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marshall27 [118]
2 years ago
15

Evaluate.

Mathematics
1 answer:
ohaa [14]2 years ago
8 0

Step-by-step explanation:

\frac{9.2 \times  {10}^{ - 8} }{2.3 \times  {10}^{3} }  \\  = 4.0 \times  {10}^{ - 11}

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What is 12x5-3x20 I'm having so much troubleee
Andrei [34K]
12×5=60 3×20=60
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6 0
2 years ago
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5. Ms. Lee has 220 students in all her classes. If her classes collected 2860 pounds of food, how many meals did each student pr
jarptica [38.1K]

Answer:

Each students provides 13 pounds of meal

Step-by-step explanation:

Total students in Ms. Lee class = 220

Total pounds of food collected = 2,860

how many meals did each student provide?

Meals provided by each student = Total pounds of food collected / total number of students

= 2,860 / 220

= 13 pounds

Each students provides 13 pounds of meal

Note: 1.2 pounds of food equals one meal

1.2 pounds : 1 meal = 13 pounds : x meals

1.2/1 = 13/x

1.2 * x = 1 * 13

1.2x = 13

x = 13 / 1.2

= 10.83 meals

Approximately 11 meals to the nearest number

Note:1 kilogram is 2.2 pounds

1 kg : 2.2 pounds = x kg : 13 pounds

1/2.2 = x / 13

1 * 13 = 2.2 * x

13 = 2.2x

x = 13/2.2

= 5.91 kilogram

Approximately x = 6 kilograms

3 0
3 years ago
3x +6= 27<br> x =<br> how do you solve this.
Serjik [45]
3x + 6 = 27

step 1. subtract 6 from both sides

3x = 21

step 2. divide both sides by three to get x alone

x = 7

hope this helps
8 0
3 years ago
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Which of the following are equivalent to 140%?<br><br> 0.14<br> 5/7<br> 1 2/5<br> 1.4
Alika [10]
1.4

To make a percent a decimal, divide it by 100.

140 ÷ 100

= 1.4


♧
5 0
3 years ago
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Alisiya [41]

Answer:

72

Step-by-step explanation:

2*-5=-10

-10*-6=60

60-(-12)=60+12=72

3 0
2 years ago
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