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Mathematics

1 answer:

dmitriy555 [2]3 years ago

6 0

Answer:

Step-by-step explanation:

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What is the answer for 4y^2=81

Elena L [17]

Answer:
either y = 4.5
or y = -4.5

Explanation:
To get the solution, we will need to isolate the y on one side of the equation.
This can be done as follows:
4y² = 81

 $\frac{4y^2}{4} = \frac{81}{4}$

y² = 20.25

y = +/- √(20.25)
either y = +√(20.25) = 4.5
or y = -√(20.25) = -4.5

Since there are no restrictions on the value of y, therefore, both answers would be accepted

Hope this helps :)

3 0

3 years ago

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One number is -3 times the first number. The sum of the numbers is -4. What is the second number?

kobusy [5.1K]

Lets say that the first number is x and the second number is y.
from the question we know that:
y=-3x and x+y=-4
from there, you need to replace the y in the second equation with -3x since we know that is what y equals so we can have an equation with only one variable.
x+-3x+-4
Then you solve for x.
-2x=-4
x=2
then you find y with the fact that y=-3x
y=-6

6 0

3 years ago

What is the equation in point slope form of a line that passes through the point (−8, 2) and has a slope of 12 ? Drag a number,

NemiM [27]

Point-slope form:

y − b = m(x − a), where m is the slope and (a, b) is a point on the graph.

Here that would look like:

y - 2 = 12(x - (-8))
y - 2 = 12(x + 8)

The answer:
y - 2 = 12(x + 8)

Hope this helps.

5 0

3 years ago

10 ways to divide 96 into equal groups

Andrew [12]

These are the ten ways to divide 96 into equal groups:

96 divided by 2 = 2 groups of 48

96 divided by 48 = 48 groups of 2

96 divided by 12 = 12 groups of 8

96 divided by 8 = 8 groups of 12

96 divided by 32 = 32 groups of 3

96 divided by 3 = 3 groups of 32

96 divided by 24 = 24 groups of 4

96 divided by 4 = 4 groups of 24

96 divided by 6 = 6 groups of 16

96 divided by 16 = 16 groups of 6

4 0

3 years ago

PLS HELP ME WITH THE ANSWER !!!

Sladkaya [172]

Answer: m is less than or equal to -7

Step-by-step explanation:

7 0

3 years ago

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