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2 years ago

Write the number of the word problem that match the system of equations illustrated:

Mathematics

1 answer:

uranmaximum [27]2 years ago

4 0

5b + 9s = 28.75

10b + 10s = 47.5

Multiply all terms in equation #1 by 2.

10b + 18s = 57.5

Subtract both equations from each-other.

8s = 10

Divide both sides by 8.

s = 1.25

The cost of a soda is 1.25, and because we know this, we can plug it into either equation to solve for the cost of b, a burger.

5b + 9(1.25) = 28.75

5b + 11.25 = 28.75

Subtract 11.25 from both sides.

5b = 17.5

Divide both sides by 5.

b = 3.5

<h3>The price of a soda is $1.25.</h3><h3>The price of a burger is $3.5.</h3>

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0.4(2x-9)-0.6(4x+5)=

masha68 [24]

Answer:

From what I can comprehend I believe the answer is <em>3.2x + -4</em>

Step-by-step explanation:

0.4(2x-9) = 0.8x - 9

0.8x - 9 - 0.6(4x+5)=

0.8x - 9 + 2.4x+5

0.8+2.4 = 3.2x

-9 + 5 = -4

3.2x + -4

5 0

2 years ago

The school that Mary goes to is selling tickets to a spring musical. On the first day of ticket sales

andrezito [222]

Answer:

The cost of one adult ticket is $13, and the price of one student ticket is $4.

Step-by-step explanation:

This question can be solved using a system of equations.

I am going to say that:

x is the cost of an adult ticket

y is the cost of a student ticket.

6 adult tickets and 1 student ticket for a total of $82

This means that

$6x + y = 82$

$y = 82 - 6x$

The school took in $51 on the second day by selling 3 adult tickets and 3 student tickets.

This means that

$3x + 3y = 51$

Simplifying by 3

$x + y = 17$

Since $y = 82 - 6x$

$x + 82 - 6x = 17$

$-5x = -65$

$5x = 65$

$x = \frac{65}{5} = 13$

$y = 82 - 6x = 82 - 6*13 = 82-78 = 4$

The cost of one adult ticket is $13, and the price of one student ticket is $4.

4 0

2 years ago

Round your answer to the nearest hundredth.

Dmitry_Shevchenko [17]

tan 35 = BC / 2

0.700 = bc/2

bc = 1.4

3 0

1 year ago

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Please help this is the last question and determines wether I pass or not

givi [52]

Hopefully I’m not too late, but here’s how I solved it. Basically, replace F with 68. Subtract 32 from both sides so your equation becomes 9/5C=36. Divide both sides by 9/5 so C is left but itself (C=36/1.8). The answer should come out to 20. If you want to check my answer, plug 20 into the equation. Multiply 20x9/5 which equals 36. Add 36 and 32 together to get 68. Hope this helps

3 0

2 years ago

Kelly subtracted 2.3 from 20 and got 17.7. explain why this answer is reasonable

netineya [11]

If 20-2.3=17.7, then if you add 17.7 to 2.3. it equals 20 which is called the communicative property because whatever you add or subtract, the answer is the same
17.7+2.3=2.3+17.7

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2 years ago

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