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3 years ago

Sketch the net of the following figure on a sheet of paper and describe in words what is would look like.

Mathematics

1 answer:

tatiyna3 years ago

3 0

The net would look like a square surrounded with four triangles, one on each side.

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They created 250 in 8 hours. How many slides did they create per hour

Katarina [22]

They created 31.25 slides per hour, 31 and a quarter

5 0

3 years ago

Convert each rate using dimensional analysis. Round to the nearest tenth, if necessary. 45 mi/h = ___ ft/s a. 66 c. 26.4 b. 15.6

vovikov84 [41]

I get A for this one.....66

8 0

4 years ago

Read 2 more answers

Please I need help with this question!

likoan [24]

Answer:

I. 60%

II. 75.4 kg

Step-by-step explanation:

We will use the z-scores and the standard normal distribution to answer this questions.

We have a normal distribution with mean 69 kg and variance 25 kg^2 (therefore, standard deviation of 5 kg).

I. What percentage of adult male in Boston weigh more than 72 kg?

We calculate the z-score for 72 kg and then calculate the associated probability:

$z=\dfrac{X-\mu}{\sigma}=\dfrac{72-69}{5}=\dfrac{3}{5}=0.6\\\\\\P(X>72)=P(z>0.6)=0.274$

II. What must an adult male weigh in order to be among the heaviest 10% of the population?

We have to calculate tha z-score that satisfies:

$P(z>z^*)=0.1$

This happens for z=1.28 (see attachment).

Then, we can calculate the weight using this transformation:

$X=\mu+z^*\cdot\sigma=69+1.28\cdot 5=69+6.4=75.4$

5 0

3 years ago

Misty wishes to obtain 85 ounces of a 40% acid solution by combining a 72% acid solution with a 25% acid solution. How much of e

Y_Kistochka [10]

13.15 ounces of 72% acid and 71.85 ounces of 25% acid are needed

Step-by-step explanation:

Total mass of acid required= 85 ounces

Let the mass of 72% acid be 'a'

Let the mass of 25% acid be 'b'

a + b = 85

b = 85-a

85(40/100) = a(72/100) + b(25/100)

85(2/5) = a(72/100) +(85- a) (25/100)

34 = (72a/100) + (2125/100) - (25a/100)

34 - (2125/100) = (72a + 25a) /100

(3400-2125)/100 = 97a /100

97a = 1275

a = 13.15 ounces

b = 85 - 13.14

b = 71.85 ounces

13.15 ounces of 72% acid and 71.85 ounces of 25% acid are needed

4 0

3 years ago

Translate the sentence into an inequality.

Liula [17]

Answer:

Step-by-step explanation:

sentence —————————-——————> math expression

Ten increased by —————————————> 10 +

the product of a number ‘x’ and 5 —————> 5x

less than -15 —————————-——————> ...... ≤ -15

Conclusion:

10 + 5x ≤ -15

8 0

2 years ago