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KATRIN_1 [288]
2 years ago
11

Someone Help me solve these by substitution please !

Mathematics
1 answer:
PSYCHO15rus [73]2 years ago
8 0
I think the answer is:

X=3

Y=-2
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Anything that ends in 5 can be divided by
Mandarinka [93]

Answer:

1, itself, and 5

Step-by-step explanation:

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2 years ago
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Andy bought 4 hamburgers snd 2 milkshakes for $13.50. Danny bought 3 hamburgers and 1 milkshake for $9.25. What cost of a hambur
Molodets [167]

A hamburger costs $2.5 and a milkshake costs $1.75

Step-by-step explanation:

  • Step 1: Form equations from the given details. Let cost of 1 hamburger be H and cost of 1 milkshake be M.

   4H + 2M = 13.50 ------ (1)

&  3H + 1M =   9.25 ------ (2)

  • Step 2: Multiply eq(2) with 2 to make coefficients of M equal.

   6H + 2M = 18.50 ------- (3)

  • Step 3: Subtract eq(3) from eq(1)

⇒ - 2H = - 5

⇒ H = $2.5

  • Step 4: Substitute value of H in eq(2) to find M.

⇒ 3 × 2.5 + M = 9.25

⇒ 7.5 + M = 9.25

⇒ M = $1.75

4 0
2 years ago
Jean’s salary last month was $3200. Because of worse beneficial result of her company, this month her salary decreased to $2720.
vesna_86 [32]

Answer:

15%.

Step-by-step explanation:

3200 x .15 = 480

3200 - 480 = 2720

Feel free to let me know if you need more help! :)

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2 years ago
What would the answer be ?
Mashutka [201]

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Step-by-step explanation:

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