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schepotkina [342]

3 years ago

14

Explain why some systems of equations have no solutions, why some systems have one solution, and why some systems have infinite

1 answer:

dusya [7]3 years ago

8 0

Answer:Some equations may not have solutions and some may have one or more than one is because of the variables or how they are written

Step-by-step explanation:not 100% sure this is the correct answer,I tried my best.

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If 7/12x-1/3=1/2+3/8 what is the value of x

telo118 [61]

$\dfrac{7}{12}x-\dfrac{1}{3}=\dfrac{1}{2}+\dfrac{3}{8}\\\\LCM(12,\ 3,\ 2,\ 8)=24\\\\\text{multiply both sides by 24}\\\\24\cdot\dfrac{7}{12}x-12\cdot\dfrac{1}{3}=12\cdot\dfrac{1}{2}+24\cdot\dfrac{3}{8}\\\\2\cdot7x-8=12+3\cdot3\\\\14x-8=12+9\\\\14x-8=21\qquad|\text{add 8 to both sides}\\\\14x=29\qquad|\text{divide both sides by 14}\\\\x=\dfrac{29}{14}$

3 0

3 years ago

Problem 2-11 (Algorithmic) Let A be an event that a person's primary method of transportation to and from work is an automobile

dangina [55]

The events are mutually exclusive, because your primary method can't be both a driving a car or taking a bus.

Since they are exclusive, the probability of the "or" clause is the sum of the probabilities:

$P(A\lor B)=P(A)+P(B)=0.48+0.32=0.8$

Since a person primarily takes a bus with probability 0.32, the opposite happens with probability

$1-P(B) = 1-0.32=0.68$

7 0

4 years ago

Round 939,515 to the nearest ten

Radda [10]

Answer:

939,520 would be the answer. You're rounding the 15 part up to the next ten which would be 20, making the answer 939,520.

6 0

4 years ago

Read 2 more answers

Martin uses 5/8 of a gallon of paint to cover 4/5 of a wall. What is the unit rate at which Martin paints in walls per gallon?

Papessa [141]

Answer:

The unit rate is 32/25 Walls per gallons.

Step-by-step explanation:

Gallons of paint used by Martin = 5/8 gallons

Portion of wall Martin wants to paint in pints = 4/5 wall.

Rate at which Martin paints the wall: Rate = Portion of wall covered/Paints Used.

Rate = 4/5 Gallons/5/8 Gallons = 32/25 Wall Gallons.

8 0

3 years ago

Simplify.<br><br><br><br>1/2−3(1/2+1)2

Montano1993 [528]

The answer is -17/2. B

8 0

3 years ago