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1 year ago

|-24 + 12| lolololool

Mathematics

2 answers:

BaLLatris [955]1 year ago

6 0

The answer to the equation is 12.

FrozenT [24]1 year ago

6 0

Answer:

12is the answer of the questions

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268∙12+268∙23+732∙35

bonufazy [111]

To evaluate this expression, you will perform all the multiplication first then add those answers.

268x12 + 268x 23 + 732x35
3216 + 6164 + 25620
9380 + 25620
35000

The answer is 35,000.

5 0

2 years ago

What coordinate below is a solution to the system of equations : 6x+7y =-9 and -4x-5y=5?

mote1985 [20]

6x + 7y = -9

-4x - 5y = 5

We can use either substitution or elimination. I prefer substitution so I will explain it that way. You can use elimination as well.

We can solve for x first so we will need to substitute y in terms of x.

6x + 7y = -9
7y = -9 - 6x
y = (-9 - 6x)/7

Plugging this into the other equation:

-4x - 5[(-9 - 6x)/7] = 5
-4x + (45 + 30x)/7 = 5
-28x + 45 + 30x = 35
2x + 45 = 35
2x = - 10
x = -5

Insert this into the other equation to solve for y.

6(-5) + 7y = -9
-30 + 7y = -9
7y = 21
y = 3

Your answer should be (-5, 3). Hope this helps!

6 0

2 years ago

Use the Exterior Angles Theorem to find the measure of each angle in degrees.

Gre4nikov [31]

You have to begin by using the triangle sum therom. That means Angle DEC would be 64°, Angle D would be 76°, and angle C would be 40°

8 0

2 years ago

Ming throws a stone off a bridge into a river below.

AURORKA [14]

Answer:

1 seconds after being thrown, the stone reaches its max height

Step-by-step explanation:

The parabolic (quadratic) equation is:

$h(x)=-5(x-1)^2+45$

Lets expand this in the form $ax^2+bx+c$ , so we have:

$h(x)=-5(x-1)^2+45\\h(x)=-5(x^2-2x+1)+45\\h(x)=-5x^2+10x-5+45\\h(x)=-5x^2+10x+40$

We can say the values of a,b, and c, now to be:

a = -5

b = 10

c = 40

The number of seconds at which the max would occur is given by the point, x, at:

$x=-\frac{b}{2a}$

We know a and b, let's find the seconds, x,

$x=-\frac{b}{2a}=-\frac{10}{2(-5)}=-\frac{10}{-10}=--1=1$

Hence,

1 seconds after being thrown, the stone reach its max height

6 0

2 years ago

Read 2 more answers

The area of the following equilateral triangle is 62.4 square feet that is he height

Vikentia [17]

The height of this triangle would be 10.4

In order to find this, you first must find the length of the sides. Using a manipulated formula for area of an equilateral triangle, we can determine the lengths of the side. Below if the formula.

S = $\frac{2}{3}3^{\frac{3}{4}} \sqrt{A}$

In this, S is the length of the side and A is the area. So we plug in and get:

S = $\frac{2}{3}3^{\frac{3}{4}} \sqrt{62.4}$

S = $\frac{2}{3}3^{\frac{3}{4}} 7.89$

S = 12

Now that we have the side as 12, we can use the Pythagorean Theorem to find the height. If you split a equilateral triangle down the middle, you are left with two right triangles. Using this right triangle, the hypotenuse would be 12, the first leg would be 6 (half of the base) and the height would be the other leg. So we plug in and solve.

$a^{2} + b^{2} = c^{2}$

$6^{2} + h^{2} = 12^{2}$

$36 + h^{2} = 144$

$h^{2} = 108$

h = 10.4

5 0

2 years ago