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3 years ago

Can someone pleaseeee tell me what these areee

Mathematics

1 answer:

Dima020 [189]3 years ago

5 0

Question #9 - - 11/30

Question #10 - - 3/11

Question #8 - - 147/290

I really hope this helps. Good luck!

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Aubree invests money in an account paying simple interest. She invests $30 and no

Marianna [84]

Answer:

Step-by-step explanation:

$30 divided by 100= 0.3/1%

0.3x8=$2.40

$30+$2.4=32.40

8 0

2 years ago

Find the unit vector in the direction of u = (-3,2).

DENIUS [597]

$\bf \textit{unit vector for }(a,b)\implies \left( \cfrac{a}{\sqrt{a^2+b^2}}~~,~~\cfrac{b}{\sqrt{a^2+b^2}} \right)\\\\
-------------------------------\\\\
(-3,2)\qquad \stackrel{unit~vector}{\implies }\qquad \left( \cfrac{-3}{\sqrt{(-3)^2+2^2}}~~,~~\cfrac{2}{\sqrt{(-3)^2+2^2}} \right)
\\\\\\
\left( -\cfrac{3}{\sqrt{13}}~~,~~ \cfrac{2}{\sqrt{13}}\right)\\\\
-------------------------------$

$\bf \textit{and now let's \underline{rationalize} the denominator for each}
\\\\\\
-\cfrac{3}{\sqrt{13}}\cdot \cfrac{\sqrt{13}}{\sqrt{13}}\implies -\cfrac{3\sqrt{13}}{13} \qquad \qquad \qquad \qquad \cfrac{2}{\sqrt{13}}\cdot \cfrac{\sqrt{13}}{\sqrt{13}}\implies \cfrac{2\sqrt{13}}{13}
\\\\\\
\textit{and written in \underline{ai+bj form}}\qquad -\cfrac{3\sqrt{13}}{13}i~~~~+~~~~\cfrac{2\sqrt{13}}{13}j$

7 0

3 years ago

-4. (5 + 1) -3 + 3+ 2

antiseptic1488 [7]

Answer:

-13

Step-by-step explanation:

7 0

2 years ago

What slope would make the lines<br> parallel?<br> y = -3x + 9<br> y = [?]x + 4

Vladimir79 [104]

Answer:

- 3

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - 3x + 9 ← is in slope- intercept form

with slope m = - 3

Parallel lines have equal slopes, thus

y = - 3x + 4 ← is the equation of a parallel line

4 0

3 years ago

Math 64 times40 eaquels 2.56

UkoKoshka [18]

Answer:

Wrong. It equals 2560.

Step-by-step explanation:

<h2><u><em>PLEASE MARK AS BRAINLIEST!!!!!</em></u></h2>

4 0

2 years ago