Answer:
[tex]x=2\sqrt{2}[/tex], [tex]x=-2\sqrt{2}[/tex], [tex]x=4i[/tex], [tex]x=-4i[/tex]
Step-by-step explanation:
[tex]x^4+11x^2=3x^2+128[/tex]
First, we subtract 128 from both sides:
[tex]x^4+11x^2-128=3x^2[/tex]
Then, we subtract [tex]3x^2[/tex] from both sides:
[tex]x^4+8x^2-128=0[/tex]
Rewrite the equation:
[tex]u^2+8u-128=0[/tex]
Insert and solve:
[tex]u^2+8u-128=0\\u=8,u=-16\\x^2=8:x=2\sqrt{2},x= -2\sqrt{2} \\x^2=-16:x=4i,x=-4i[/tex]
Please give Brainliest
An oval running track is 1/5 mile long. Elena runs on this track, completing each lap in 1/20 of an hour. What is Elena's running speed? (in miles per hour)
PLEASE I NEED HELP ASAP
Answer:
5 miles per hour
Step-by-step explanation:
the answer is 5 miles per hour, sorry if I am wrong.
Mikayla has $30 in a cafeteria account. She spends $3 each day for lunch. Which equation matches Mikayla's situation?
y=3x-30
y=-3x-30
y=30x-3
y=30-3x
Answer:
y=30-3x
Step-by-step explanation:
3. Use the equation to answer the following question. 3x2 + 7x - 20 = 0 What are the solutions of the equation?
A. X = 5 and x = 4 3
B. X = - 4 and x = 5 3 4
C. X = and x = -5 3 5
D. X = and x = -4 3
What’s the area ? Please help
Answer:40
Step-by-step explanation:
Answer:
the answer is 40 square units
Step-by-step explanation:
it basically gives you the answer and you just have to choose which one. with area it will always be square units (whatever the unit my be) or units^2
Is 5 26 28 a right triangle?
Compare and contrast a linear pair and vertical angles.
Answer:
Vertical angles are both the same angle measure while a linear pair is 2 sets of points creating a line.
Step-by-step explanation:
free coins- 1) what is 2+2?
2) 5x5
3) sam has 30 lemons, she gives 7 to her friend. how many lemons does her friend have?
may you answer them all-so you can earn it?
Answer:
mean
Step-by-step explanation:
Answer:
1) 4
2) 25
3) 7 lemons
Step-by-step explanation:
sam has a lemon problem
-(7-9)z-6z=8(-6+2) solve for z
can I see the process I know the answer is 8 I just don't understand the process
Answer:
(-(7-9))(z)-6z= 8(-6+2)
Simplify
-(-2)(z) -6z =8(-6+2)
Multiply 8*-6 and 8*2
2z -6z= -48+16
Combine like terms
2z+-6z =-32
-4z=-32
Divide both sides by -4
z=8
Step-by-step explanation:
Of the 36 students in the class, 8 of them are boys. If one student is picked at random, what is the probability that the student will be a boy?
Right answer will get brainlist.
Answer:
645π/2
Brainlist please :)
What is the probability he will roll a 5?
Answer:
hurt himself if he is 5 pieces away from jail in monopoly and this is his 9th time
Step-by-step explanation:
7) A store has a sale for 10% off. You decide to buy a $17 DVD.
A) How much money will you save?
1
I
B) How much money will you spend on the DVD?
Answer:
a) $15.30
b) $32.30
Step-by-step explanation:
a) 0.10 x $17.00 = $1.7
$17.00 - $1.7 = $15.30
You will save $15.30 on the DVD
b) $15.30 + $17.00 = $32.30
You will spend $32.30 on the DVD
Solve for x and then find the measure of B
Answer:
x=6
b= 126
Step-by-step explanation:
8x+78 = 2x+114
8x-2x = 114-78
6x=36
x=6
--------
b=2x6+114
b= 126
please. please. please. help
Answer:
kjh7563653 365385 36539y5 53nkddg dhdk djgd ghgkg d99 76 79
Step-by-step explanation:
18-
3. Your family is planning to take the Amtrak train from Hartford to New York City for a day trip. As a result
of some research you learn that your friend Jackie took the train with a group of 3 adults and 5 children and
it cost them $269.50. A cousin also took the train to the city with a group of 2 adults and 3 children and it
cost them $171.50. Find the price of an adult's ticket and the price of a child's ticket.
Answer: 67.37 for adult 45.91 for child
Step-by-step explanation:
Congruen Figures lyures Which figure is congruent to the given figure? Will give brainliest
Answer: Its the rectangle thats going upwards not flat.
Step-by-step explanation:
Answer: The rectangle at the very top and the one at the bottom are congruent.
Step-by-step explanation: REMEMBER YALL: congruent means the same( in geometry)
//Give thanks if helpful :)//
1+1=2 2+2=4 4+4=8 8+8=
Answer:
Use a caculator?
Step-by-step explanation:
60% of 15 is what answer
Answer:9
Step-by-step explanation:
Think of it this way:
If 15=100%
then x= 60%
So what you do is you multply 60 times 15 and divide it by 100 to give you the answer of 9. To me this is the simplest way to do it, I believe it’s called butterfly multiplying. You cross multiply and then you divide.
ANYONE HELP PLEASE<3
Answer:
y = (2/3)x + 7
Step-by-step explanation:
Slope intercept form is y = mx +b
1) We start off with y =
2) m = slope. Since we know that the slope is 2/3 we can plug it in. y = 2/3x
3) b is y-intercept which = 7.
Put it all together: y = 2/3 x + 7
Factor the expression
C^2 - 2c - 63
Answer:
(c + 7) ( c - 9)
Step-by-step explanation:
Answer:
(c + 7)(c - 9)
Step-by-step explanation:
Please help! I will chose Brainlist! Thank you!
A model of a building is made using a scale of 1 inch= 25 feet. What is the height of the actual building if the height of the model is 12.5 inches.
Step-by-step explanation:
12.5 ×25
312.5
plz make me brainliest
can someone help me answer this pls.
Answer:
a. {7,14}
b. {10,17,24,31}
c. (no)
Step-by-step explanation:
c. because for two different values of domain there is a single value of codomain (range )
-3,-12,-48,-192
Is this sequence arithmetic yes or no ?
First person to answer gets brainliest
Answer:
Yes, Considering They Are all Negative, Or if Its Wrong then, It would Be No, Because They might Be Negitive but, They Done Count By the Same Number, My Answer Would be Yes.
Step-by-step explanation:
Brianna used two congruent parallelograms and a square to create the figure.
What is the area of the figure Brianna created in square feet?
Answer Choices:
A: 27 ft²
B: 24 ¾ ft²
C: 67 ½ ft²
D: 33 ¾ ft²
Answer:
D. 33 3/4 ft²Step-by-step explanation:
The figure comprises of a square with side of 4 1/2 ft and two parallelograms with base of 4 1/2 ft and height of 1 1/2 ft
Total area is:
(4 1/2)² + 2(4 1/2)( 1 1/2) = (4 1/2)( 4 1/2 + 2(1 1/2)) = 9/2(9/2 + 3) = 9/2(15/2) = 135/4 = 33 3/4 ft²Correct option is D
Answer: the correct answer is d
Step-by-step explanation: make me a brainlest
Please help me I don’t understand
X°5
Step-by-step explanation:
Samuel buys office supplies for his home business. The office supplies cost $175.79 before taxes. The sales tax rate is 8.25%. What is the amount of sales tax Samuel will pay?
a$8.25
b $145.03
c$14.50
d$190.29
Answer:
It’s 14.50
Step-by-step explanation:
As the total answer with the taxes would be 190.29 so you subtract it by 175.79 to get 14.50.
Need to know now!
How do you solve “at this rate...”
Answer: you do the length times width
Step-by-step explanation:
Answer:
"At this rate" for me usually will be some sort of dividing
(-5,-3) (5,5)
slope
What is the slope ?
Answer:
The slope is 10/8
Step-by-step explanation:
You would rise 10 units and you would run 8 units.
angle A and angle B are supplementary angles. If m angle A = (2x + 26)° and m
angle B = (x + 25)°, then find the measure of angle B.
x=43
Answer:
m angle B = 68°
Step-by-step explanation:
Since they are supplementary, they add up to 180°
(2x+26) + (x+25) = 180
add like terms together
3x+26+25=180
simplify the left side
3x+51=180
subtract 51 from both sides
3x=129
divide both sides by 3
x=43
Then you plug in x into measure B
(43)+25
68
f(x) = -4x^2 – 7x + 4
Find f(-7)
Answer:
-143
Step-by-step explanation:
you plug -7 in the x variables
-4(-7)^2-7(-7)+4 = -143