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2 years ago

Simplify the following expression: (2a - 3) + (-a + 5) PLEASE HELP ME

Mathematics

2 answers:

Feliz [49]2 years ago

8 0

Answer:

(a+2)

Soo you could solve by removing the parenthesis, then combining all like terms. Then subtract.

lubasha [3.4K]2 years ago

5 0

Your answer would be 1a+2
Or a+2

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Eighty less than three times a number?

Ivan

Answer:

30 x 3 - 80 is 10

Step-by-step explanation:

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2 years ago

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Determine forms of exponential expressions please help

Irina-Kira [14]

Answer:

(36^t) / (6^(t^2)) is nonequivalent

(6^(t^2)) / (36^t) is equivalent

(6^(t^2)) * 36^t is nonequivalent

Step-by-step explanation:

We can use the exponential quotient law for this problem.

a^x / a^y = a^x - y

(6^(t^2)) / (6^2t) = (6^(t^2)) / (36^t)

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2 years ago

The volume of an oblique pyramid with a square base is V units3 and the height is h units.Which expression represents the area o

melamori03 [73]

Answer: a) $\dfrac{3V}{h}\ units^2$

Step-by-step explanation:

We know that the volume of an oblique pyramid is given by :-

$\text{Volume}=\dfrac{1}{3}\text{(Base Area x height) }$

If the volume of an oblique pyramid with a square base is V units³ and the height is h units.

Then, we have

$V=\dfrac{1}{3}\text{(Base Area x h) }$

Multiply 3 on both sides , we get

$3V=\text{(Base Area x h) }$

Divide both sides by h , we get

$\dfrac{3V}{h}=\text{Base Area }$

i.e. $\text{Base Area }=\dfrac{3V}{h}\ units^2$

Hence, the expression represents the area of the base of the pyramid = $\dfrac{3V}{h}\ units^2$

Hence, the correct answer is a) 3 v/h units^2

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2 years ago

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Attachment below <br> algebra helppppp

yKpoI14uk [10]

Answer: second option.

Step-by-step explanation:

In order to solve this exercise, it is necessary to remember the following properties of logarithms:

$1)\ ln(p)^m=m*ln(p)\\\\2)\ ln(e)=1$

In this case you have the following inequality:

$e^x>14$

So you need to solve for the variable "x".

The steps to do it are below:

1. You need to apply $ln$ to both sides of the inequality:

$ln(e)^x>ln(14)$

2. Now you must apply the properties shown before:

$(x)ln(e)>ln(14)\\\\(x)(1)>2.63906\\\\x>2.63906$

3. Then, rounding to the nearest ten-thousandth, you get:

$x>2.6391$

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2 years ago

Which two linear equations represent perpendicular lines? select two choices?

denis23 [38]

In order for two linear lines to be perpendicular, the product of their gradient must be -1.

Let's take y = x + b and y = -x + b
This is already in the form: y = mx + b, where m is 1 and -1 respectively.
Since the product of their gradient is -1, they are said to be perpendicular.

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2 years ago