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steposvetlana [31]
3 years ago
5

2. Solve each equation. Check your solutions. b. 5 + - 16

Mathematics
1 answer:
Ber [7]3 years ago
4 0

Answer:

Step-by-step explanation:

-11

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A family has two cars. The first car has a fuel efficuency of 15 miles per gallon of gas and the second has a fuel efficiency of
SVEN [57.7K]

Answer:

x= 35 gallons consumed by 1st car

and y= 40  gallons consumed by 2nd car

Step-by-step explanation:

Fuel efficiency of 1st car = 15 miles per gallon

Fuel efficiency of 2nd car = 35 miles per gallon

Let x= gallons consumed by 1st car

and y= gallons consumed by 2nd car

Total gallons consumed by both cars = 75

so, we can write

x + y = 75

Miles covered by both cars = 1925 miles

and we know, Fuel efficiency of 1st car = 15 miles per gallon

Fuel efficiency of 2nd car = 35 miles per gallon

we can write the equation as

15 x + 35 y = 1925

where x and y are gallons consumed by 1st and 2nd car.

We have two equation now,

x + y = 75                   (1)

15 x + 35 y = 1925     (2)

Multiplying eq(1) with 15 and subtracting eq (1) and 2

15 x + 15 y = 1125

15 x + 35 y = 1925

-       -            -

_______________

0 - 20 y = -800

y= -800 / -20

y = 40

Putting value of y in equation 1

x + y = 75

x + 40 = 75

x= 75 - 40

x = 35

x= 35 gallons consumed by 1st car

and y= 40  gallons consumed by 2nd car

4 0
3 years ago
Infinite Algebra 2
Irina-Kira [14]
The first problem, all you need to do is combine like terms then isolate the n:
4n-2n=4
~subtract 2n from 4n (2n)
2n=4
~then divide both sides of the equation by 2 to isolate the n
n=4

The second problem follows the same steps of combining like terms and isolating the variable. Here, you'll have to combine 2 like terms:
-12=2+5v+2v
~first combine the variables which is just 5v+2v which is 7v
-12=2+7v
~then subtract 2 from both sides to isolate the 7v
-14=7v
~then divide both sides by 7 to isolate the v and get your answer
-2=v

Hope that helped!
4 0
3 years ago
Write a word sentence for the equation 2.3m = 0.46
emmasim [6.3K]
Two and three tenths meters equals zero and fourty-six hundreths
5 0
3 years ago
Read 2 more answers
What is 3940 times 4869
r-ruslan [8.4K]

Answer:


Step-by-step explanation:

4869 x 3940 = 19183860

4 0
3 years ago
Read 2 more answers
WhiThree-fifths of the members of the Spanish club are girls. There are a total of 30 girls in the Spanish club.
vesna_86 [32]

Answer:

The total members in the Spanish Club  = 50

Step-by-step explanation:

Let the total members in the Spanish Club = x

Now, number of girls in the club = 30

Three-fifths of the members are girls.

⇒ (\frac{3}{5} )  of total members x  =  30

or, (\frac{3}{5})  \times  x =  30\\

Now, solving for x, we get:

x = 30 \times\frac{5}{3}   = 50

or, x   = 50

Hence,the total members in the Spanish Club  = 50

7 0
2 years ago
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