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3 years ago

3/4x+3y=12 for x when y=5

1 answer:

4 0

Solve for x by simplifying both sides of the equation, then isolating the variable.
x = -4
Hope this helps! :)
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A vase with a circular base exerts a force of 15 N on a table with a pressure of 750 N/m2.

DiKsa [7]

The radius of the base of the vase in cm to 2 dp is 0.08m

<h3>Pressure of an object</h3>

The formula for calculating the pressure of a object is expressed as;

Pressure = Force/Area

Area = Force/Pressure

Area = 15/750

Areas = 0.02m²

Since the area of the circular base is πr², then;

πr² = 0.02

r² = 0.02/3.14

r = 0.0798m

Hence the radius of the base of the vase in cm to 2 dp is 0.08m

Learn more on pressure here; brainly.com/question/25736513

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6 0

2 years ago

Please Help!

sergeinik [125]

This question i know. It is C

4 0

3 years ago

Read 2 more answers

Flying against the wind, an airplane travels 2520 kilometers in 4 hours. Flying with the wind, the same plane travels 9450 kilom

bagirrra123 [75]

Using the relation between velocity, distance and time, it is found that:

The rate of the plane is of 840 km/h.

The rate of the wind is of 210 km/h.

<h3>What is the relation between velocity, distance and time?</h3>

Velocity is <u>distance divided by time</u>, that is:

$v = \frac{d}[t}$

Flying against the wind, an airplane travels 2520 kilometers in 4 hours, that is:

$v - v_w = \frac{2520}{4}$

$v - v_w = 630$

$v = 630 + v_w$

Flying with the wind, the same plane travels 9450 kilometers in 9 hours, hence:

$v + v_w = \frac{9450}{9}$

$v + v_w = 1050$

$v = 1050 - v_w$

Hence, solving for the wind's speed:

$630 + v_w = 1050 - v_w$

$2v_w = 420$

$v_w = \frac{420}{2}$

$v_w = 210$

For the plane, we have that:

v = 1050 - 210 = 840.

More can be learned about the relation between velocity, distance and time at brainly.com/question/24316569

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6 0

2 years ago

an amount of $41,000 is borrowed for 7 years at 6.75% interest, compounded annually. If the loan is paid in full at the end of t

Marianna [84]

Answer:

<u>We must pay back US$ 64,767.70 for the loan after 7 years.</u>

Step-by-step explanation:

1. Let's review the data given to us for answering the question:

Loan amount = US$ 41,000

Duration of the loan = 7 years

Interest rate = 6.75% compounded annually

2. Let's find the future value of this loan after 7 years, using the following formula:

FV = PV * (1 + r) ⁿ

PV = Loan = US$ 41,000

number of periods (n) = 7 (7 years compounded annually)

rate (r) = 6.75% = 0.0675

Replacing with the real values, we have:

FV = 41,000 * (1 + 0.0675) ⁷

FV = 41,000 * (1.0675) ⁷

FV = 41,000 * 1.5797

<u>We must pay back US$ 64,767.70 for the loan after 7 years.</u>

3 0

3 years ago

X2+11x+30 what does x2 mean

Alexxandr [17]

x^2 in the function that you typed is x * x ( x multiplied by x). It represents a second degree because there are only 2 "x"s multiplied together. If there were 3 "x"s multiplied together, we would have x^3. Since the highest exponent in this function is 2 (in x^2), we call this function a 2nd degree polynomial.

4 0

3 years ago