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3 years ago

Use a number line to solve. 0.03 -0.92 a. -0.89 b. -0.95 C. 0.95 d. 0.89

Mathematics

1 answer:

AfilCa [17]3 years ago

5 0

Answer:

a. -0.89

Step-by-step explanation:

The easiest way to solve this is that 0.03 - 0.92 is also the same thing as -0.92 + 0.03, your answer should be -0.89 which you are adding up 0.03.

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Researchers are studying two populations of sea turtles. In population D, 30 percent of the turtles have a shell length greater

julia-pushkina [17]

Answer:

$p^D-p^E=0.192$

Step-by-step explanation:

We are given the following in the question:

Population D:

30% of the turtles have a shell length greater than 2 feet.

Sample size,

$n_D = 40$

Number of turtles that had shell length greater than 2 feet,

$x_D = 15$

Sample proportion:

$p^D=\dfrac{x_D}{n_D} =\dfrac{15}{40} = 0.375$

Population E:

20% of the turtles have a shell length greater than 2 feet.

Sample size,

$n_E = 60$

Number of turtles that had shell length greater than 2 feet,

$x_E = 11$

Sample proportion:

$p^E=\dfrac{x_E}{n_E} =\dfrac{11}{60} = 0.183$

We have to find the difference between the sample proportion.

Difference in sample proportion =

$=p^D-p^E\\=0.375-0.183\\=0.192$

8 0

3 years ago

If the graph of the quadratic parent function q(x) = x2 is translated 3 units to the right and 2 units down, which of the follow

ludmilkaskok [199]

Answer:

s(x) = (x - 3)^2 - 2

Step-by-step explanation:

q(x) = x^2 becomes r(x) = (x - 3)^2 after a 3-units-to-the-right translation.

This, in turn, becomes s(x) = (x - 3)^2 - 2, after a 2-units-down translation.

Next time, please share the answer choices. Thank you.

4 0

3 years ago

¿De quién nos habla el texto ?¿pudiste imaginar como ese personaje? ¿porque?

Feliz [49]

Answer:

lo siento, no entiendo esta pregunta, pero esta aplicación es para ayudar con cosas como las matemáticas.

Step-by-step explanation:

3 0

3 years ago

A farmer has both sheep and chickens on his farm. All the animals have the expected number of parts. When his animals are all

lora16 [44]

Answer:

13 sheep, 19 chicken

Step-by-step explanation:

You can start to solve this problem by assigning variables. First, let's assign the number of sheep there are as $x$ and the number of chickens there are as $y$ .

Because each sheep has 4 legs, the number of legs for each sheep would be $4x$ . Similarly, because each chicken has 2 legs, the number of legs for each chicken would be $2y$ . Each animal would have 1 head, so the number of heads would just be $x$ and $y$ . Because the number of legs in total are 90, $4x + 2y=90$ . Because the number of heads in total are 32, $x+y=32.$

There is now a system of equations with two unknown variables and two equations. There are many ways to solve this, but for me, the easiest would be elimination. First, I would double the second equation, $2x+2y=64$ . Then, I would subtract that from the first equation, eliminating $y$ . $2x=26$ . Solving for x gives 13. We can then plug that value into the second equation, making y be $32-13=19$ . This means that $x=13$ and $y=19$ , meaning that there are 13 sheep and 19 chicken.