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2 years ago

I bought 10 1/4 yards of ribbon. I used 7 3/4 yards of ribbon on a project

Mathematics

2 answers:

viva [34]2 years ago

3 0

I think you would have 3 1/2 yards left (3 2/4 simplified)

Wittaler [7]2 years ago

3 0

what kind of problem is this if subtraction then you would have 3 1/2 or 3 2/4 left.

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Helppppppppppppppppppppppppppppppp

LuckyWell [14K]

Answer:
10√3 which is the last option

Explanation:
√30 * √10 = (30*10)^1/2
= 300^1/2

300 = 100 * 3
Therefore:
√300 = √100 * √3 = 10√3

Hope this helps :)

5 0

2 years ago

$34 plus 7.375% sales tax =

Norma-Jean [14]

34 x 0.07375= 2.5075

2.5075 + 34 =36.51

or

34×1.07375=36.51

4 0

2 years ago

If a drug has a concentration of 8.22 mg per 3.039 mL, how many mL are needed to give 7.469 gram of the drug? Round to 1 decimal

aalyn [17]

Answer:

2.8 litres

Step-by-step explanation:

8.22 mg per 3.039 mL

2.704 mg per 1 mL

7.469 gram = 7469 milligrams

7469 milligrams per 2,761.34927mL

= 2.761 litres = 2.8 litres

7 0

2 years ago

Howard is designing a chair swing ride. The swing ropes are 5 meters long, and in full swing they tilt in an angle of 29 degrees

Firlakuza [10]

Answer:

Step-by-step explanation:7.12 meters tall

4 0

2 years ago

5#The distribution of scores on a standardized aptitude test is approximately normal with a mean of 480 and a standard deviation

kirza4 [7]

We want to find the value that makes

$P(X\ge x)=0.2$

To find it we must look at the standard normal table, using the complementary cumulative table we find that

$P(Z\ge z)=0.20045\Leftrightarrow z=0.84$

Then, using the z-score we can find the minimum score needed, remember that

$z=\frac{x-\mu}{\sigma}$

Where

σ = standard deviation

μ = mean

And in our example, x = minimum score needed, therefore

$\begin{gathered} 0.84=\frac{x-480}{105} \\ \\ x=0.84\cdot105+480 \\ \\ x=568.2 \end{gathered}$

Rounding to the nearest integer the minimum score needed is 568, if you get 568 you are at the top 20.1%.

7 0

10 months ago