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3 years ago

Linear Equations w/ Distribution 5(2x+4)=40 step by step explanation

1 answer:

Ivan3 years ago

3 0

5(2x+4)=40 [distribute 5]
10x+20=40
10x=40-20 [move 20 to RHS and make it a negative]
10x=20 [divide both sides by 10]
x=2

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Some fireworks are fired vertically into the air from the ground at an initial velocity of 24.5 meters per second. Find the high

krek1111 [17]

Answer:

The highest point reached by the firework is approximately 30.6 meters

Step-by-step explanation:

The upward velocity of the fireworks is given as 24.5 m/s

The equation of projectile motion for an object fired vertically upwards can be written as follows;

v² = u² - 2·g·s

Where;

v = The final velocity of the motion = 0 m/s at maximum height

u = The final velocity of the motion = 24.5 m/s

g = Acceleration due to gravity = 9.81 m/s²

s = The height reached = (The highest point reached by the firework)

By substituting the values, we have;

(0 m/s)² = (24.5 m/s)² - 2 × 9.81 m/s² × s

Which gives;

2 × 9.81 m/s² × s = (24.5 m/s)² = 600.25 m²/s²

19.62 m/s² × s = 600.25 m²/s²

s = 600.25 m²/s²/(19.62 m/s²) = 30.594 m ≈ 30.6 meters

The highest point reached by the firework is approximately 30.6 meters

3 0

3 years ago

Please answer thx people

AlladinOne [14]

159

10 squared is 100
Do the 5+3 next to get 8 then square the 8 to get 64

That leaves you with 100+64-5=159

5 0

3 years ago

Read 2 more answers

A certain shampoo is available in two sizes. A 12.6-ounce bottle costs $2.37. A 25.3-ounce bottle costs $5.24.

neonofarm [45]

Answer:

The 12.6 oz bottle

Step-by-step explanation:

0.19/oz for the 12.6 oz

0.21/oz for the 25.3 oz

4 0

3 years ago

The data represents the number of days it takes for different tomato plant to produce tomatoes. Use the information to complete

andre [41]

Answer:

1, 5, 10, 10, 7, 1

Step-by-step explanation: Count

5 0

3 years ago

Answer gets BRAINLIEST If q varies inversely as r, and g = 10 when r = 2.5, find the equation that connects a

vladimir1956 [14]

Answer:

Step-by-step explanation:

In direct variations, we would have:

$q=kr$

Where k is some constant.

Since this is indirect variation, instead of that, we would have:

$q=\frac{k}{r}$

To determine the equation, find k by putting in the values for q and r:

$10=\frac{k}{2.5}\\k=2.5(10)=25$

Now plug this back into the variation:

$q=\frac{25}{r}$

The answer is D.

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4 years ago