Help with number 20 please

QUESTION POSTED AT 10/10/2019 - 09:39 AM

Related questions

A parking lot has twice as many cars as trucks. The total number of cars and trucks in the parking lot is 24. How many cars and how many trucks are in the lot?

Let C be the number of cars and T the number of trucks:

C + T =24

but C = 2T

2T + T = 24

3 T =24 band T =8 so C=16

ANSWERED AT 17/10/2019 - 09:21 AM


QUESTION POSTED AT 17/10/2019 - 09:21 AM

Order the numbers from least to greatest: 83/100, 3/4, 1/5

1/5, 3/4, 83/100.
Hope this helps you...

ANSWERED AT 17/10/2019 - 09:20 AM


QUESTION POSTED AT 17/10/2019 - 09:20 AM

A 20-foot ladder is leaning against a tree. The bottom of the ladder is 12 feet away from the bottom of the tree. Approximately how high up the tree does the top of the ladder reach?

We want to use the Pythagorean theorem to find the missing length of the right triangle described in the word problem.

The Pythagorean Theorem is a^2 + b^2 = c^2, where a and b are the side lengths of the right triangle, and c is the hypotenuse.
If we know the lengths of two sides of a triangle, we can always find the length of the third side using this formula.

We're given the lengths of one of the sides (12) and the hypotenuse (20). We plug these numbers into our equation and then solve for x.
(x represents the how high the ladder reaches)

x^2 + 12^2 = 20^2
x^2 + 144 = 400
x^2 + 144 - 144 + 400 - 144
x^2 = 256

Now, find the square root of each side of the parenthesis.

√x^2 = √256
x = 16.

The answer is 16.

If there's anything you don't understand, I would highly recommend going to the website Khan Academy and watch his videos regarding it, he explains things much better than I ever could.

Hope this helps!!

ANSWERED AT 17/10/2019 - 09:20 AM


QUESTION POSTED AT 17/10/2019 - 09:20 AM

Number 12! Show work please

Each friend will get 10(.66666) ounces of lemonade
2 * 4 = 4,
4 * 8 = 32
32 / 3 = roughly 10
there will be 2 ounces of lemonade left

ANSWERED AT 17/10/2019 - 09:17 AM


QUESTION POSTED AT 17/10/2019 - 09:17 AM

Number 12! Please show work

8 ÷ 4 = 2 cups x 8 = 16 Can i be the Brainliest plzzz

ANSWERED AT 17/10/2019 - 09:16 AM


QUESTION POSTED AT 17/10/2019 - 09:16 AM

Solve the following inequality. Then place the correct number in the box provided. 3x + 5 < 6x - 1

X > 2 should be the answer.

Hope this helps.

ANSWERED AT 17/10/2019 - 09:16 AM


QUESTION POSTED AT 17/10/2019 - 09:16 AM

Find the distance between these points.W(-6, -8), X(6, 8) 20 10 √8

\bf \textit{distance between 2 points}\\ \quad \\&#10;\begin{array}{lllll}&#10;&x_1&y_1&x_2&y_2\\&#10;%  (a,b)&#10;W&({{ -6}}\quad ,&{{ -8}})\quad &#10;%  (c,d)&#10;X&({{ 6}}\quad ,&{{ 8}})&#10;\end{array}\quad &#10;%  distance value&#10;d = \sqrt{({{ x_2}}-{{ x_1}})^2 + ({{ y_2}}-{{ y_1}})^2}&#10;\\\\\\&#10;d=\sqrt{[6-(-6)]^2+[8-(-8)]^2}\implies d=\sqrt{(6+6)^2+(8+8)^2}

ANSWERED AT 17/10/2019 - 09:15 AM


QUESTION POSTED AT 17/10/2019 - 09:15 AM

A school principal ordered 1000 pencils. He gave an equal number to each of seven teachers until he had given as many as possible. How many pencils were left?

6 pencils were left
-1,000 divided by 7=142.86
-142x7=994
-1,000-994=6

ANSWERED AT 17/10/2019 - 09:14 AM


QUESTION POSTED AT 17/10/2019 - 09:14 AM

A school principal ordered 1000 pencils he gave an equal number to each of seven teachers until he had given out as many as possible how many pencils were left

If you have 1000 pencils and you divide by 7 teachers, you would have 142 pencils divided evenly. Then you would take the 142 pencils and multiply by 7 which will give you a total of 994 pencils that went to the teachers in total. So the remaining pencils would be 1000 minus 994 and the total left over will be 6 pencils. I hope this helps.

ANSWERED AT 17/10/2019 - 09:14 AM


QUESTION POSTED AT 17/10/2019 - 09:14 AM

Six times a number is greater than 20 more than that number. What are the possible values of that number?

The answer is x>4 I just did this one

ANSWERED AT 17/10/2019 - 09:13 AM


QUESTION POSTED AT 17/10/2019 - 09:13 AM

Number 12! Please show work

1 qt = 4 cups
------   -------
2 qt       x

2 quarts = 8 cups = 128 ounces

1 cup = 8 ounces
--------    ------------
 8 cup       x 

2 quarts = 8 cups = 64 ounces

64 ounces/4 people =  16 ounces is the answer

ANSWERED AT 17/10/2019 - 09:12 AM


QUESTION POSTED AT 17/10/2019 - 09:12 AM

Choose the correct classification of x6 + 3x3 by number of terms and by degree

Degree is 6
There are 2 terms... I think... maybe....

ANSWERED AT 17/10/2019 - 09:10 AM


QUESTION POSTED AT 17/10/2019 - 09:10 AM

Identify as a direct variation, inverse variation or neither. Is the total cost to fill a car gas tank a direct or inverse variation with respect to the number of gallons used?

Answer:

It  is a case of a direct variation.

Step-by-step explanation:

Direct variation--

Two variables x and y are said to be in direct variation if there exist a constant k such that:

y=kx

i.e. with the increase/decrease in one variable the other variable also increases/decreases.

Inverse variation--

Two variables x and y are said to be in inverse variation if there exist a constant k such that:

xy=k

i.e. with the increase in one variable the other decreases and vice-versa.

Here the independent variable is: Number of gallons used.

and the dependent variable is: Total cost to fill a car gas tank.

As we know that as the number of gallons used increases the total cost also increases and it increases by some constant k.

Since, the cost of per gallons is some fixed.

ANSWERED AT 17/10/2019 - 09:09 AM


QUESTION POSTED AT 17/10/2019 - 09:09 AM

I need help with number 28. Please explain or show work. Thank you

X=4 I THINK IS THE ANSWER

ANSWERED AT 17/10/2019 - 09:08 AM


QUESTION POSTED AT 17/10/2019 - 09:08 AM

You roll a number cube. Event A: roll a number less than 3 Event B: roll an odd number Are the events disjointed or overlapping

I believe the answer is overlapping events

your welcome

ANSWERED AT 17/10/2019 - 09:06 AM


QUESTION POSTED AT 17/10/2019 - 09:06 AM

Freddie is at chess practice waiting on his opponent's next move. He notices that the 4-inch-long minute hand is rotating around the clock and marking off time like degrees on a unit circle. Part 1: How many radians does the minute hand move from 3:35 to 3:55? (Hint: Find the number of degrees per minute first.) Part 2: How far does the tip of the minute hand travel during that time?

Part1

there are 360° in a circle (clock), and thus if we check how many degrees in a clock with 60minutes, then it'd be 360/60, or 6° per minute

now, the clock went from 3:35 to 3:55, 20 minutes, how many degree is that? 6*20

part2

\bf \textit{length of an arc}\\\\&#10;s=\cfrac{r\theta\pi }{180}\qquad &#10;\begin{cases}&#10;r=radius\\&#10;\theta=\textit{angle in degrees}\\&#10;----------\\&#10;r=4\\&#10;\theta=6\cdot 20&#10;\end{cases}\implies s=\cfrac{4\cdot 6\cdot 20\cdot \pi }{180}

ANSWERED AT 17/10/2019 - 09:06 AM


QUESTION POSTED AT 17/10/2019 - 09:06 AM

How many numbers between 10 and 99 are divisible by 5.

17 because 100 divided by 5 is 20 but you take away 3 because 5, 10, and 100 won't be accepted.

ANSWERED AT 17/10/2019 - 09:02 AM


QUESTION POSTED AT 17/10/2019 - 09:02 AM

. Find the volume of the composite space figure to the nearest whole number. 210cm^3 180cm^3 120cm^3 60cm^3

 n           i              g             g                   a   :)

Hope this helps you

ANSWERED AT 17/10/2019 - 09:01 AM


QUESTION POSTED AT 17/10/2019 - 09:01 AM

What is 56 divided by 168 as a mixed number please answer ASAP

.333 translated to a fraction would be one-third or 1/3

ANSWERED AT 17/10/2019 - 08:59 AM


QUESTION POSTED AT 17/10/2019 - 08:59 AM

Solve the following inequality: 2(x + 1) – (–x + 5) ≤ –18. A. x ≤ –20 B. x ≤ –9 C. x ≤ –5 D. x ≤ –37

C.
You distribute both the 2 and the -, combine like terms, add three to both sides and then divide out the 3 from 3 on both sides

ANSWERED AT 17/10/2019 - 08:59 AM


QUESTION POSTED AT 17/10/2019 - 08:59 AM

a) One number is five more than another number and the sum of the two numbers is 55, what are the numbers?

25 & 30
25+30=55
30-25=5

ANSWERED AT 17/10/2019 - 08:58 AM


QUESTION POSTED AT 17/10/2019 - 08:58 AM

What number would you add to both sides of x2 + 7x = 4 to complete the square? A.2^2 B.7^2 C, 7^2/2 D.(7/2)^2

The answer is d. (7/2)^2

ANSWERED AT 17/10/2019 - 08:54 AM


QUESTION POSTED AT 17/10/2019 - 08:54 AM

Veda solves the following system of linear equations by elimination. What is the value of x of the solution? A –20 B –1 C 1 D 20

we have

6+4x-2y=0 -----> equation A

-3-7y=10x -----> equation B  

Multiply equation A by -3.5 both sides

-3.5(6+4x-2y)=-3.5*0

-21-14x+7y=0 ------> equation C

Adds equation C and equation B

-21-14x+7y=0 \\-3-7y=10x\\ ---------\\-21-14x+7y-3-7y=10x

-24-14x=10x\\ 14x+10x=-24\\ 24x=-24\\x=-1

therefore

the answer is the option B

x=-1

ANSWERED AT 17/10/2019 - 08:53 AM


QUESTION POSTED AT 17/10/2019 - 08:53 AM