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Anastaziya [24]
3 years ago
9

a car rolls backward from -2 to -10 m/s in 4 seconds. what is the acceleration. PLEASE HELP WILL GIVE BRAINLIEST

Mathematics
1 answer:
dsp733 years ago
4 0

The change in velocity = -10 - -2 = 8 m/s

The time was 4 seconds.

Acceleration = 8 m/s / 4 s = 2 m/s^2

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At a sale, dresses were sold for $90 each. This price was 75% of a
gulaghasi [49]

Answer:

A dress originally costs $120

Step-by-step explanation:

To find the original cost of the dress, we will follow the steps below;

let x represent the original cost of the dress

75% of x  = $90

\frac{75}{100}  ×    x   = $90

\frac{75X}{100}  =   $90

MULTIPLY both-side of the equation by 100

\frac{75X}{100} × 100 =   $90×100

At the right-hand side of the equation, 100 will cancel out 100, leaving us with just 75x

75x = $9000

DIVIDE both-side of the equation by 75

75x/75 = $9000/75

At the left-hand side of the equation 75 will cancel-out 75 leaving us with just x

x=  $9000/75

x = $120

A dress originally costs $120

3 0
3 years ago
Write the equation in point-slope form of the line that passes through the given points.
Lera25 [3.4K]

Answer:

y-6=-1/3(x+6)

Step-by-step explanation:

y-y1=m(x-x1)

m=(y2-y1)/(x2-x1)

m=(3-6)/(3-(-6))

m=-3/(3+6)

m=-3/9

simplify

m=-1/3

y-6=-1/3(x-(-6))

y-6=-1/3(x+6)

4 0
3 years ago
Can someone please help me please
harina [27]

Answer:

If two angles are congruent, then they have the same measure.

Step-by-step explanation:

8 0
3 years ago
A cylinder holds 27.72 litres of water,when full.Find the hieght of the cylinder if the diameter is 42cm​
krek1111 [17]

Answer:

27.72litres=27.72×1000 cm^3

(¡)Height of cylinder=27720×7/(22×21^2)=20cm

Step-by-step explanation:

(¡)First convert litres in to cm^3 take it as the volume of the cylindrical container

(¡¡)Then use V=22/7×r^2×h equation and substitute the values to V and r. Then find the value of h

#V=27.72×1000 (V= volume)

# r = 42/2=21 (r = radius)

8 0
3 years ago
Natasha found that the 14 inches from her knee joint to her hip joint was
enot [183]
14 (inches) times 4 = 56 inches which would be 4.6 feet tall
7 0
3 years ago
Read 2 more answers
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