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3 years ago

Simplify the expression. x(y+z)-2(xy)

Mathematics

2 answers:

Tomtit [17]3 years ago

8 0

X(y+z)-2(xy) = -xy+xz

Vadim26 [7]3 years ago

3 0

X(y+z)-2(xy) = xy + xz - 2xy = -xy + xz
I hope it helps you!!

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What is the range of the relation[(-5,0),(-4,-3),(-3,4),(-1,0),(-4,-1)]

vesna_86 [32]

The range is the set of values that the relation takes for the domain for which it is defined.

Is the set of values of the dependent variable.

In this case, we have the relation [(-5,0),(-4,-3),(-3,4),(-1,0),(-4,-1)].

The dependant variable takes the values: 0, -3, 4, 0 and -1. Some values are repeated.

We put the repeated values only once and sort to write the range.

Then, the range is R = {-3, -1, 0, 4}.

Answer: Range = {-3, -1, 0, 4}

4 0

1 year ago

Construct a 95% confidence interval to estimate the population mean using the data below. x overbarequals37 sigmaequals10 nequa

kap26 [50]

Answer:

With 95% confidence when n equals 44, the population mean is between a lower limit of 33.96 and an upper limit of 40.04

Step-by-step explanation:

Confidence Interval = mean + or - Error margin (E)

mean = 37

sd = 10

n = 44

degree of freedom = n - 1 = 44 - 1 = 43

t-value corresponding to 43 degrees of freedom and 95% confidence level is 2.0165

E = t × sd/√n = 2.0165×10/√44 = 3.04

Lower limit = mean - E = 37 - 3.04 = 33.96

Upper limit = mean + E = 37 + 3.04 = 40.04

95% confidence interval is between 33.96 and 40.04

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3 years ago

Multiply and simplify. 6xy^3z⋅3x^2yx^2

klio [65]

It's letter c

multiply the coefficient then just add the degrees of each letter

4 0

3 years ago

How do I do step by step

kiruha [24]

Answer:

1.1

Step-by-step explanation:

Write out a long division problem! Since you can't have a decimal in the divisor, multiply both numbers by 10. This will leave you with 39.6÷36. Now all you have to do is follow the steps and end up with an answer of 1.1

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2 years ago

Geometry Question: BK bisects angle ABC and M angle ABK=28.3 degrees. Find M angle KBC and M angle ABC.

Nookie1986 [14]

Answer:

$ABK = 28.3$

Step-by-step explanation:

Given

$ABK = 28.3$

Required

Determine KBC

Since BK is a bisector of ABC at B,

this implies that:

$ABK = KBC$

Substitute 28.3 for ABK

$28.3 = ABK$

Reorder

$ABK = 28.3$

7 0

3 years ago

Read 2 more answers