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4 years ago

Find the value of:

Mathematics

1 answer:

nasty-shy [4]4 years ago

5 0

Answer:

the value is 6

Step-by-step explanation:

substitue

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The mass of a freight train is 9.98 ⋅ 106 kilograms. The mass of an aircraft carrier is 7.3 ⋅ 107 kilograms. Approximately how m

Eva8 [605]

Answer:

1980.0

Step-by-step explanation:

19 x 100

8 0

3 years ago

Read 2 more answers

The scores and their percent of the final grade for a statistics student are given. What is the student's weighted mean score?

Phantasy [73]

Answer:

The student's weighted mean score is 92.2.

Step-by-step explanation:

To find the student's weighted mean scored, we multiply each grade by it's weight.

Grades and weights:

Homework: Grade of 86, weight of 20% = 0.2

Quiz: Grade of 87, weight of 5% = 0.05

Quiz: Grade of 91, weight of 5% = 0.05

Project: Grade of 98, weight of 45% = 0.45

Final Exam: Grade of 88, weight of 25% = 0.25.

What is the student's weighted mean score?

0.2*86 + 0.05*87 + 0.05*91 + 0.45*98 + 0.25*88 = 92.2

The student's weighted mean score is 92.2.

7 0

3 years ago

how old is sherif now ? ahmed is eight years younger than sherif in seven years, the sum of their ages will be 7/10 th of 100

Mrrafil [7]

Answer:

32year

Step-by-step explanation:

let Ahmed be x years then sheriff will be x+8

in 7years time

sheriff will be x+8+7=x+15

Then Ahmed will be x+7

sum of their ages will be 7\10×100=70years

x+15+x+7=70

collect like terms

2x+22=70

2x=70-22

2x/2=48/2

x=24years

Sheriff=24+8

32years

8 0

3 years ago

Please help me ASAP!!!! :) I’d appreciate it

Amiraneli [1.4K]

Answer:

5×(-4) = -20

(-1) × 4 = -4

Step-by-step explanation:

Here it' sayin when a positive number ( it may be odd or even ) gets multiplied with an even number ( it may be positive or negative ) , the product will be positive number.

5×(-4) = -20 .Here 5 is a positive number & 4 is a negative even number but the product -20 is a negative number. So it contradicts the statement.

(-1) × 4 = -4 . Here -1 is a negative number & 4 is a positive even number but the product -4 is a negative number. So it contradicts the statement.

5 0

3 years ago

Grayson charges $35 per hour plus a $35 administration fee for tax preparation. Ian charges $45 per hour plus a $15 administrati

babymother [125]

Answer:

For any time period less than 2 hours Ian will charge less than Grayson ....

Step-by-step explanation:

We have given that:

Grayson charges $35 per hour plus a $35 administration fee for tax preparation. Ian charges $45 per hour plus a $15 administration fee

The equation we get is:

45h + 15 ≤ 35h + 35

Combine the like terms:

45h-35h ≤ 35-15

10h ≤ 20

Divide both sides by 10

10h ≤ 20/10

h ≤ 2

At 2 hours the charge is the same for both services.

For any time period less than 2 hours Ian will charge less than Grayson ....

6 0

3 years ago

Read 2 more answers

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