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Alinara [238K]
3 years ago
8

What's the dot product of u = <-9, 4> and v = <1,3>? Thanks!

Mathematics
1 answer:
Leno4ka [110]3 years ago
8 0
\langle-9,4\rangle\cdot\langle1,3\rangle=(-9)(1)+(4)(3)=-9-12=-21
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I need help on #4 ASAP!!!!
kodGreya [7K]
Hi there. 

A triangle's interior angles must always add up to 180 degrees. Since we already have one measurement, 56, we can set up an equation to solve for the missing angles.

(2x + 4) + 56 + x= 180; solve for x.
Subtract 56 from both sides.
(2x + 4) + x = 124;
Combine like-terms (x).
3x + 4 = 124;
Subtract 4 from both sides.
3x = 120
Divide both sides by 3 to solve for x.
x = 40.

Now, we need to substitute x with 40 in each of our angles to determine their measurements.
2x + 4; x = 40.
2(40) + 4 = 80 + 4 = 84; 
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x = 40 is another measurement on its own.

Our measurements are:
56, 84, and 40.

Your corresponding answer choice is H.) 56, 84, 40.

I hope this helps!
7 0
3 years ago
When the function f(x) = 6(9)x is changed to f(x) = 6(9)x + 1, what is the effect? (5 points) There is no change to the graph be
amm1812

Answer:

The y-intercept is 1 space higher.

Step-by-step explanation:

y goes up by 1.

4 0
3 years ago
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Will some one please help me asap
olya-2409 [2.1K]
Formula: Circumference = πD

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3 years ago
Alex and Peter win some money and share it in the ratio 3:5. Alex gets £33. How much did Peter get?
IgorLugansk [536]

Answer:

Step-by-step explanation:

Set it up as fractions, Alex over Peter.

3/5 : 33/x  Let x represent Peter's amount.  Now find out: how do you get from 3 to 33?  What times 3 equals 33?  11

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Peter will get 55.  Don't forget the pound symbol.

5 0
3 years ago
What are the coordinates plz
pogonyaev
(3,5) (3,2) (5,2) are the coordinates
5 0
2 years ago
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