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grin007 [14]
3 years ago
12

It helps classify animals according to their needs.

Mathematics
2 answers:
MakcuM [25]3 years ago
7 0
1st: -2*2^(1-1) = -2*1 = -2

4th: -2*2^(4-1) = -2 *8 = -16

8th = -2*2^(8-1) = -2*128 = -256

Last choice is correct
bagirrra123 [75]3 years ago
6 0
A_n=-2 \cdot 2^{n-1} \\  \\ A_1=-2\cdot 1=-2\\A_4=-2\cdot 2^{4-1}=-2 \cdot 2^3=-2 \cdot8=-16 \\ A_8=-2\cdot 2^{8-1}=-2 \cdot 2^7=-2 \cdot128=-256

The answer is D. -2, -16, -256
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X^2-12x+9=y standard to vertex form
stich3 [128]

Answer:

(-6, -45)

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Which of the following is another way to express the equation 16 = -9 + z?16 = z - 916 = z + 916 = - z - 916 = - z + 9
vivado [14]

Given the following equation:

16=-9+z

The given equation can be written using the commutative property

Where: a + b = b + a

So, the given equation can be written as follows:

16=z-9

So, the answer will be: 16 = z - 9

4 0
1 year ago
<img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B%20%7B4%20a%7D%5E%7B2%7D%20%2B%20%20%7B12a%7D%5E%7B2%7D%20%7D%20" id="TexFormula1
PolarNik [594]

Answer:

The answer is 4a

Step-by-step explanation:

1) Simplify 4a² + 12a² to 16a².

\sqrt{ {16a}^{2} }

2) Use this rule:

\sqrt{ab}  =  \sqrt{a}  \sqrt{b}

\sqrt{16}  \sqrt{ {a}^{2} }

3) Since 4 × 4 is 16, the square root of 16 is 4.

4 \sqrt{ {a}^{2} }

4) Simplify.

4a

<u>Therefor</u><u>,</u><u> </u><u>the</u><u> </u><u>answer</u><u> </u><u>is</u><u> </u><u>4a</u><u>.</u>

8 0
3 years ago
Please help soon!! will award brainliest
levacccp [35]

three shapes. three areas to find. three areas to add together to find the whole area. gotcha.

Step-by-step explanation:

  • smaller rectangle
  • larger rectangle
  • right triangle

<h2> smaller rectangle: </h2>

length is 7 cm and width is 4 cm, so the area is <u>28 square cm</u>

<h2></h2><h2>larger rectangle:</h2>

width is 4 cm and length is 10 cm, so the area is <u>40 square cm</u>

Because the weird shape's bottom length was 13 cm. There are 3 cm and 7 cm on the top length(s) of the weird shape, next to each other. Looking at the dash lines, when adding 3 cm and 7 cm together, the larger rectangle's length is 10 cm.

<h2>right triangle: </h2>

base is 3 cm and height is 8 cm, so the area is (3x8)/2 = 24/2 = <u>12 square cm</u>

With knowledge from figuring out the larger rectangle's length being 10 cm and the weird shape's bottom length being 13 cm, we know the right triangle's base is 3 cm. (13 cm - 10 cm = 3 cm for the base of the right triangle).

Due to adding 4 cm and 4 cm of weird shape's width, which is also a right triangle's height.

<h2>weird shape's area from adding three shapes' areas: </h2>

28 + 40 + 12

= 80 square cm (ANSWER)

<h2 />
6 0
3 years ago
Please help me, thank you!!!
vaieri [72.5K]

We need to find the probability that a selected animal will be an threatened given they are a bird: P(T/B). So,

P(T/B)= \frac{P(T\cap B)}{P(B)}

Where, Probability of threatened animal that are birds:

P(T \cap B) = \frac{15}{475}

and probability of bird=\frac{90}{475}

Therefore, P(T/B)= \frac{P(T\cap B)}{P(B)}

= \frac{\frac{15}{475}}{\frac{90}{475}}

=\frac{15}{90}

=0.1667

=16.67%

6 0
3 years ago
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