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mario62 [17]
3 years ago
13

Evaluate the expression when n = 2.3. 5(n − 2) + 9 =

Mathematics
1 answer:
Nastasia [14]3 years ago
3 0

Answer:n=2.3.5(n-2)+9=n=44.6

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In 10 seconds Lauren counts 5 vehicles passing by her house at that rate how many vehicles would passing by in one hour​
Dafna11 [192]

Answer:

1,800 vehicles

Step-by-step explanation:

We need to find what fraction of an hour 10 seconds is, so we will divide 60 (minutes) by 1/6 (minutes). From solving this, we will get 360. That is how many 10 second chunks pass in an hour. We will multiply 360 by 5, and we get 1,800 vehicles!

4 0
3 years ago
Janell ran a race 11.4 seconds faster than Hilda. Hilda ran the race 7.2 seconds slower than Gracie. If the average (mean) of th
yulyashka [42]

Answer:

X= Gracie

X+7.2=Hilda

X+7.2-11.4=Janell

(X+X+X+7.2+7.2-11.4)÷3=62.6

(3x+3)÷3=62.6

3X+3=187.8 (I arrive at 187.8 because I multiple 62.6 by 3)

3X=187.8-3

3X=184.8

3X/3=184.8/3

X=61.6

Step-by-step explanation:

GRACIE X=61.6

Hilda X+7.2=61.6+7.2=68.8

Janell X+7.2-11.4=61.6+7.2-11.4= 57.4

6 0
4 years ago
. When 2 times a number is increased by 4,
Alinara [238K]

Answer: The number is 7

Step-by-step explanation:

Let x be the [number]

<u />

<u>Rephrase the expression</u>

2 times a number is increased by 4, it is the same as 25 decreased by the number

2x+4=25-x

<u>Calculate</u>

Given

2x+4=25-x

Add x on both sides

2x+4+x=25-x+x

3x+4=25

Subtract 4 on both sides

3x+4-4=25-4

3x=21

Divide 3 on both sides

3x/3=21/3

x=7

Hope this helps!! :)

Please let me know if you have any questions

4 0
3 years ago
I am not good at math at all so help please....I am trying pass...Thank-you in advanced to those who actually answer the questio
anastassius [24]

Answer:step 4 or 1

Step-by-step explanation:

4 0
3 years ago
What is the relationship between a conjecture, a theorem, two column proof
Afina-wow [57]
Conjecture
is an educated guess based on known information. Reached by using inductive reasoning
4 0
3 years ago
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