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Trava [24]
3 years ago
13

Can someone solve a - 3 over 7 s = -8 and a + 24 = -15 STEP BY STEP PLEASE.

Mathematics
2 answers:
Ainat [17]3 years ago
8 0

Answer:

a=-39; s=0.75

Step-by-step explanation:

Solve the System of Equations by Substitution.

First, solve one of the equations for a variable. I'll do the 2nd one because it only has one variable.

a+24=-15 -------> a=-39

Now we know what a is just plug it back into the other equation and get s.

\frac{a-3}{7s} =-8

\frac{-39-3}{7s} =-8

\frac{-42}{7s} =-8

Switch the -8 and 7s

\frac{-42}{-8} =7s

Simplify the fraction

5.25=7s

Divide by 7 to isolate the s

0.75=s

 

TiliK225 [7]3 years ago
6 0

Answer:

2)a+24=-15

a=-15-24

a=-39

Step-by-step explanation:

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13

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(1, 4) is a solution to the system that includes y=3x + 1 and y = -x + 5.
SIZIF [17.4K]

Answer:

yes

Step-by-step explanation:

y=3x + 1

y = -x+5

Check if (1,4) solves the first equation

4 = 3(1)+1

4 = 3+1

4=4

This is true

Check the second equation

4 = -1+5

4=4

This is true

(1,4) is a solution to the system of equations

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2 years ago
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Cuanto costara una sala que se anuncia en $7500, con el 30% de descuento mas 16% de IVA
alexgriva [62]

Answer:

30 por ciento:2250

16 por ciento:1200

Step-by-step explanation:

4 0
3 years ago
Help please, Mathematics! If there's a formula include that too, please
mario62 [17]

Answer:

24 Combinations Total

Step-by-step explanation:

METHOD 1 (no advanced math skills needed)

i. Number the friends: a, b, c, and d

ii. List all possible combinations...

  1. a b c d
  2. a b d c
  3. a c b d
  4. a c d b
  5. a d b c
  6. <u>a d c b</u>
  7. b a c d
  8. b a d c
  9. b c a d
  10. b c d a
  11. b d a c
  12. <u>b d c a</u>
  13. c a b d
  14. c a d b
  15. c b a d
  16. c b d a
  17. c d a b
  18. <u>c d b a</u>
  19. d a b c
  20. d a c b
  21. d b a c
  22. d b c a
  23. d c a b
  24. <u>d c b a</u>

To speed up the process instead of sitting here and listing 24 combinations, after two sections you can see that with friend "a" sitting all the way at the left there are six combinations and the same goes for friend "b". You can then multiply 6 (number of combinations with that friend <em>first</em>) and 4 (friends) to get 24.

METHOD 2

n! means the total number for permutations calculation (1 x 2 x ... until you reach <u><em>n</em></u><em> </em>) = 24

6 0
3 years ago
Solve the inequality 6x − 8 &gt; 4x + 26
tino4ka555 [31]

Hi.

Answer:

\boxed{x>17}\checkmark

The answer should have positive sign but not negative.

Step-by-step explanation:

First, you add by 8 from both sides.

6x-8+8>4x+26+8

Then, simplify.

6x>4x+34

Next, you do is subtract by 4x from both sides.

6x-4x>4x+34-4x

Simplify.

2x>34

Therefore, you divide by 2 from both sides.

\frac{2x}{2}>\frac{34}{2}

Finally, you solve and simplify.

34/2=17

x=17\checkmark

X=17 is the correct answer.

Hope this helps you!

Have a nice day! :)

4 0
3 years ago
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