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Anton [14]
4 years ago
5

Round 2689.1356 to the nearest thousandths place

Mathematics
1 answer:
34kurt4 years ago
8 0
2689.136 so it's would be the third one you are correct
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2k - 2j when j=4&k=6 replace the variable with the given amount and solve the problem​
eimsori [14]

Answer:

4

Step-by-step explanation:

first, plug in 6 for k.<em> (</em><em>i</em><em>t</em><em> </em><em>doesn't</em><em> </em><em>matter</em><em> </em><em>which</em><em> </em><em>value</em><em> </em><em>you</em><em> </em><em>plug</em><em> </em><em>in</em><em> </em><em>first</em><em>;</em><em> </em><em>you can start with j </em><em>o</em><em>r</em><em> </em><em>k</em><em>,</em><em> </em><em>but i'm just </em><em>s</em><em>t</em><em>a</em><em>r</em><em>t</em><em>i</em><em>n</em><em>g</em><em> </em><em>with</em><em> </em><em>k</em><em> </em><em>since</em><em> </em><em>that</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>v</em><em>a</em><em>r</em><em>i</em><em>a</em><em>b</em><em>l</em><em>e</em><em> </em><em>that</em><em> </em><em>comes</em><em> </em><em>first</em><em> </em><em>in</em><em> </em><em>the</em><em> </em><em>expression</em><em>)</em>

2k - 2j => 2(6) - 2j

then plug in 4 for j.

2(6) - 2j => 2(6) - 2(4)

now your expression is 2(6) - 2(4). simplify by multiplying 2(6) and then -2(4) <em>(</em><em>again</em><em>,</em><em> </em><em>it</em><em> </em><em>doesn't</em><em> </em><em>matter</em><em> </em><em>which</em><em> </em><em>one</em><em> </em><em>you</em><em> </em><em>multiply</em><em> </em><em>first</em><em>,</em><em> </em><em>as</em><em> </em><em>long</em><em> </em><em>as</em><em> </em><em>you</em><em> </em><em>make</em><em> </em><em>sure</em><em> </em><em>that</em><em> </em><em>the</em><em> </em><em>minus</em><em> </em><em>sign</em><em> </em><em>between</em><em> </em><em>2</em><em>(</em><em>6</em><em>)</em><em> </em><em>and</em><em> </em><em>2</em><em>(</em><em>4</em><em>)</em><em> </em><em>gets</em><em> </em><em>attached</em><em> </em><em>to</em><em> </em><em>the</em><em> </em><em>2</em><em> </em><em>in</em><em> </em><em>2</em><em>(</em><em>4</em><em>)</em><em>.</em><em>)</em>

2(6) - 2(4) => 12 - 2(4)

12 - 2(4) => 12 - 8

subtract 8 from 12.

12 - 8 = 4

your answer is 4, therefore when j = 4 and k = 6, 2k - 2j = 4.

i hope this helps! have a nice day <3

8 0
3 years ago
What is the value of 5/z when z =2?
Setler79 [48]

Answer:

z = 2. \\ 5 \div z \\ 5 \div 2 \\ 2.5

<h2>2.5 is the correct answer .</h2>

Thank you ☺️☺️

3 0
3 years ago
Mr. Martin wants to make a batch of 12 chocolate chip cookies. The recipe he has makes 24 cookies and calls for 3 cups of flour.
raketka [301]

Answer:

1.5 cups of flour

Step-by-step explanation:

this is because if the recipe is ut in half, the ingredients must be as well. 3/2=1.5 simple.

5 0
3 years ago
On a map. 1/4 inch represents 16 actual miles. Two
Ray Of Light [21]

Answer:

E is the correct answer

6 0
4 years ago
120 A particular telephone number is used to receive both voice calls and fax messages. Suppose that 25% of the incoming calls i
seropon [69]

Answer:

a)0.5611

b)0.1828

c)0.6217

d)0.4389

e)6.25

Step-by-step explanation:

Let's define the following event :

X : ''Calls involving a fax message''

The random variable X can be modeled as a Binomial random variable.

N ~ Bi(n,p)

N ~ Bi(25,0.25)

Where n is the sample and p is the success probability

Let's also define nCr as the combinatorial number :

nCr=\frac{n!}{r!(n-r)!}

The probability function for X is :

P(X=k)=nCk.p^{k}.(1-p)^{n-k}

Where k is the number of success

a) P(X\leq 6)

P(X\leq 6)=P(X=0)+P(X=1)+P(X=2)+P(X=3)+P(X=4)+P(X=5)+P(X=6)

P(X\leq 6)=0.5611

b)P(X=6)=25C6.(0.25)^{6}.(1-0.25)^{19}=0.1828

c) P(X\geq 6)=1-P(X

d)P(X>6)=1-P(X\leq 6)=1-0.5611=0.4389

e) They are asking us about the expected value for random variable X

In a Binomial random variable :

E(X) = μ = n.p

E(X)=25(0.25)=6.25

6 0
3 years ago
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