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3 years ago

6. Pleassss helppp!

Mathematics

1 answer:

yaroslaw [1]3 years ago

3 0

Answer:

Step-by-step explanation:

First expand the expression so you know the coefficients of x and y.

4(2x+y+2y) = 4(2x+3y) = 8x+12y

8x+12y = 8x+12y

6x+7y ≠ 6x+12y

8x+y+2y = 8x + 3y ≠ 8x+12y

8x+4y+8y = 8x+12y = 8x+12y

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Sarah's age is four more than twice her brothers age. Write two equivalent algebraic equations that can be used to find their ag

marissa [1.9K]

Answer:

Step-by-step explanation:

Let her brother's age be x

Sarah is 2x + 4

3 0

3 years ago

The weights of newborn baby boys born at a local hospital are believed to have a normal distribution with an average weight of 5

Lisa [10]

Answer: 0.4987

Step-by-step explanation:

Given : The weights of newborn baby boys born at a local hospital are believed to have a normal distribution with

Mean : $\mu=5\text { lbs}$

Standard deviation : $\sigma= 2\text{ lbs}$

Let X be the random variable that represents the weight of randomly selected student .

Z score : $z=\dfrac{x-\mu}{\sigma}$

For x = 5 lbs

$z=\dfrac{5-5}{2}=0$

For x = 11 lbs

$z=\dfrac{11-5}{2}=3$

By using the standard normal distribution table , the probability that the weight of the newborn baby boy will be between 5 lbs and 11 lbs :-

$P(5$

Hence, the probability that the weight of the newborn baby boy will be between 5 lbs and 11 lbs =0.4987

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3 years ago

2(4-2x)-2<-2x+6 what does x equal?

iVinArrow [24]

Answer:

Step-by-step explanation:

the answer is in the picture

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3 years ago

marty saves $1 the first day of a month, $2 the second day, $4 the third day. he continues to double his savings each day. find

kvv77 [185]

It seems you double the amount each day. keep doing that until you get to 15

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3 years ago

Read 2 more answers

The area of the parallelogram is 96 square miles. Find its base and height.

MakcuM [25]

You can't. There are an infinite number of different parallelograms,
with different dimensions, that all have area of 96 square miles.

Knowing the area doesn't tell you the dimensions.

Here are a few parallelograms with areas of 96 square miles:

-- square, every side 4√6 miles long

-- rectangle, 12 miles long, 8 miles wide

-- parallelogram, base=32 miles, height=3 miles

There are an infinite number of others.

8 0

3 years ago