Can anyone solve this using the "completing the square" method? (or something similar)
Solve for X
Answers
x(x+3)=40
2x+3x=40
5x=40
x=8
Related Questions
"Dan" uses 2/3 cup of brown sugar and 1/4 cup of white sugar to make oatmeal bars. How many cups of sugar does he use in all?
Answers
Answer:
the number of cups of sugar he use in all is [tex]\frac{11}{12}[/tex]
Step-by-step explanation:
The number of cups does he use in all as follows:
= Brown sugar + white sugar
[tex]= \frac{2}{3} + \frac{1}{4}\\\\= \frac{8 + 3}{12} \\\\= \frac{11}{12}[/tex]
Hence, the number of cups of sugar he use in all is [tex]\frac{11}{12}[/tex]
A painter is painting a rectangular wall that measures 30ft by 14.5ft.Each gallon of paint covers 100 square feet.What are the FEWEST gallons needed to paint the wall?
Answers
Answer:
5 gallons
Step-by-step explanation:
area of wall is 435 sq ft
100 sq ft requires 1 gallon so 435 sq ft requires at least 5 gallons
Completa cada espacio con un signo mayor o menor..
• 6,348 ___________ 6,35
• 0,095 __________ 0,2
• –1,21 ___________ –1,1
• - 10,75 ___________ 10,585
Answers
Answer:
Fill in each space with a major or minor sign.
• 6.348 ____<_______ 6.35
• 0.095 _____<_____ 0.2
• –1.21 _____<______ –1.1
• - 10.75 _______<____ 10.585
A pond has 150 fish initially, and the population decreases by 8% each day.
Which equation represents this situation?
Answers
Answer: not sure.. i got 18.75 so i dont rly know if 18 daily or 19if 19 fish daily then the last day would have 5 left
Step-by-step explanation:
How many irrational numbers are there between 1 and 6 ?
1
3
4
10
Infinitely many
Answers
Answer:
The answer is Infinitely many
The enrollment at Temple Junior High School has a change of ─ 60 over a 3 year period. What is the average change per year?
Answers
Answer:
- 20
Step-by-step explanation:
Total Change in enrollment = - 60
Period of time at which change occurred = 3 years
Average change per year :
Total change in enrollment / period at which change occurred
= - 60 / 3
= - 20
Average change of - 20 enrollments per year
identify the constant of proportionality
2/3
3/2
3
6
Answers
help pls! what is the value of x?
Answers
Consider the following equation.
x – 0.32x = 0.68x
Which of the following statements matches the mathematical equations?
Question 5 options:
a) Decrease a number by 0.32 is the same as multiplying by 0.68.
b) Decrease a number by 32% is the same as increasing by 68%.
c) Decrease a number by 0.32 is the same as multiplying by 0.32.
d) Decrease a number by 32% is the same as multiplying by 68%.
Answers
Answer:
d) Decrease a number by 32% is the same as multiplying by 68%Step-by-step explanation:
Given equation:
x - 0.32x = 0.68xOptions (4 of them given)
a) Decrease a number by 0.32 is the same as multiplying by 0.68.
x - 0.32 = 0.68x ⇒ 0.32x = 0.32Incorrectb) Decrease a number by 32% is the same as increasing by 68%.
x - 32% = x + 68% ⇒ 0 = 100%Incorrectc) Decrease a number by 0.32 is the same as multiplying by 0.32.
x - 0.32 = 0.32x ⇒ 0.68x = 0.32Incorrectd) Decrease a number by 32% is the same as multiplying by 68%
x - 32% = 0.68x ⇒ x - 0.32x = 0.68x ⇒ 0.68x = 0.68xCorrectFind the y-intercept and write as a point (x, y)
Answers
Answer:
(0,3)
Step-by-step explanation:
Answer:
The two points- (0,3) (-2,-1)
The y-intercept is (0,3)
The slope is 2
Mrs. Neville is baking five batches of cookies. She will need 2 \frac{1}{2} 2 1 cups of flour for each batch of cookies. If she begins with a 20 cup bag of flour, what is the resulting change in the amount of flour in the bag?
Answers
Answer:
12.5 cups used
7.5 cups left
Step-by-step explanation:
Number of batches = 5
Cups of flour per batch = 2 1/2 cups
Initial amount of flour = 20 cup bag
After 5 batches ; number of cup used :
5 * 2 1/2 = 12.5 cups of flour
Change in amount of flour in bag :
(20 cups - 12.5 cups) = 7.5 cups
What is the degree of g(x) = 5x + 6x7 – 8x3?
(pls help will cash app you 5$)
Answers
Answer:
7
Step-by-step explanation:
Here, we want to get the degree of the polynomial
Mathematically, the degree is the power to which the highest power in the polynomial is raised
looking at the polynomial, we can see that the highest power here is raised to the power of 7
that means that the polynomial is of degree 7
This is trigonometry btw
Answers
Answer: x = 13.3
Step-by-step explanation:
Use SOHCAHTOA
The opposite of the angle and the adjacent of the angle is given, so use tangent.
tan(35) = x/19
19*tan(35) = x
x = 13.3
Someone help me please only 7, 8, and 9 thank you
Answers
7. 13.2 m
8. 44 in
9. 50.3 cm
Which equation is NOT equivalent to p- 7 = 22? Select all that apply.
A. p-p-7 = 22-p
B. p-7-p = 22 -
C. p - 7 + 22 = 22 - 7
O
D. p - 7 + 7 = 22 - 22
Ep-7 + 7 = 22 +7
Answers
Answer:
c and d
Step-by-step explanation:
i hope this help
Please do at least one of them if someone already did one do the other :D
Answers
Answer:
LOL i belive its 200 because i did this exact same thing yesterday for homework and got it right, good luck on getting the question right! because i got it right for my homework!
Step-by-step explanation:
what figure is this?
Answers
Answer:
triangular prism
Step-by-step explanation:
(x+30 degrees) +(45 degrees)
Answers
Answer:
30x + 45
Step-by-step explanation:
Answer:
30x+45°
Step-by-step explanation:
small brainnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
Answers
Answer:
combined means to add so you are going to add anything over 1 because it says longer than 1
1 1/4 has 2 marks so you add 1 1/4 + 1 1/4 =
they have like denominators so you can add them together
1 + 1 = 2 and 1/4 + 1/4 = 2/4 which can be reduced to 1/2
so your answer is 2 1/2
6th grade math help me pleaseeee
Answers
Answer:
T I hope this helps:D
4 out of 5 students eat a school lunch there is 495 kids in the school how many kids eat home lunch's
Answers
Answer:
99
Exp:
495*.2=99
(urgent please help!!!!)in computing the mean of 8 numbers, a student mistakenly used 17 instead of 25 as one of the numbers and obtained 20 as the mean. find the correct mean.
Answers
Answer: 21
Step-by-step explanation:
The student's mean of the 8 numbers is 20; the total of the numbers will be
8 x 20 = 160
If we take out the 17 the total will be 160 - 17 = 143
If we then replace the 17 with 25 the total rises to 168.
168 divided by 8 = 21
I need help with this
Answers
Answer:
B
Step-by-step explanation:
It's B
3^5 = 243
so the 5th root of 243 is 3
(x^7)^(1/5) = x^(7/5)
(y^10)^(1/5) = 7 ^(10/5) = 7^2
z^(21)^(1/5) = z^(21/5)
7. Find the slope. Make sure to reduce.
Answers
Answer:
1/7 and if you reduce its still 1/7
Step-by-step explanation:
Help please URGENT!!! I give brainliest
Answers
Answer:
question 5 is choice c
question 6:
conditional statement:
if it is a fish then it lives in water
true
converse statement:
if it lives in water it is a fish
false
Explanation:
Law of Contrapositives:
The law of contraposition says that a conditional statement is true if, and only if, its contrapositive is true.
that applies to question 5 therefore it is c
Hope this helps! <3
I need help with this
Answers
Answer: the third one
Step-by-step explanation:
Syrus is buying a tent with the dimensions shown below. The volume inside the tent is 4.5\text{ m}^34.5 m 3 4, point, 5, start text, space, m, end text, cubed. Syrus isn't sure if the tent will be tall enough for him to stand inside.
Answers
Answer:
2 meters
Step-by-step explanation:
Given
[tex]Volume = 4.5m^3[/tex]
The question is incomplete as the picture of the tent is not attached.
However, I will use the attached figure to answer the question.
From the attachment, we have:
[tex]b = 1.5m[/tex] --- base of the tent
[tex]l = 3m[/tex] --- length of the tent
Required
Determine the height of the tent
The volume of the tent is:
[tex]\frac{1}{2} * bhl = Volume[/tex]
Where h is the required height.
So, we have:
[tex]\frac{1}{2} * 1.5 * h * 3 = 4.5[/tex]
[tex]\frac{1}{2} * 1.5 * 3 * h = 4.5[/tex]
[tex]\frac{1}{2} * 4.5 * h = 4.5[/tex]
Make h the subject
[tex]h = \frac{4.5 * 2}{4.5}[/tex]
[tex]h = 2m[/tex]
The height of the tent is 2m
Answer:
2 meters
Step-by-step explanation:
We can use the volume formula, V = 1/2 bhl
⋅1.5⋅h⋅3
=2.25h
=h
The height of the tent is 2 meters.
Hope this helps :)
A car starts moving at 9:00 am and moves at a constant speed. At what time will the car be at the distance 200 miles from the starting point, if at 9:30 it was at 20 miles from it.
Answers
. i got the answer of 2:00
Step-by-step explanation:
yea
Answer:
1:30
Step-by-step explanation:
This is correct
X2-(2x+3)
Elimina los signos de agrupación
Answers
After a few months, Isabella's mother decides to harvest all the peas and corn and sell it at the local market. She decides on these prices: Peas are sold at $ 3 3 4 for each square foot harvested. And, corn is sold at $ 1 1 2 for each square foot harvested. Calculate how much money she made if she sold all her produce (all of her peas and corn).
Answers
Answer:
See Explanation
Step-by-step explanation:
Given
[tex]Pea = \$ 3\frac{3}{4}[/tex]
[tex]Corn = \$ 1\frac{1}{2}[/tex]
Required: Determine the total sales
The amount of peas and corns sold are not given. So, I will make some assumptions
If 1 square foot of pea is sold at [tex]\$ 3\frac{3}{4}[/tex], then p square feet will be sold at: [tex]\$ 3\frac{3}{4}p[/tex]
Similarly:
If 1 square foot of corn is sold at [tex]\$ 1\frac{1}{2}[/tex], then c square feet will be sold at: [tex]\$ 1\frac{1}{2}c[/tex]
So, the total is:
[tex]Total = 3\frac{3}{4}p + 1\frac{1}{2}c[/tex]
[tex]Total = \frac{15}{4}p + \frac{3}{2}c[/tex]
Assumptions
[tex]p = 8[/tex]
[tex]c =6[/tex]
The equation becomes:
[tex]Total = \frac{15}{4}*8 + \frac{3}{2}*6[/tex]
[tex]Total = 15 * 2 + 3 * 3[/tex]
[tex]Total = 30+ 9[/tex]
[tex]Total = \$39[/tex]
Answer: can someone help i really need it <( _ _ )>
Step-by-step explanation:
help btw i think it is 3 as a hole and 3\8 as a fraction i need to learn about fractions more