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devlian [24]
3 years ago
11

Can someone please help me

Mathematics
1 answer:
Nikolay [14]3 years ago
6 0

Answer:

B

Step-by-step explanation:

x²+2x=19 add 1 to both sides which gives you x²+2x+1=20

x²+2x+1 is the same as (x+1)²

Therefore (x+1)²=20

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Convert from Decimal Notation to Scientific Notation
umka21 [38]

Answer:

Hence, 0.026 can be expressed as $2.6 \times 10^{-2}$.

Step-by-step explanation:

- Given 0.026

- Use given, move the decimal point so that first factor is greater than or equal to 1 but less than 10 .

- Then count n and write in scientific notation.

Step 1 of 1

Consider 0.026

$$\Rightarrow 2.6$$

Decimal has moved 2 places to right.

The power will be negative as original no. is less than 1 .

$$\begin{aligned}&2.6 \times 10^{-2} \\&0.026=2.6 \times 10^{-2} .\end{aligned}$$

6 0
2 years ago
Help help help thanks
bija089 [108]
The answers are C and E,
According to the interior and exterior angle theorem, this should be correct:
<3+<4+<6=180
<3+<1=180
<4+<6=<1
so they are the interior opposite of <1


7 0
3 years ago
What is 5 over 8 in decimal form
Sonja [21]
0.625 which is approximately equal to 0.63 is 5/8 in decimal form.
4 0
3 years ago
HELP ME PLEASE, it’s confusing
kakasveta [241]

The number at the end of the equation shifts the graph up or down.

Changing the 1/2 to a -2 would shift the graph down which would change the y-intercept.

The answer is D.

6 0
3 years ago
Read 2 more answers
there are 320 seats in the airplane. passengers are taking 3/5 of the seats. There are 47 seats being used by flight attendants.
iogann1982 [59]

Answer: 124

Step-by-step explanation:

Multiply 320 by 3/5 (.6) and you will get 192. Then you subtract 320 by 47 and get 316. You subtract 192 from 316 and get 124.

8 0
3 years ago
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