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rewona [7]
3 years ago
8

Lola needs to sign 96 invitations. Using a stopwatch that measures time to tenths of a second, it takes Lola 5.3 seconds to sign

her full name. Going by the accuracy of the stopwatch, which is the most accurate determination for the number of minutes Lola needs to sign all 96 invitations?
Mathematics
2 answers:
olga nikolaevna [1]3 years ago
8 0
8.48 minutes.
96 x 5.3 = 508.8 / 60 = 8.48
andrew11 [14]3 years ago
5 0

Answer:

8.48\ minutes

Step-by-step explanation:

we know that

it takes Lola 5.3 seconds to sign her full name

so by proportion

Find how many seconds take Lola  to sign 96 invitations

\frac{5.3}{1}\frac{seconds}{invitation}=\frac{x}{96}\frac{seconds}{invitations} \\ \\ x=96*5.3\\ \\x= 508.8\ seconds

Convert seconds to minutes

Remember that

1\ minute=60\ seconds

so

508.8\ seconds=508.8/60=8.48\ minutes

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A building contractor is to dig a foundation 45 feet long, 16 feet wide and 6 feet deep. The contractor pays 13 dollars per load
9966 [12]

9514 1404 393

Answer:

  • 160 yd³ must be hauled
  • $520 is the cost

Step-by-step explanation:

There are 3 feet in a yard, so the volume of the hole is ...

  (45 ft)/(3 ft/yd) × (16 ft)/(3 ft/yd) × (6 ft)/(3 ft/yd)

  = (15 × 16/3 × 2) yd³ = 160 yd³ . . . volume to be hauled

__

The cost is $13/(4 yd³), so the total cost will be ...

  ($13/(4 yd³)) × 160 yd³ = $520 . . . cost of hauling

3 0
2 years ago
PLEASE HELP ASAP!!!!! WILL GIVE BRAINLEST TO CORRECT ANSWER
marysya [2.9K]
It is B 80. Because it is 40 x 2 = 80. Hope thishelped
5 0
2 years ago
Read 2 more answers
The masses of 4 containers loaded on a ship are 28 tonnes,45 tonnes,16.8tonnesand 48500kg .What is 5he total mass in tones?​
Ira Lisetskai [31]

Step-by-step explanation:

first of all we have to change kg into ton= 48500kg into ton =53.462ton(48500/907.168)

after that we add all the weight of 4 container = 28+45+16.8+53.462

total will be his total mass of tones he had =143.262

7 0
3 years ago
Would you rather drive 0.3 miles to fill up for $3.59 per gallon OR drive 1.2 miles to fill up for $3.41 per gallon?Please expla
Vsevolod [243]
We know that, in the US, the average mile per gallon was 25 mpg in 2015. Since we don't have the mile per gallon of the car in our problem, we are going to use that average.
For our first situation, <span>drive 0.3 miles to fill up for $3.59 per gallon:
</span>\frac{25miles-----\ \textgreater \ 1gallon}{0.3miles-----\ \textgreater \ xgallons}
\frac{25}{0.3} = \frac{1}{x}
x= \frac{(1)(0.3)}{25}
x=0.012
<span>We just proved that in our trip, we used 0.012 gallon, and at $3.59 per gallon; we will pay  (0.012)(3.59)=$0.04 for that gasoline.

For our second situation, </span><span>drive 1.2 miles to fill up for $3.41 per gallon:
</span>\frac{25miles-----\ \textgreater \ 1gallon}{1.2miles-----\ \textgreater \ xgallons}
\frac{25}{1.2} = \frac{1}{x}
x= \frac{(1)(1.2)}{25}
x=0.048
We just proved that in our trip, we used 0.048 gallon, and at $3.41 per gallon; we will pay  (0.048)(3.41)=$0.16 for that gasoline.

We can conclude that is much better to drive 0.3 miles to fill up for $3.59 per gallon than drive <span>1.2 miles to fill up for $3.41 per gallon.</span>
8 0
3 years ago
FIND THE EXACT AREA PLEASE HELPPPP ILL GIVE BRAINLIESTTTT
Ede4ka [16]

Answer:

555.94

Step-by-step explanation:

16 x 11 = 176/2

88

since there are two of the same triangle

88 x 2

176

11 is the radius

A = \pix^{2}

A = 3.14 ( pie is 3.14, if not then pi) x (11x11)

A = 3.14 x 121 (or 121\pi)

A = 379.94

379.94 + 176 (or 121pi + 176)

555.94

4 0
2 years ago
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