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aliina [53]
3 years ago
13

3х + 2y = 2 y = 4 Substitution

Mathematics
2 answers:
Pavel [41]3 years ago
7 0

Answer:

x=-2

Step-by-step explanation:

hi! let's plug in 4 for y in the equation.

3x+2(4)=2

3x+8=2

3x=-6

x=-2

kirill [66]3 years ago
4 0

Answer:

x= -2

Step-by-step explanation:

you are going to substitute 4 in for y and then solve for x.

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A. P(5 &lt; X &lt; 9)<br>B. P(X &gt;7)<br>​
enot [183]

i think it is A. P(5<X<9)

8 0
3 years ago
Develop an estimate for each of the following situations.(at) The cost of a 500-mile automobile trip, if gaso-line is $4 per gal
Olin [163]

Answer:

The answer is below

Step-by-step explanation:

develop an estimate for each of the following situations.

(a) The cost of a 500- mile automobile trip, if gasoline is $4.00 per gallon, vehicle wear and tear is $0.65 per mile, and our vehicle gets 25 miles per gallon.

(b) The total number of hours in the average human life, if the average life is 75 years.

(c) The number of days it takes to travel around the equator using a hot air balloon, if the balloon averages 100 miles per day, the diameter of the earth is ~4,000 miles.

Solution:

a) The total trip = 500 mile

Cost of wear and tear = $0.65 per mile = $0.65 * 500 mile = $325

25 miles takes 1 gallon of gasoline at a cost of $4 per gallon

Cost of gasoline = $4 per gallon * 500 miles / 25 miles per gallon = $80

cost of a 500-mile automobile trip = Cost of wear and tear + Cost of gasoline = $325 + $80 = $405

b) Average life of human = 75 years.

1 year = 365 days, 1 day = 24 hours

Average life of human in hours = 75 years * 365 days * 24 hours =657000 hours

c) Diameter of earth = 4000 miles

Distance of equator = diameter of earth = 4000 miles

100 mile per day

number of days for the balloon to travel round the earth = 4000 miles / (100 mile per day) = 40 days

5 0
2 years ago
Which names are other ways to name ∠1?
vesna_86 [32]
∠1 is an angle formed by the two lines PF and YF at point F

We can also call this angle as ∠PFY because it indicates the point F in the middle where the angle is formed

We can call this angle as ∠YFP because it also indicates the point F in the middle where the angle is formed

we can also call this angle ∠F since F is the point where the angle is formed.

Correct answer: ∠PFY, ∠YFP, ∠F
4 0
3 years ago
What is the domain of the function represented by this graph? the graph of a quadratic function y = x^2 – 4 with a minimum value
Kobotan [32]

Answer:

A

Step-by-step explanation:

In this function, the domain, or the x value, has no limits. You can substitue any value of x into (x^2-4) and any result is valid.

I hope this helped!

4 0
3 years ago
Read 2 more answers
Which weighs more, a pound of cotton or a pound of bricks?
makvit [3.9K]
Is this a trick question? They're both a pound. 
7 0
3 years ago
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