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kherson [118]
2 years ago
10

Twenty students are members of the school debate team. Five

Mathematics
1 answer:
harkovskaia [24]2 years ago
8 0

Answer:

75%

Step-by-step explanation:

\frac{15}{20} as a percent = 75%, or 0.75 in decimal form.

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A car travels 21 km in 16 minutes. What is its average speed in km/h?
bekas [8.4K]

Answer:

78.6km/h

Step-by-step explanation:

<em><u>Speed=distance÷time</u></em>

<u>distance</u>=21km

<u>time</u>=16 minutes<u>(convert into hour by dividing it</u> <u>with 60)</u>

=16÷60=0.267

Speed=21÷0.267=78.65km/h

speed =  \frac{distance }{time}

speed =  \frac{21}{0.267}  = 78.6km(h

6 0
3 years ago
Define least common multiple​
AlexFokin [52]

Answer:

the smallest common multiple of two or more numbers

Step-by-step explanation:

6 0
3 years ago
Simply the attached question​
Finger [1]

Answer:

=x⁴−x³−14x²

Step-by-step explanation:

<h3>Let's simplify step-by-step.</h3>

x²(3x²+5x−4)−2x²(x²+3x+5)

<h3>Distribute:</h3>

=(x²)(3x²)+(x²)(5x)+(x²)(−4)+−2x⁴+−6x³+−10x²

=3x⁴+5x³+−4x²+−2x⁴+−6x³+−10x²

<h3>Combine Like Terms:</h3>

=3x⁴+5x³+−4x²+−2x⁴+−6x³+−10x²

=(3x⁴+−2x⁴)+(5x³+−6x³)+(−4x²+−10x²)

=x⁴+−x³+−14x²

<h3>ANS-</h3>

=x⁴−x³−14x²

6 0
2 years ago
2+2=4 the wat does 50*1 equal
Rudiy27

Answer:

34

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
How fast is somebody running if they run 26.2 miles in 2 hours
lianna [129]
They are running 13.1 miles per hour since half of 26.2 is 13.1
3 0
3 years ago
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