What is the value of 15x - 20x?

A. -35x
B. -5x
C. 5x
D. 35x

Answer:

888 + 88 + 8 + 8 + 8 = 1000

simple

Answer:

1 hour

Step-by-step explanation:

We are given that

Day       Hours

Sunday    0

Monday   1.5

Tuesday    2.5

Wednesday  2.5

Thursday       3

Friday            0

Saturday       n

Mean number of hours of  study per day=1.5

Mean=[tex]\frac{sum\;of\;data\;}{total\;number\;of\;data\;points}[/tex]

Total number of days=7

Using the formula

[tex]1.5=\frac{0+1.5+2.5+2.5+3+0+n}{7}[/tex]

[tex]1.5\times 7=9.5+n[/tex]

[tex]10.5-9.5=n[/tex]

[tex]n=1[/tex]

Hence,  number of hours you need to study on Saturday=n=1

50% off makes the new price half of the original, then another 50 % would be half off the discounted price, so they actually end up paying 25 % of the original price:

50 % x 50 % = 25 %

Answer:

she was charged for 50% of the 50% off

Step-by-step explanation:

Lets say the original price was 100$ The store discounted it by 50% so it is now 50$ but the coupon take 50% off of that 50 so it would be 25$

Step-by-step explanation:

step 1. properties of equality have an "=" in the equation.

step 2. properties of inequality have a <, <=, >=, or a >.

Answer:

this is clear that answer

Answer:

58y is the correct answer to this question

Answer:

#4 it makes the most sense.

Step-by-step explanation:

Sorry if i'm wrong

Answer:

It's the first one, A

Step-by-step explanation:

Plugged each one into a SD calculator, the first one is the largest

Answer:

About 5043.58

Step-by-step explanation:

The standard form for an exponential decay after t time is:

[tex]\displaystyle f(t)=a(r)^{t/d}[/tex]

Where a is the initial value, r is the rate decay, t is the time that has passed, and d is the amount of time it takes for 1 cycle.

The initial value is 9800. So a = 9800.

The quantity cuts in half. So, r = 1/2.

And it cuts in half every 6 days. For this question, we will convert this to hours. 6 days = 144 hours. So, we can let d = 144, where t will be in hours.

Therefore, our function is:

[tex]\displaystyle f(t)=9800\Big(\frac{1}{2}\Big)^{t/144}[/tex]

Where t is the amount of time that has passed, in hours.

Then the quantity left after 138 hours will be:

[tex]\displaystyle f(138)=9800\Big(\frac{1}{2}\Big)^{138/144}\approx 5043.58[/tex]

Answer:

CSA of a cylinder = 144cm²

Step-by-step explanation:

Given the following data;

Base circumference = 36cm

Height = 4cm

To find the curved surface area (CSA) of the cylinder;

CSA of a cylinder = 2πr * h

But 2πr = 36cm

Substituting the values into the equation, we have;

CSA of a cylinder = 36 * 4

CSA of a cylinder = 144cm²

Answer:

Step-by-step explanation:

Use Pythagorean's Theorem for a right triangle. Your best bet when learning/visualizing word problems is to draw a picture, then learn how to visualize in your head over time.

[tex]3^2+x^2=12^2\\9+x^2=144\\x=\sqrt{135}[/tex]

The radical can be further simplified because 135 is the product of 9 and 15. 9 has a perfect root of 3.

[tex]x=3\sqrt{15}[/tex] meters or 11.62 meters

Answer:

227.5

Step-by-step explanation:

65 mhp

after 3.5 h

Just multiply

65 x 3.5 = 227.5

Answer:

227.5

Step-by-step explanation:

multiply 65 mph to 3 1/2 [3.5 (estimated)] to calculate the distanbce travelled

Answer:

3/5

Step-by-step explanation:

Answer:

3/1 or 3

Step-by-step explanation:

7 1/3  = 7x3 + 1/3 =21 + 1/3 =22/3

7x3/3 = 21/3

-------------------------------------------------

2 4/9 2x9 + 4/9 = 18 + 4 /9= 22/9

2x9/9 = 18/9

Divide: 22/3 : 22/9 =22/3 x9/22 =

22/3 x 9/22 = 198/66 66/66 x 3/1 = 3

Answer:

The mean is 8.4

Step-by-step explanation:

First you find the class centers.

3-6 = 4.5

7-10 = 8.5

11-14 = 12.5

15-18 = 16.5

The sum of all the scores = 4.5 * 7 + 8.5 * 10 + 12.5 * 6 + 16.5 + 2 = 210

The sum of the number of scores = 7 + 10 + 6 + 2 = 25

The mean = 210/25 = 42/5 = 8.4

Answer:

[tex]Ratio = 2:3[/tex]

Step-by-step explanation:

Given

[tex]Cards = \{2,5,7,8,9,11\}[/tex]

Required

Ratio of odd numbers to total

First, list out the odd numbers

[tex]Odd = \{5,7,9,11\}[/tex]

The card has 4 odd numbers out of a total of 6.

So, the ratio is:

[tex]Ratio = Odd : Total[/tex]

[tex]Ratio = 4:6[/tex]

Divide by 2

[tex]Ratio = 2:3[/tex]

Hence, the ratio of odd to total is 2 to 3

Step-by-step explanation:

step 1. x > -2 means numbers greater than -2 but not including -2.

step 2. you graph a single variable on a number line.

step 3. the graph would include an open circle above -2 (not equal to -2)

step 4. the line would go right of the open circle (greater than) and have an arrow at the end.

step 5. the answer is b.

The width is 3.

A rectangular prism is 3d. This means that there are three dimensions being multiplied by each other to obtain the overall volume. We can use the equation V = lwh to solve this equation, with V being volume, and the following, length, width, height. Substituting in the values (and changing the mixed numbers to improper fractions for simplicity):

1035/4 = (15/2)(23/2)(w)

w = (1035/4)(2/15)(2/23)

w = 3

Answer:

15.06 seconds.

Step-by-step explanation:

Hit Ground→Height=0

−16x^2  +232x + 134=0

Answer:

78? pls correct me if I'm wrong

Step-by-step explanation:

Length times Width equals Area.

6.5×12=78

Answer:

anywhere within 13.5 < cm < 14.5   ie) 13.7cm

Step-by-step explanation:

Pythagoras for all diagonals or right angle sides.

12^2 + 6.5^2 = c^2

sqrt 144 +  sq rt 42.25 = c^2

c^2 = sq rt 186.25 =  13.6473441  = 13.7cm

nearest 10th of a cm = 13.5<cm<14.5

Answer:

i think it is y=15x-6

Step-by-step explanation:

if it is correct plz plz mark as brainliest

thank you

19NBoli

Answer:

y = 2x-6

Step-by-step explanation:

Slope intercept form:

y = mx+b

m = slope

b = The point where the line crosses the y-axis

So if you put it all together you get the answer of:

y = 2x-6

I hope this helped!

P.S. I am so sorry I couldn't respond earlier :(

Sincerely,

Rekifromsk8theinfinity

:D

Answer:

Pythagorean theorm

Step-by-step explanation:

A^2+B^2=C^2

c is the long line, a and b are the outside lines

Answer:

Angle JKM = ANGLE JKL - MKL

= 155 - 39

= 116

Answer:

84

Step-by-step explanation:

Let the third term be x.

So, the numbers will be:

24, 36, x, 126

Since, all the four terms are in proportion.

Therefore,

[tex] \frac{24}{36} = \frac{x}{126} \\ \\ x = \frac{24 \times 126}{36} \\ \\ x = \frac{3,024}{36} \\ \\ x = 84[/tex]

Answer:

I'm only here cause of the pfp haha

Step-by-step explanation:

you look good if that's you

Answer:

a) $53.34

b) 84,360.9 gallons

Step-by-step explanation:

let 'x' = cost of bill for 30,000 gallons

a) i set up a proportion as follows:

$1.33/748g = x/30,000

i cross-multiplied and got $53.34

b) i set up a proportion as follows:

let 'y' = how many gallons $150 can buy

$1.33/748g = 150/y

i cross-multiplied and got 84,360.9 gallons

Answer:

[tex]y = 1125x+30000[/tex] --- The equation

The median income in 2030 is $75000

Step-by-step explanation:

Given

Represent years since 1990 with x and the income with y.

So, we have:

[tex](x_1,y_1) = (0,30000)[/tex] --- In 1990

[tex](x_2,y_2) = (16,48000)[/tex] --- In 2006

Solving (a): Express as a function.

First, we calculate the slope

[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]

[tex]m = \frac{48000-30000}{16-0}[/tex]

[tex]m = \frac{18000}{16}[/tex]

[tex]m = 1125[/tex]

The equation is then calculated as:

[tex]y = m(x-x_1)+y_1[/tex]

This gives:

[tex]y = 1125(x-0)+30000[/tex]

Open bracket

[tex]y = 1125x-0+30000[/tex]

[tex]y = 1125x+30000[/tex]

Solving (b): Income in 2030.

In 2030, x = 40.

Substitute 40 for x in [tex]y = 1125x+30000[/tex]

[tex]y = 1125*40 +30000[/tex]

[tex]y = 45000 +30000[/tex]

[tex]y = 75000[/tex]

Solving (c): The significance of the slope.

In (a), the slope is calculated as 1125.

This implies that the yearly rate is $1125

That depends on what you mean by a "way" of having children. Some of the more obvious answers: One. Four boys and four girls, there's no other way of getting that many boys or that many girls. 40320. Usually each child has its own distinct DNA. The information in DNA can be converted into a number, and there are 8-factorial = 8! = 40320 orderings for eight numbers. 70. If each boy is considered to be the same until it is born and then named, so that the first four boys will always be named the same way and the same for the girls, then you can find the number of ways using binomial coefficients. The number of ways of arranging four equal boys and four equal girls into an order, is the same as the number of ways of choosing four numbers from 1 to 8 representing the position of the boys in that order. The number of ways of choosing a set of 4 numbers from 8 is called "8 choose 4" sometimes written 8C4 and is calculated as (8*7*6*5)/(4*3*2*1) (The numererator product in nCr stops when you have r numbers) (8*7*6*5)/(4*3*2*1) = 70

Answer:

As parents have 5b and 3 g

so if we add them it becomes 8

hence family has 8 children

Answer: 7 inches

Step-by-step explanation:

4 times 1 3/4 is 7

Answer:

D

Step-by-step explanation:

If im inncorect you can check this with "Mathaway"

Answer: D

Hope this helps!