Questions posted in Mathematics

How do I determine the points E and M

Relabel the spot that you have as M. (The reason we are keeping this coordinate is because it is correct just labeled wrong. It lines up perfectly with G and O both)

G is in the wrong spot, you have it in (2,2) it needs to go down 4 places to the coordinates (2, -2)

E will be located directly under O and directly across from G. So, it will be at the coordinates (-4, -2)


ANSWERED AT 17/10/2019 - 09:24 AM


QUESTION POSTED AT 17/10/2019 - 09:24 AM

19 to 17 ratio in simplest form

Very easy just put a : in between 9 and 17!! hope thats helpfull!!!!!

ANSWERED AT 17/10/2019 - 09:24 AM


QUESTION POSTED AT 17/10/2019 - 09:24 AM

Which measurement is the most precise? A 5.52 m C 5.516 m B 552 cm D 550 cm

c is the most precise, because you are going to the furthest decimal point which is more helpful in pinpointing the exact location.

ANSWERED AT 17/10/2019 - 09:24 AM


QUESTION POSTED AT 17/10/2019 - 09:24 AM

A parallelogram whose vertices have coordinates R(1, -1), S(6, 1), T(8, 5), and U(3, 3) has a shorter diagonal of ___. 5 √(13) √(97)

Answer:

A parallelogram whose vertices have coordinates R(1, -1), S(6, 1), T(8, 5), and U(3, 3) has a shorter diagonal of √(13) units.

Step-by-step explanation:

RSTU is parallelogram. The vertices of the parallelogram are R(1, -1), S(6, 1), T(8, 5), and U(3, 3).

Two opposite vertices are connected by the diagonal of a parallelogram. So, RT and SU are two diagonal.

Distance formula:

D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Using this formula we get

RT=\sqrt{(8-1)^2+(5+1)^2}=\sqrt{49+36}=\sqrt{85}

SU=\sqrt{(3-6)^2+(3-5)^2}=\sqrt{13}

Therefore the parallelogram whose vertices have coordinates R(1, -1), S(6, 1), T(8, 5), and U(3, 3) has a shorter diagonal SU of √(13) units.

ANSWERED AT 17/10/2019 - 09:23 AM


QUESTION POSTED AT 17/10/2019 - 09:23 AM

Quadrilateral QRST is an isosceles trapezoid. Q(-3,-2); S(3,2); T(5,-2). what would point R be?

Here it is graphed... But I'm not sure what the x value of R would be... I know its Y value is 2

ANSWERED AT 17/10/2019 - 09:23 AM


QUESTION POSTED AT 17/10/2019 - 09:23 AM

A line has a slope of 1/4 and passes through point 0.4-1/2. What is the value of the y-intercept?

Linear equation with the form y=mx+b

m=1/4 (given) & it passes through (0.4, - 0.5)

Let's calculate b; -0.5 = (1/4)(0.4) + b
-0.5 =0.25(0.4) + b
-0.5 - 0.1 = b  -0.6
y= 0.25x - 0.6
y intercept is calculated for x=0
Then y intercepts =-0.6 

ANSWERED AT 17/10/2019 - 09:23 AM


QUESTION POSTED AT 17/10/2019 - 09:23 AM

Elaine brought 3/4poundof potato salad to a picnic. jake broughtv2/3 pound of macaroni salad .who brought more salad?explain the strategy you used to solve the problem.

Elaine brought more salad to the picnic.
To figure this question out, you have to make the fractions have common denominators. The LCM (Least Common Multiple) of 3 and 4 (the denominators of the fractions) is 12. 
3/4= 9/12 (Elaine) (Numerator times 3, Denominator times 3)
2/3= 8/12 (Jake) (Numerator times 4, Denominator times 4)

ANSWERED AT 17/10/2019 - 09:23 AM


QUESTION POSTED AT 17/10/2019 - 09:23 AM

Which set of integers is a Pythagorean triple? 3, 5, 6 5, 12, 13 15, 9, 17 6, 8, 12

Answer:

The set of integers which form a Pythagorean triple is:

5,12,13

Step-by-step explanation:

We are asked to find the set of integers such that they form a Pythagorean triplets.

Three integers a,b,c are said to form a Pythagorean triplets if they satisfy the property:

c^2=a^2+b^2

1)

3,5,6

6^2=36

and

3^2+5^2=9+25\\=34\neq 36

Hence option: 1 is incorrect.

2)

5, 12, 13

13^2=169

and

5^2+12^2=25+144=169

This means:

13^2=5^2+12^2

Hence, option 2 is correct.

3)

15,9,17

17^2=289

Also,

15^2+9^2=225+81=306\neq 289

Hence, option 3 is incorrect.

4)

6,8,12

12^2=144

and:

6^2+8^2=36+64=100\neq 144

Hence, option 4 is incorrect.

ANSWERED AT 17/10/2019 - 09:23 AM


QUESTION POSTED AT 17/10/2019 - 09:23 AM

What is the graph of the function f(x) =x^2+3x+5/x+2

Ok, this is what I got.

Hope this helps you. ;)

ANSWERED AT 17/10/2019 - 09:23 AM


QUESTION POSTED AT 17/10/2019 - 09:23 AM

Graph the pH function using the graphing utility. Then answer the questions. What is the pH of lemon juice that has a hydrogen ion concentration of 0.01 moles per liter? The pH is??

Answer:

pH = 2

Step-by-step explanation:

To graph the pH function :

The range of the pH function varies from 1 to 14

And the concentration of hydrogen ion goes from 0 to 1

Taking pH value on y-axis and concentration of hydrogen ion on x-axis, The resultant graph is attached below :

Given : Concentration of hydrogen ion = 0.01

Now, pH = -log(0.01)

pH=-\log(\frac{1}{100})\\\\pH=-(\log 1 - \log 100)\\pH=-(0-2)\\\implies\bf pH=2

ANSWERED AT 17/10/2019 - 09:23 AM


QUESTION POSTED AT 17/10/2019 - 09:23 AM

What represents the most accurate estimation of 719-348

Um..... probably 500 cause  200 less is 300 and 200 more is 700

ANSWERED AT 17/10/2019 - 09:22 AM


QUESTION POSTED AT 17/10/2019 - 09:22 AM

Find the other endpoint of a line segment with one endpoint at (-3, 5) and whose midpoint is (5, 2). (7, 2) (1, 7/2) (13, -1)

I feel that it would be (7,2) :)

ANSWERED AT 17/10/2019 - 09:22 AM


QUESTION POSTED AT 17/10/2019 - 09:22 AM

The prism is partially filled with 150 cubic centimeters of sand. What fraction of the prism is filled by the Sand

75 fihbfdkhbskdj bidsh  d9u dissregard that it had to be 20 characters sooooooooooo

ANSWERED AT 17/10/2019 - 09:22 AM


QUESTION POSTED AT 17/10/2019 - 09:22 AM

What is the length of the hypotenuse in a right triangle with legs of length 14 and 48?

Answer: =50

Explanation: An unknown leg of a right triangle can be found using the Pythagorean theorem. Pythagorean theorem: a²+b²=c²

a²=14²+48²

a²=14²=14*14=196

a²=48²=48*48=2304

a²=196+2304

a²=196+2304=2500

a²=2500

a²=(25*100)=2500

a=5*10=50

A=50

Hope this helps!

Thanks!

Have a great day!

ANSWERED AT 17/10/2019 - 09:22 AM


QUESTION POSTED AT 17/10/2019 - 09:22 AM

How to prove that line AE is congruent to line CF

It's congruent I think

ANSWERED AT 17/10/2019 - 09:22 AM


QUESTION POSTED AT 17/10/2019 - 09:22 AM

A statue creates a shadow that is 30 feet long. the angle of elevation of the sun is 50 degrees. How tall is the statue and how would i calculate that?

The answer:
first, the angle of elevation, the shadow and the statue form an right triangle.
so, we know that for computing tangent, we use the main formula:

Tan = opposite side / adjacent side
let x be the length of the statue, it is the opposite side
30 feet long is the adjacent side
therefore, 
tan50°= x /30, 1.19 * 30= x, and the x=35.75 feet

ANSWERED AT 17/10/2019 - 09:22 AM


QUESTION POSTED AT 17/10/2019 - 09:22 AM

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

The prism is partially filled with 150 cubic cm of sand what fraction of the prism is filled by the sand

Since 150 can't go into 250 twice as a whole, you know that the percentage is over 50% . To find the percentage (I think, bad memory) You need to find the difference or increase between the two. 250 / 150 = 100 Then divide the increase or difference by the original number (As in 150) then multiply that by 100. The percentage would be 66% 

Hope this helps, though would ask someone again just to be sure

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


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

Who much days are in a week

There are 7 days in one week 

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


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

A monomial is defined as

A monomial is an algebraic expression consisting of a single term.

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


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

That answer to also plz

The answer to this question is 8

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


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

What is the graph of the function f(x) = -x^2+x+20/x+4

F(x) = (-x²+x+20) / (x+4)

-x²+x+20     | x+4
+x²+4x          -x+5
 \\\\ 5x+20
     -5x-20
      \\\\\\\\\
 
 f(x) = (x+4)(-x+5) / (x+4)
 
 f(x) = (-x+5)

The graph is a decreasing line, with origin from 5.



   

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


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

What is the quotient of (x^3+3x^2-4x-12)/x^2+5x+6) A.) x+2 B.) x-2 C.) x+6 D.) x-6

 \frac{x^{3}+3x^{2}-4x-12}{x^{2}+5x+6}

Factor bottom half:
 \frac{x^{3}+3x^{2}-4x-12}{(x+3)(x+2)}

Factor top half:
\frac{(x+3)(x^{2}-4)}{(x+3)(x+2)}

Factor top (x^(2)-4) completely:
\frac{(x+3)(x-2)(x+2)}{(x+3)(x+2)}

Cancel common terms:
\frac{(x+3)(x-2)(x+2)}{(x+3)(x+2)} = \frac{(x+3)(x-2)}{(x+3)} = (x-2)

Your quotient is x-2.

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


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

You mix the letters M, A, T, H, E, M, A, T, I, C, A, and L thoroughly. Without looking, you draw one letter. Find the probability P(A). Write the probability as:a. a fraction in simplest form b. a decimal c. a percent

There are total 12 letters. 3 from them are the letter A.
The probability that the drawn letter is A can be calculated:
P(A)=number of events "letter A occurs"/ number of possible events that may occur 
P(A)=3/12
a. as a fraction: 3/12=1/4
b. as a decimal: 0.25
c. as a percent: 25%

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


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

What is the slope of a line that goes through the points (1, -5) and (-3, 2)?

-1.75 is the slope of the line.

Use the formula y2 - y1 / x2 - x1 to find the slope of a line.
Plug in the numbers in your coordinates.

y2 - y1 / x2 - x1
2 - (-5) / -3 - 1
7 / -4
-1.75

Hope this helps!!

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


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