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Sedaia [141]
3 years ago
14

HELP ME I"M VERYYYY CONFUISED

Mathematics
1 answer:
nalin [4]3 years ago
6 0

Answer:

If it's zero it's neither of them because zero is not a number to multiply with because it will always be zero when multiplying with zero

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Could someone help me with this please?
Inessa05 [86]
Using the formula a+b/2*H you get 93.07
8 0
3 years ago
Read 2 more answers
The temperature of a city changed by -24 degrees celsius over a 6-week period. The temperature changes by the same amount each w
Anton [14]
That amount, which I assume you're asking about, is a 4 degree drop in temperature each week.
3 0
3 years ago
What is the value of b that makes the lines, given by 3x-y=4 and 2y+4bx=1, perpendicular?
USPshnik [31]

b = 1/6

Explanation:

3x-y=4 ...1st equation

Rewriting in slope- intercept form:

y = 3x - 4

2y+4bx=1

Rewriting in slope- intercept form:

2y = -4bx + 1

y = -4bx/2 + 1/2

Equation of line: y = mx + c

where m = slope, c = intercept

For a line to be perpendicular to another, the slope of one will be the negative reciprocal of the slope of another.

Slope of the 1st equation = 3

m = 3

reciprocal of 3 = 1/3

negative reciprocal of 3 = -1/3

Slope of the 2nd equation = -4b/2

we equate both slope:

negative reciprocal of 3 = -4b/2

-1/3 = -4b/2

cross multiply:

-1(2) = 3(-4b)

-2 = -12b

Divide both sides by -12:

-2/-12 = -12b/-12

b = 1/6

Hence, the value of b that makes the lines perpendicular is 1/6

6 0
1 year ago
Formula for the perimeter of a rectangle P=2a + 2b, for b
bagirrra123 [75]
My answer is: P/2a = 2b
if that's wrong then im sorry I got it by dividing 2a on each side so 2b would be alone
4 0
4 years ago
Read 2 more answers
the speed of a stream is 4mph. If a boat travels 92 miles downstream in the same time that it takes to travel 46 miles upstream,
Elanso [62]

Answer:

12 miles per hour

Step-by-step explanation:

Let speed of boat in still water be "x"

and speed of current be "c"

So, downstream rate would be "x + c"

And, upstream rate would be "x - c"

Now, given c = 4

We can use the distance formula, D = RT, where

D is distance, R is rate, and T is time

to solve this.

Downstream:

D = RT

92 = (x+4)(t)

Upstream:

D = RT

46 = (x-4)(t)

Both the times are same, we can equate both the times. Lets simplify first:

t = 92/(x+4)

and

t = 46/(x-4)

Equate:

\frac{92}{x+4}=\frac{46}{x-4}

Now, cross multiply and solve for x to get our answer:

\frac{92}{x+4}=\frac{46}{x-4}\\92(x-4)=46(x+4)\\92x-368=46x+184\\46x=552\\x=12

Speed of Boat (in still water) = 12 mph

6 0
3 years ago
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