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vampirchik [111]
3 years ago
15

Translate the sentence into an equation. The sum of 4 times a number and 7 equals 3

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
4 0

Answer:

4x + 7 = 3

Step-by-step explanation:

let the number be x

4 times x = 4x

sum of 4x and 7 = 4x + 7

Sum of 4x  + 7 is 3 becomes;

4x + 7 = 3

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I need help please! ​
Sophie [7]

Answer/Step-by-step explanation:

Area of trapezium = ½*(AD + BC)*AB

Area = 42 cm²

AD = (x + 8) cm

BC = (x + 5) cm

AB = x cm

Plug in the values into the equation

42 = ½((x + 8) + (x + 5))*x

42 = ½((x + 8 + x + 5)*x

42 = ½(2x + 13)*x

Multiply both sides by 2

42*2 = (2x + 13)*x

84 = 2x² + 13x

2x² + 13x = 84

Subtract both sides by 84

2x² + 13x - 84 = 0

4 0
3 years ago
Classify the triangle with side lengths of 16, 13, and 12 as acute, right, or obtuse
kolezko [41]

Answer:

16+13+12=41

Step-by-step explanation:

it is acute

6 0
3 years ago
Which are greater 56.07 or 56.7.?
lorasvet [3.4K]
56.7 because it is on the hundredths place.
3 0
4 years ago
Situation: A 25 gram sample of a substance thats used for to sterilize surgircal instruments has a k-value of 0.1205. N=Noe^-kt
Naya [18.7K]
Going by the formula, Half-Life = ln(.5) / k
Half-Life = .693147 / .1205
Half-Life = 5.75 days and rounded to nearest tenth,
Half-Life = 5.8 days

5 0
3 years ago
What is the linear function? Find the output when the input is n. please help.
melomori [17]

Answer:

y = -x + 6

Example:

-1 +6=5

7 0
3 years ago
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