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2 years ago

Solve 3a+2+3a+7 using distributive property

Mathematics

1 answer:

marshall27 [118]2 years ago

3 0

Answer:6a+9

Step-by-step explanation:

You cant combine a number with a variable that doesn’t have a variable

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Why would engineers and architects need to find angles in a polygon

agasfer [191]

As a engineer who was mechanical then electrical most buildings, schematics,etc require some form of calculation for some shapes seeing that those shapes are what make up the world. Say for example you need to make something like a mother board pro house knowing it's shape and angle helps make a more accurate structure during the blue printing and build phase. No one just goes in and wings it you need to determine angles for things you don't know that the point of it.

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3 years ago

Maria goes to Applebee's with her 2 friends. They each order an entrée, which costs $15 each, and a soda, which costs $3.50 each

Leona [35]

Answer:

Part A: The total is 57.58

Part B: 19.19 each

Step-by-step explanation:

Part A: 15(3) +3.50(3)=55.50

55.50 plus the 3.75% tip (not really addition i dont know how to find a percentage so i looked that part up) but it come out to $57.58

Part B: 57.58 divided by 3 is $19.19 ( I do 3 because Maria and 2 more friends)

Hope it helps and that it is 100% correct dont come at me if something is wrong with my math

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2 years ago

2. A rectangle has a width, w and a length that is 3 more than 2 times longer than the width.

nika2105 [10]

Answer:

2w+2(3+2w)=P, w*(3+2w)=A

Step-by-step explanation:

if w is 2, then P=4+14, and A=2*7.

7 0

2 years ago

A computer maker receives parts from three suppliers, S1, S2, and S3. Fifty percent come from S1, twenty percent from S2, and th

rewona [7]

Answer:

a) 4.9 % of all parts is defective or 0.049 of the total parts.

b) 0.5102 is the probability that the defective part was supplied by S1

Step-by-step explanation:

N is the total number of parts from supplier S1, S2 and S3.

N1 = 0.5*N is the total number of part supplied by S1

N2 = 0.2*N is the total number of part supplied by S2

N3 = 0.3*N is the total number of part supplied by S3

a) if Nd1 is the number of defective parts from supplier S1, Nd2 is the number of defective parts from supplier S2 and Nd3 is the number of defective parts from supplier S3, the the total defective parts Nd is:

Nd = Nd1 + Nd2 + Nd3, where

Nd1 = 0.05*N1 = 0.05*0.5*N = 0.025*N,

Nd2 = 0.03*N2 = 0.03*0.2*N = 0.006*N,

Nd3 = 0.06*N3 = 0.06*0.3*N = 0.018*N,

Then Nd = Nd1 + Nd2 + Nd3 = 0.049*N, so Nd/N = 0.049

b) $P(S1 \vert d) = \frac{P(S1,d)}{P(d)} = \frac{P(d \vert S1)}{P(d)} = \frac{0.05*0.5}{0.049} \approx 0.5102$

for the last expression I used the Bayes tehorem.

$P(S1 \vert d)$ is the probability that occur S1 given that d (defective) is true. This a conditional probability.

see at https://en.wikipedia.org/wiki/Bayes%27_theorem

6 0

2 years ago

1.)6.23yard=__feet<br>2.)7.5miles=__km<br>3.)758mm=__m

jekas [21]

Answer:

1)18.69ft

2)12.07km

3)0.758

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers