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cricket20 [7]
3 years ago
8

-4+(7-2k)<-19 please I need help

Mathematics
1 answer:
Mice21 [21]3 years ago
6 0

Answer:

k > 11

Step-by-step explanation:

-4+(7-2k)<-19

Add -4 and 7 and you get 3 which makes the equation

3-2k<-19

Change the less than sign to an equal sign so you can solve for k

3-2k = -19

Subtract 3 from both sides and you get

-2k = -22

divide both sides by -2 and you get

k = ll

But bkuz you want it to be greater than -19 you have to change the equals sign to a greater than sign

k > 11

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The decimal i am thinking of is 3 hundredths less than 3 tenths. What is my decimal
Alinara [238K]

3 hundredths - 3/100

3 tenths - 3/10

3/10 is the same as 30/100

3/100 less than 30/100 is 30/100-3/100 = 27/100

Answer: 27/100

6 0
3 years ago
Which expression represents the number of possible combinations of n items taken rat a time
Likurg_2 [28]

Answer:

nCr =  n! / (r!)(n-r!).

Step-by-step explanation:

That would be nCr =  n! / (r!)(n-r!).

A quick way of working these out is as follows:

Take 7C4:

this  is  7*6*5*4/4*3*2*1   Cancelling out the 4 and 3*2:

=  7*5

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= 15C3

= 15*14*13 / 3*2*1

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8 0
3 years ago
a set of angles has a ratio of 5:2 if the larger angle measures 105 degrees then what is the measure of the smaller angle?
Sphinxa [80]
42 degrees. Divide 105 by 5 and get 21 and then multiply it by 2.
7 0
4 years ago
Read 2 more answers
A perfume company claims that the mean weight of ther new perfume is at least 8.9 fluid oz. Express the null hypothesis and the
zlopas [31]

Answer:

H0: mu = 8.9 fl oz.\\\\

Ha: mu ≠8.9 fluid oz

Step-by-step explanation:

Given that A perfume company claims that the mean weight of ther new perfume is at least 8.9 fluid oz

For testing this claim, in Statistics we perform a certain measures called hypothesis testing.

For this first step is to create null and alternate hypothesis.

Normally null hypothesis would have some statistic = something

Here we want to test the mean weight of perfume

Hence null hypothesis would be

H0: mu = 8.9 fl oz.

Alternate hypothesis would be opposite of this claim

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Ha: mu ≠8.9 fluid oz

Hence answer is

H0: mu = 8.9 fl oz.\\\\

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6 0
3 years ago
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Discount=$ 4

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solution given:

Marked price: $18.99

selling price: $14.99

Now

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:$4

Now

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=\frac {4}{18.99}*100%

=21.06%

5 0
3 years ago
Read 2 more answers
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