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3 years ago

How do you answer this question 3/4b +10=20

2 answers:

7 0

1) move the 10 over
So it becomes
3/4b = 10
2) multiply everything by 4 to get rid of the denominator
2b = 40
3) divide both sides by 2
b = 20

Volgvan3 years ago

4 0

$\frac{3}{4}b+10=20 \ \ \ \ | - 10\\\\ \frac{3}{4}b=10 \ \ \ \ | \cdot4\\\\3b=40 \ \ \ \ | : 3\\\\b=\frac{40}{3}\\\\ b=13\frac{1}{3}$

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Simplify 4a²+1/3a+5+a²+4+1/3a

vladimir2022 [97]

Answer:

$5a^2+\frac{2a}{3} + 9$

Step-by-step explanation:

Refer to file. Trying something different. Should be easier to read than text format and is easier than mathML.

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2 years ago

In a lab, a substance was heated by 48 Degrees Celsius over a period of 8 hours at a constant rate. what was the change in tempe

galben [10]

Answer: The change in temperature each hour was 6 degrees celsius.

Step-by-step explanation: 48 divided by 8 = 6

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3 years ago

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Brilliant_brown [7]

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3 years ago

WILL GIVE BRAINLIEST A rocket is launched vertically from the ground with an initial velocity of 64. Write a quadratic function

tiny-mole [99]

Answer:

$h=64t-4.9t^{2}$

Please refer to the attached graph.

Step-by-step explanation:

Given that

Initial velocity of rocket = 64 and is launched vertically.

To find:

Quadratic equation in time to represent the height of rocket in feet.

Solution:

Unit of initial velocity is not given in the question statement, let the velocity be in feet/second only.

Initial velocity, u = 64 feet/s

The acceleration will be = -g because it is going opposite to gravitational force so it will be negative acceleration motion (speed will be decreasing) so -g will be the acceleration.

Formula for distance traveled is given as:

$s=ut+\dfrac{1}{2}at^2$

Here Let us represent s by 'h'

a = -g = 9.8 m/ $s^2$

Let us put the known values in the formula:

$h=64t+\dfrac{1}{2}(-9.8)t^2\\\Rightarrow h =64t-4.9t^2$

It is a quadratic equation, the equation represents the graph of a parabola.

Please refer to the attached graph.

Value of height is 0 at 0 second and ~13 seconds

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3 years ago

A school bought $548 in basketball equipment and uniforms costing $29.50 each. The total cost was $2,023. write and equation you

andrezito [222]

29.50x - 548= 2,023

Or 2,023= 29.50x - 548

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3 years ago