Answer:
2x+3y+5=0
a = 2 b = 3 c=5
Step-by-step explanation:
We are asked to express 2x+3y=-5 in the form ax+by+c=0
Add 5 to both sides
2x+3y+5=0
We can now find the values of a, b and c now that the equation is in standard form.
On the second day of a hiking trip the tourist covered a 17% bigger distance than on the first day . By how many percent of their average speed change from the first to the second day if on the second day they were hiking for a 20% longer time
Answer:
2.5%
Step-by-step explanation:
x=distance y=time
x has been increased by 17%
100%+17% = 117%
y has been increased by 20%
100%+20%=120%
Now let's make the percentages into decimals. 117%=1.17 120%=1.2
To find the average speed you do the distance traveled divided by the time taken.
Average speed = 2.5%
Henry received $500 for his birthday which he intends to invest in an account that pays simple interest at the rate of 12% per year. How much will be in the account
Answer:
$560
Step-by-step explanation:
Given that :
Principal, P= $500
Interest rate, r = 12% per year
Amount in account after 1 year
Time = 1 year
Using the relation :
A = P(1 + rt)
A = final amount in account
A = $500(1 + 0.12(1))
A = $500(1 + 0.12)
A = $500(1.12)
A = $560
In an experiment , the temperature of a solution is -5/8 degrees. The temperature drops 1 1/2 degrees. What is the temperature after the drop?
Answer:
- 2 1/8 degrees
Step-by-step explanation:
Given
Initial temperature of a solution = -5/8 degrees
Amount drop = 1 1/2 degrees
Temperature after the drop = -5/8 - 1 1/2
Temperature after the drop = -5/8 - 3/2
Temperature after the drop = -5-12/8
Temperature after the drop = -17/8
Hence the temperature after the drop is - 2 1/8 degrees
A right-angled triangle has sides of lengths (x+5)cm, (x-3)cm and 9cm. Calculate the value of x. Give your answer to 3 significant figures. (Quadratic Formula)
Answer:
x = (3.95 and -5.95)
Step-by-step explanation:
Given:
Hypotenuse = 9 cm
Perpendicular = (x+5) cm
Base = (x-3) cm
Find:
Value of x
Computation:
Using Pythagoras theorem
Hypotenuse² = Perpendicular² + Base²
9² = (x+5)² + (x-3)²
81 = x² + 25 + 10x + x² + 9 - 6x
2x² + 4x - 47 = 0
Quadratic Formula
x = [-b±√b²-4ac] / 2a
x = [-4±√16+376] / 2(2)
x = (3.95 and -5.95)
[tex]y = |x + 2| [/tex]
What is thw Domain and the Range
The domain is the x value and the range is the y value.
Because x is a variable it can be any real number so the domain would be negative infinity to infinity.
Because the domain is negative infinity to infinity, then the range is also negative infinity to infinity.
PLEASE HELP ASAP!! will mark brainliest!!
What is the equation of the line shown in this graph?
Step-by-step explanation:
The line is a horizontal line of the form y = a, where a is a real constant.
Since the line passes through the points (-4, 1) and (2, 1) with y-values of 1,
Equation of the line: y = 1.
MATHHHHHH I NEED HELP PLEASE!!!!!
Answer:
so at (0,20) she spent all the money on (20) orange juice and 0 coffee
then at (15,0) she spent all the money on (15) coffee and 0 orange juice
Step-by-step explanation:
What is the percent change from 6,000 to 9,000
Answer: 50% would be the correct answer.
R1 - Writing and using formulae
Miss Joplin is planning the resources for a maths lesson.
She needs...
1 ruler per pupil plus 4 spare
5 pieces of dondy paper per pupil
. 5 pieces of card per pupil plus 7 spare.
V=
Write down formulae for the number of rulers (r)
and the amount of dotty paper (d) and card (c).
Jse p for the number of pupils.
d =
c =
[6]
Answer:
im trying to do a challenge because this kid deleted all my answers
Step-by-step explanation:
Of the students at Milton middle school 171 are girls if 45% of the students are girls how many total students are there at milton middle school
Answer:
380
Step-by-step explanation:
171:45=3,8
3,8*100=380
College essay for UC Santa Barbara has to be 500 words long but the actual essay can vary by as much as 20 words. Write an absolute value inequality that could find the range of possible number of words for the essay.
|x - 20| ≤ 500
|x + 20| ≥ 500
|x + 500| ≥ 20
|x - 500| ≤ 20
Answer:
|x - 500| ≤ 20
Step-by-step explanation:
8
9
16
18
24
27
36
32
45
Which number completes the table of equivalent ratios?
A)
38
B)
40
o
42
D)
44
Answer:
40
Step-by-step explanation:
...... ...... ...... ..... .
Can you help me please
Answer:
a)x=5 b)x=4
Step-by-step explanation:
a)9.5×2=19
3x+4=19
19-4=15
15÷3=5
x=5
b)5×3=15
7+2x=15
15-7=8
8÷2=4
x=4
hope this helps
I need an answer really quick.
Answer:
Switch to the other streaming service
Step-by-step explanation:
So, 96$ with a 12% increase is $107.52.
But if you do 8.75×12 you get $105.
So Clare should switch to the other music stream.
can somebody solve 2 and 3 for me?
Answer:
2. D) 275
3. C
Step-by-step explanation:
2. 20 divided by 10 = 2
550 divided by 2= 275
3. 35 times 8= 550$
1 month is 35$
2 months is 70$ (35+35)
4 months is 140$ (70+70)
6 months is 210$ (140+70)
HOPE THIS HELPS!!!
Answer:
2. D) 275
3. C
Step-by-step explanation:
2. 20 divided by 10 = 2
550 divided by 2= 275
3. 35 times 8= 550$
1 month is 35$
2 months is 70$ 35+35
4 months is 140$ 70+70
6 months is 210$ 140+70)
In Hawaii a volcano is about to explodel At 6:00 am a device placed inside the volcano
measures the temperature at 69.5 degrees Celsius. Every 3 minutes the temperature
rises 1/5 a degree. If the Volcano explodes at 1455 degrees Celsius how many hours do
they have to evacuate a nearby city?
Will Mark BRAINLIEST to the correct answer
Complete question :
In Hawaii a volcano is about to explodel At 6:00 am a device placed inside the volcano
measures the temperature at 69.5 degrees Celsius. Every 3 minutes the temperature
rises 1/5 a degree. If the Volcano explodes at 145.5 degrees Celsius how many hours do
they have to evacuate a nearby city?
Will Mark BRAINLIEST to the correct answer
Answer:
19 hours
Step-by-step explanation:
Given that:
Temperature of volcano at 6:00 am = 69.5°C
Average rise in temperature per 3 minute = 1/5
Hence, rise in temperature per minute = 0.0666666°C
Temperature at which volcano will explode = 145.5°C
Hence, change in temperature :
(145.5°C - 69.5°C) = 76°C
Hence, temperature will have to rise by 76°C
Rise in temperature / rate of temperature increase
= 76°C / 0.0666666°C
= 1140.0011 minutes
= 1140.0011 / 60
= 19.0000019 hours
= 19 hours
NEED ANSWER ASAP PLEASE!! WILL GIVE BRAINLIEST
The number of weekly social media posts varies directly with the square root of the poster's age and inversely with the cube root of the poster's income. If a 16-year-old person who earns $8,000 makes 64 posts in a week, what is the value of k?
Answer:
k= 320
.................
Which values represent solutions to cos
$(# - x) =
sin x, where x € (0,21)?
(0.7)
0 (0.3
Answer:
C option
Step-by-step explanation:
C is the correct solution of to above equation
simplify the expression
Answer:
24/64..........................
Step-by-step explanation:
hope this helped
PLS HELP ME ILL GIVE BRAINLIEST
Answer:
D
Step-by-step explanation:
y is greater and equal than -6 because 13-19=-6
How many minutes are there in 4 1/4
hours?
mins
Pls help
Answer:
255 minutes
Step-by-step explanation:
OK PLEASE HELP ME. IVE BEEN TRYING TO REMEMBER HOW TO SOLVE THIS BUT IM FIND IT IT REALLY DIFFICULT
Quadrilateral JKLM has vertices J(–7, –2), K(–2, –2), L(–3, –4), and M(–6, –4). Find the midpoints of each of the sides JM and KL.
Step-by-step explanation:
X-value of Midpoint of J(-7, -2) and M(-6, -4)
= [(-7) + (-6)] / 2 = -6.5.
Y-value of Midpoint of J(-7, -2) and M(-6, -4)
= [(-2) + (-4)] / 2 = -3.
X-value of Midpoint of K(-2, -2) and L(-3, -4)
= [(-2) + -3)] / 2 = -2.5.
Y-value of Midpoint of K(-2, -2) and L(-3, -4)
= [(-2) + (-4)] / 2 = -3.
We have (-6.5, -3) and (-2.5, 3).
The correct answer is Option D.
OMG HELPPPPPP!!!!!!!!
Graph the line with slope 2 passing through the point (1, -3).
?.
be
-0
OX
6
8
10
Answer:
2x-5=y
I'm not sure how your graphing tool works so I'll give you five or so coordinates
(-1,-7)
(1,-3)
(0,-5)
(2,-1)
(-2,-9)
Step-by-step explanation:
You first need to write an equation that you can graph
Knowing that the slope is two we can write the following equation
2x+b=y
We also know that when x=1 y=-3
This gives us 2*1+b=-3
which means that 2+b=-3
subtract 2 from both sides to figure out the b=-3
This means that the line you have to graph is 2x-5=y
A town manager reports that revenue for a given year is $563,878. The budget director predicts the revenue will increase by 7% per year. How much revenue will the town have available in 6 years? (round to the nearest cent)
Answer:
below
Step-by-step explanation:
the yearly multiplier
= 1.07
After 6 years revenue wii, b 563878 * 1.07^6
= $846,228.83.
PLEASE HELP AM BEING TIMED
The value of W is:
The value of X is:
PLEASE HELP ILL GIVE BRAINLIEST !!!
Answer:
a. y=-3/2x-7
Step-by-step explanation:
First, you make the equation into slope intercept form, which is y=2/3x-3.
Then, because its perpendicular, the slope turns negative and upside down, so its -3/2, and then you insert the point (4, -1) to get the y intercept, which is -7. So you're answer is a.
(hope this helps :P)
What is the value of x?
A right angle is shown divided into two parts. The measure of one part of the right angle is 30 degrees. The measure of the other part is 4x.
15
30
45
60
Answer:
x = 15
Step-by-step explanation:
We are told that a right angle is divided into two parts
A right angle = 90°
Part A = 30°
Part B = 4x
Hence:
30° + 4x = 90°
Collect like terms
4x = 90° - 30°
4x = 60°
4x = 60/4
x = 15
Therefore, the value of x = 15
Answer:
ITS 15!!!!!! :))))
-4x+50<58−8x+44≥60 AND−4x+50<58
Solve for x
Answeridek
Step-by-step explanation:
PLEASE HELP ME I’M REALLY FAR BEHIND IN MATH! I’LL MARK BRAINLIEST! (Looks at picture)
Answer:
x=1
Step-by-step explanation:
4x+5=9
-5 -5
4x=4
4/4
=1
x=1
Answer:
x=1.......
Step-by-step explanation:
Your welcome