An equation and the first step in its solution are shown.
Equation: x2 + 3x – 9 = 0
Step 1: x2 + 3x + h = 9 + h
What value of h is used to solve the equation by the method of completing the square?
Answer:
The answer is either 1.5 or 0.667
Step-by-step explanation:
x2+3x-9=0
x2+3x=9
6x=9
x=1.5
or
x=667
the value of 'h' used to solve the equation by completing the square method is [tex]\frac{9}{4}[/tex]
Given :
An equation and the first step in its solution are shown.
Equation: [tex]x^2 + 3x -9 = 0[/tex]
Step 1: [tex]x^2 + 3x + h = 9 + h[/tex]
In completing the square method , we take the coefficient of x and divide it by 2 and then square it
coefficient of x is 3
divide it by 2 , so we get [tex]\frac{3}{2}[/tex]
Then we square it [tex](\frac{3}{2} )^2\\\frac{9}{4}[/tex]
Then we add it on both sides of the equation
[tex]x^2 + 3x + \frac{9}{4} = 9 + \frac{9}{4}[/tex]
So, the value of 'h' used to solve the equation by completing the square method is [tex]\frac{9}{4}[/tex]
Learn more : brainly.com/question/10662834
Simplify these expressions:
5c + 1/2 ( 3/4-2/3c)
1 2/5m - 3/5 (2/3m + 1)
6/7x - 2/5y + 5/7 (y+x)
Answer:
1st: 5c+3/8-1/3c
3/8-14/3c
2nd: 12/5m-2/5m-3/5
m-3/5
3rd: 6/7x-2/5y+5/7y+5/7x
11/7x+3/5y
Step-by-step explanation:
Plz i need brainliest
Will mark Brainlist! Please answer!
Answer:
5%
Step-by-step explanation:
Please mark as brainliest. I'm happy to help
Answer: it’s 5%
Step-by-step explanation:
more brinliest if its right :D im horrible at math
Answer:
No
Step-by-step explanation:
because the unit rate is 6 miles per hour for the first one and 10 miles per hour for the second
Answer:
They are not
Step-by-step explanation:
This is because:
The first one has 6 miles every one hour
The second one has 10 miles every one hour
What should the following rate be divided by to convert it to a unit rate?
Answer:
12
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
Marni has 11 ounces of walnuts. She needs 6 ounces for one recipe and \frac {1}{4}41 pound for another. There are 16 ounces in 1 pound.
How many ounces of walnuts does Marni need to make both recipes? Show your work.
Answer:
164
Step-by-step explanation:
Multiply
Answer:
1/4
Step-by-step explanation:
.
Find the rate of change
Answer:
Step-by-step explanation:
6
Answer:5.5
Step-by-step explanation:
The zoo has a snake that is 3 5/6 feet long. It has an iguana that is 3/4 of the length of 5 points
the snake. How long is the iguana ?
Answer:
2 8/24
Step-by-step explanation:
Answer:
2 8/24
Step-by-step explanation:
help please !
Olivia works at a bakery. She makes $45 per day, plus $7 for each cake she decorates. She wants to make at least $110 per day. How many cakes will she need to decorate?
If c is the number of cakes that Olivia (from the problem above) decorates, which inequality will find the solutions to this problem?
Answer:
She will need to bake about 9.3 cakes per day so the inequality would be c>/= (110-45) divided by 7 or C is greater than or equal too 9.3
Step-by-step explanation:
Plss help I need plsss I begging u
Answer:
60
Step-by-step explanation:
I am such an idiot
Today is the finals
The value of a house has increased by 6%.
The house then had a value of £256,000
Work out the value of the house before the increase.
Answer:
£241,509.43 (nearest penny)
Step-by-step explanation:
100% + 6% --- £256,000
106% --- £256,000
100% --- [tex]\frac{100}{106}[/tex] × £256,000 = £241,509.43 (nearest penny)
Answer:
£241,509.43
Step-by-step explanation:
100% + 6% --- £256,000
106% --- £256,000
100% --- × £256,000 = £241,509.43
What is the sun's diameter in scientific notation
Answer:
1.391×10^6 km.
answer is second one
Answer:
(2nd answer) 1.391 × 10⁶
Step-by-step explanation:
Diameter: 1,391,000
Scientific Notation: 1.391 × 10⁶
What is an estimate of the value 0.00030301 as a product of a single digit and a power of 10?
Answer:
4936 anything else you need me to falling inlove with you
help please i give brainliest
Answer:
X+296=285
X=-11
Original= 11 feet below sea level
Determine if the graphed function is linear or nonlinear.
Select from the drop down menu to correctly complete the sentence.
The graphed function is
hi im tryna turn in a missing assignment and i need help-
i will give brainliest
Answer:
4 m because I put it on procreate and put tics on the 12 m to see how much each m was and measured x with that
n+5/16=-1
Solve for n
I will reward Brainliest
Answer:
Step-by-step explanation:
+
5
1
6
=
−
1
n+\frac{5}{16}=-1
n+165=−1
Solve
1
Subtract
5
1
6
\frac{5}{16}
165
from both sides of the equation
+
5
1
6
=
−
1
n+\frac{5}{16}=-1
n+165=−1
+
5
1
6
−
5
1
6
=
−
1
−
5
1
6
n+\frac{5}{16}{\color{#c92786}{-\frac{5}{16}}}=-1{\color{#c92786}{-\frac{5}{16}}}
n+165−165=−1−165
2
Simplify
Solution
=
−
2
1
A company that makes hair-care products had 3,000 people try a new shampoo. Of the 3,000 people, 12 had a mild allergic reaction. What percent of the people had a mild allergic reaction?
Answer:
0.4%
Step-by-step explanation:
12/3,000 = 2/500 = 0.4%
Hope this helps! :3
plz mark as brainliest!
Solve the system of equations by substitution. Write your solution as an ordered pair
x+2y=-2
y=-2+11
Answer:
hello
Step-by-step explanation:
djh;vkajhkjbcbvusiwihalkjfbih
Water is filling a swimming pool at a rate of 7 gallons per minute. Complete the table of equivalent ratios for the first 5 minutes of the swimming pool filling up.
Answer:
1:7 2:14 3:21 4:28 5:35
Step-by-step explanation:
Every minute that goes by is 7 more gallons added to the swimming pool. So in the first 5 minutes it would increasingly get fuller at 7 gallons a minute
solve for h: 12h - 33 = 99
Answer:
h=11
Step-by-step explanation:
12h-33=99
12h-33+33=99+33
12h=99+33
12h= 132
12h/12=132/12
h=11
5th Grade Math HW Help (Please help, due 12/14!) I'll pick the best answer for extra points.
Answer:
(1-4)
1. 160÷(16+4)=8
2. (4+6)*8÷2=40
3. 3=120÷(64-24)
4. 135=(42+3)*3
(5.a.)1. column A
2. column B
3. column A
4. column A
5. column A
6. column B
(5.b) i don't know :(
(6.a) 72
(6.b) I followed the Base * Width * Hight method. I used the expression 3*4*6=72
<3
Stefan sells Jin a bicycle for $115 and a helmet for $17. The total cost for Jin is 110% of what Stefan spent originally to buy the bike and helmet. How much did Stefan spend originally? How much money did he make by selling the bicycle and helmet to Jin? IF BOTH PARTS OF QUESTION ARE ANSWERED CORRECTLY I WILL GIVE BRAINLIEST
Answer:
120 and 12
Step-by-step explanation:
115+17= 132
132/110= 1.2
1.2 · 100= 120
132-120= 12
convert the following to slope intecept form, 4x+6y=−12
Answer:y= -2/3 x -2
Step-by-step explanation:
you find the slope of the line and... I can't remember I did this so long ago
Choose the graph that represents the following system of inequalities:
y ≥ −3x + 1
y ≤ 1 over 2x + 3
In each graph, the area for f(x) is shaded and labeled A, the area for g(x) is shaded and labeled B, and the area where they have shading in common is labeled AB.
a dashed line g of x rising left to right that is shaded below and a dashed line f of x that is falling left to right that is shaded above
a dashed line f of x rising left to right that is shaded above and a dashed line that is falling g of x left to right that is shaded above
a dashed line g of x rising left to right that is shaded above and a dashed line f of x that is falling left to right that is shaded below
a dashed line g of x rising left to right that is shaded below and a dashed line f of x that is falling left to right that is shaded below
Answer:
Option B loves
Step-by-step explanation:
I took the test
Answer:
y ≥ −3x + 1
y ≤ 1 over 2x + 3
Step-by-step explanation:
Multiple choice question
The equation y = 15x + 225 represents the relationship between the total cost, in dollars, y, to rent a banquet hall of a party, and the number of people attending, x. Which of the following statements are TRUE about the equation? Select All that apply.
A. The y-intercept is 15.
B. It is a linear function.
C. It has a slope of 15.
D. It has an initial value of 225.
E. It has a slope of 225.
Answer:
B, C, and D
Step-by-step explanation:
help please! !!!!! !!!!
Answer:
I would assume it's all but the second one (earned $60 over the summer=false)
Answer:
A
Step-by-step explanation:
A is more reliable than the others because we don't know what x is. I am so sorry if this is wrong!!!!! I'm sorry didn't see the select all.
help me with 2a and 2b, please
step by step, please
Answer:
2a:33/25
2b:9/5
Step-by-step explanation:
2a(11/10)/(5/6)11/10*6/566/5033/252b(6/5)/(2/3)6/5*3/218/109/5Answer:
A.1 8/25
B.1 4/5
Step-by-step explanation:
11/10 x 6/5= 1 8/25
6/5 x 3/2= 1 4/5