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Lunna [17]
3 years ago
13

Help me plzzzzz need help

Mathematics
1 answer:
WARRIOR [948]3 years ago
4 0

Answer:

D.

15/20, 0.75

Hope this helps! :)

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2x+5(-3x-10)=-154 I just need to know for this one so I can do the rest
allochka39001 [22]
2x + 5(-3x-10) = - 154
2x -15x -50 = -154
-13x = -104
13x = 104
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Graph this function: f(x)=x2-4x-5
Maksim231197 [3]
A would be 1 as b would be -4

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Rita ha decidido emprender un negocio de ventas de productos de protección personal, para lo cual tiene que inventir 1/3 de su d
d1i1m1o1n [39]

Answer:

3/10

Step-by-step explanation:

Subtract the sum of 1/3, 4/15 and 1/10 from 1:

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3 years ago
A student is trying to calculate the density of a ball. She already knows the mass, but she needs to determine the volume as wel
mario62 [17]
<h2>Answer and Explanation:</h2><h2 />

The density of a substance is defined as its mass per unit volume. In a mathematical language, this can be written as follows:

\rho=\frac{m}{V} \\ \\ \\ Where: \\ \\ \rho: \ density \\ \\ m:mass \\ \\ V:Volume

From the problem, a student is trying to calculate the density of a ball. She already knows the mass, but is facing a problem because she also needs to find the volume. From geometry, we know that the volume of a sphere is:

V=\frac{4}{3} \pi r^{3}

Since a ball is a sphere, then the student can use this formula. She just need to measure the radius of the ball and compute the Volumen, then she have to plug both the value of the mass and the value of the Volume in the equation \rho=\frac{m}{V}. An easy way to find the radius is to take the measure of the diameter of the ball and divide that value by 2.

6 0
3 years ago
write an equation in standard form for a line that is parallel to the line with an equation of y=3x-5 that passes through the po
lana66690 [7]

Answer:

The standard form of the equation is -3x + y = -19

Step-by-step explanation:

To find the standard form, we first need to note that the slope will be 3 since parallel lines have the same slope. Then we can use point-slope form and manipulate into standard form.

y - y1 = m(x - x1)

y - 5 = 3(x - 8)

y - 5 = 3x - 24

-3x + y - 5 = -24

-3x + y = -19

3 0
3 years ago
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