1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
iris [78.8K]
3 years ago
9

Sry bout the screen,BUT PLEASE HELP!!!!

Mathematics
2 answers:
Tasya [4]3 years ago
7 0

Answer:

40 mph

Step-by-step explanation:

20 miles in 1/2 hour

1/2 times 2 is 1, so 20 times two is 40 mph

Bumek [7]3 years ago
5 0
It would be 40 miles per hour. That is because if 20 miles is what he can cover in a half hour, than in one full hour he would go twice the amount of time. So 20 times 2 is fourty. So 40 miles per hour is the answer.
You might be interested in
Can anyone help me on this problem? Please it doesn’t make sense to me...
Sav [38]

Answer:

6

Step-by-step explanation:

Cost per item is found by dividing the cost by the number of items. If the woman bought n items for $120, the cost of each item is $120/n. If the woman bought 24 more items, n+24, at the same price, then the cost per item is $120/(n+24). The problem statement tells us this last cost is $16 less than the first cost:

120/(n+24) = (120/n) -16

Multiplying by n(n+24) gives ...

120n = 120(n+24) -16(n)(n+24)

0 = 120·24 -16n^2 -16·24n . . . . . . subtract 120n and collect terms

n^2 +24n -180 = 0 . . . . . . . . . . . . . divide by -16 to make the numbers smaller

(n +30)(n -6) = 0 . . . . . . . . . . . . . . factor the quadratic

The solutions to this are the values of n that make the factors zero: n = -30, n = 6. The negative value of n has no meaning in this context, so n=6 is the solution to the equation.

The woman bought 6 items.

_____

Check

When the woman bought 6 items for $120, she paid $120/6 = $20 for each of them. If she bought 6+24 = 30 items for the same money, she would pay $120/30 = $4 for each item. That amount, $4, is $16 less than the $20 she paid for each item.

3 0
3 years ago
7 less than three times the sum of a number and five
Evgen [1.6K]
<u>Expression Form</u>
(3-7)*n+5
n=Unknown Number
4 0
3 years ago
I need help trying to figure this out I think I have and answer but I want to make sure.
yKpoI14uk [10]

Answer:

34

Step-by-step explanation:

The mean is calculated as

mean = \frac{frequency(midpoint)}{frequency}

let x be the missing frequency, then

Total frequency × midpoint

= (16 × 2) + 7x + (20 × 12) + (10 × 17) = 32 + 7x + 240 + 170 = 442 + 7x

Total frequency = 16 + x + 20 + 10 = 46 + x, thus

\frac{242+7x}{46+x} = 8.5 ( cross- multiply )

442 + 7x = 8.5(46 + x)

442 + 7x = 391 + 8.5x ( subtract 8.5x from both sides )

442 - 1.5x = 391 ( subtract 442 from both sides )

- 1.5x = - 51 ( divide both sides by - 1.5 )

x = 34

The missing frequency is 34

3 0
3 years ago
If I had 6 dollar bill to spent and I buy a chip for 2 dollars and an icecream sandwich box for 3 dollars would I have enough mo
NikAS [45]

Answer:

yes

Step-by-step explanation:

6 -2 = 4

4 - 3 = 1

1 - .80 = .20

7 0
3 years ago
Read 2 more answers
What is Simplify 3^-2 • 3^5
galina1969 [7]

Answer: 3^5 / 3^(-2) = 3^(3)

4 0
3 years ago
Other questions:
  • Brittany is planning a party with her parents.After collecting the following information from two possible locations,Brittany is
    14·2 answers
  • What is the order of 4 x 10^-7, 7 x 10^-9, 1 x 10^4, 2 x 10^4
    15·2 answers
  • LOTS OF POINTS!!! PLEASE ANSWER IT
    5·2 answers
  • Find the solution for 3x + 7 ≥ -29.
    15·2 answers
  • The table shows how many of each type of movie are being shown at a theater.
    5·1 answer
  • Which of the following is closest to the diagonal length between A and B?
    13·1 answer
  • (Photo) Which table shows a relation that is not a function?
    5·1 answer
  • Hi can you please help me with this question. Which is the least value of the five numbers below. 11.03. 11.04 11.1. 11.003. 11.
    11·1 answer
  • Which gives the line of best fit?
    9·1 answer
  • Simplify each expression 2x-5y. If x=2/3 and y=1/4
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!