3 years ago

Why is m step so hard??

Mathematics

1 answer:

frosja888 [35]3 years ago

7 0

Explain more , so i can help

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Given the equation 4x + 7 = 3(2x − 5), solve for the variable. Explain each step and justify your process.

MariettaO [177]

Part 1: $4x + 7 = 3(2x - 5)$

$4x+7=6x-15$

$7=6x-15-4x

$

$7=2x-15$

$7+15=2x$

$22=2x$

$22=2x / 2$

$x=11$

Part 2: Sam is not correct because he messed up the second step. He added 2x on both sides to get 7x, instead he should have subtracted.

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3 years ago

how many ounces of a 24% alcohol solution and a 29% alcohol solution must be combined to obtain 90 ounces of a 25% solution

atroni [7]

Answer:

agregar 14 o

Step-by-step explanation:

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3 years ago

If a triangle with angle measures 40,30.and 120 centimeters possible?

vagabundo [1.1K]

No, the longest side must be less than the sum of the smaller sides or else they won't connect (try it yourself with straw or something)

40+30>120
70>120
false, therfor they canonot be a triangle

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3 years ago

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Question 1 of

AnnyKZ [126]

Answer:

5L/2 < 100

Step-by-step explanation:

Let's get started!

Let :

⇒ Length = L

⇒ Width = L/4

It mentions the perimeter must be less than 100 inches.

Perimeter Formula :

Perimeter (Rectangle) = 2(Length + Width)

Then, the inequality formed will be :

⇒ 2 (L + L/4) < 100

⇒ 2 (5L/4) < 100

⇒ 10L/4 < 100

⇒ 5L/2 < 100

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2 years ago

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What percent of 54 is 28? F) 192% G) 19% H) 0.52%

Vanyuwa [196]

Answer:

Step-by-step explanation:

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