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Goshia [24]
3 years ago
10

What property was used in step 1 to arrive at step 2?

Mathematics
1 answer:
wariber [46]3 years ago
8 0
The distributive property (the 5 is distributed to both the x and -7)
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A person standing d=145 centimeters from a mirror notices that the angle of depression from his eyes to the bottom of the mirror
Serggg [28]

The length of the mirror is 64.52 cm

<u>Explanation:</u>

Given:

Distance of the person from the mirror = 145cm

Angle of depression = 14°

Angle of elevation = 11°

Vertical dimension of the mirror = ?

For angle of elevation:

tan(11) = \frac{AB}{BO}\\ \\0.195 = \frac{AB}{145} \\\\AB = 28.275 cm

For the angle of depression:

tan(14) = \frac{BC}{BO} \\\\0.25 = \frac{BC}{145} \\\\BC = 36.25 cm

Total length of the mirror, AC = AB + BC

                                              = 28.275 + 36.25cm

                                              = 64.52 cm

Therefore, the length of the mirror is 64.52 cm

7 0
3 years ago
Given six distinct pairs of gloves, 12 distinct gloves in all, how many ways are there to distribute two gloves to each of six s
noname [10]

a) if the two gloves someone receives might both be for the left hand or right hand.

b) if each sister gets one left and one right.

Soln:

a) So i thought about dissectng the problem first into finding the number of ways in which I could make pairs of gloves:

C(12, 2)

then I asked how many ways could the sets of gloves be assigned amongst the 6 sisters:

<span><span>6!</span><span>6!</span></span>

and taking the product of this would give me the amount of ways this could occur:

= C(12,2) * 6!

then for part b)

using this same idea except:

C(6,1) C(6,1) for the left and right glove each .

the C(6,1)*C(6,1)*6!

Right way to think them through?

7 0
4 years ago
I need help pleaseeeeeeeee
bixtya [17]

Answer:

The answer is C  

6 0
3 years ago
Find the equation of the line that passes through the point (-3,-6) and is parallel to the line y=-4/3x+7/3
Rufina [12.5K]

Answer: The answer is y=-4/3x-10.

Step-by-step explanation:

-6=-4/3(-3)+b

-6=4+b

-4  -4

-10=b

y=-4/3x-10

7 0
3 years ago
A dressmaker needs to cut 4-inch pieces of ribbon from rolls of ribbon that are 9 feet in length. How many 4-inch pieces can the
Anestetic [448]

Answer:

she has 90 feet of ribbon in total and she can cut 270 pieces

Step-by-step explanation:

there's 108 inches in 9 feet

108/4=27

now you have 10 rolls so multiply

27x10=270 ribbons

you have 10 rolls of 9 feet to make ribbons

10x9=90 feet

3 0
3 years ago
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