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EastWind [94]
3 years ago
12

The length of a rectangle is 2 more than twice the width. The area of the

Mathematics
1 answer:
vlada-n [284]3 years ago
8 0

Answer: w=5 , L= 2+2(5)=12

Step-by-step explanation:

L=2+2W

A= 60

LxW=60, now we will replace the L

(2+2W)(W)=60   we multiply

2w^2+2w=60

2w^2+2w-60=0  we divide by 2 the equation so we can work easier

w^2+w-30=0

find out w using the quadratic equation

we will get 2 solution,

w=5 and another solution is -6, which is not valid, as the side can not be negative

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A set of data has a normal distribution with a mean of 50and a standard deviation of 8. What percent of the data should be less
meriva

50% of data will be less than 50

Step-by-step explanation:

A normal distribution has the shape of the graph like a bell.

Given

Mean=50\\SD = 8

we have to find how much data will be less than 50.

So we have to calculate z-score for 50.

z-score=\frac{x-Mean}{SD}\\=\frac{50-50}{8}=0

The z-score is zero. As we have to find the number of values less than 50 we will find the area to the left of curve

P(z

In order to convert the probability into percentage

=0.50*100

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Hence,

50% of data will be less than 50

Keywords: Probability, Area under the curve

Learn more about z-score at:

  • brainly.com/question/10940255
  • brainly.com/question/10941043

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3 years ago
3z-4=6z-17 how do solve
Maru [420]
3z-4=6z-17
-3z-4=-17 (subtracted the 6z from both sides)
-3z=-13 (added the 4 to both sides)
z=\frac{-13}{-3z} (divided both sides by -3z)
z=\frac{13}{3}
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4 years ago
Read 2 more answers
The difference of a number and 48 is -18
kolbaska11 [484]
If your question is what the value of the number you started with the answer would be 30. to find it you add 48 to -18 and you get 30.
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4 years ago
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How do you know to add or subtract when doing polynomials?
grin007 [14]

Answer:

Adding and Subtracting Polynomials. When adding and subtracting polynomials , you can use the distributive property to add or subtract the coefficients of like terms. Use the commutative property to group like terms. (Recall that "like terms" are monomials with the same variables, such as 3 x 2 y and 82 x 2 y .)

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Derrick has 2 1/2 cups of sugar. He needs 1/8 of a cup of sugar for each recipe. How many recipes can be make
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Answer:

20

Step-by-step explanation:

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