All categories

2 years ago

Please solve this, i will mark brainliest

Mathematics

2 answers:

Anton [14]2 years ago

7 0

Answer:

$k=-2$

Step-by-step explanation:

Let's write the left hand side as a negative power, and 9 as a power of 3:

$3^-^k=3^2$ At this point, for the equality to still stand, the exponents have to be equal:

$-k = 2 \rightarrow k=-2$

Mashutka [201]2 years ago

5 0

(1/3)k = 9
3 -k = 3 2
-k=2
K=-2

You might be interested in

What ratio is the same as 60%

andriy [413]

6:10 or 3:5 I believe
Hope this helps!

3 0

3 years ago

Read 2 more answers

Find the slope of the line that contains the points named a (o,d),b (d,o)

V125BC [204]

$\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
&({{ 0}}\quad ,&{{ d}})\quad 
% (c,d)
&({{ d}}\quad ,&{{ 0}})
\end{array}
\\\\\\
% slope = m
slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{0-d}{d-0}\implies \cfrac{-d}{d}\implies -1$

3 0

3 years ago

Read 2 more answers

What is the equation in slope-intercept form of a line with<br> slope -5/4 and y-intercept 2?

Irina18 [472]

Y = -5/4x + 2

y = mx + b. MX = slope, b = y int, they alr gave us slope and y-int, so just plug into equation form

Mark brainliest please

8 0

2 years ago

Read 2 more answers

The table represents some measurements that Johnny recorded in his math class. What values COULD x and y represent, respectively

Law Incorporation [45]

Based on the given data set:

x 1 2 3 4 5
y 1 8 27 64 125

the relationship between the two variables is notably:

y = x^3

this formula represents the volume of a cube:

V = s^3

Therefore, the answer is C) Side length and volume of a cube.

4 0

3 years ago

If V1 = (2,4) and V2 = (-1,5), then V1*V2is equal to which of the following? A. (-2,20) , B. 18 , C. 22 , D. (8,-5)

neonofarm [45]

B. 18

Explanation

The dot product or scalar product is an algebraic operation that takes two equal-length sequences of numbers (usually coordinate vectors), and returns a single number

it is given by.

$\begin{gathered} u=(u_x,u_y) \\ v=(v_{_x},v_y) \\ u\cdot v=(u_xv_x+u_yv_y) \end{gathered}$

so, we can find the dot product by multiplying the corresponding values in each vector and adding them together

Step 1

get the dot product

let

$\begin{gathered} v_1=(2,4) \\ v_2=(-1,5) \end{gathered}$

then

$\begin{gathered} v_1\cdot v_2=(2\cdot-1)+(4\cdot5) \\ v_1\cdot v_2=-2+20 \\ v_1\cdot v_2=18 \end{gathered}$

therefore, the answer is

B. 18

I hope this helps you

7 0

1 year ago