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Taya2010 [7]
3 years ago
11

Answer each question and explain your reasoning.How long is 75% of 60 minutes?​

Mathematics
2 answers:
uysha [10]3 years ago
5 0

Answer:

45 minutes

Step-by-step explanation:

75% is the same as \frac{3}{4}. This means that we can multiply 60 by  \frac{3}{4} to find 75% of 60.

60*\frac{3}{4} \\\\\frac{180}{4} \\\\\frac{90}{2}\\\\45

Irina18 [472]3 years ago
4 0

Answer:

45 minutes

Step-by-step explanation:

Of means multiply

75% * 60

Change to a decimal

.75 * 60

45

45 minutes

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Find the perimeter of a rectangle of which length is 5 more than the width
Leokris [45]

Answer:

<em>the</em><em> </em><em>perim</em><em>eter</em><em>=</em><em> </em><em>1</em><em>0</em><em>+</em><em>4</em><em>W</em><em>.</em>

<em>where</em><em> </em><em>W</em><em>=</em><em> </em><em>the</em><em> </em><em>wid</em><em>th</em><em>.</em>

Step-by-step explanation:

mathematically, perimeter (p)= 2L +2W

where L= length.and W=width

<em>from</em><em> </em><em>the</em><em> </em><em>exp</em><em>ression</em><em> </em><em>;</em><em>length is 5 more than the width</em>

<em>it</em><em> </em><em>is</em><em> </em><em>wri</em><em>tten</em><em> </em><em>as</em><em> </em>L = 5+W

<em>sub</em><em>stitute</em><em> </em><em>in</em><em> </em><em>the</em><em> </em><em>formu</em><em>la</em><em> </em>

P= 2(5+W)+2W

P=10+2W+2W

P=10+4W as the perimeter of the rectangle.

8 0
3 years ago
Read 2 more answers
To hang lights up on his house.Garrett place is a 14 foot ladder 4 feet from the base of the house. How high up the house will t
Firlakuza [10]

This seems like a right triangle problem.

So assuming 14 feet is the hypotenuse and 4 feet is a leg of the right triangle, we can use the pythagorean theorem (a^{2} +b^{2} =c^{2}) to solve for the height of the house, in which we shall name it x.

So, the equation is 4^{2} +x^{2} =14^{2}.

Solve for x:

16+x^{2}= 196

x^{2}= 196-16

x^{2}= 180

x = 6√5 feet


Hope this helps!

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3 years ago
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Which expression represents x less than 9? A. x−9 B. 9−x C.−9x−9 D. 9x−9
LiRa [457]
The answer is B. 9 - x. I hope this helps!
7 0
3 years ago
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birth weights in norway are normally distributed with a mean of 3570 g and a standard deviation of 500g. if the hospital officia
Svetradugi [14.3K]

Answer:

2630 g

Step-by-step explanation:

From the given information:

Given that:

mean (μ) = 3750 g

Standard deviation (σ) = 500

Suppose the hospital officials demand special treatment with a percentage of  lightest 3% (0.03) for newborn babies;

Then, the weight of birth that differentiates the babies that needed special treatment from those that do not can be computed as follows;

P(Z < z₁) = 0.03

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z₁ = - 1.88

Using the test statistics z₁ formula:

z_1 = \dfrac{X-\mu}{\sigma}

-1.88 = \dfrac{X-3570}{500}

By cross multiply, we have:

-1.88 × 500 = X - 3570

-940 = X - 3570

-X = -3570 + 940

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X = 2630 g

Hence, 2630 g is the required weight of birth   that differentiates the babies that needed special treatment from those that do not

6 0
3 years ago
What is the capacity of a 5cm cube in liters?
xz_007 [3.2K]

1 liter = 1 dm³ = 1000 cm³.

Therefore 5 cm³ = 5 / 1000 liter = 0.005 liters.

Green eyes.

8 0
3 years ago
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