Which expression is a factor of 9r^2-4r+1
Answer:
There are no real factors for this.
Step-by-step explanation:
We could answer this either by checking each listed expression to see whether it is a factor of 9r^2-4r+1, or
We could take the coefficients of 9r^2-4r+1, determine the quantity b²-4ac (called the 'discriminant') and draw a conclusion based upon whether the discriminant is -, + or 0.
Let's use the 2nd approach.
Here, a = 9, b = -4 and c = 1.
Then the discriminant is b²2 - 4ac, or (-4)² - 4(9)(1), or 16 - 36.
Since 16 - 36 is negative, we conclude that this 9r^2 - 4r + 1 has NO REAL FACTORS.
Please help this is due tomorrow and I don’t know what to do. I keep getting this wrong.
Answer:
BE=24
Angle EBC=33
Step-by-step explanation:
Rectangle diagonals are congruent so
[tex]3x + 6 = 6x - 12[/tex]
[tex]3x + 18 = 6x[/tex]
[tex]18 = 3x[/tex]
[tex]x = 6[/tex]
Plug that in one of the equations.
[tex]3(6) + 6 = 24[/tex]
BE=24.
ECD is apart of Isoceles triangle EDC.
Another isoceles triangle is EAB.
They triangle share two sides( remeber all diag ki bals in a rectangle are congruent) and a angle E, so they are congruent triangles.
That means Angle EBA measures 57 degrees.
Angle EBC and Angle EBA add up to 90 degrees so
Angle EBC=33
GIVING BRAINLIEST!!! PLS HELPP :((
2x(6+2+8)-4
SHOW UR WORK
Answer:
32x-4
Step-by-step explanation:
1. Add the numbers.
2x(16)-4
2. Multiply the numbers.
32x-4
i need help btw i am in middle school
Answer:
The answers to these questions would be :
1. 45
2. X=9
3.30
4.B
Step-by-step explanation:
Hope it was helpful , good luck ^.^
What is the value of the y-intercept of the graph f(x)=138⋅1.9^x?
Answer:
Hi! The answer to your question is 138
Step-by-step explanation:
☆*: .。..。.:*☆☆*: .。..。.:*☆☆*: .。..。.:*☆☆*: .。..。.:*☆
☆Brainliest is greatly appreciated!☆
Hope this helps!!
- Brooklynn Deka
Answer:
( 0 , 0 )
Step-by-step explanation:
Solve the system of equations: {2(3x-2y)+1=7x, 12(x+y)-15=7x+12y
Step-by-step explanation:
hope this help have a great day!
Please help due soon
Answer:
area 12.566
circumference 12.566
Step-by-step explanation:
Answer:
Circumference= 6.28 meters
Area=12.56 in²
Step-by-step explanation:
[tex]C=r*pi[/tex]
[tex]C=2*3.14[/tex]
[tex]C=6.28[/tex]
[tex]A=pi*r^2[/tex]
[tex]A=3.14*4[/tex]
[tex]A=12.56[/tex]
please help‼️‼️‼️‼️‼️‼️
Answer:
M
Step-by-step explanation:
simplify (8)²(2)³/
(4)³(-2)⁴
A)½
B)⅔
C)2/9
D)¾
Answer:
524288
Step-by-step explanation:
BIG POINTS!!!!!! PLEASE HELP ASAP I'M BEING TIMED!!!!!!!!!!!!!!!!!!!!!! Will mark BRAINLIEST!!!!!!!!!!!!
The vertices of a quadrilateral in the coordinate plane are known. How can the perimeter of the figure be found?
A) Use the distance formula to find the length of each side, and then add the lengths.
B) Use the slope formula to find the slope of each side, and then determine if the opposite sides are parallel.
C) Use the slope formula to find the slope of each side, and then determine if the consecutive sides are perpendicular.
D) Use the distance formula to find the length of the sides, and then multiply two of the side lengths.
Answer: A
Step-by-step explanation:
We have to find the perimeter of the figure.
For doing so, we have to find the length of all the sides of a quadrilateral
The length of a line segment joining points (x1,y1) and (x2,y2) is given by the distance formula:
after finding length of all the sides, we add the length of each side to get the perimeter.
Use the distance formula to find the length of each side, and then add the lengths.
Find the surface area of the prism.
3 m
4 m
5 m
10 m
The family car leaves the house 112 hours after the moving van and follows the same route. The moving van travels at an average speed of 45 miles per hour. The family car travels at an average speed of 60 miles per hour. After how many hours of driving will the family car catch up to the moving van?
Answer: 336 hr
Step-by-step explanation:
Given
The speed of the van is 45 mph
The speed of the family car is 60 mph
distance traveled by van in 112 hours is
[tex]d_1=45\times 112=5040\ miles[/tex]
After 112 hours family car started its Journey. Suppose, van travels another x miles after the family car started its Journey
So, distance traveled by the family car in 't' hours
[tex]\Rightarrow 60\times t=112\times 45+45\times t\\\\\Rightarrow 15 t=5040\\\\\Rightarrow t=\dfrac{5040}{15}=336\ hr[/tex]
So, after traveling 336 hr, the family car will catch the van
Which is the most accurate way to estimate 32% of 14?
A: 1/2 x 15
B: 1/3 x 15
C: 1/3 x 17
D: 1/2 x 17
Answer:
B: 1/3 × 15
Step-by-step explanation:
1/3 = 33%
Round 14 up to 15.
This will get you the closest answer
can someone please help with parts a, c, and e (picture included)
please help!
These two polygons are similar.
4
2
3
9
6
15
w
w = [?]
Answer:
w=9
Step-by-step explanation:
short answer 2 and 6 are the same size with three x difference, so three times three is nine.
Matilda needs at least $112 to buy a new dress. She has already saved $40. She earns $9 an hour babysitting. How many hours will she need to babysit to buy the dress
Answer:
Down below. was solved using an equation.
Step-by-step explanation:
[tex]y=40+9x\\y=112\\112=40+9x\\112-40=40+9x-40\\72=9x\\72/9=9x/9\\8=x[/tex]
She would need 8 hours of babysiting
16*16 is what ill give brainlieast
Answer:
16 × 16 = 256
your answer is 256
Answer:
256 is the answer
Step-by-step explanation:
16 x 16
= 16^2
= 256
InO0, mCA=150andAB=CD
What is mBD?
Answer: I’m pretty sure that BD should also be 150
Step-by-step explanation:
The measure of angle O is 75 because the angle is always half of the arc, so knowing that, and also cd and abs are congruent, the other side of o is probably the same as the other, so it’d be 75, multiply by 2 and itll be 150.
The polygons are similar. Find the value of x
which of the following is a Pythagorean triple? A. 3,4,6. B. 7, 25, 26. C. 15, 21, 25. D. 9, 40, 41,
São eles: (3, 4, 5), (5, 12, 13), (7, 24, 25), (8, 15, 17), (9, 40, 41), (11, 60, 61), (12, 35, 37), (13, 84, 85), (16, 63, 65), (20, 21, 29)
Please help
Please help find Y
Answer:
2
Step-by-step explanation:
The given angle is 45 degrees so the triangle has the same legs.
we can find the hypotenuse by using the Pythagorean theorem
y= √2(√2)^2 = √4 = 2
HELPPPP
Whats the cross section from a vertical slice of the figure?
kooooooooooooo9999999999
Answer:
Looooool
Kooooooooooooooooooooooooooooooooooooooo9999999999999999999999999 to you too!!!
Step-by-step explanation:
Can I have brainiest plz! Thanks!!!
Answer:
I am not sure how you want this question to be answered since it's not a question but um... the answer is Chim chim chim churie
Step-by-step explanation:
HELP ME PLS IF ITS POSSIBLE PLS ANSWER ALL THESE QUESTIONS!! <3
Answer:
1.) the range is 42
2.) mean: 69.4, median:63, mode:none
3.) none since they are numbers that can be high but not low.
4.)The outlier is a greater number like the mean is 69 and the median is 63 which is halfway between 63 and 64 it will affect more the mean than the median since it doesn't matter the actual value of the outlier. it just depends on what the outlier is.
5.) the measure of central tendency best describes the set data with the outlier to which there is no outlier.
Step-by-step explanation:
What value of x will make line m parallel to line n?
The value of x that will make line m parallel to line n is?
it's all on the picture please answer
Answer:
[tex]\boxed {\boxed {\sf 32+8k}}[/tex]
Step-by-step explanation:
We are given the expression:
[tex]8(4+k)[/tex]
To solve, distribute the 8. Multiply each term inside the parentheses by 8.
[tex](8*4)+ (8*k) \\ (32)+(8k) \\32+8k[/tex]
The expression is equal to 32+8k
A rectangular prism has a length of 5cm, a height of 7cm, and a width of 9cm. What is its volume, in cubic cm?
Answer:
315 cubic cm
Step-by-step explanation:
length = 5cm
height = 7cm
width = 9 cm
Area of a Rectangular Prism = lwh
Area = 5 x 7 x 9
Area = 315 cubic cm
Answer:315
Step-by-step explanation:
Find the Volume
If its correct i give 5 stars a like and brainliest
Answer:
171 in³
Step-by-step explanation:
A coat has an original price of $48.99. Gloria wants to calculate the final cost of the coat including the 7% sales tax. She could use the expression 0.07 (48.99) + 48.99 to determine the final cost. Which other express could she also use to determine the final cost?
(0.07) ($48.99)
(1.07) ($48.99)
(1.93) ($48.99)
(0.93) ($48.99)
Roberto deposited $700 into a savings account for 2 years. He forgot what the interest rate was on his account but he got a statement saying he earned $63 in interest. Use the simple interest formula to determine his interest rate for this account. r= _____%
Answer:
r = 4.5%
Step-by-step explanation:
I = Prt
$63 = $700 x r x 2
$63 = 1400r
r = 0.045
r = 4.5%
Please mark as brainliest
Hope this helps :)