the answer is 3n-2 please do you get it
i need to factor 5n^2-16
Answer:
([tex]\sqrt{5}[/tex] n - 4)([tex]\sqrt{5}[/tex] n + 4)
Step-by-step explanation:
Using the factorising method, difference of 2 squares
a² - b² = (a - b)(a + b) , then
5n² - 16
= ([tex]\sqrt{5}[/tex] n )² - 4²
= ([tex]\sqrt{5}[/tex] n - 4)([tex]\sqrt{5}[/tex] n + 4)
Someone help and plz make sure it’s right
Answer:
9.4km
Step-by-step explanation:
6.2^2 +7.1^2 = x^2
so 38.44+ 50.41= 88.85
x^2= 88.85 so x = 9.4
Sorry if it's really confusing lol, if you need help i could explain it further but your answer is 9.4
I need help ASAP !!!!!!!!!!
Answer:
the first one
Step-by-step explanation:
-.8x + 4.8y + 16
hope this helps
Help bestiess
7x=5x÷67
Answer:
7x=5x/67
Step-by-step explanation:
Bob wants to buy a television that costs $600, including taxes. To pay for the television, he will use a payment plan that requires her to make a down payment of $240, and then pay $68.50 each month for 6 months. What is the percent increase from the original cost of the television to the cost of the television using the payment plan?
Answer:
108.5% increase
Explanation:
Find how much payments will cost for 6 months
68.50 × 6 = 411
Add payments to down payment
411 + 240 = 651
Compare:
600 vs 651
Solve for percent increase:
651 ÷ 600 = 1.085
Convert decimal into percentage:
1.085 × 100% = 108.5%
Which is a measure of center of a distribution?
O A. mean
OB. range
O C. variance
OD. standard deviation
Will give brainiest to correct answer
3. BestBuy is offering 30% off all items. If x is the original purchase prices, select
ALL of the expressions which represent the final price with the discount
B. 0.7x
A 13x
C. X
D. X -0.3x
EX+ 0.3%
Answer:
B and D
Step-by-step explanation:
simple math :)
Answer:
B and D
Step-by-step explanation:
Just took the test
Please follow me
Pls answer this question for ill give brainliest
Quadrilateral ABCD is a rectangle. BE=2x+1 and AC=6x−12 . What is BE ?
Answer:
BE=15
Step-by-step explanation:
Since E is the center, BE=2x+1
And AC is 6x-12 with E being a midpoint.
Since AC is 2 segments and BE is only 1 then you multiply 2x+1 by 2 so that
you can find x. You multiply 2x+12 by 2 because E is the midpoint so that means ED is the same value as BE
6x-12=4x+2
BD=AC
6x-4x-12=2
2x=2+12
2x=14
x=7
BE= 2x+1
2(7)=14+1=15
find the volume of the cylinder
Answer:
hope help you stay happy and safe
Find LM
a. 4.5
b.2
c.5.5
d.48
PLEASE ANSWER WILL MARK BRAINLIEST
Answer:
c. 5.5
Step-by-step explanation:
Please help me !! Find the missing length indicated.
Answer:
Step-by-step explanation:
use the law of Cosines so that you can solve a SSS triangle
Cos(C) = [tex]a^{2}[/tex] + [tex]b^{2}[/tex] - [tex]c^{2}[/tex] / 2ab
c is the side of 24 for our triangle and angle C is the top one in the picture.
C = arcCos ( [tex]a^{2}[/tex] + [tex]b^{2}[/tex] - [tex]c^{2}[/tex] / 2ab )
C = arcCos ( -32 / 480 )
C = 93.82255373 °
the angles at the top are each half of that or 46.91127 °
let's solve another angle for the big triangle now let's go for the one on the left and call it A
Cos(A) = [tex]c^{2}[/tex] + [tex]b^{2}[/tex] - [tex]a^{2}[/tex] / 2bc where a = 20
A = arcCos( [tex]c^{2}[/tex] + [tex]b^{2}[/tex] - [tex]a^{2}[/tex] / 2bc)
A = arcCos( [tex]24^{2}[/tex] + [tex]12^{2}[/tex] - [tex]20^{2}[/tex] / 2*12*24
A = arcCos(320 / 576)
A = 56.2510 °
then angle B is 180 =93.823 + 56.251 + B
29.926 ° = B
so now we know all 3 angles.. seems like a lot of work , huh :D
for the triangle with the question mark we now know two angles and the Hyp, so let's use Law of Sines to find that last side :)
Sin(A)/a = Sin(B) /b where A can be the angle at the top and B can be the angle at the base. which we have to find still :/
it's 180 = 46.9112 + 29.926 + B
103.162 = B
Sin(46.91127 ) / a = Sin(103.162) /20
Sin(46.91127 ) * 20 / Sin(103.162) = a
14.99998 = a I feel confident this is supposed to be 15 and I have a tiny bit of rounding error..
? = 15 there you go
your answer is 15
please help!! whoever gets right i’ll mark brainlist
Answer:
It's B
Step-by-step explanation:
Because 10 less than 20 mean 20 is not greater so B. ) is correct
find the 10th term of 3, 9 /2 , 27/4
Answer:
Step-by-step explanation:
the nth term of a geometric sequence is
∙
x
a
n
=
a
r
n
−
1
where a is the first term and r the common ratio
r
=
a
2
a
1
=
a
3
a
2
=
...
...
=
a
n
a
n
−
1
here
a
=
3
and
r
=
9
3
=
27
9
=
3
⇒
a
10
=
3
×
3
9
=
3
10
=
59049
I need help on this plz thx
Answer:q=3
Step-by-step explanation:
14 multiplied by 3 equals 42
Answer: q = 3
Step-by-step explanation:
14q/14 = 1q
42/14 = 3
1q = 3
q = 3
Help ASAP please
Which algebraic expressions are like terms with 16K. Choose all that apply .
Use the converse of the side-splitter theorem to determine if T R is parallel to R S. Which statement is true? Line segment TU is parallel to line segment RS because StartFraction 32 Over 36 EndFraction = StartFraction 40 Over 45 EndFraction. Line segment TU is not parallel to line segment RS because StartFraction 32 Over 36 EndFraction not-equals StartFraction 40 Over 45 EndFraction. Line segment TU is parallel to line segment RS because StartFraction 32 Over 45 EndFraction = StartFraction 40 Over 36 EndFraction. Line segment TU is not parallel to line segment RS because StartFraction 32 Over 45 EndFraction not-equals StartFraction 40 Over 36 EndFraction.
Line segment TU is parallel to line segment RS because 32/36 = 40/45.
What is side splitter theorem?According to the "Side Splitter" Theorem, a line that crosses two sides of a triangle and runs parallel to its third side proportionally divides those two sides.
A line will divide two sides of a triangle proportionally if it runs parallel to one of the sides and intersects the other two.
Given
It is evident from the presented figure that QT=32, TR=36, QU=40, and US=45.
The opposite of the side splitter theorem asserts that a line is parallel to a third side if it divides two sides proportionally.
TU separates the two sides by a factor of in
QT/TR = 32/36 = 8/9
QU/US = 40/45 = 8/9
QT/TR = QU/US
It implies that the line TU divides the two sides equally.
Line segment TU is parallel to line segment RS using the reverse of the side splitter theorem because
32/36 = 40/45
Hence option 1 is correct.
Learn more about side splitter theorem;
https://brainly.com/question/30105519
#SPJ5
The complete Question is,
Solve for the measure of each angle. Trigonometry.
Answer:
∠A=26º
∠B=137º
∠C=17º
Step-by-step explanation:
We can use the Law of Cosines because we have all 3 side lengths.
cosA = [tex]b^2+c^2-a^2/2bc[/tex]
cosA=28^2+12^2-18^2 / 2(28)(12)
cosA=604/672
cos-1(604/672
angle A ≈ 26º
cosB = [tex]c^2+a^2-b^2/2ca[/tex]
cosB=-316/432
cos-1(-316/432
angle B ≈ 137º
26+137=163
180-163=17
angle C ≈ 17º
need help with 5 6 7 and 8. at least answer one of them .
Answer:
5) moves one place to right
6) moves one place to left
Step-by-step explanation:
A scale on a blue print drawing of a house shows that 10 centimetres represents 22 meters.
What number of actual meters are represented by 18 centimetres on the blue print?
Answer:
39.6
Step-by-step explanation:
if
10=22
18=x
18x22=396/10= 39.6
In ΔTUV, the measure of ∠V=90°, TU = 24 feet, and VT = 15 feet. Find the measure of ∠U to the nearest degree.
Answer:
39
Step-by-step explanation:
Answer:
39
Step-by-step explanation:
sinU=opp/hyp= 15/24
sinU=15/24
U=sin^-1(15/24)
U=38.682=39
Help me please! (easy question) and (15 points) Brainliest if right!!!
Answer:
D. y = -1/2x + 18.5
Step-by-step explanation:
First you want to find the slope of the line that these coordinates make. To do this, use the slope formula: (y₂ - y₁) / (x₂ - x₁). I will use the first and last points.
(1, 18) & (6, 15.5)
Plug in these values:
(15.5 - 18) / (6 - 1)
Simplify the parentheses.
= (-2.5) / (5)
Simplify the fraction.
-2.5/5
= -1/2
This is your slope.
Now plug this into the standard slope-intercept equation: y = mx + b
y = -1/2x + b
b is the y-intercept, or the value of y when x = 0.
To find b, we want to plug in a value that we know is on this line: in this case, it is (1, 18). Plug in the x and y values into the x and y of the standard equation.
18 = -1/2(1) + b
To find b, multiply the slope and the input of x (1)
18 = -1/2 + b
Now, add 1/2 to both sides to isolate b.
18.5 = b
Plug this into your standard equation.
y = -1/2x + 18.5
This is your equation.
Hope this helps!
Choose the equation of the line that is parallel to the y-axis.
x=-2, x+y=0, x=y, y=2
Answer:
x = -2 is the answer. Brainly requires a 20 character answer for some reason so im writing this
Answer:
x = - 2
Step-by-step explanation:
A line parallel to the y- axis is a vertical line with equation x = c
c is the value of the x- coordinates the line passes through.
The only equation in this form is
x = - 2
3x 2+ 4x - 20
using grouping or an area model.
Answer:
Is the 3x a power of 2, once I get that info I'll edit my answer
Step-by-step explanation:
Laura wants to cover a box with fabric.
• The box is in the shape of a rectangular prism.
• It measures 15 in. long, 11 in. wide, and 24 in. tall.
What is the total surface area of the exterior of the box that Laura will cover
Answer:
1968 in
Step-by-step explanation:
times the width and height, then times the answer by 2.
times the length and height, then times the answer by 4.
add both answers
you get 1968in
Answer:
hey so the answer is 1,578 inches square
Step-by-step explanation:
.
can someone help?.............
Answer:
Step-by-step explanation:
The sum of the three interior angles of a triangle is always 180.
Knowing this, we can set up an equation for the given angles:
[tex]8x + 10x + 12x = 180[/tex]
[tex]30x = 180[/tex]
[tex]x = 6[/tex]
Knowing this, we can now plug it into the angles:
[tex]8x[/tex]
[tex]8 * 6[/tex]
[tex]48[/tex]
[tex]10x[/tex]
[tex]10 * 6[/tex]
[tex]60[/tex]
[tex]12x[/tex]
[tex]12 * 6[/tex]
[tex]72[/tex]
Simplify
5 x 5^2
leaving your answer in index form.
Answer:
5 x 5^2=125
Step-by-step explanation:
A 300 long wire is used to fence a rectangular plot whose length is twice its width find the length and breath
Answer:
Length = 100
Width = 50
Step-by-step explanation:
Given :
Length = 2 * width
If :
length = l
Width, w
l = 2w
Perimeter, P of rectangle :
P = 2(l + w)
P = 2(2w + w)
300 = 2(3w)
300 = 6w
w = 300/6
w = 50
l = 2w
l = 2(50)
l = 100
if 6x+4=20-2x, then 8x=?
Answer:
8x = 16 x=2
Step-by-step explanation:
Answer: Simplifying
8x = 0
Solving
8x = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '8'.
x = 0
Simplifying
x = 0
Step-by-step explanation:
will give brainliest
Answer:
904.32
Step-by-step explanation:
find the volume of the cylinder using V=πr^2h
V = (3.14)(6)^2(8)
V = 904.32
what's the value of given expression
[tex] \sqrt{ {20 + 5}^{2} } [/tex]
Step-by-step explanation:
√(20+5²)=√{20+25}=√45=3√5