Please help me with all ASAP I’ll mark brainly

Mathematics

1 answer:

timurjin [86]2 years ago

8 0

Answer:

5) Ms. Brea is incorrect because -31-54 does not equal 23. The answer to the equation would be a negative.

Yes, Ms. Kretschman is correct because a negative times a negative equals a positive.

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5) 85% of 366.8 is what? A) 431.5 B) 311.8 C) 128.1 D) 10146

Nataly_w [17]

Answer: The answer is B

B. 311.78

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2 years ago

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Sophie drew a scale drawing of a house and its lot. The back patio is 3 centimeters wide in the drawing. The actual patio is 18

wel

Answer: 45?

Step-by-step explanation: Sorry If I'm wrong, I haven't learned this yet but I tried my best.

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2 years ago

(7)/(3) of it is 5 (5)/(6)

slava [35]

let's firstly convert the mixed fraction to improper fraction and then take it from there, keeping in mind that the whole is "x".

$\stackrel{mixed}{5\frac{5}{6}}\implies \cfrac{5\cdot 6+5}{6}\implies \stackrel{improper}{\cfrac{35}{6}} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{7}{3}x~~ = ~~5\frac{5}{6}\implies \cfrac{7}{3}x~~ = ~~\cfrac{35}{6}\implies 42x=105\implies x=\cfrac{105}{42} \\\\\\ x=\cfrac{21\cdot 5}{21\cdot 2}\implies x=\cfrac{21}{21}\cdot \cfrac{5}{2}\implies x=1\cdot \cfrac{5}{2}\implies x=2\frac{1}{2}$