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mestny [16]
3 years ago
13

Solve for a 5 + 7a = 19

Mathematics
2 answers:
Bess [88]3 years ago
8 0
A = 2 all you gotta do is 7 x 2 which is 14 and add 5 to it which equals 19
Artyom0805 [142]3 years ago
6 0
A=2.. 7a=19-5 this implies that 7a=14 then find for a which is 2
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You buy a total of 25 burgers and tacos for $67.50. The burgers cost $3.50 each and the tacos cost $2.25 each. Find the number o
Ahat [919]

Answer: you bought 9 burgers and 16 tacos

Step-by-step explanation:

Let x represent the number of burgers that you bought.

Let y represent the number of tacos that you bought.

You buy a total of 25 burgers and tacos. It means that

x + y = 25

The burgers cost $3.50 each and the tacos cost $2.25 each. The total cost of the burgers and tacos that you bought is $67.50. It means that

3.5x + 2.25y = 67.5- - - - - - - - - - - - 1

Substituting x = 25 - y into 1, it becomes

3.5(25 - y) + 2.25y = 67.5

87.5 - 3.5y + 2.25y = 67.5

- 3.5y + 2.25y = 67.5 - 87.5

- 1.25y = - 20

y = - 20/ - 1.25

y = 16

x = 25 - y = 25 - 16

x = 9

5 0
3 years ago
Find 3 3/4 divided by 4/5
steposvetlana [31]

Answer:

75/16 or 4 11/16

Step-by-step explanation:

The first answer is an improper fraction, and the second answer is a mixed number...

4 0
3 years ago
Read 2 more answers
Question 10
RSB [31]

Answer:

(x-4)(3x+2)

Step-by-step explanation:

8 0
3 years ago
What is 60% of 50?<br><br> coins
grandymaker [24]

Answer:

30

Step-by-step explanation:

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7 0
2 years ago
-1 3/5 ÷-2/3 as a mixed number​
SCORPION-xisa [38]

\text{Hey there!}

-1\frac{3}{5}\div\frac{2}{3}

-1\frac{3}{5}=-\frac{8}{5}

\text{Problem becomes:}-\frac{8}{2}\div\frac{2}{3}

\text{Solve that, and you will get:}\frac{-4}{5}\div{\frac{3}{1}}

-4\times1=-4

5\times3=15

\rightarrow =\frac{-4}{15}

\boxed{\boxed{\boxed{\bf{Answer:\frac{-4}{15}}}}}}\checkmark

\text{Good luck on your assignment and enjoy your day!}

~\frak{LoveYourselfFirst:)}

6 0
3 years ago
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