What is the solution to the proportion? n/18 = 5/9 (i think its 10) a. n = 2.5 b. n = 5 c. n = 10 d. n = 15?

QUESTION POSTED AT 19/08/2019 - 05:51 PM

Answered by answersmine AT 19/08/2019 - 05:51 PM

You've got it, the answer is 10!

n/18=5/9
9n=5(18)
9n=90
n=10
Post your answer

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Can somebody help me on #'s 10 &14 plz

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ANSWERED AT 23/09/2019 - 04:29 AM


QUESTION POSTED AT 23/09/2019 - 04:29 AM

Which is cheaper for a $56 item that cost $9.25 to ship. A 15% coupon off the cost of the item or free shipping

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QUESTION POSTED AT 23/09/2019 - 04:28 AM

What's the least common multiple of 15 and 75

I looked it up accouple times and all the answers say it is 75

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QUESTION POSTED AT 23/09/2019 - 04:26 AM

On a graph with y values ranging from 108,175 to 986,432, what is a reasonable scale to use on y axis with 10 tick marks

Count by 100,000 sorry the answer is late

ANSWERED AT 23/09/2019 - 04:26 AM


QUESTION POSTED AT 23/09/2019 - 04:26 AM

Braden has 10 red model cars, which are 2/5 of the total number of cars in his collection. How many cars does Braden have in his collection? A) 4 B) 10 C) 25 D) 50

25 cars, because if 10 cars = 2/5 of his collection that means 5 cars are 1/5. Since 1/5 x 5 = 1, that means there are 25 cars in his collection. (5x5 = 25)

ANSWERED AT 23/09/2019 - 04:25 AM


QUESTION POSTED AT 23/09/2019 - 04:25 AM

Use the graph to state the solution for the system. (In other words, what is the solution for the system?) x+2y=4 (line a) 3x-2y=4 (line b)

(2,1) is the solution because its where they both intersect..

ANSWERED AT 23/09/2019 - 04:25 AM


QUESTION POSTED AT 23/09/2019 - 04:25 AM

You are given the table below. x 4 8 12 16 20 f(x) 11 25 16 9 31 Use the table and n = 4 to estimate the following. Because the data is not monotone (only increasing or only decreasing), you should sketch a possible graph and draw the rectangles. 20 (integral) f(x)dx 4

Solution:

X      4      8       12       16          20

F(x)   11      25      16       9           31

A function is said to be increasing if , x_{1}> x_{2}, then f(x_{1})>f(x_{2}) {\text{and decreasing if } x_{1}> x_{2}, then f(x_{1})<f(x_{2}).

As you can see from the table given as x increases , f(x) increases as well as decreases.

So it is increasing as well as decreasing function.

Now plotting the graph on two dimensional coordinate plane and drawn perpendicular from these points on X axis.

\int_{4}^{20}f(x)dx=\int_{4}^{8}f(x)dx+\int_{8}^{12}f(x)dx+\int_{12}^{16}f(x)dx+\int_{16}^{20}f(x)dx

Equation of line joining two points (x_{1},y_{1}), and (x_{2},y_{2}) is \frac{y-y_{1}}{x-x_{1}}=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

Equation of line joining two points (4,11) and (8,25) is

4(y-11)=14(x-4)

4 y -44 = 14 x -56

4 y = 14 x -12

y= \frac{7x}{2}-3 --------(1)

Area under line (1) is

\int_{4}^{8}f(x)dx=\int_{4}^{8}(\frac{7x}{2}-3) dx=\frac{7x^2}{4}-3x\left \{ {{x=8} \atop {x=4}} \right. =112-24-28+12=72

Equation of line joining (8,25) and (12,16) is

4(y-25 )= -9(x-8)

4 y - 100= -9 x + 72

4 y = -9 x + 172

y = \frac{-9x}{4} +43--------(2)

Area under line 2 is

\int_{8}^{12}f(x)dx=\int_{8}^{12}(\frac{-9x}{4} +43)dx=\left \{ {{x=12} \atop {x=8}}   \frac{-9x^2}{8} +43x = -162 +516+72-344=82

Equation of line joining (12,16) and (16,9) is

-4(y-16) = 7(x-12)

-4 y + 64= 7 x -84

-4 y = 7 x -148

y = \frac{-7x}{4} +37-----------(3)

Area under the line 3 is

\int_{12}^{16}f(x)dx=\int_{12}^{16}(\frac{-7 x}{4} +37)dx=\left \{ {{x=16} \atop {x=12}}   \frac{-7x^2}{8} +37 x = -224 +592+126-444=50

Equation of line joining (16,9) and (20,31) is

4(y-9) = 22(x-16)

4 y - 36 = 22 x - 352

4 y = 22 x - 316

y= \frac{11x}{2}-79---------(4)

Area under the line 4 is

\int_{16}^{20}f(x)dx=\int_{16}^{20}(\frac{11 x}{2} -79)dx

=\left \{ {{x=20} \atop {x=16}}   \frac{11x^2}{4} -79 x = 1100-1580-704+1264=2364-2284=80


Total Area = Area under the line (1+2+3+4)

=\int_{4}^{20}f(x)dx=\int_{4}^{8}f(x)dx+\int_{8}^{12}f(x)dx+\int_{12}^{16}f(x)dx+\int_{16}^{20}f(x)dx

= 72 +82+50+80

= 284 square units

You can find area using the formual of area of trapezoid which is = \frac{1}{2}[Sum of parallel sides]× [perpendicular distance between them]

ANSWERED AT 23/09/2019 - 04:25 AM


QUESTION POSTED AT 23/09/2019 - 04:25 AM

A mountain climber is at an elevation of 10,712 feet. After 4 hours, he is at an elevation of 8,884 feet. Find the climber’s vertical speed using this formula:

I am not sure about the formula but if you subtract 8,884 from 10,712 you get 1,828. Then, if you divide that by 4 you get 457. 457 fph(feet per hour) should be the climbers vertical speed.

ANSWERED AT 23/09/2019 - 04:24 AM


QUESTION POSTED AT 23/09/2019 - 04:24 AM

If the sales tax rate is 7.25% in California,then how much would you pay in Los Angeles for a pair of shoes that cost $39.00? Need by 10:00 and showed work

39*7.25% = 2.8275 roundup to 2.83
39+2.83 = 41.83 & that is the total cost after tax

ANSWERED AT 23/09/2019 - 04:24 AM


QUESTION POSTED AT 23/09/2019 - 04:24 AM

Prove that a line that divides two sides of a triangle proportionally is parallel to the third side. Be sure to create and name the appropriate geometric figures.

Wait i want to say a median cause a median is connected to a midpoint ad a midpoint divides a segment into 2 congruent segment, or i guess you cant use a reflexive property, i feel like i'm saying nonesense

ANSWERED AT 23/09/2019 - 04:24 AM


QUESTION POSTED AT 23/09/2019 - 04:24 AM

In a bicycle store,a $500 bicycle is marked,"get a 30% discount."What is the sale price of the bicycle? Need by 10:00 and I need to show work

$500 x .7 (price-discount=sale price) = $350 

ANSWERED AT 23/09/2019 - 04:23 AM


QUESTION POSTED AT 23/09/2019 - 04:23 AM

Make This Division Sentence True: _____ / _____ = 25 Reminder 7

107/4 equals 25 remainder 7

ANSWERED AT 23/09/2019 - 04:23 AM


QUESTION POSTED AT 23/09/2019 - 04:23 AM

21 = m + 9; m= 11 solution

21-9=12
M=12
12 +9=21
your answer is M=12

ANSWERED AT 23/09/2019 - 04:23 AM


QUESTION POSTED AT 23/09/2019 - 04:23 AM

Determine whether the cost for ordering multiple items that will be delivered is sometimes, always or never proportional. Explain your reasoning?

It could sometimes be proportional. The reasoning here is that if all the items have different prices it won't be, however if the items you are ordering all have the same price they will be!

ANSWERED AT 23/09/2019 - 04:21 AM


QUESTION POSTED AT 23/09/2019 - 04:21 AM

Willis bought a gallon of paint. He painted a wall that is 9 ft high and 10 ft wide. Then he used the rest of the paint to paint 46 square feet in the hall. How many square feet did the gallon of paint cover?

We want to figure out how much area the paint covered,

So,

9* 10 = area of the wall

adding the other 46 we can assume that the paint covered,

136 square feet of space

ANSWERED AT 23/09/2019 - 04:20 AM


QUESTION POSTED AT 23/09/2019 - 04:20 AM

Willis bought a gallon of paint. He painted a wall that is 9 ft high and 10 ft wide. Then he used the rest of the paint to paint 46 square feet in the hall. How many square feet did the gallon of paint cover?

The wall that is 9 ft by 10 ft is 90 square feet then add 46 square feet from the hall 
90 + 46 = 136

The answer is 136 square feet

ANSWERED AT 23/09/2019 - 04:20 AM


QUESTION POSTED AT 23/09/2019 - 04:20 AM

I don't know how to answer this....Is it proportional and if it is how do you know...if it's not why is it not?!!Please Help!!

Hi , the table shows a non proportional relationship , because the table doesn't start at zero and because there isn't a specific pattern.

ANSWERED AT 23/09/2019 - 04:20 AM


QUESTION POSTED AT 23/09/2019 - 04:20 AM

A store pays $25 for a desk chair. The store marks up the price by 40% . What is the new price?

25 x (40/100) = x
x = $10

So the 40% is $10
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Hence, the new price is $35

ANSWERED AT 23/09/2019 - 04:19 AM


QUESTION POSTED AT 23/09/2019 - 04:19 AM

How can you tell when a pattern shows counting on by 10

If you see a zero that means that you are counting by 10s For example: 10,20,30,40,50,60,70,80

ANSWERED AT 23/09/2019 - 04:19 AM


QUESTION POSTED AT 23/09/2019 - 04:19 AM

What are the first 10 prime numbers and How

2, 3, 5, 7, 11, 13, 17, 19, 23, 29

A prime number is a number that is only divisible by 1 and itself

ANSWERED AT 23/09/2019 - 04:17 AM


QUESTION POSTED AT 23/09/2019 - 04:17 AM

What are the first 10 prime Numbers and how

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These are prime numbers because a prime number is divisible by other numbers than just itself and one. 3 is not divisible by any other numbers than itself and one, so it is considered a prime number.

ANSWERED AT 23/09/2019 - 04:17 AM


QUESTION POSTED AT 23/09/2019 - 04:17 AM

Beatriz is reading a book tgat has 530 pages. If she reads 10 pages a day, how many days will it take her to finish the book?

530page ÷ 10page/day =53

The answer is 53days

ANSWERED AT 23/09/2019 - 04:17 AM


QUESTION POSTED AT 23/09/2019 - 04:17 AM

Draw a quick picture to show the number 24. then draw a quick picture to show 24 after you have regrouped I tend as 10 ones. explain how both pictures show the same number, 24

I would love to help you, But I can't draw a picture. Draw 24 with 2 base tens and 4 ones. Take away 20. I THINK that the last part is saying that you can add stuff to your result to get the number you had before.( THIS IS PROBABLY NOT TRUE, JUST LETTIN YA KNOW ME THOUGHTS)

ANSWERED AT 23/09/2019 - 04:13 AM


QUESTION POSTED AT 23/09/2019 - 04:13 AM

R+2<15=? solve for r

All you have to do here is subtract 2 on both sides to isolate R.

R + 2 < 15
R < 13

ANSWERED AT 23/09/2019 - 04:13 AM


QUESTION POSTED AT 23/09/2019 - 04:13 AM

The number that cannot be a solution to the inequality x > -3 is

The number is 3 because is positive

ANSWERED AT 23/09/2019 - 04:11 AM


QUESTION POSTED AT 23/09/2019 - 04:11 AM