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3 years ago

Pls pls help me ASAP

Mathematics

1 answer:

Maru [420]3 years ago

6 0

Answer:

1. 27.5 in.^2

2. 360 in.^2

Step-by-step explanation:

A = bh/2

A = (4 + 7)(5)/2

A = 27.5 in.^2

A = bh/2

A = (35 + 13)(15)/2

A = 360 in.^2

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This system has one solution, what is the y-coordinate of the solution.

Lyrx [107]

The coordinates would be -3, 10.
This Website helps a lot. www.meta-calculator.com

5 0

3 years ago

7.8 X 103 -------------- 1.2 X 104

Strike441 [17]

;-;

Let's just do a bunch of math below.

7.8 X 103 ?

-------------- = ------

1.2 X 104 ?

So, first, we're gonna do 7.8 multiplied by 103 to get 803.4.

Thus....

7.8 X 103 803.4

-------------- = -----------

1.2 X 104 ?

Then we would do 1.2 multipied with 104 to get a product of 124.8.

Therefore....

7.8 X 103 803.4

-------------- = -----------

1.2 X 104 124.8

Dividing 803.4 by 124.8 would get you a quotient of 6.4375.

Your answer is 6.3475.~

Have a nice day~

5 0

3 years ago

Find the equation of the line between the points (10, – 5) and ( - 2,0).

Natali5045456 [20]

Answer (assuming it can be in slope-intercept form):

$y = -\frac{5}{12} x-\frac{5}{6}$

Step-by-step explanation:

1) First, find the slope of the line between the two points by using the slope formula, $m = \frac{y_2-y_1}{x_2-x_1}$ . Substitute the x and y values of the given points into the formula and solve:

$m = \frac{(0)-(-5)}{(-2)-(10)} \\m = \frac{0+5}{-2-10} \\m=\frac{5}{-12}$

Thus, the slope of the line is $-\frac{5}{12}$ .

2) Next, use the point-slope formula $y-y_1 = m (x-x_1)$ to write the equation of the line in point-slope form. Substitute values for $m$ , $x_1$ , and $y_1$ in the formula.

Since $m$ represents the slope, substitute $-\frac{5}{12}$ in its place. Since $x_1$ and $y_1$ represent the x and y values of one point the line intersects, choose any of the given points (it doesn't matter which one, it will equal the same thing) and substitute its x and y values into the formula as well. (I chose (-2,0), as seen below.) Then, isolate y and expand the right side in the resulting equation to find the equation of the line in slope-intercept form:

$y-(0)=-\frac{5}{12} (x-(-2))\\y-0 = -\frac{5}{12} (x+2)\\y = -\frac{5}{12} x-\frac{5}{6}$

3 0

3 years ago

Please help me with this question.

Hunter-Best [27]

Answer:

b. Shift left 3 units

Step-by-step explanation:

You're given

y = √(x + 3)

y = √(x - (-3))

y = √(x - amount_shifted)

amount shifted = -3

so shifted 3 units and the negative means it's shifted to the left

8 0

4 years ago

From an airplane at an altitude of 1200m the angle of depression to a rock on the ground measures 28. Find the distance from the

nasty-shy [4]

Given that the plane is at altitude of 1200m and the angle of depression is 28°, to calculate the distance between the the plane and the rock we assume that we a have right triangle whereby the distance of the plane form the ground is the height, the distance from plane to the rock is the hypotenuse and the remaining distance is the base:
thus

sin θ=opposite/hypotenuse
θ=28°
opposite=1200m
hypotenuse=h
thus
sin 28=1200/h
h=1200/sin 28
h=2556.065 m

6 0

3 years ago