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2 years ago

Four students were discussing how to find the unit rate for a proportional relationship. Which method is valid?

Mathematics

2 answers:

LenKa [72]2 years ago

7 0

Answer:

Step-by-step explanation:

Nadusha1986 [10]2 years ago

3 0

D is the right answer i did this…..

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PLEASE HELP ASAP!! i will mark you brainliest

V125BC [204]

Answer:

1. I am not sure about the first one. I tried everything and nothing I got from any of my work is looking right.

2. AB = 5

3. 8

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3 years ago

What’s the answer to quesion A

Olin [163]

Answer:

Plug in your x value into your equation --> y=2x+3

Step-by-step explanation:

Do this for each x-value that's missing the y- value :)

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2 years ago

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If you want to place a 9 3/4inch towel bar in the center of a door that is 27 1/2 wide how much faith will be on the each side o

vlada-n [284]

Either 1.4 or 1.75 i think

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3 years ago

PLS HELP I WILL AWARD BRANLIEST

sveticcg [70]

Answer:

x = 14

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Step-by-step explanation:

6x = 180 - 124 + 2x

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2 years ago

Right triangles abc and dbc with right angle c are given below. If cos(a)=15,ab=12 and cd=2, find the length of bd.

dmitriy555 [2]

see the attached figure to better understand the problem

we have that

$cos(A)=\frac{1}{5} \\ AB=12\ units\\ CD=2\ units$

Step 1

Find the value of AC

we know that

in the right triangle ABC

$cos (A)=(AC/AB)\\AC=AB*cos(A)$

substitute the values in the formula

$AC=12*(1/5)\\ AC=2.4\ units$

Step 2

Find the value of BC

we know that

in the right triangle ABC

Applying the Pythagorean Theorem

$AB^{2} =AC^{2}+BC^{2}\\ BC^{2}=AB^{2} -AC^{2}$

substitute the values

$BC^{2}=12^{2} -2.4^{2}\\BC^{2}= 138.24\\ BC=11.76\ units$

Step 3

Find the value of BD

we know that

in the right triangle BCD

Applying the Pythagorean Theorem

$BD^{2} =DC^{2}+BC^{2}$

substitute the values

$BD^{2} =2^{2}+11.76^{2}$

$BD=11.93\ units$

therefore

the answer is

the length of BD is 11.93 units

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2 years ago

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