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LenaWriter [7]
2 years ago
14

7.42 – 5(-1.62 +2.4)

Mathematics
2 answers:
Fofino [41]2 years ago
6 0

Answer:

3.52

Step-by-step explanation:

(-1.62 + 2.4) = 0.78

5(0.78) = 3.9

7.42-3.9=3.52

zimovet [89]2 years ago
3 0

Answer:

7.42−5(−1.62+2.4)

=3.52

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Write the numeral 0.0284 × 10^4 in scientific notation. A. 28.4 × 101 B. 0.284 × 103 C. 2.84 × 102 D. 284
Thepotemich [5.8K]

Answer:

2.84×10²

Step-by-step explanation:

0.0284×10⁴

Move the decimal point 4 places to the right.

284

Now write in scientific notation by moving the decimal point 2 places to the left, behind the 2.

2.84×10²

7 0
2 years ago
Two particles are projected simultaneously towards each other from opposite ends of a straight
Anit [1.1K]

Answer:

The problem with this question is that it is missing an important number, which is the length of the tube. Assuming that the tube is 10 meters long (=1,000 centimeters long)

time (in        distance traveled         distance traveled       distance

seconds)     by particle A in cms     by particle B in cms    between both

                                                                                              particles in cms

1                               97                            49                     854

2                               93                            47                     714

3                               89                            45                     580

4                               85                            43                     452

5                               81                            41                     330

6                               77                            39                     214

7                               73                            37                     104

8                               69                            35                     0

   

After 8 seconds both particles should meet. Particle A traveled 664 centimeters and particle B traveled 336 centimeters.    

8 0
3 years ago
What is the distance between the points (11,19) and (11,-6) in the coordinate plane?
IrinaK [193]

Answer: 25 units

Step-by-step explanation:

distance with negatives is still an addition but you have to turn the negative into a positive to get the answer.

6 0
1 year ago
The school band is selling items to raise​ $9,500 for a trip. For each item​ sold, the​ band's profit is a percent of the sellin
Finger [1]

The goal amount of the student groups are given in percentages, which are fractions based on one hundred.

  • <u>The flutist raised more money than the trumpeters</u>
  • <u>The difference in the amounts the student raised is $256.5</u>

Reasons:

The amount the school band is raising for the trip = $9,500

Goal of the flutist = To raise 18% of the total amount

Goal of the trumpeters = 85% of the flutist's goal

Required:

The group that raise more money, given that their goals are met

Solution:

Given that the goal of the trumpeters trumpeters is 85% of the goal of the flutist, <u>the flutist raised more money</u>.

Required:

The difference in the amount raised by the students

Solution:

The amount raised by the flutist = 18% of $9,500 = 0.18 × $9,500 = $1,710

Amount the trumpeters raised = 85% of $1,710 = 0.85 × $1,710 = $1,453.5

The difference in the amount raised = $1,710 - $1,453.5 = <u>$256.5</u>

Learn more about percentages here:

brainly.com/question/1367867

7 0
2 years ago
Simplify (5^-2)^4 Please Help i don’t understand
Maslowich

Answer:

5^ -8  or  1/ 5^8

Step-by-step explanation:

(5^-2)^4

We know that a^b^c = a^(b*c)

(5^-2)^4 = 5^(-2*4) = 5^(-8)

We know that a^ - b = 1/ a^b

5^ -8 = 1/ 5^8

4 0
2 years ago
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