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4 years ago

Giving 30 points to a good explanation/answer.

Mathematics

2 answers:

lys-0071 [83]4 years ago

4 0

Answer:

None of these are correct.

Step-by-step explanation:

Hello there!

If you are asked to multiply two expressions with exponents, add the exponents and place them on top of the original number.

The correct answer is $5^9$ .

jekas [21]4 years ago

4 0

Answer:

$5^{9}$

Step-by-step explanation:

Indicie multiplication works by adding the exponent presuming that the base is the same.

$4^{7}$ , 4 is the base and so stays the same, 7 is the exponent.

$x^{2}$ , here the equation is the same as x * x as exponents work by multiplying the base, x, by iteself y times, where y is the exponent and in this case 4.

As we know this, $x^{2} * x^{2}$ can be simplified too $x^{4}$ , which is the same as

x * x * x * x, so we know in such a situation we just add the two exponents together.

You might be interested in

Can someone help me with this?

Elden [556K]

Good evening ,

Answer:

{(1,6),(2,2),(4,7),(3,2)}

Step-by-step explanation:

As a function , f has a unique image for each number of the domain.

for instance, the first set can’t represent a function because 1 has more than one image(number).

7 0

3 years ago

No idea how to do this equation. Its applying system's of linear equations.

icang [17]

What you want to do is take one of the 2 equations and isolate one variable. you will then use the value that you find for the variable and plug it back into the other equation. here is how:

This would be easiest to do with the second equation in the set since the x is not being multiplied by anything. So lets isolate the x in the second equation.

add 0.9y to both sides and you get:

x=4.5+0.9y

we now know what x is equal to in terms of y. so lets replace the x in the first equation with the new value. You get:

1.5(4.5+0.9y)-1.9y=-29

Now just solve for y:
6.75+1.35y-1.9y=-29
1.35y-1.9y=-35.75
-0.55y=-35.75
y=65

so now you know that y=65 so plug 65 in as y in the second equation to find x

x-0.9*65=4.5

Now simply solve for x

x-(-58.5)=4.5
x+58.5=4.5
x=-54

Hope this helped! :)

3 0

3 years ago

Sarah started 3 miles below the rim of the canyon and hiked until she was 8 miles above the rim. Her brother Sam said she hiked

larisa86 [58]

Answer:

Step-by-step explanation:

We can assume that the rim of the canyon is 0. Sarah started 3 miles below, so -3, BUT distance can never be negative, so it's considered 3 miles. Then, she went 8 miles above zero. So the 3 miles she went before reaching the rim plus the 8 miles she went after reaching the rim equals 11 miles.

So now we know that Sarah is right, but how do we know which equation is correct? Well, if we look at option C:

$|-3+8|=11$

When solving absolute value, we solve everything within the absolute value before applying the absolute value. This means that we add -3+8 first, which equals 5, and then apply absolute value, which still equals 5. This equation is not correct.

I hope this helps!

3 0

3 years ago

Read 2 more answers

15 POINTS!!! Which of the following tessellations is a pure tessellation?

Art [367]

The 3rd one

Pure tessellations- uses only one shape

5 0

4 years ago

A swimming pool is to be drained. The pool is shaped like a rectangular prism with length 30 ft, width 18 ft, and depth 4 ft. Su

Licemer1 [7]

Answer:

10 hours (I am not positive)

Step-by-step explanation:

We first want to find the volume of pool which is 30 x 18 x 4 = 2160.

Then you are going to divide by 216 to find how many hours it takes to drain the whole pool. (I'm not that big of an expert)

4 0

3 years ago