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Cerrena [4.2K]
4 years ago
6

TEST ITEMS

Mathematics
1 answer:
arlik [135]4 years ago
3 0

Answer:

40 cm by 44 cm

Step-by-step explanation:

A square sheet of paper has area 1600 cm^2.

area = s^2

1600 cm^2 = s^2

s = sqrt(1600 cm^2)

s = 40 cm

The side of the square was 40 cm, so the square measured 40 cm by 40 cm.

One side of 4 cm short, so the paper should have been 40 cm by 44 cm.

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Two friends, Neil and Charlie, are going to depart from their houses and ride their bikes towards each other until they meet, an
n200080 [17]

Answer:

0.3 hour or 18 minutes

Step-by-step explanation:

How long means, we are to calculate the time(t)

Hence,

Speed × time = Distance

For Neil , 11 × t

For Charlie = 9 × t

11t + 9t = 6

20t = 6

t = 6/20

t = 0.3 hour

Converting to minutes

1 hour = 60 minutes

0.3 hour = x

x = 0.3 × 60 minutes

x = 18 minutes

Therefore, it will take 0.3 hour or 18 minutes for these two to meet.

6 0
4 years ago
Sheryl spends ​$17 every week on cigarettes and spends ​$24 a month on dry cleaning. On an annual​ basis, the money spent on cig
Rzqust [24]

the correct question is

Compute the total cost per year of the following pair of expenses. Then complete the sentence: On an annual basis, the first set of expenses is _% of the second set of expenses.Sheryl spends $17 every week on cigarettes and spends $24 a month on dry cleaning.


we know that

1 year is equal to 52 weeks

1 year is equal to 12 months

To calculate:

$17 * 52 = $884

$24 * 12 = $288

then

884/288 = 3.0694 * 100 = 306.94%

<span>

</span>

therefore

<span>

</span>

the answer is

<span>306.94%</span>


8 0
4 years ago
Is y=(-2)* an exponential function? (*=x)
liubo4ka [24]
Sure it is. Any function y= f(x) is an exponential one if the constant is raised to the power of x:

y= 5ˣ

y=aˣ

y=(2/3)ˣ
8 0
4 years ago
What is the greatest possible error if Jamal measured the length of the walkway as 15.5 meters?
Harman [31]

Answer:

0.05

Step-by-step explanation:

8 0
3 years ago
Emily is training for a 10K race. On day one, she runs for 20 minutes. On day two, she runs for 30 minutes. On day three, she ru
Shalnov [3]

Answer:

130

Step-by-step explanation:

:0

6 0
4 years ago
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