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AlladinOne [14]
2 years ago
8

What is additive identity

Mathematics
2 answers:
Eddi Din [679]2 years ago
7 0

Answer:

An equation that if you add 0 it will equal itself



inn [45]2 years ago
6 0

Answer:

Anything plus 0 is itself

Step-by-step explanation:

For example, 4+0= 4

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2. The Welcher Adult Intelligence Test Scale is composed of a number of subtests. On one subtest, the raw scores have a mean of
IgorC [24]

Answer:

a) 37.31 b) 42.70 c) 0.57 d) 0.09

Step-by-step explaanation:

We are regarding a normal distribution with a mean of 35 and a standard deviation of 6, i.e., \mu = 35 and \sigma = 6. We know that the probability density function for a normal distribution with a mean of \mu and a standard deviation of \sigma is given by

f(x) = \frac{1}{\sqrt{2\pi}\sigma}\exp[-\frac{(x-\mu)^{2}}{2\sigma^{2}}]

in this case we have

f(x) = \frac{1}{\sqrt{2\pi}6}\exp[-\frac{(x-35)^{2}}{2(6^{2})}]

Let X be the random variable that represents a row score, we find the values we are seeking in the following way

a)  we are looking for a number x_{0} such that

P(X\leq x_{0}) = \int\limits^{x_{0}}_{-\infty} {f(x)} \, dx = 0.65, this number is x_{0}=37.31

you can find this answer using the R statistical programming languange and the instruction qnorm(0.65, mean = 35, sd = 6)

b) we are looking for a number  x_{1} such that

P(X\leq x_{1}) = \int\limits^{x_{1}}_{-\infty} {f(x)} \, dx = 0.9, this number is x_{1}=42.70

you can find this answer using the R statistical programming languange and the instruction qnorm(0.9, mean = 35, sd = 6)

c) we find this probability as

P(28\leq X\leq 38)=\int\limits^{38}_{28} {f(x)} \, dx = 0.57

you can find this answer using the R statistical programming languange and the instruction pnorm(38, mean = 35, sd = 6) -pnorm(28, mean = 35, sd = 6)

d) we find this probability as

P(41\leq X\leq 44)=\int\limits^{44}_{41} {f(x)} \, dx = 0.09

you can find this answer using the R statistical programming languange and the instruction pnorm(44, mean = 35, sd = 6) -pnorm(41, mean = 35, sd = 6)

6 0
3 years ago
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Which statement about rational numbers is true?
Ilya [14]

Answer:

im not to good at math but im pretty sure that its 1. all rational numbers ae fractions

Step-by-step explanation:

6 0
3 years ago
What are the next three terms in the sequence 2, -4, 8, -16, 32, ...? A. -128, 256, -512 B. 160, 320, 640 C. 160, -320, 640 D. -
miv72 [106K]
Common ratio is -2

next 3 terms :
32 * -2 = -64
-64 * -2 = 128
128 * -2 = -256

answer is D
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3 years ago
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ROMAN NUMERAL HI TOMMROW
Yuki888 [10]

Answer:

hey

Step-by-step explanation:

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2 years ago
How far will a jet travel in 2 hours and 30 minutes if its average speed is 450 miles per hour?
Nezavi [6.7K]
Distance = rate x time

D = 450 mph x 2.5 h
D = 1,125 miles
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3 years ago
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