MATHEMATICS HIGH SCHOOL

Please help me! Thanks what is the ratio of a to b?

1/2 = a+b/a-b

A. -3

B. -1/2

C. -1/3

D. 3

Answers

Answer 1
Answer: (Cross Multiply)2a+2b=a-b
a=-3b
if b=1; a=-3
correct answer is -3..
Good Luck..
Answer 2
Answer: 1=a+b. 2=a-b a= 2+b 1=2+b+b. a=2-1/2=3/2 -1=2b b=-1/2 a/b= (3/2)/(-1/2) = (3/2)(-2/1) =-3

Related Questions

Simplify this;what is -2x + x?
Find the length of a rectangular lot with a perimeter of 140 meters if the length is 4 meters more than the width. (P = 2L + 2W)
Dante is making a necklace with 18 rows of tiny beads in which the number of beads per row is given by the series 3 + 10 + 17 + 24 + ... a. Use summation notation to write the series. Explain what the numbers in the summation notation represent in this situation and how you found the expression used in the summation.. . b. Find the total number of beads in the necklace. Explain your method for finding the total number of beads.
Find the probability. Round to nearest tenth.
Help me pls show your work!

Point P has coordinates (2,3). Point Q is symmetric to point P with respect to the line x = 4. What are the coordinates of point Q. Im wondering how you solve this. I think it's (3,6) A. (2,5)
B. ( 5,3)
C. (3,6)
D. (6,3

Answers

You are given the first point (2, 3) and a line x = 4. If you go ahead and graph these, it makes it a little more clear when they say that point p is symmetric with point Q with respect to the line x = 4.

Line x = 4 is the line of symmetry, so point Q is reflected across it. Point p has an x value of 2 (2 away from the line of symmetry, so point Q's x value has to be 2 away on the other side... 6. The y value is unchanged so your point is

D. (6, 3)

The design of a digital box camera maximizes the volume while keeping the sum of the dimensions at 6 inches. If the length must be 1.5 time the height, what should each dimension be?

Answers

v=1.5l*l*w
w=6-l-1.5l
v=1.5l*l*(6-l-1.5l)
which simplifies to 
v=9l^2-3.75l^3
and so we take the derivative of that function in terms of l
(d)/(dx)v=18l-11.25l^2
then we set that to 0
-11.25l^2+18l=0
using the quadratic formula
(-b+or- √(b^2-4ac))/(2a)
(-18+or- √(18^2-4*11.25*0))/(2*-11.25)
simplifying..
(-18+or- √(324))/(-22.5)
(-18+√(324))/(-22.5)=0
(-18-√(324))/(-22.5)=1.6

at this point i noticed an error, i used l instead of h... but thats ok

pluggin 0 and 1.6 for h, lets check answers
1.6: h=1.6 l=2.4 w=2
0: h=0 l=0 w=6

so the answer is h=1.6 l=2.4 w=2, which gives the greatest volume of 7.68

Kenneth has entered a check payment of $350.25 in his checkbook. If the old balance was $545.95, what is his latest balance? A.)$896.25
B.)$195.70
C.)$195

Answers

Answer:

The correct option is B.

Step-by-step explanation:

The old balance of kenneth's checkbook was $545.95.

Kenneth has entered a check payment of $350.25 in his checkbook.

It means the balance of checkbook is reduced by $350.25.

The latest balance of check book is

\$545.95-\$350.25=\$195.70

Therefore the latest balance of kenneth's check book is $195.70. Option B is correct.

what is the new volume of a rectangular prism that is originally 12 cubic meters and is them resized using scale factor of 4 on each side length?

Answers

lets say each side length of the prism is 1, 3, and 4,
1x3x4=12 cubic meters
you then times each by four
1x4=4
3x4=12
4x4=16
you then multiply them together
4x12x16
and the answer would be what it equals
4x12x16=768 cubic meters
so the new prism's volume would be 768 cubic meters

A survey found that 50% of teenagers prefer to watch a movie at a theater over other viewing options. You want to know the estimated probability that three out of four randomly chosen teenagers do not prefer watching a movie at a theater. How could you design a simulation for this situation?Flip a fair coin four times, with heads representing teenagers who prefer watching a movie at a theater and tails representing those who do not.


Pick a card from a deck of standard playing cards four times, with red suits representing those who prefer watching a movie at a theater and black suits representing those who do not.


Spin a spinner with four equal sections three times, with one section representing each person.


Roll a six-sided die four times, with even numbers representing those who prefer watching a movie at a theater and odd numbers representing those who do not.


Generate a set of four numbers using a number generator, with numbers 0 to 5 representing those who prefer watching a movie at a theater and 6 to 9 representing those who do not.

Select all the correct answers.

Answers

Answer:

1. Flip a fair coin four times, with heads representing teenagers who prefer watching a movie at a theater and tails representing those who do not.

2. Pick a card from a deck of standard playing cards four times, with red suits representing those who prefer watching a movie at a theater and black suits representing those who do not.

4. Roll a six-sided die four times, with even numbers representing those who prefer watching a movie at a theater and odd numbers representing those who do not.

Step-by-step explanation:

Basically you need to do something 4 times, with each time having a 50/50 chance.

For 1, it flips the coin 4 times and a coin toss is 50/50

For 2, it pics 4 cards, and the deck of cards has a 50-50 chance of either red or black

For 3, it spins it only 3 times, so is wrong

For 4, it rolls the die 4 times, and even and odd is 50-50

For 5, 0-5 consist of 6 number, while 6-9 is only 4 numbers thus is not 50-50 so is wrong

Answer:

1,2,4

Step-by-step explanation:

if ur in courseware then i just did the math test as well

WHAT IS THE GREEN BLANK???






PLEASE HELP ME ASAPPPP

Answers

Answer:

23

Step-by-step explanation:

Answer:

23

Step-by-step explanation:

N = number of nickels

D = number of dimes

N + D is the total number of coins which we are told is 23

The number in the green box is 23.
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