Factorise 3x²+5x-12
Show working out
hi <3
i'm not sure of which method you will have been taught but i'll try to explain the method i was shown.
so, you need to multiply the coefficient of x^2 by the last value
3 x -12 = -36
now, you need to find two values that multiply to make -36 but add to make 5.
9 and 4 would work. it would have to be positive 9 and negative 4, as these would subtract to give the 5 that you need
now we have:
(x - 4)(x + 9)
however, we need to achieve the 3 from somewhere so it needs to be divided somewhere
9 is divisible by 3 so you can divide it there. as 4 cannot divide by 3, you would move the 3 up to be the coefficient.
thus, your final answer would be:
(3x - 4)(x + 3)
hope this helps :)
Answer:
it's gonna be 3(X*2 + 4X - 4)
Step-by-step explanation:
Just factor out 3 from the expression
Rewrite the equation in slope-intercept form. Then identify the slope and the y intercept of the line
4x + y = 1
Answer:
see explanation
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Given
4x + y = 1 ( subtract 4x from both sides )
y = - 4x + 1 ← in slope- intercept form
with slope m = - 4 and y- intercept c = 1
Solve the equation:
5 + 4x - 7 = 4x - 3-X
Answer:
1 = -x
Step-by-step explanation:
group like terms together so
this 5 + 4x - 7 = 4x -3 - x
becomes this 5 - 7 + 3 = 4x -4x -x
then simplify 1 = - x
Tom drives at a steady speed covering 1 mile every minute. He comes to a
section of road where the speed limit is 50 mph.
Is he over the speed limit? Give a reason for your answer.
Answer:
Yes he is over the speed limit.
Step-by-step explanation:
1 mile per minute * 60 minutes (1 hour) = 60 miles per hour
60 > 50
Members of a baseball team raised $1781.25 to go to a tournament. They rented a bus for $1063.50 and budgeted $65.25 per player for meals. Write and solve an equation which can be used to determine x x, the number of players the team can bring to the tournament.
Answer:x=11
65.25x + 1063.50= 1781.25
To solve this equation, subtract the rental cost of the bus to get $717.75.
Now the equation should be 65.25x= 717.75
Divide both sides by 65.25, and you should get that x = 11. That’s your finally answer!
Step-by-step explanation:
What is Pt=3x+4 and tq=5x-6
I know the answer, I'm just confused on what to put for explore, plan, solve, and examine!
Joseph earned $53 the first week he worked at Jim’s Candy Store and $62 the next week. How much did Joseph earn his first two weeks?
Explore:
Plan:
Solve:
Examine:
Answer:
Explore - ??? (What are you suppose to put for that (Add comment))
Plan - First week - 53 Second week - 62
Solve - 53 + 62 = 115
Examine - (Use a graph to see the rise?)
Step-by-step explanation:
please help me! will mark brainliest
k = -2
√-72k = √(-72 · (-2)) = √144 = √12² = 12
Hannah but 3.4 pounds of apples she paid $.89 per pound how much did Hana pay for apples
Answer:
3.026 $
Step-by-step explanation:
3.4 × 0.89 = 3.026 $
Pleaseeeeeeeeeeeeeeeeeeee
Answer:
∠DAB = 68
Step-by-step explanation:
∠DAB we need to find this
∠DAB = ∠C (vertically opposite angles are equal)
∠DAB = 68
What is the product of (7/8 ) (-16) (-7) (-1/14)
A . -7
B . - 9/16
C . -1/7
D . 23/12
Answer:
I believe its A.
Step-by-step explanation:
The sum of 48 and itself,it's half and half of the half is added to 18
Decide!!!!!!!!!!!!!!
Answer:
547Step-by-step explanation:
The minute hand hits the 0 minute once each hour. This results each hour to become 61 minutes.
Number of hours from Monday 00:01 to Friday 07:30 is 4*24 + 7.5 = 103.5
Extra time considering defective clock (full hours):
103 minutes = 1 hr and 43 minAlarm to be set at:
07:30 - 1:43 = 6:00 - 0:13 = 05:47The answer is:
5*100 + 47 = 547Help me please i don’t have my notes and I forget how to do this
Answer:
AC = AB + BC
18 = (2X - 4) + (3X + 2)
18 = 5X - 2 ( add/subtract like terms)
20 = 5X (-2 take over otherside - 18 + 2)
X = 4
SUB X INTO AB AND BC
AB = 2(4) - 4 = 4
BC = 3(4) + 2 = 14
plsss helpppp will mark brainliest!!
Answer:
D. 2¹⁵/4¹⁰
Step-by-step explanation:
(2³/4²)⁵ = 1/64
A. 2⁸/4⁷ = 1/128
B. 2⁵/4⁴ = 1/16
C. 2⁶/4⁶= 1/128
D. 2¹⁵/4¹⁰= 1/64
SO (2³/4²)⁵ = 2¹⁵/4¹⁰
The graph of y = f(x) is graphed below. What is the end behavior of f(x) ?
Answer:
The first option, as x approaches infinity, y approaches infinity and as x approaches negative infinity, y approaches negative infinity
Step-by-step explanation:
Find the surface area of the following solids.
4.5 m
4.5 m
45 m
Answer:
4.5*4.5*45=911.25
is this correct answer
Find X. I need help ASAP pls
Answer:
Step-by-step explanation:
I really need help with this math problem and please explain (-1) + (-2 2/5) =
Answer: -3 2/5
Step-by-step explanation:
When both integers are negative, you can treat them the same as positive numbers and add a negative sign to your final sum.
1+2 2/5 (or 2 4/10 or 2.4) is equal to 3 2/5. So (-1)+ (-2 2/5) is equal to -3 2/5, or -3.4.
The ascending arrangement of 2/3 , 6/7 , 13/21 is
Answer:
[tex] \frac{13}{21} , \: \frac{2}{3} , \: \frac{6}{7} [/tex]
I need help please!!
Answer:
(-2, 3)
Step-by-step explanation:
For x-4 you go left four places and y+6 go up 6 places
Answer:
(-2, 3)
Step-by-step explanation:
Point P has coordinates (2, -3).
The translation is (x - 4, y + 6) which means subtract 4 from the x-coordinate and add 6 to the y-coordinate.
The x-coordinate of point P is 2. Subtract 4 from it, you get -2.
The y-coordinate of point P is -3. Add 6 to it to get 3.
The coordinates of the translated point are (-2, 3).
abc is a triangle in which ab=5cm, ca=13cm and bc=12 cm. calculate sina, cosc, tana, cotc, seea and cosec
Probability maths Please help
Answer:
it means maybe or either
Emma had 10 Balls in a bag. The balls were numbers 1 through 10. She wanted to test the probability of drawing a ball that is a multiple of 3.
Also, write a prediction about if there is an unlikely, impossible, likely, even, or certain change of drawing a multiple of 3.
Answer:
30%UnlikelyStep-by-step explanation:
The balls - multiples of 3 are:
3, 6 and 9The probability of a multiple of 3 is:
3 out of 10 orP = 3/10 = 30%30% probability is in the range 0%-50% so this event is unlikely
Total multiples=3
[tex]\\ \sf\longmapsto P(3)=\dfrac{Multiples\:of\:3}{Total \:balls}[/tex]
[tex]\\ \sf\longmapsto P(3)=\dfrac{3}{10}[/tex]
[tex]\\ \sf\longmapsto P(3)=30\%[/tex]
It is <50%;So it is unlikely to happen.
6.004x10^5 in standard notation
Answer:
600400
Step-by-step explanation:
5x -4= 4x please help me
[tex]5x-4=4x\\\\5x-4x=4\\\\\huge\boxed{x=4}[/tex]
Answer:
4=x
Step-by-step explanation:
5x-4=4x
-4=-x
4=x
GIVING BRAINLY
Collect data by conducting a survey that has observations or measurements.
My Topic:
My Question:
My Data Collection Method:
How I Plan to Collect My Data:
How I Plan to Record My Data:
Collect and record your data in this space.
help with number 4!!!!!!
Answer:
he have to travel 12 cm/km
Step-by-step explanation:
lets find x by transposing
3x = 2x + 2 (as M is the midpoint)
3x - 2x = 2
x = 2
now put 2 instead of x
3x + 2x +2 = (distance from friends home to house)
3 (2) + 2 (2) +2
6 + 4 + 2
10 + 2
= 12
unit rate 18 people in 3 vans
Answer:
6:1
Step-by-step explanation:
6 people per van
Answer:
6:1
Step-by-step explanation:
what is 9.58333333333 as a fraction?
Answer:
If you pacifically asking for the fraction 115/12
Step-by-step explanation:
I also looked on mathw it helps
