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dolphi86 [110]
3 years ago
12

Help me with number 10 pleaseeeeeeeeee

Mathematics
1 answer:
valina [46]3 years ago
6 0

Answer:

4' - 9.64

Step-by-step explanation:

Total rise = 2' - 7"

Total run = 3' - 9"

Converting to inches :

1' = 12" ; 1 feet = 12 inches

2' = 2 * 12 = 24"

3' = 3 * 12 = 36"

Total rise = 24" + 7" = 31"

Total run = 36" + 9" = 45"

Length of stringer = hypotenus

Hypotenus = √(total rise² + total run²)

Hypotenus = √(31² + 45²)

Hypotenus = 54.644304"

= 4' - 9.64"

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Please help!!!!!<br>Solve the equation 5(2y - 1) - 2(3y)= 1<br>​
-Dominant- [34]

Answer:

y = 3/2

Step-by-step explanation:

5(2y - 1) - 2(3y) = 1

First we use distributive property:

10y - 5 - 6y = 1

because 5 × 2y = 10y

and -2 × 3y = -6y

Now we combine the like terms:

4y -5 = 1

because 10y - 6y = 4y

Now we have to send the -5 to the other side. (when we send it to the other side it becomes positive because right now it is negative)

4y = 1 + 5

Again we combine the like terms:

4y = 6

(because 5 + 1 = 6)

Now we have to send the 4 to the other side because we need to get the y value. (when we send it to the other sidr it will be divided)

y = 6/4

and we simplify:

y = 3/2

And we cannot simplify or do anything else. So that is the answer.

Hope that helped!

5 0
4 years ago
      A light plane flew from its home base to an airport 255 miles away. With a head wind, the trip took 1.7 hours. The return
ryzh [129]
The speed from home base to airport was:
v=255miles/1.7h\ /:1.7\\v=150mph
The speed from airport to home base was:
v=255miles/1.5h\ /:1.5\\v=170mph
Average speed of plane was:
\frac{170mph+150mph}{2}=160mph
Average speed of wind was:
x\ -\ wind\ speed\ (mph)\\150+x=170-x\ /+x\\150+2x=170\ /-150\\2x=20\ /:2\\x=10
Answer: Average speed of plane was 160mph and average speed of wind was 10mph.

I hope I helped :D
6 0
4 years ago
Read 2 more answers
Find the circumference of circle K. Round your answer to the nearest tenth of a centimeter and use 3.14 to approximate pi. (It's
Julli [10]
Y
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−
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Use the slope-intercept form to find the slope and y-intercept.
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Slope:
−
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-
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y-intercept:
(
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5
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(
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Any line can be graphed using two points. Select two
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x
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8 0
3 years ago
A triangle has vertices at L(2, 2), M(4, 4), and N(1, 6). The triangle is transformed according to the rule R0, 180°. Which stat
anzhelika [568]
A rotation of a point on the coordinate system for 180 degrees about the origin results in (x, y) → (-x, -y).

Given that the coordinate of L is (2, 2), then the coordinates of L' is (-2, -2).

Given that the coordinates of N is (1, 6), then the coordinate of N' is (-1. -6)

Therefore, the <span>statements that are true regarding the transformation are:

</span><span>The rule for the transformation is (x, y) → (–x, –y).
</span>
<span>The coordinates of L' are (–2,–2).

The coordinates of N' are (–1,–6).</span>
7 0
3 years ago
Read 2 more answers
If ΔABC is an equilateral triangle with, AB = 2x + 17, BC = 6x - 19, AC = 4x-1, find x and the measure of each side
Soloha48 [4]

Answer:

x=9, AB=BC=AC=35

Step-by-step explanation:

Equilateral triangles have 3 congruent sides, so all 3 sides have the same length. Therefore, we know that AB=BC=AC. We are given the lengths of all 3 sides in terms of x, but we only need to set two of them equal to each other to solve for x. Let's use AB and BC to solve for x. We know that AB=BC, AB=2x+17, and BC=6x-19. Therefore, we can write the following equation to solve for

AB=BC\\2x+17=6x-19 (Substitute given values into equation)

Solving for x, we get:

2x+17=6x-19\\2x+17-17=6x-19-17 (Subtract 17 from both sides of the equation to isolate constants)

2x=6x-36 (Simplify)

2x-6x=6x-36-6x (Subtract 6x from both sides of the equation to isolate x)

-4x=-36 (Simplify)

\frac{-4x}{-4}=\frac{-36}{-4} (Divide both sides of the equation by -4 to get rid of x's coefficient)

x=9 (Simplify)

Therefore, AB=2x+17=2*9+17=18+17=35, and AB=BC=AC=35. Hope this helps!  

3 0
3 years ago
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