All categories

4 years ago

Can someone help??plzzz..

Mathematics

1 answer:

Sav [38]4 years ago

4 0

When you are multiplying 2 numbers with exponents, you need to add the exponent. When you multiply an exponent with an exponent, you multiply them.

So,
(3^2 x 7^4) ^9
First multiply the base and add exponents = ( 21^6) ^9
= 21 ^6x9
21^54
The same rule applies for variables, just pretend there is an imaginary 1.

You might be interested in

the average or the blank is the blank divided by the blank or the amount of numbers being divided is what

wel

Answer:

Numerrator is the denominator divieded by the other equations is the sum.

Step-by-step explanation:

Hope I helped

8 0

3 years ago

the average weight of a mature human brain is approximately 1400 grams what is the equivalent weight in kilograms in pounds

Harman [31]

1400 grams in kilograms = 1.4
1400 grams in pounds = 3.086472

3 0

3 years ago

a parabola has x intercepts of -1 and 3 it passes through the point (1,6) write the equation if the parabola

matrenka [14]

$\boxed{f(x)=-\frac{3}{2}x^2+3x+\frac{9}{2}}$

<h2>Explanation:</h2>

The Standard Form of the equation of a parabola is given by the form:

$y=ax^2+bx+c$

As y is a function of x, then we can write:

$y=f(x)=ax^2+bx+c \\ \\ a, \ b, c \ Real \ Coefficients$

Also, we can write $f(x)$ in factored form as:

$f(x)=a(x-x_{1})(x-(x_{2}) \\ \\ x_{1} \ and \ x_{2} \ Are \ the \ roots$

In this case:

$x_{1}=-1 \\ \\ x_{2}=3$

So:

$f(x)=a(x-(-1))(x-3) \\ \\ f(x)=a(x+1)(x-3)$

We also know that the parabola passes through the point (1,6):

$f(1)=6=a(1+1)(1-3) \\ \\ Isolating \ a: \\ \\ 6=a(2)(-2) \\ \\ 6=a(-4) \\ \\ a=-\frac{6}{4} \\ \\ a=-\frac{3}{2}$

Finally, the equation of the parabola is:

$f(x)=-\frac{3}{2}(x+1)(x-3)$

Or applying Distributive Property:

$f(x)=-\frac{3}{2}\left(x^2-2x-3\right) \\ \\ \boxed{f(x)=-\frac{3}{2}x^2+3x+\frac{9}{2}}$

<h2>Learn more:</h2>

Piecewise-defined function: brainly.com/question/12169258

#LearnWithBrainly

3 0

3 years ago

If a tree in a 1 in. : 2 ft. scale drawing is 10 inches tall, how tall is the actual tree?

Citrus2011 [14]

Answer:

20 feet tall

Step-by-step explanation:

Since it is 1 in: 2ft and the drawing is 10 in, you multiply 10 by 2 and get 20 feet.

(hope this helps!)

4 0

3 years ago

Which angle number represents an angle adjacent to NSM?

creativ13 [48]

Answer: Answer:

1) LSM.

2)complementary angles

3)*linear pair

Step-by-step explanation:

1) Vertical angles are formed on opposite side at the intersection of two lines .In the given figure the angle vertical to OSN is LSM and hence they are vertical pair.

2) The pair of angles LSM and SMN are neither adjacent angles nor linear pair or vertical angles .Hence we can call them complementary angles.Complementary angles are one which add to 90 degrees.

3) The angle pair are NSM and MSL lie on a straight line and hence are called linear pair.

3 0

2 years ago