arc-sine, which yields the relative proportion of opposite length over the hypotenuse for a given angle:

h = asin(0.512)

The result will be roughly h = 0.49, or 49% of the diagonal.

Finally, get the ratio of eidth to hypotenuse using arc-cosine:

w = acos(0.512)

The result is roughly w = 0.872, or 87.2% of the diagonal.

that’s all the math! Enjoy!

6 0
3 years ago
Pls help me! easy question! will give brainliest!
Deffense [45]

Answer:

i think that it is y= 1.4x + 11.2

Step-by-step explanation

8 0
3 years ago
What is the inverse (opposite) operation that you will use to solve this equation for c+3=4 and the answer.
hjlf

Answer:

1

Step-by-step explanation:

As we know that addition and subtraction are inverse operations, as are multiplication and division.

The given equation is c+3=4

To solve such equations we isolate the unknown( to keep it either to the left or right of = sign) as c = 4-3  

This is also called transposing and the sign of the transposed value changes.

Hence, c = 4-3 = 1

4 0
3 years ago
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