Step-by-step explanation:
(3x+3)(x+2)=
3x^2+6x+3x+6
=3x^2+9x+6
we get quadratic equation
find discriminant:
D=b^2-4ac=81-72=9
x=(-b±√D)/2a
x1=-6/6=-1
x2=-12/6=-2
one of the x values should be correct.
but why when I try to put values I get zero
PLEASE HELP WILL MARK BRAINLY
Answer:
Step-by-step explanation:
11 is B and 12 is B. 11 is B because perimeter means to add all the outside values of the shape. 2.5+5+4+1 and then there are two missing side values which are 1.5 and 1, add them all together and the perimeter is 15. For the area, separate the small square with the big rectangle to have two full shapes. The area of the rectangle is 4x2.5=10. Area of the small square is 1x1=1. 10+1=11. Hope this helps, ask questions if you need to
Find the value of X, Y, Z
Answer:
Answers are in photo
Step-by-step explanation:
Do it in terms of ratio
The temperature in one northern city was -12°F and in a southern city was 57°F. How much warmer
was the southern city than the northern city?
Answer
69°F
Because
12+57=69
help Solving Exponential Functions
Step-by-step explanation:
4) p(x)=256
p(x)=2 ^ x+2
256=2 ^ x+2
2⁸= 2 ^ x+2
8=x+2
x=8-2=6
5)243=3 ^ x+3
3×3×3×3×3 = 3 ^ x+3
3⁵= 3^ x+3
5 = x+3
x=5-3=2
Answer:
[tex]p(x) = 256 \\ p(x) = {2}^{(x + 2)} \\ {2}^{(x + 2)} = 256 \\ {2}^{(x + 2)} = {2}^{8} \\( x + 2) = 8 \\ x =( 8 - 2) \\ \boxed{x = 6}[/tex]
x=6 is the right answer.[tex]243 = {3}^{(x + 3)} \\ {3}^{(x + 3)} = {3}^{5} \\ (x + 3) = 5 \\ x = (5 - 3) \\ \boxed{ x = 2}[/tex]
x=2 is the right answer.AB is parallel to CD
Find the value of X
Find the value of Y
Answer:
∠y° = ∠69°
∠x = ∠69°
Step-by-step explanation:
1) The question relates to parallel line theorem
The given parameters are;
AB is parallel to CD
∠111° and ∠y° are consecutive interior angles
∠69° and ∠x° are alternate interior angles
When two parallel lines are crossed by a common transversal, the consecutive interior angles are supplementary (sum up to 180°), and the alternate interior angles are equal
Therefore, we have;
∠111° + ∠y° = 180°
∠y° = 180° - ∠111° = ∠69°
∠y° = ∠69°
2) For the alternate interior angles, ∠69° and ∠x°, we have;
Alternate angles are equal, therefore ∠x = ∠69°
I need the reflection on this one
what is the graph of 3x+5y=-15?
Answer:
Root: (-5,0)
Vertical Intercept: (0,-3)
m = -3/5
b = -3
Step-by-step explanation:
Try this!
Arrange the following set of numbers in increasing and decreasing orders.
1.{3, -4, 0, 6, -2}
2.{2.5, 0.3, 5.25, -0.7, 1.2}
3. {2, 0.8 -√8, -4.7, 6⅓}
Decreasing:____________
Increasing:____________
Decreasing:____________
Increasing:____________
Decreasing:____________
Increasing:____________
all time let us have a review about your past topic about multiplying numbers by power of 10
1. 0.042 x 10=
2. 7.331 x 100=
3 0.125 x 1000 =
4. 1.031 x 0.1=
5. 21.5 x 0.001 =
need now
:plss wag nyu na ih answer kung mali rin ih answer nyu huhh!
Answer:
23446
76532
12839
09192
29292
help Math 39 points Asap Probability image below
Answer:
1/10
Step-by-step explanation:
There are 3 reds and 2 blues. He picks one and then another with no replacement. ? of getting 2 blues.
There are five marbles altogether.
First is 2/5
The second blue is 1/4
The chance of them both being blue is 2/5 * 1/4 = 2/20 = 1/10
g(a) = –2a^2 – 2; Find g(-4n)
Answer:
choose last option.
Step-by-step explanation:
Given
g(a) = - 2a² - 2
g(-4n) = - 2 ( -4n) ² - 2
= -2 * 16n² - 2
= -32n² - 2
Please help!!!! Needs to be answered soon!
Answer:
This is NOT a graph :)
Step-by-step explanation:
multiple x^2/3•x^1/5
The mean of 5 numbers is 6.
The numbers are in the ratio 1 : 3 : 3 : 4 : 4.
Find the numbers.
Answer:
2, 6, 6, 8, 8
Step-by-step explanation:
First, we know that the mean is the sum of the number divided by the amount, so if we take the answer we have, 6, and multiply that by the amount of number, 5, then we get 30.
Now we add the numbers in the ratio, so 1 + 3 + 3 + 4 + 4 = 15
15 x 2 = 30
This means we need multiply the numbers in the ratio by 2 to get
2 + 6 + 6 + 8 + 8 = 30
Answer:
2, 6, 6, 8, 8
Step-by-step explanation:
The mean is calculated as
mean = [tex]\frac{sum}{count}[/tex], thus
[tex]\frac{sum}{5}[/tex] = 6 ( multiply both sides by 5 )
sum = 30
sum the parts of the ratio, 1 + 3 + 3 + 4 + 4 = 15 parts
30 ÷ 15 = 2 ← value of 1 part of the ratio, thus
3 parts = 3 × 2 = 6
4 parts = 4 × 2 = 8
Thus the 5 numbers are
2, 6, 6, 8, 8
Final question please almost done
Answer:
ill say 75.00
Step-by-step explanation:
Darron bought a new PS5. He made a down payment of $300, and he will pay $50 each month until the phone is paid off. Which equation represents the relationship between x, the number of monthly payments Darron has made, and y, the total amount he has paid?
A. y= 50x + 300
B. y= -50x + 300
C. x= 50y + 300
D. y= 50x – 300
Answer:
A
x=months y=total payment
vote brainliest
Choose the fraction below that would make the following proportion true.
2/3 = ?/?
A. 2/5
B. 6/9
C. 4/5
D. 8/9
hey can someone please please please help me asap?!
Answer:
slope=1
Step-by-step explanation:
Rise/Run
I really help with this ill mark u brainliest pls
Answer:
[tex] m\angle XYW = (155 - 20x
)\degree [/tex]
Step-by-step explanation:
[tex]m\angle XYZ= m\angle XYW +m\angle WYZ\\\\
150\degree = m\angle XYW +(20x-5)\degree \\\\
150\degree - (20x-5)\degree = m\angle XYW \\\\
(150 - 20x
+5)\degree = m\angle XYW \\\\
(155 - 20x
)\degree = m\angle XYW \\\\
m\angle XYW = (155 - 20x
)\degree \\\\
[/tex]
Giving brainly and points
Answer: B) −8x − 9
Step-by-step explanation:
5 − 2 (4x + 7)
Apply the distributive property.
5 − 2 (4x) − 2 ⋅ 7
Multiply 4 by −2.
5 − 8x − 2 ⋅ 7
Multiply −2 by 7.
5 − 8x − 14
Subtract 14 from 5.
−8x − 9
hope this helps :)
Answer:
b
Step-by-step explanation:
5-2(4x+7)
distribute
-8x-14
5-8x-14
5-14=-9
-8x-9
Which expression is equivalent to21^3 sqrt15 - 9^3 sqrt 15 ?
A.12
B.30^3 sqrt 15
C.12^3 sqrt 5
D.12^3 sqrt 15
I have tried to complete this And I get stuck like 15 mins into it.
Answer:
D.12^3 sgrt 15
Sana makatulong
The expression that is equivalent to the given expression is 12√15. Option D is correct.
Given that,
Which expression is equivalent to 21√15 - 9√15 is to be determined.
In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication and division,
What is simplification?The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
Here,
According to the question,
= 21√15-9√15
= (21 - 9 )√15
= 12√15
Thus, the expression that is equivalent to the given expression is 12√15. Option D is correct.
Learn more about arithmetic here:
https://brainly.com/question/11559160
#SPJ2
14) Mr. Johnston has between 25 and 30 students each class period. The
principal told Mr. Johnston to expect a 25% increase in class size for the
upcoming school year. Based on this information, which best describes the
number of additional students Mr. Johnston can expect in each class?
1 of 5
© Angad and Nick win some money and share it in the ratio 5:1. Angad gets £60 more than Nick.
How much did Nick get?
Answer:
£15
Step-by-step explanation:
Angad : Nick = 5 : 1
Let
Nick share = x
Angad share = x + £60
Angad : Nick
5 : 1 = x + £60 : x
5/1 = x + 60 / x
Cross product
5 * x = 1 * x + 60
5x = x + 60
5x - x = 60
4x = 60
x = 60/4
x = 15
Nick get £15
pleasee help !!! finding equation of the image
Answer:
A
Step-by-step explanation:
Here, we want to write the final formula for the equation after performing the given transformations
Reflection on the y-axis means the x-axis value will change sign
that will give:
y = -x^1/3
Transition of 3 units in the positive x axis
mathematically, we are adding 3 to x
so we have
y = -(x+3)^1/3
4 units in the negative y direction means we are subtracting 4 from the whole equation
That means;
y = -(x + 3)^1/3 - 4
This shows that the first option is right
need help asap please
Answer:
1.06
Step-by-step explanation:
18Y + 6 = 25 [given]18Y = 19 [subtract 6 from both sides]Y = 19/18 [divide both sides by 18]To the nearest hundredth, the answer is 1.06.
CAN SOMEONE PLEASE HELP ME??
Answer:
3,-2 5,-3 2,1
Step-by-step explanation:
all the points in the shaded region are the right answer
The figure shows a line graph and two shaded triangles that are similar:
Which statement about the slope of the line is true?
Group of answer choices
A. It is fraction 1 over 2 throughout the line.
B. It is 2 throughout the line.
C.The slope from point O to point A is fraction 1 over 2 time the slope of the line from point A to point B.
D.The slope from point O to point A is two times the slope of the line from point A to point B.
Answer:
A
Step-by-step explanation:
You can use the formula change in y divided by change in x, so for this the change in y would be 2 and the change in x would be 4. This means the slope is 1/2.
In a line, the slope never changes so it's A.
1. Jacob has $500 saved. He receives a gift of $100 as a graduation present.
Write an expression for the total amount of money he has.
Can you help? Please :)
At Martin Luther King Jr. High School 7 out of 9 students voted to plant trees at the front of the school. A total of 119 voted to plant the trees. How many students voted?
A. 153
B. 272
C. 128
D. 135
Answer and Step-by-step explanation:
To solve, you first divide 7 by 9.
Then, you divide 119 by 7/9.
[tex]\frac{7}{9} = 0.777777777777\\\\\frac{119}{0.77777777777} = 153.\\\\[/tex]
To check your work, divide 119 by 153, and you will get 0.777777777777, which is the same as 7 divided by 9.
So, the answer is A. 153
#teamtrees #WAP (Water And Plant)
Answer:
A
Step-by-step explanation:
I divided 119 by 7 which is 17. Then multiplied that by 2 because theres a gap of 2 between 7 and 9 and got 34. lastly added 119 by 34 and got 153. (Sorry if I got it wrong)
10 boys clear a piece of land in 21 days. How many days will it take 7 boys to clear the same land at the same rate
Pls i need answer fast
Given:
10 boys clear a piece of land in 21 days.
To find:
The number of days it will take 7 boys to clear the same land at the same rate.
Solution:
We have,
10 boys clear a piece of land in 21 days.
Total work = [tex]10\times 21[/tex]
= [tex]210[/tex]
Let 7 boys clear the same piece of land in x days.
Total work = [tex]7\times x[/tex]
= [tex]7x[/tex]
Now, the total work is same.
[tex]7x=210[/tex]
Divide both sides by 7.
[tex]x=\dfrac{210}{7}[/tex]
[tex]x=30[/tex]
Therefore, 7 boys clear the same piece of land in 30 days.
When you have the base currency, what is the operation to do the conversion?
To convert from the base currency, we multiply by the exchange rate. Just like multiplying to apply a commodity price. Indeed, our base currency can be viewed as the commodity in the quote. Say we need to convert €8m into dollars, by applying the exchange rate EUR/USD 1.25.