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Natasha2012 [34]
2 years ago
15

Help and explain !!!!( Solve using the substitute method )

Mathematics
1 answer:
alex41 [277]2 years ago
5 0

Answer:

x=13

y= -9

(13, -9)

Step-by-step explanation:

If we are solving using the substitution method, we can take the first equation and set it to y so y=4-x.

Then, we can take that equation and plug it into the bottom one so

3x+4(4-x)=3

Simplify:

3x+16-4x=3

-x=-13

x=13

We can then plug 13 into any of the two given equations (I am just going to plug it into the top one)

So, 13+y=4 which y= -9

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A cheetah runs at a speed of 56 miles for every hour. If the distance traveled, in miles, is d and time, in hours, is t, which e
Butoxors [25]
D=56t because if t is hrs then u would multiply 56 and t to find the miles per hour
6 0
3 years ago
Brooke cooked a 4/1/3-pound lasagna in 1/1/3 hours. How many hours per pound did it take to cook the lasagna?
Hitman42 [59]

Answer:

4/13 hours

Step-by-step explanation:

Total pounds of lasagna = 4 1/3 pounds

Total time taken to cook = 1 1/3 hours

How many hours per pound did it take to cook the lasagna?

Hours per pound of lasagna = Total time taken to cook / Total pounds of lasagna

= 1 1/3 hours ÷ 4 1/3 pounds

= 4/3 ÷ 13/3

= 4/3 × 3/13

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It will take 4/13 hours to cook each pound of the lasagna

3 0
3 years ago
1. Which of the following is the standard form of y = (x – 3)(x – 7)?
Andrej [43]

9514 1404 393

Answer:

  b.  y = (x - 5)² - 4

Step-by-step explanation:

Here, we take "standard form" to mean "vertex form."

In the US, "standard form" would be ...

  y = x² -10x +21

Vertex form is ...

  y = (x -5)² -4 . . . . matches B

4 0
2 years ago
Use the functions and the scenario to solve the problem.
Naily [24]

Answer:

Leanne is correct. It is important that g(x) is subtracted from f(x).

Shiloh is incorrect. She subtracted f(x) from g(x), and subtraction isn't commutative.

*Just took the test, got the answer correct!! Hope this helps!

7 0
2 years ago
Based on given information for each of the following, which lines cannot be parallel? f m∠1=123°, m∠8=132°
Rudiy27

Answer:

do you have a picture?

Step-by-step explanation:

I can't go off of just that (not enough info)

5 0
3 years ago
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