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4 years ago

At 3 pm the level of the water in the pool was 10 feet at 6pm the level of water was 2 feet

Mathematics

1 answer:

Vitek1552 [10]4 years ago

7 0

It went down 8ft in 3 hours if thats what your asking

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According to the 2008 U.S. census, California had a population of approximately 4 × 10^7 people and Florida had a population of

qaws [65]

Answer:

D. The population of California was approximately two times the population of Florida.

Step-by-step explanation:

California's population was 4 x 10^7= 40,000,000

Florida's population was 2 x 10^7= 20,000,000

So therefore Califirnia's population was approximately two times the population of Florida.

I hope this helps!!

7 0

3 years ago

For the parallelogram find the value of the variables show your work.

alekssr [168]

5x + 2 must be equal to 17. Subtract to from both sides, then divide both sides by 5 and x = 3. 3y - 6 must equal 21. Add 6 to both sides, then divide both sides by 3, and y = 9.

3 0

3 years ago

2/3 × 42 pls explain in steps

sergij07 [2.7K]

Answer:

Step-by-step explanation:

Convert element to fraction:

2/3 x 42/1

Cross-cancel common factor:

2/1 x 14/1

Multiply Factors:

2 x 14

1 x 1

Multiply the numbers 14 x 2 = 28

And boom, the answer is 28!

8 0

3 years ago

Read 2 more answers

Pls help asap not very good @ math

yanalaym [24]

Answer:

b. The function is linear and has y intercept (0, 20,000)

Step-by-step explanation:

The function is linear and has y intercept at (0, 20,000)

8 0

3 years ago

Line Segment BC has endpoints B (3,5) and C (7,15). Find the missing coordinates of A (x,9) and D (17,y) such that AB and CD are

o-na [289]

Answer:

x=-7

y=11

Step-by-step explanation:

Perpendicular Vectors

Two vectors defined as their endpoints $\vec u=$ and $\vec v=$ are perpendicular if their dot product a.b is zero. The dot product is

$\vec u.\vec v=ac+bd$

In other words

ac+bd=0

Let's treat all the points as the extremes of vectors, so we can easily find the missing coordinates

B (3,5) and C (7,15) define a segment, the vector

$\overrightarrow{BC}==$

The point A is A (x,9), we need to form a vector with B

$\overrightarrow{AB}==$

this vector must be perpendicular to BC, so, applying the dot product we have

$4(x-3)+40=0$

$4x-12=-40$

$x=-7$

The point D is D(17,y), we need to form a vector with C

$\overrightarrow{CD}==$

this vector must be perpendicular to BC, so, applying the dot product we have

$(4)(10)+(10)(y-15)=0$

$40+10y-150=0$

$10y=110$

$y=11$

The points are

$\boxed{A(-7,9), D(17,11)}$

4 0

3 years ago