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scZoUnD [109]
2 years ago
13

. Use the vectors v = -i +2j and w= -3i + 4j to find 5v + 8w.

Mathematics
1 answer:
Anarel [89]2 years ago
5 0
  • 5v+8w

put values

  • 5(-i+2j)+8(-3i+4j)

Do like you do algebraic addition

  • -5i+10j-24i+32j
  • -5i-24i+10j+32j
  • -29i+42j

Option A

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Tyler read 15 pages of a book. Ann read 9 pages of the same book. Did tyler read 4 more pages than Ann?. Explain
Marysya12 [62]
No because Tyler read 15 pages and 9 plus 4 is 13 fewer then what Tyler read
7 0
3 years ago
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Solve x^5-4x^3 is less than or equal to 0
Aleks04 [339]
Solve for x over the real numbers:
x^3 (x^2 - 4) = 0

Split into two equations:
x^3 = 0 or x^2 - 4 = 0

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Add 4 to both sides:
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Take the square root of both sides:
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5 0
3 years ago
Help me guys for 7 8 10 and 11 please
mixas84 [53]
I believe #7 would be 5:13, #8 to be 6:7, #9 to be 13:18, #10 to be 18:5.
I hope this helps.
8 0
3 years ago
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EASY MATH!!! GIVING BRAINLIEST!!
musickatia [10]

Answer:

55

Step-by-step explanation:

So lets take our 50 dollars.

Next, take your increase of 5%. Remember, 5% is 0.05, and it is a increase of 5%, so we are multipling 50 by 1.05.

Before we start multiplying, lets recall that this occurs twice(2 years), but this doesnt mean we multiply 50 by 1.10. No, we just mutiply 50 by 1.05 2 times:

50*1.05

=

52.5

52.5*1.05

=

55.25

So your answer is 55 dollars(rounding down).

Hope this helps!

4 0
2 years ago
If y varies inversely as x and y = 8 when x = 9, find x when y = 12.
myrzilka [38]

Answer:

x = 6

Step-by-step explanation:

An inverse variation is

xy = k where k is the constant of variation

8*9 = k

72 = k

xy = k

Let y = 12

x*12 = 72

Divide each side by 12

12x/12 =72/12

x = 6

5 0
3 years ago
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