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Alinara [238K]
2 years ago
14

Multiply (2.0 ⋅ 10−4) ⋅ (3.1 ⋅ 10−20). Express the answer in scientific notation. The options are:

Mathematics
1 answer:
Mkey [24]2 years ago
3 0
(2.0×10^-4)×(3.1×10^-20)
=(2.0×3.1)×(10^4×10^-20)
=6.2×10^(-4+(-20))
=6.2×10^-24. Hope it help!
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When Mya looked out at the store's parking lot, she noticed that for every 4 cars, there were 6 trucks. If there's a total of 22
olasank [31]

Answer:

<h2>88 cars</h2><h2>132 trucks</h2>

Step-by-step explanation:

This is a ratio problem, the ratio of  cars to trucks

for every 4 cars, there are 6 trucks

represented as a ratio we have 4:6

1. how many of them are cars

applying the part to whole strategy we have

4+6 = 10

let cars be x

\frac{4}{10}= \frac{x}{220}  \\\\x= \frac{220*4}{10} \\\\x= 880/10\\\\x= 88 cars

2.  how many of them are trucks?

let trucks be y

\frac{6}{10}= \frac{y}{220}  \\\\x= \frac{220*6}{10} \\\\y= 1320/10 \\\\y= 132 trucks

3 0
3 years ago
Zero pairs are two numbers that multiply to get 0.<br><br> True<br> False
Neko [114]
That is actually true. Everything thats multiplied by 0 eaquals 0.
4 0
2 years ago
Read 2 more answers
A machine at a graphic design studio produces paper labels for juice bottles. This graph represents the number of labels produce
Jobisdone [24]

Answer:

Option B, would be the correct answer: 75 labels per minute

Step-by-step explanation:

The number of labels produced per minute would be a constant value which would be the slope of this graph represented above.

Slope = \frac{rise}{run}

Slope = \frac{150}{2}

Slope = 75

Hope this helps!

6 0
2 years ago
Read 2 more answers
Find the value of r in the following diagram.
Andrews [41]

Answer:

r = 6.7

Step-by-step explanation:

9²-6²=45

√45=6.7

3 0
3 years ago
Matty jogs 9 km/hr. Compute Matty's speed in m/s.
REY [17]

Answer:

=9 * 1000 / 3600

=9000 / 3600

=2.5m/s

note that 1000m makes 1km and 3600seconds make an hour

Step-by-step explanation:

7 0
3 years ago
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