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Tema [17]
3 years ago
14

Explain how you know if a system of equations has one solution, no solutions, or infinitely many solutions. Write your answers (

3) in Complete Sentences.
Mathematics
1 answer:
Nataliya [291]3 years ago
7 0

Answer:

Written Below.

Step-by-step explanation:

A system of linear equations has one solution when the graphs intersect at a point. A system of linear equations has no solution when the graphs are parallel. A system of linear equations has infinite solutions when the graphs are the exact same line.

(This uses graphing.)

Sidenote: I hope this helps! :)

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Tell whether the ratios form a proportion. 14:8 and 28:10
Dima020 [189]

Answer:

no

Step-by-step explanation:

14:8 = 14/8 = 7/4

28:10 = 28/10 = 14/5

Since the fractions are not equal, it is not a proportion.

Answer: no

5 0
2 years ago
Kimmy bought a 5kg mg can of peanuts for $4.50 what is the unit price
Lina20 [59]
<span>We know that the cost of 5 kg of peanuts is $4.50, then the unit price per kilogram is $4.50/5 kg = 0.90 $/kg And the unit price per gram is: $0.90 / kg * 1 kg/1000 = 0.0009 $/g or 0.09 cents/gram</span>
5 0
3 years ago
Please find the SURFACE AREA of this figure... Write the formula and plug in the values... Write your answer with units and box
ad-work [718]

Answer:

124(cm)^2

Step-by-step explanation:

total surface area of a cuboid=2(LB+BH+HL)

length=7cm

Breadth=5cm

Height=4cm

2{(2*7)+(5*4)+(4*7)}

2{14+20+28}

2*62

124(cm)^2

5 0
3 years ago
The cost of a car rental is thirty dollars a day plus fifteen cents a mile. If the total cost to rent the car was one hundred an
Elan Coil [88]

Answer:

Step-by-step explanation:

Alright, lets get started.

Suppose car was driven x miles in its 4 days trip.

Cost of a car rental is thirty dollar per day.

So, for 4 days, the car rental will be = 30*4=120 $

For 1 mile, it adds fifteen cents,

So, for x miles, the cost will be = 0.15 x $

As per question, total rent is 180 $

Total rent will be = 120 + 0.15 x = 180

Subtracting 120 in both sides

0.15 x = 180-120=60

x=\frac{60}{0.15}

x=400

It means car was driven 400 miles.   :   Answer

Hope it will help :)

4 0
3 years ago
In a basketball game the home team scores (2m + 39) points and the visiting team scores (3m + 40) points. Find the sum to repres
castortr0y [4]

Answer:

S = (5m+79)

Step-by-step explanation:

It is given that,

Scores won by home team = (2m + 39) points

Score won by visiting team = (3m + 40) points

We need to find the sum to represent the total points scored by the two teams m minutes past halftime.

It can be calculated by the sum of score by two teams. Let the sum is S.

S = (2m + 39) + (3m + 40)

S = 5m + 79

Hence, sum to represent the total points scored by the two teams m minutes past halftime is (5m+79)

6 0
3 years ago
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