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irga5000 [103]
3 years ago
6

Which is the best description of 4 (21x÷7)

Mathematics
1 answer:
Lera25 [3.4K]3 years ago
4 0
If by description you mean simplification then: 84x/28
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10+(2x3)2 / 4 x (1/ 2)3
nydimaria [60]
My answer ‍♀️‍♀️☺️☺️

4 0
3 years ago
Write an equation of the line that passes through (2,5) and is parallel to the line 2y = 3x + 10.
Advocard [28]

Answer:

y = 3/2x - 8  hope I helped

Step-by-step explanation:

To find the equation of a line, we need a point and a slope. We're given a point, and we can easily get the slope. First let's solve 2y = 3x + 10 for y so we can get the slope (recall that y = mx + b is the slope-intercept form, and m is your slope).

2y = 3x + 10  --> almost there already, just divide everything by 2 to get y by itself.

y = 3/2x + 5 --> now you have it in the y=mx + b form, so your slope is 3/2

They asked for the parallel line, remember parallel lines have the same slope, therefore you use the same slope.

Now we know that our slope is m = 3/2 and our point is (2, -5)

You can always find the equation of a line using the Point-Slope Formula:

y - y1 = m(x - x1)    --> our x1 is 2 and our y1 is -5, and slope is 3/2

y - (-5) = 3/2(x - 2)   --> Be careful when you have minus a negative number, like we do here. It becomes:

y + 5 = 3/2(x - 2)  --> now distribute the 3/2

y + 5 = 3/2x - 6/2

y + 5 = 3/2x - 3  --> now we can subtract 5 from both sides to get it into slope intercept form.

y = 3/2x - 8  --> This is the equation of a line that is parallel to 2y=3x+10 & passes through (2, -5)

7 0
2 years ago
A ranch owner has 18 bales of hay to distribute in 3 cow pastures and 3 horse pastures. He wants each cow pasture to have the nu
Ivahew [28]

First way: 1 bale in each cow pasture and 5 bales in each horse pasture.

Second way: 2 bales in each cow pasture and 4 bales in each horse pasture.

Third way: 3 bales in every pasture.

Fourth way: 4 bales in each cow pasture and 2 bales in each horse pasture.

Fifth way: 5 bales in each cow pasture and 2 bale in each horse pasture.

There are 5 different ways.

7 0
3 years ago
You can use the _______ of a quadratic equation to determine the number and type of solutions
Dennis_Churaev [7]

Answer: Discriminant.


Step-by-step explanation:

1. The quadratic formula is:

x=\frac{-b+/-\sqrt{b^{2}-4ac}}{2a}

2. And the discriminant is inside the square root:

b^{2}-4ac

2. Then, if the discriminant is negative, the quadratic equation does not have real solutions, it has two imaginary solutions. If the discriminant is zero the quadratic has one solution. If the discriminant is positive, the quadratic equation has two distinct solutions.


7 0
3 years ago
Which expression represents the product of an unknown number and 19?
uysha [10]
A product is the result of multiplying
D
6 0
3 years ago
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