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Tanzania [10]
2 years ago
5

Can someone pls help me with question 21

Mathematics
1 answer:
ziro4ka [17]2 years ago
4 0
1.24 x 10 to the power of 4 = 12400
3.71 x 10 to the power of 3 = 3710
12400-3710=8690
8690=8.69 x 10 to the power of 3
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I
valkas [14]

Answer: Y = 3/4x + 3

Step-by-step explanation:

If two lines are perpendicular, then the product of the two slopes should be -1.

First change 4x + 3y = 7 to Slope intercept form

  (4x - 4x) + 3y = 7 - 4x

   3y/3 = 7/3 - 4/3x

    Y = -4/3x + 7/3 ( -4/3 is the slope)

  Then find the slope of line n

     -4/3 x S = -1

      (-3/4 x -4/3) x S = -1 x -3/4

       S = 3/4

    Slope of line n is 3/4

      Next find the Y-intercept of line n

     Since line n contains (2,3) we can use 3 as the y-intercept of line n

          Hence, the equation of line n is Y = 3/4x + 3

7 0
1 year ago
The question is on the picture
Ghella [55]

Answer:6/10

Step-by-step explanation:

hope youdo well

7 0
3 years ago
David's chocolate bar is 37% cocoa. If the weight of the chocolate bar is 51 grams, how many grams of cocoa does it contain? Rou
OverLord2011 [107]

Answer:

18.9

Step-by-step explanation:

You need to find 37% of 51

In other words: 37% x 51

3 0
2 years ago
What is the perimeter P of △DEF to the nearest whole number?
inna [77]

Answer:

Can you please tell me what is the area of the given triangle?

3 0
3 years ago
Can someone help with the two triangle questions (will mark brainliest!!)
yaroslaw [1]

Answer: Number 1 is c=89 ft

Number 2 is b=3 cm

Step-by-step explanation: a²+b²=c²

For number 1, 39 ft is a and 80 ft is b so

39²+80²=c² so 39² is 39x39=1521 and 80² is 80x80=6400 so 6400+1521=7921

7921=c² and the square root of 7921 is 89 so c=89 ft

For number 2, a=1.6 cm and c=3.4 cm so 3.4²-1.6²=b²

3.4² so 3.4x3.4 which is 11.56

1.6² so 1.6x1.6 which is 2.56

11.56-2.56=c² and 11.56-2.56=9

Square root of 9 is 3 so b=3

So number 2 answer is b=3 cm

I hope this helps

4 0
2 years ago
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