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2 years ago

PLEASE HELP

Mathematics

1 answer:

Dmitry_Shevchenko [17]2 years ago

5 0

Answer:12p+36>480

Step-by-step explanation: I got the answer somewhere else but I’m not 100% sure if it’s right

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Solve algebraically for x

Anton [14]

3x + 1 = (x-1)^2
3x + 1 = x^2 - 2x + 1
0 = x^2 -5x
0 = x(x-5)
x = 0,5

Hope this helps!

4 0

3 years ago

Aline has a slope of 6 and includes the points (-9, 0) and (-8, a). What is the value of a?

Lunna [17]

Answer:

a = 6

Step-by-step explanation:

Given information:

Slope = 6

Coordinates: (-9, 0) and (-8, a)

Slope formula = y2 - y1 / x2 - x1

Substitute the given values into the formula.

6 = a - 0 / -8 - (-9)

6 = a - 0 / 1

6 = a - 0

a = 6

hope this helps!! p.s. i really need brainliest :)

3 0

1 year ago

How many rational numbers are between 1 and 6?

gregori [183]

one ans six are infinite

6 0

2 years ago

A salesperson receives step commission on sales calculated as follows: * 8% on first $1000 _________________ * 12% next $2000 __

Sonja [21]

Step-by-step explanation: Assuming the commission is calculated on a weekly basis and no sales were made on Saturday or Sunday:

Total Sales = $12794.23

8% of $1000 = $80

12% of $2000 = $240

20% of $9794.23 = $1958.85

Total = $2278.85

4 0

2 years ago

Determine the mass of a solid steel ball that has a diameter of 10 cm. The density of pure steel is 8.09 g/cm3

Basile [38]

Answer:

The mass of the steel ball is 4,235.9 gr

Step-by-step explanation:

Density

The density ρ of a substance is a measure of its mass per unit volume:

$\displaystyle \rho=\frac{m}{V}$

If the density and the volume are given, the mass can be calculated by solving the above formula for m:

$m=\rho.V$

We know the density of pure steel ρ=8.09 gr/cm3 and the diameter of a solid steel ball d=10 cm.

We need to calculate the volume of the sphere:

The volume of a sphere of radius r is given by:

$\displaystyle V=\frac{4}{3}\cdot \pi\cdot r^3$

The radius is half the diameter: r= 10/2 = 5 cm. Thus:

$\displaystyle V=\frac{4}{3}\cdot \pi\cdot 5^3$

Calculating:

$V=523.6\ cm^3$

The mass is:

$m=8.09 gr/cm^3 \cdot 523.6\ cm^3$

m=4,235.9 gr

The mass of the steel ball is 4,235.9 gr

4 0

2 years ago