Of all the species in the world 4, out of every 5 are insects. What percentage of species are insects

Answers

Answer 1

Answer: If 4/5 are insects, 8/10, or .8, of the species are insects. To find a percentage, multiply by 100 to find that 80% of the species are insects.

Answer 2

Answer:

Answer:

80%

Step-by-step explanation:

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A line that passes through the point (–1, 3) has a slope of 2. Find another point on the line.a. (–3, 2)
b. (1, 4)
c. (1, 5)
d. (0, 5)

Answers

Using the slope-intercept form of a line, the equation can be generated
y = mx + b

m = 2
and we can solve for b by substituting the given coordinates where the line passes through
3 = 2(-1) + b
b = 5

So, the equation of the line is
y = 2x + 5

Trying the options using the equation, the answer is
d. (0,5)

In the figure, PR = 15x – 11 and PQ = 3x + 6. Find QR in terms of x.

Answers

Answer: 12x - 17

Step-by-step explanation:

To find QR subtract PQ from PR

15x-11 -(3x+6) ---> 15x - 11 - 3x -6 = 12x -17

25% of 68000 is how much

Answers

$1 \% =(1)/(100) \n \n25 \% =(25)/(100)=0,25\n \n25 \% \cdot 68000 = 0,25 \cdot 68000 =17 000$

$25\%\ of\ 68000= (25)/(100) \cdot 68,000= 25\cdot680=17,000$

What is the value of 36x - 8y to the power of 2, when x=3 and y= -6

Answers

$36x-8y^2 \hbox{ when } x=3 \hbox{ and } y=-6 \n \n36 * 3 -8 * (-6)^2=3 * 36 - 8 * 36=(3-8) * 36= -5 * 36=\n =\boxed{-180}$

$(36x-8y)^(2)$

$[36(3)-8(-6)]^2$

$(108+48)^2$

$156 ^(2)$

$=24336$

A baseball is thrown into the air from a height of 5 feet. The ball reaches a maximum height of 43.5 feet and spends a total of 3.2 seconds in the air. Write the equation that models the height of the baseball? Assume that acceleration due to gravity is –16 ft/s2

Answers

Answer:

h(t) = -16t2 + 49.64t + 5 (which is letter C )

Step-by-step explanation:

Got it correct

h = 5 + ut - 16t^2
When the balls falls back to the ground, h = 0
0 = 5 + 3.2u - 16(3.2)^2
0 = 5 + 3.2u - 163.84
0 = 3.2u - 158.84
3.2u = 158.84
u = 158.84/3.2 = 49.6 ft/s

Required equation is
h = 5 + 49.6t - 16t^2

What's this answer???

Answers

Youn could test all of the options by putting 8 and 3 in for a and b.

A. a - b = 5
8 - 3 = 5
5 = 5

B. a + b = 5
8 + 3 = 5
11 ≠ 5

C. a - b = 8
8 - 3 = 8
5 ≠ 8

D. a + b = 8
8 + 3 = 8
11 ≠ 8

As you can see, the only one that works is A. a - b = 5.

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