A Solution of the equation,
3x2 + 2x + 1 = 0 is
Answer:
x = -3.5
Step-by-step explanation:
POE = PROPERTY OF EQUALITY
3*2 + 2x + 1 = 0
6 + 2x + 1 = 0 ## ^ Multiplication
7 + 2x = 0 ## ^ Combine like-terms
2x = -7 ## ^ Subtraction POE
x = -3.5 ## ^ Division POE
Answer:
X=0
Step-by-step explanation:
Use PEMDAS to get rid of some things. Do 3 x 2 = 6. Then distribute the like terms to one side seperating 2x and "0": +1 ---> 0-1 = -1. Now divide... 2x/2 = x (cancels out) and 0/2 = 0. Therefore X=0. But I'm not a computer so double check your answer.
Suppose 35% of students in a class have blue eyes. Five blue-eyed students join the class. Now 48% of the students have blue eyes. How many students were originally in the class?
Answer:
x : 35
x +5 : 48
35x+175=48x
175= 48x-35x
13x=175
x=175/13
x=13 students
Round 25,000 to the nearest thousand
Answer:
25,000
Step-by-step explanation:
Since there are no other numbers before the thousands place, it can be determined that the current thousands place will remain the same.
4 to 7 equals 21 to what
Answer:
Step-by-step explanation:
I dunno wether addition or multiplication, if it's multiplication, it would be 36.75 if it's addition, then it's 24
Unit 8 homework 2 special right triangles
Can anyone help me with this question please :( .
Answer:
I think it's non linear because the 1 to 1 wouldn't work
Can someone help me understand this
Answer:
Step-by-step explanation:
If we define the line QR to be some variable of distance 'x', we can use the relationship of cosine to figure out the length of QR.
Remember, cosine is adjacent of the angle divided by the hypotenuse of the angle. So, if we take this x value over the longest side (hypotenuse), we get the value of cos(theta).
cos(25) = x/7
Multiply both sides by 7 to get:
7*cos(25) = x
Let your calculator do the work to get:
x = 6.3
Need help pls help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
A y = 2x
Step-by-step explanation:
Find the number on Y - 2
then find the number for X - 2
then you get y = 2x
Answer:
B. y = -x + 2Step-by-step explanation:
Without calculations we can see that:
The graph is decreasing, so it has a negative slopeThe y-intercept is 2, point (0,2)This is matching the option B
y = -x + 2if 10 calculator cost £120 how much does 8 cost?
Answer:
1 calculator cost £12
120 divided by 10 = 12
now 8 x 12 = £96
8 calculators cost £96
Step-by-step explanation:
Answer:
£96
Step-by-step explanation:
If you have 10 calculators which cost £120, you just need to divide 120 by 10 which will give you 12. Since 8 is only 2 away from 10, you just need to times 12 by 2, giving you 24, then take that away from 10! Hope this helped!
5x−4y=34
−x+8y=22
elimination
Answer:
The solution to the system of equations is:
[tex]x=10,\:y=4[/tex]
Step-by-step explanation:
Given the system of equations
[tex]\begin{bmatrix}5x-4y=34\\ -x+8y=22\end{bmatrix}[/tex]
Multiply -x+8y=22 by 5: -5x+40y=110
[tex]\begin{bmatrix}5x-4y=34\\ -5x+40y=110\end{bmatrix}[/tex]
so adding the equations
[tex]-5x+40y=110[/tex]
[tex]+[/tex]
[tex]\underline{5x-4y=34}[/tex]
[tex]36y=144[/tex]
solve 36y = 144 for y:
[tex]36y=144[/tex]
divide both sides by 36
[tex]\frac{36y}{36}=\frac{144}{36}[/tex]
Simplify
[tex]y=4[/tex]
For 5x-4y=34 plug in y=4
[tex]5x-4\cdot \:4=34[/tex]
[tex]5x-16=34[/tex]
Add 16 to both sides
[tex]5x-16+16=34+16[/tex]
Simplify
[tex]5x=50[/tex]
Divide both sides by 5
[tex]\frac{5x}{5}=\frac{50}{5}[/tex]
Simplify
[tex]x=10[/tex]
Therefore, the solution to the system of equations is:
[tex]x=10,\:y=4[/tex]
You are buying a Lego set. Target has it listed for $34.99 which is 70% of the original price. What is the original cost of the Lego set? You are buying a Lego set. Target has it listed for $34.99 which is 70% of the original price. What is the original cost of the Lego set?
Answer:
Original price = $49.98
Step-by-step explanation:
Target has it listed for $34.99 which is 70% of the original price.
Let the original price be x.
ATQ,
[tex]70\%\ of\ x=34.99\\\\x=\dfrac{34.99\times 100}{70}\\\\x=\$49.98[/tex]
So, the original price of the Lego set is $49.98.
The functions g and h are such that g(x)=2x+5 and h(x)=ax+b
the answer is : a=9 and b=-1
Help!
Jesse bought a 340-gram bag of coffee beans. He uses 18.75 grams of coffee beans each day. When there are 40 grams of coffee beans remaining in the bag, Jesse will buy another bag to
make sure
he doesn't run out of coffee.
How many days can be use the 340-gram bag of coffee beans before he buys a new bag?
Answer:
Jesse should buy a new bag in 16 days.
Step-by-step explanation:
He uses 18.75 grams a day.
We can multiply the amount of grams by the amount of days.
18.75 x 16 = 300
He stops using the bag when he uses 300 grams.
So he uses 1 bag for 16 days
1 bag can last for 16 days.
Answer:
Jesse should buy a new bag in 16 days
Step-by-step explanation:
Sarah scooped out forty-three pieces of candy to buy at the store. She wants to divide the candy evenly among eighteen people. How many pieces of candy will each person get?
Answer:
43 / 8 = 5.37
Step-by-step explanation:
each person will get around 5 pieces of candies...
If f (x) = x2 and g(x) = x2–5x + 6, what is g (f (x)) ?
What is the value of x?
Answer:
x = 30 degrees
Step-by-step explanation:
Okay so we start by noticing that the two pointed out vertices = 180 degrees. So we have the following equation.
(x + 12) + (3x + 48) = 180
If you combine them you get:
4x + 60 = 180
Subtract 60 from both sides..
4x = 120
Divide both sides by 4..
x = 30
And there's your answer!
Find the area of triangle ABC.
Give your answer correct to 1 decimal
Answer:
let
a=9cm
b=8cm
c=10cm
Step-by-step explanation:
now
s=(a+b+c)/2=(9+8+10)/2=13.5
area of traingle=√(s(s-a)(s-b)(s-c))=√(13.5(13.5-9)(13.5-8)(13.5-10))=34.197cm²
can i plz get some help
*starts to calm* .....
Answer:
14
its math dude
answer
-8
explanation
3-(-8) = 11
add me as brainliest please
Select the correct answer.
What is the domain of the function shown in the graph?
Answer:
Step-by-step explanation:
Option B is the correct answer
Answer:
negative infinity < x < positive infinity
Step-by-step explanation:
Person above is correct
PLS HELP
PLSSSSSSSSSSS
Answer:
y=-15
.2020202020charactersneeded
Pls help answer asap
Answer:
x = 3
Step-by-step explanation:
3 ( x + 3 ) = 18
( 3 ) ( x ) + ( 3 ) ( 3 ) = 18
3x + 9 = 18
3x + 9 − 9 = 18 − 9
3x = 9
3x/3 = 9/3
x=3
I hope this helps you :D
Given that events A and B are independent with P(A) = 0.52 and
P(BA) = 0.35, determine the value of P(B), rounding to the nearest
thousandth, if necessary,
Answer:
3.5
Step-by-step explanation:
The scale on a drawing is 2:in:5yd. If a length on the drawing is 6 inches, what is the actual length.
Answer:
15 yards
Step-by-step explanation:
proportion:
2/5:6/X
2x=30
x=15
I USED ALL MY POINTS! PLEASE HELP ME ASAP!!!
Mrs. Jackson wants to tile a wall to serve as a splash guard above a basin in the basement. She plans to use equal-sized tiles to cover an area that measures 48 inches by 36 inches. She does not want to cut any of the tiles. What is the least number of tiles she could use?
Answer:
e
Step-by-step explanation:
50 and 40
Answer:
1728
Step-by-step explanation:
have a good day
Given that
a
= 13.2 m and
b
= 9.6 m, work out
x
.
Give your answer rounded to 1 DP.
The diagram is not drawn accurately.
Ordered pair ?
Isthis a function yes or no ?
expression for six minus b
Answer:
6-b
Step-by-step explanation:
I hope this helps, and have a great day! :D
H. M m m m m m m. M mm m m mm m m mmm m m. Mm m m mm m m m. Mmm m m m mm mm m m mm m mm
Answer:
-97.3 > -97.6
They're both negative, so the seemingly smaller number would be the larger one.
Your teacher is giving you a test that has 30 questions and is worth 200 points. Some questions are worth 5 points and some are worth 10 points. How many of each question are on the test?
Answer:
20 5-point questions and 10 10-point questions
Step-by-step explanation: