Answer:
B
Step-by-step explanation:
The m to the y can’t equal to m so it’s b
PLEASE HELP
solve 2v^2+4v=6 by factoring.
Answer:
v = 1 or -3
Step-by-step explanation:
2v^2 + 4v = 6
take 2 as common
2(v^2 + 2v = 3)
v^2 + 2v = 3
Now,
v^2 + 2v - 3 = 0
v^2 - v + 3v - 3 = 0
v(v - 1) + 3(v - 1) = 0
(v - 1) (v + 3) = 0
v = 1 or -3
Answer:
<=>v²+2v-3=0
<=>v²-v+3v-3=0
<=>v(v-1)+3(v-1)=0
<=>(v-1)(v+3)=0
<=>*v-1=0
v=1
*v+3=0
v=-3
(-6x - 8) - (8x-9) subtract the expressions
Answer:
pic below
Step-by-step explanation:
Your mother gave you $13.32 with which to buy a present. This covered 3/5 of the cost. How much did the present cost?
A. Find the answer.
B. Write a formula for the problem.
Answer:
a. $22.2
b= 13.32/x=3/5
Step-by-step explanation:
13.32/x=3/5
13.32×5=66.6
66.6/3=22.2
x(present cost)=$22.2
Answer:
22.20$
3/5 * cost = 13.32
Step-by-step explanation:
3/5 * cost (total price) = 13.32 (we know that 3/5 of the price is 13.32)
to solve
5/3 to cancel out 3/5 and isolate the cost
5/3 * 13.32 = 22.20
What is the negative solution for x(x+4)=0 ?
Answer:
x = -4
Step-by-step explanation:
x(x + 4) = 0
x = 0 ; x + 4 = 0
x = 0 - 4
x = -4
Jessica sold half of her comic books and then bought 7 more. She now has 15. How many did she begin with ?
Answer:
8
Step-by-step explanation:
15-7=8
8+7=15
Answer:
16
Step-by-step explanation:
1) Subtract 7 from 15. 15-7=8
2) Multiply 8 by 2. 8x2=16
Therfore your answer is 16.
A job requires 230' of metal conduit. The conduit comes in 8' sections.
How many sections of conduit will you need to complete this job?
Divide total length needed by length of a piece:
230/8 = 28.75
Round up to 29
They need 29 pieces
An emperor penguin travels a distance of 70 miles each year back to the place of its birth. If that same penguin moves at a speed of 2.4 miles per hour, the function d = 70 – 2.4t represents its distance d from its birthplace t hours after it has started its journey home. Find the zero of this function.
Answer:
29.17 hours
Step-by-step explanation:
to find the zero of the function, set d to equal zero, so
0 = 70 - 2.4t
-70 = -2.4t
-70/-2.4 = t
29.17 = t
Nick wants to purchase a pair of binoculars that is on sale for $155.75. The sales tax rate in his county is 6.5% Calculate the amount of sales tax Nick will pay on the purchase. Round to the nearest cent if necessary.
Answer:
$10.12Step-by-step explanation:
Step one:
given data
we are told that the cost of binoculars is $155.75
and also the sales tax is 6.5%
Step two:
We want to first solve for the sales tax which is 6.5% of $155.75
=6.5/100* 155.75
=0.065*155.75
=10.12
Nick will pay a tax of $10.12
Also Nick will pay a total amount of
= 155.75+10.12
=$165.87
Answer: answere is 10.58
Step-by-step explanation:5.29+5.29=10.58
question is in picture
Answer
Red is -19
Green is -24
Blue is -14
Purple is 17
Step-by-step explanation:
I don't really know what to do but...
Hope I helped.
Answer:
13,24,24,-10
Step-by-step explanation:
when the negatives are in the front it makes a positive number and two negative numbers can make a positive number also. but when the negative number is the second number it will make a negative number.
Slope and y intercept please help im stuck on this problem
Diagonals bisecting each other pls do so smart people intelligence help answer
Answer: Since PR is the long line, PT is half of PR so 34/2 = 17
so PT=17
At a little-known vacation spot, taxi fares are a bargain. A 18-mile taxi ride takes 21 minutes and costs $12.60. You want to find the cost of a 39- mile taxi ride. What unit price do you need?
Given :
A 18-mile taxi ride takes 21 minutes and costs $12.60.
To Find :
The cost of a 39- mile taxi ride. What unit price do you need.
Solution :
Unit price per mile :
[tex]p=\dfrac{12.60}{18}\\\\p = \$0.7\ /mile[/tex]
Cost of 39 mile taxi ride :
[tex]C = 39\times p\\\\C=39\times 0.7\\\\C=\$27.3[/tex]
Therefore, unit price is $27.3 and unit price is $0.7 / mile .
Hence, this is the required solution.
Mike bought five items for lunch that cost a total of $4.55. Hot dogs cost $1.10 each and cookies cost $0.75 each. Which of these systems of equations below could be used to determine h , the number of hot dogs, and c , the number of cookies, Mike bought for lunch?
Answer:
1.1h+0.75c=4.55---------------1
h+c=5--------------2
Step-by-step explanation:
Step one:
given data
total lunch items= 5
let hot dogs be h
and cookies be c
cost of hot dogs = $1.10
cost of cookies = $0.75
total cost = $4.55
Step two:
The linear model for the total cost is given as
4.55=1.1h+0.75c---------------1
and the model for the number of items is
h+c=5--------------2
The systems of the equation for the situation is
1.1h+0.75c=4.55---------------1
h+c=5--------------2
Malakai is attending lessons to learn how to play an instrument. She can attend 4 hours of lessons for a total of $100. assuming the price per hour is constant, how much would it cost for 9 hours of lessons? Show ur work
Answer:
$225
Step-by-step explanation:
$100/4hours=$25
$25 hours per one hour
So, $25x9=$225
Answer:
$225
Step-by-step explanation:
WILL GIVE BRAINLIST . Only answer if you know its correct thanks . question in picture .
Answer:
Step-by-step explanation:
Equation:
Total cost = $4 + $2(admission)
y = 4 + 2x
Initial value:
when x= 1 (one admission)
y= 4 +2(1) =6
so, $6
Rate of change:
m= $2
PLZ ANSWER ASAP!! ONLY IF YOU ARE CORRECT! (MORE THAN ONE ANSWER)
Answer:
C
Step-by-step explanation:
Your friend said that in order to determine the constant of proportionality, the independent variable (x) should be divided by the dependent variable (y). Do you agree? Explain.
In a company, 55 % of the workers are women . If 2205 people work for the company who aren't women , how many workers are there in all?
Answer:
4900
Step-by-step explanation:
If 55% of workers are women, then 45% are not; therefore, we need to answer the following:
2205 is 45% of what number?
2205=45%x
2205/.45=x
4900=x
the VD warehouse is having a clearance sale. a CD player that originally sell for 60 is now priced tp 36 what is the percent decrease in the price
Answer:
Im not 200% sure but i think its 11
As a researcher for a pharmaceutical company, you are designing a study to test the effectiveness of a new treatment for migraine headaches in comparison with the current leading medicine used to treat migraines. You have been given a list of 126 people willing to participate in the trial. The first 70 people are female; the remaining 56 are male. Preliminary research suggests that men and women respond differently to this new treatment.
d) Design an appropriate experiment to determine the effectiveness of the migraine medicine. Scan or take a picture of your design and upload it.
Answer:
hgttyuikiuhhiiookklo
help i will mark brainliest
A rocket ship travels at 2.0×104 miles per hour. If a satellite is 2.5×105 miles from Earth, how long will it take the rocket to make the trip from Earth to the satellite? (Hint: Divide the distance to the satellite by the speed.) Write your answer in scientific notation.
Answer: Time taken =1.25 x 10^1 hours 0r 4.5 x 10^4s
Step-by-step explanation:
Step 1
how long will it take the rocket to make the trip from Earth to the satellite = Time taken for the rocket to make the trip from Earth to the satellite
Speed = Distance / Time ,
Time = Distance / speed
Step 2-- solving
Time = Distance / speed
Time=2.5×10^5 miles/2.0×10^4 miles per hour
=12.5 hours = 1.25 x 10^1 hours
or 1.25 x 10^1 hours x 3600 = 45,000 seconds = 4.5 x 10^4s
Write the equation y=3/4x+4 in standard form
Answer:
3x-4y=-16
Step-by-step explanation:
One number is eight more than a second number. Five times the first is 8 less than 2 times the second. Find the numbers.
The value of the first number is?
The value of the second number is?
Step-by-step explanation:
let the 2 numbers be x and y.
x - 8 = y --(1)
5x = 2y - 8 --(2)
sub (1) into (2):
5x = 2(x - 8) - 8
5x = 2x - 24
3x = -24
x = -8
sub x = -8 into (1):
y = -8 - 8 = -16
first number is -8 and second number is -16.
Topic: algebraic equations + simultaneous equation
If you like to venture further, feel free to check out my insta (learntionary). I'll be constantly posting math tips and notes! Thanks!
find where the two lines intersect.Please help
what is the answer A 3-pack of light bulbs costs $3.45. A 4-pack of the same light bulbs costs $4.20.
Which pack has better value?
Enter the correct answer in the box.
Answer:
Step-by-step explanation:
Answer: The pack with the better value is the 4 pack!
$3.45/3 = 1.15 per bulb
$4.20/4 = 1.05 per bulb
Step-by-step explanation:
2(5x - 3) - 4 = x + 4 solve for x and show work
Answer:
x= 14/9 = 1 5/9
Step-by-step explanation:
Use the distributive property to multiply 2 by 5x−3.
2(5x−3)−4=x+4
Subtract 4 from −6 to get −10.
10x−6−4=x+4
Subtract x from both sides
10x−10=x+4
Combine 10x and −x to get 9x.
10x−10−x=4
Add 10 to both sides.
9x−10=4
Divide both sides by 9.
x= 14/9
Please mark brainliest.
True or False: A justification is a statement of the reason for each step in a proof.
Answer:
Step-by-step explanation:
False.
Solve the following equation show your work x^2-4=0
Answer:
x = 2, x = - 2
Step-by-step explanation:
Step 1:
x² - 4 = 0 Equation
Step 2:
x² = 4 Add 4 on both sides
Step 3:
x = [tex]\sqrt{4}[/tex] Square 4
Answer:
x = 2, x = - 2
Hope This Helps :)
Help me please:) I don’t understand this question
are there options to the question or do you have to write it
9514 1404 393
Answer:
3x -4y = 12
Step-by-step explanation:
There are a number of different forms of the equation of a line. A few are ...
y = mx + b . . . . slope-intercept form
y -k = m(x -h) . . . . point-slope form
x/a +y/b = 1 . . . . intercept form
ax +by +c = 0 . . . . general form
ax +by = c . . . . standard form
In "standard form", the coefficients a, b, c are mutually prime integers (have no common factors) and the leading coefficient (usually, 'a') is positive.
__
Given this graph, there are several ways to get to a standard form equation. Perhaps the quickest is to start with intercept form. We can see from the graph that the x-intercept is 4 and the y-intercept is -3. So, we can write the equation of the line in intercept form as ...
x/4 +y/(-3) = 1
Multiplying this by 12 clears the fractions and gives us standard form:
3x -4y = 12