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2 years ago

BRAINLIEST IF CORRECT In arithmetic, variables look like ___.

Mathematics

1 answer:

Wittaler [7]2 years ago

8 0

Answer:

they are usually letters, most commonly 'x'

Step-by-step explanation:

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Is this true or false 4/3 = 8/9

nirvana33 [79]

False. To make nine, you must multiply three by three. Four times three isn’t 8. An equivalent equation would be 4/3=12/9

7 0

2 years ago

The length of human pregnancies from conception to birth varies according to a distribution that is approximately Normal with me

andrey2020 [161]

Answer:

0.5466

Step-by-step explanation:

Given that the length of human pregnancies from conception to birth varies according to a distribution that is approximately Normal with mean 266 days and standard deviation 16 days.

Let X be the length of pregnancies

X is N(266,16)

To find out the probability that pregnancies last between 240 and 270 days (roughly between 8 months and 9 months)

P(240<x<270)

convert each into Z score as $z=\frac{x-266}{16}$

x=240 means Z = -1.625

x=270 means z=0.25

Required prob

= $P(-1.625$

5 0

2 years ago

BRAINLIEST + POINTS!

Viktor [21]

Answer:

1/6

Step-by-step explanation:

The probabitity of getting a heads is 1/2, and the probability of getting an even number is 1/3. So 1/2*1/3 is 1/6.

6 0

3 years ago

Read 2 more answers

A. Figure A

Citrus2011 [14]

Answer:

Figure b

Step-by-step explanation:

A translation is when a shape hoves to different coordinates but doesn't change size.

4 0

2 years ago

Read 2 more answers

Find the indicated limit, if it exists. limit of f of x as x approaches 9 where f of x equals x plus 9 when x is less than 9 and

SVEN [57.7K]

Answer:

B. 18

Step-by-step explanation:

For the function

$f(x)=\left\{\begin{array}{l}x+9,\ \ x$

we can find the value of the function for all x that are very close to 9 but are less than 9 and for all values of x that are very close to 9 but are greater than 9.

1. For $x$

$\lim \limits_{x\rightarrow 9}f(x)=\lim \limits_{x\rightarrow 9}(x+9)=9+9=18$

2. For $x\ge 9:$

$\lim \limits_{x\rightarrow 9}f(x)=\lim \limits_{x\rightarrow 9}(27-x)=27-9=18$

So, limit exists and is equal to 18.

8 0

2 years ago