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3 years ago

7

Jose wants to be a vet, so he reads a lot. This month he read 14 books about dogs, 5 books about birds,6 about other animals and

7 biographies. Of the books he read, how many more were about animals than people?

1 answer:

Lana71 [14]3 years ago

7 0

18 more were about animals

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Scientists estimate that about 14 million species exist, and only about 50% of them have been studied and named. About how many

ra1l [238]

Answer:

About 7 million

Step-by-step explanation: because half of 14 is 7 then add the million to it

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Multiply 8 by 10, then subtract t from the result

faltersainse [42]

Answer:

80-t

Step-by-step explanation:

8(10)=80

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2 years ago

the length of the shadow of a pole on level ground increases by 90m when the angle of elevation of the sun changes from 58 degre

Mama L [17]

Step-by-step explanation:

(A) Let a triangle be formed with height of pole h, length of base b and angle of elevation 58°. (Due to lack of a figure).

Tan 58° = h / b = 1.6

(B) Let another triangle be formed with height of pole h, length of base (b + 90) and angle of elevation 36°. (Due to lack of a figure).

Tan 36° = h / (b + 90) = 0.72

(C) <u>Simplifying the two equations</u> :

1.6b = 0.72b + 64.8

b = 64.8 / 0.88 = 73.6 m

h (height of pole) = 1.6 * 73.6 = 117.76 m

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3 years ago

Find the equation of a line in point slope form with a slope of 3 going through the point (4,-6)?

icang [17]

Answer:

Equation of line: y=3x-18

Step-by-step explanation:

Point: (4,-6) and slope = 3

$y+6=3(x-4)$

y=3x-18

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3 years ago

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What are the coordinates of the point is 1/4 of the way from A (-6, -3) to B (6, 1)?

Amiraneli [1.4K]

Answer:

$(-3, -2)$

Step-by-step explanation:

To find the coordinates of the point is 1/4 of the way from A (-6, -3) to B (6, 1), we are going to be using the midpoint formula, which states that:

The midpoint is at $(\frac{x_{1} +x_{2} }{2}, \frac{y_{1} +y_{2} }{2})$ . Where:

$(x_{1}, x_{2}) = (-6, 6)$

$(y_{1}, y_{2}) = (-3, 1)$

Then, the midpoint is at:

$(\frac{-6 +6 }{2}, \frac{-3+1}{2})$ = $(0, -1)$

Now, to find the coordinates of the point that is 1/4 of the way, we are going to calculate the midpoint between the point 'A' and the midpoint previously caculated, as follows:

$(x_{1}, x_{2}) = (-6, 0)$

$(y_{1}, y_{2}) = (-3, -1)$

⇒ $(\frac{-6 +0}{2}, \frac{-3-1}{2})$ = $(-3, -2)$

Therefore, the point is 1/4 of the way from A to B is: $(-3, -2)$

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4 years ago