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antiseptic1488 [7]
3 years ago
11

Please help me out! as soon as possible!!! I will give you brainiest!

Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
5 0

Answer:

give me brainlyest

Step-by-step explanation:

0 x i took the quiz

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Truck covers 40 m in 8.5 seconds slowing to a final speed of 2.8 m/s find original speed
sergejj [24]
V = u + at
2.8 = u + a*8.5
2.8 = u + 8.5a

s = ut + 0.5at^2
40 = u*8.5 + 0.5*a*8.5^2
40 = 8.5u + 36.125a

(2.8 = u + 8.5a) * 8.5
23.8 = 8.5u + 72.25a

Subtract those equations
16.2 = - 36.125a
a = 0.448

2.8 = u + (8.5*-0.448)
2.8 = u - 3.8
u = 6.6 m/s

7 0
3 years ago
Everytime Evan walks his neighbors. He gets $8 and he has four or five times and there's a video game
Mariulka [41]
So what’s the question
8 0
3 years ago
A rectangle has a length that is 12 ft longer
Reil [10]
4x+24=84 4x=60 x=15 length =27 width = 15
7 0
2 years ago
What is the slope of (-1,6) and (2,3)?
LenKa [72]

Answer:

-1

Step-by-step explanation:

For a line joining two points (x1, y1) and (x2, y2), it's slope is given as:

\boxed{ \mathsf{slope =  \frac{ y_{2} -y  _{1}}{ x_{2} - x _{1}} }}

Here, the two points are (-1, 6) and (2, 3) in place of (x1, y1) and (x2, y2).

Solving for slope:

\implies \mathsf{ \frac{3 - 6}{2 - ( -1 )} }

\implies \mathsf{ \frac{ - 3}{2  + 1 } }

\implies \mathsf{ \frac{ - 3}{3 } }

\implies \mathsf{  - 1 }

Hence, the slope of the line joining the given points is <u>-1.</u>

4 0
3 years ago
A snow plough has a 3.2m blade set at an angle of 30 degrees How wide a path will the snow plough clear
snow_tiger [21]

Answer:

1.6m

Step-by-step explanation:

The length of the blade is 3.2m

The angle which the blade makes is 30°

Assuming the path of the blade and the length it covers is a right-angled triangle,

The length of the blade is the hypothenus while the path at which it clears is the opposite of the triangle.

See attached document for better illustration.

Using SOHCAHTOA,

Sinθ = opposite / hypothenus

opposite = x

hypothenus = 3.2

θ = 30°

Sin30 = x / 3.2

X = 3.2sin30

X = 3.2 × 0.5

X = 1.6m

The path which the snow plough clears is 1.6m

6 0
3 years ago
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