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aalyn [17]
3 years ago
6

Can someone help me out here? +brainliest

Mathematics
1 answer:
natali 33 [55]3 years ago
3 0

Answer:

  A) 40

  B) length = 4.275 km; not quite true. See below for explanation.

Step-by-step explanation:

A) Your calculator can tell you the ratio ...

  (national pennies)/(local pennies) = (8×10⁶)/(2×10⁵)

  = (8/2)×10⁶⁻⁵ = 4×10¹ = 40

The national drive collected 40 times as many pennies as the Valley Stream Central goal.

__

B) Multiplying the number of pennies by the diameter of each will tell the length of the line of pennies. That length can be compared to the 5 km distance to determine if the reporter's statement is true. (It is <em>not</em> true.)

  length of string = (length of penny) × (number of pennies)

  = (19×10⁻⁶ km) × (2.25×10⁵) = 42.75×10⁻¹ km = 4.275 km

The length of the pennies laid side-to-side is less than 5.0 km. The reporter's statement is not true.

_____

All scientific and graphing calculators and many 4-function calculators will let you enter numbers in scientific notation.

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100 points
inna [77]

\huge{ \mathbf{  \underline{ Answer }\:  \:  ✓ }}

The sand we need to fill the cylinders is equal to the total volume of the six cylindrical posts .

Given terms ( common for each cylinder ) :

  • height (h) = 4 ft
  • radius. (r) = 0.5 ft

\large \boxed{ \mathrm{volume =\pi {r}^{2}  h}}

  • 3.14 \times  \dfrac{1}{2}  \times   \dfrac{1}{2}  \times 4

  • \mathrm{3.14 \: ft {}^{3} }

Since volume of each cylinder is equal, so total volume of six cylindrical post :

  • 3.14 \times 6

  • { \mathrm{18.84 \: ft {}^{3} }}

_____________________________

\mathrm{ ☠ \: TeeNForeveR \:☠ }

3 0
3 years ago
Read 2 more answers
If you eat one quarter of a pizza and your dog eats one eighth of it, what percent is left over?
slamgirl [31]
Take 3 quarters minus one eighth and you’ll get ur answer
4 0
3 years ago
The coach pays $72 for 18 hamburgers. What is the cost per hamburger? What math concept do you use to solve the problem?
Talja [164]

Answer:4

Step-by-step explanation:

you divide 72 by 18.

5 0
3 years ago
Read 2 more answers
you have 3.75 to spend at a vending machine. You want to buy at least three health bars. Regualr health bars cost 0.75 each and
DedPeter [7]

Answer:

Let x be the number of regular health bars you buy and y the number of strawberry health bars you buy. Then:

0.75x+1.25y=3.75

x+y>=3

Step-by-step explanation:

For the first equation, we have to assume that you will spend all of your money, otherwise it becomes an inequation. The money you spend on regular bars is 0.75x dollars and the money you spend on strawberry bars is 1.25y, so if you spend your 3.75 dollars on the bars, then 0.75x+1.25y=3.75.

For the second, you will always buy x+y health bars, regular and strawberry. There isn't enough information to make this into a equation, the only thing we can deduce is the inequation x+y>=3.

If we also assume that x and y are integers (we can't buy half-bars or one-fourth of a bar) then the minimum number of bars we can buy is 3 (3 strawberry bars) and the maximum is 5 bars (5 regular bars). x+y must be an integer too, so the possibilities for the second equation are x+y=3, x+y=4 and x+y=5. There is a finite number of solutions in any case.  

4 0
3 years ago
When a customer wants pie for dessert, you cut whole pies into 7 equal slices. At the end of your shift, 3737 of a cherry pie, 2
matrenka [14]

the answer is 13/7 and here is the correct question

the answer is 13/7 and here is the correct questionwhen a customer wants pie for dessert you cut a whole pies into 7 equal slices...at the end of your shift 3/7 of. a cherry pie.2/7. of an apple pie.3/7 of a peach pie.and 5/7 of a blueberry pie remain...How much pie remains as a fraction of. a whole pie...

Answer:

13/7

Step-by-step explanation:

From the question, we have

3/7 of cherry pie

2/7 of apple pie

3/7 of peach pie

5/7 of blueberry pie

Now we have to add up all of these in order to get the total amount of pie

3/7 + 2/7 +3/7 +5/7

= (3+2+3+5)/7

=13/7

If expressed as a mixed fraction

= 1 6/7

In conclusion, 13/7 pie remains as a fraction of a whole.

4 0
3 years ago
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