Answer:
The answer is
[tex] a = \frac{11}{7} \\ b = \frac{6}{7} [/tex]
Step-by-step explanation:
[tex] \frac{3 + \sqrt{2} }{3 - \sqrt{2} } \times \frac{3 + \sqrt{2} }{3 + \sqrt{2} } \\ = \frac{9 + 3 \sqrt{2} + 3 \sqrt{2} + 2}{9 - 3 \sqrt{2} + 3 \sqrt{2} - 2 } \\ = \frac{11 + 6 \sqrt{2} }{7} \\ = \frac{11}{7} + \frac{6}{7} \sqrt{2} \ [/tex]
In comparison
Then
[tex]a = \frac{11}{7} \\ b = \frac{6}{7} [/tex]
Which classification is most precise for each figure?
A. Quadrilateral
B. Kite
C. Parallelogram
PLEASE ANSWER THIS QUESTION AND I WILL GIVE YOU 20 POINTS AND MAKE YOU BRAINIEST!!!!
Answer:
c. parallelogram
Step-by-step explanation:
The given figure is a parallelogram.
What is Quadrilateral?A quadrilateral is a four-sided polygon, having four edges and four corners.
In the given quadrilateral, opposite sides are parallel.
Opposite sides are congruent.
Opposite angles are congruent.
Same-Side interior angles are supplementary.
Each diagonal of a parallelogram separates it into two congruent triangles.
The diagonals of a parallelogram bisect each other.
Hence, the given figure is a parallelogram.
To learn more on Quadrilateral click:
https://brainly.com/question/29934440
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Are these triangles similar? Why?
A. Yes, SSS~ Postulate
B. Yes, SAS~ Postulate
C. Yes, AA~ Postulate
D. No, they are not similar.
Answer:
Step-by-step explanation:
<Q is common to both triangles.
130 / 40 = 3.25
Call DQ = x
40/130 = x / (x + 72) Cross multiply
40*(x + 72) = 130*x
40x + 2880 = 130x Subtract 40 x from both sides
2880 = 90 x Divide by 90
x = 32
(72 + 32)/32 = 104/32 = 3,25
The ratios are the same.
Therefore the triangles are similar by SAS
Please help me answer this last question.
The function shown describes f(x), the cost (in hundreds of thousands of dollars) of making x bicycles (in thousands).
f(x)= 1.25 + 0.35x
B. What is the cost to make 4,000 bicycles? Show your work.
Answer:
1401.25
Step-by-step explanation:
F(4000)= 1.25+0.35(4000) = 1401.25
A cylinder has volume 45 pi and radius 3. What is its height?
Answer:
Height = [tex]\frac{5}{\pi }[/tex]
Step-by-step explanation:
V = Volume
r = Radius
h = Height
[tex]h=\frac{V}{\pi *r^{2} }[/tex]
[tex]h=\frac{45}{\pi *3^{2} }[/tex]
[tex]h=\frac{5}{\pi}[/tex]
I hope this helps
Mrs. Duncan pours
8.4 liters of punch
into 3 serving
bowls. If she
poured an equal
amount of punch
into each bowl,
how many liters of
punch are in each
bowl?
Answer:
divide 8.4 with 3
the answer is 2.8
Solve for x in the diagram below.
(2x + 45)°
Answer:
x=45 (degrees)
Step-by-step explanation:
(2x+45)+x= 180 (linear pair)
3x+45=180
3x=180-45
3x=135
x=45 (degrees)
Answer:
x=45
Step-by-step explanation:
(2x+45)+x= 180 (linear pair)
3x+45=180
3x=180-45
3x=135
x=45
On a test Darra scored 36 points. If there were 40 points posible what grade did she get?
Answer:
90%/A
Step-by-step explanation:
if this helped please mark brainiest.
Answer:
She got a 90%
Step-by-step explanation:
You have to divide the number you got with the number that you can get out of. (36/40=0.9) and then convert the decimal to a percentage
agree or desagree ? ..........
Answer:
Disagree.
If you rotate the octagon 90° it will look the same.
good luck, i hope this helps :)
Answer:
Disagree
Step-by-step explanation:
If you have any shape and you rotate it 90 degrees, it moves down and to the right, not onto itself.
Challenge: Perla worked 4 hours at her job on Saturday and then spent $12.75, in the supermarket, on her way home. She worked 5 hours on Sunday and earned 1.5 times her normal hourly rate because it was a holiday. She spent $8.50, at the florist, on her way home on Sunday. If Perla had $70.75 after her spending, determine her normal hourly rate.
Write and solve an equation.
Note:
decide what your variable represents (example: x is number of hours)
only use 1 variable.
Work backward to check your final answer
Simplify the expression
Answer:(6-[tex]\sqrt{7}[/tex][tex].^{2}[/tex]
Step-by-step explanation:Ignore the point, put it withou the point
If Amy has two apples and drops one, how many does she have now?
What is the answer to -2 3/4 ÷ 5/-9 ??
Answer:23 /180
Step-by-step explanation:
−23/ 4 /5 /−9= 23 /180
Answer: 99/20
Step-by-step explanation:
-2 3/4 / 5/-9
-11/4/5/9
11/4*5/9
99/20
Simplify. 1.5m ^7(-4m ^5)^2
A.-6m^14
B.24m^14
C.12m^17
D.24m^17
Answer:
D. 24m^17
Step-by-step explanation:
Answer:
D. 24m^17
Step-by-step explanation:
Tell whether each proportion is true or false and prove your answer.
Answer:
the proportion is false
Step-by-step explanation:
5.5/7.5 = 11/15
3.5/7= 1/2
Solve 5(11x - 2) = 155
Answer:
5(11x-2) = 155
55x - 10 = 155
55x = 165
x = 165/55
x = 3
Step-by-step explanation:
hope it helps
What’s the correct answer
Answer:
I guess y is also 0 not sure
Find all the real solutions of x^3 – 2x^2 – 5x + 6 = 0.
Answer:
x=1 or x=-2 or x=3
Step-by-step explanation:
your answer is most likely one of the three
sorry if its incorrect :9
Please answer this !!!!!!!!
Then maybe you will be the Brainlist!!!!
Answer:
A. 60
B. 50
C. 5
Hope this helped :3
ANSWERS
A THE INITIAL SPEED OF CAR IS O KM/H
B THE HEIGEST SPEED OF VAN IS 50 KM/H
C FOR 10 sec THE VAN IS TRAVELING FASTER THAN CAR
PLEASE MARK ME AS BRAINLIEST
Find the degree of the monomial.
6r2n4t
Answer:
idek
Step-by-step explanation:
Write about a
way
how
you have used mathematics inside or outside of school. *
Plsss help it is important
Answer:
I have used mathematics at the store when i am buying something.
Step-by-step explanation:
HELP ME 7th grade math
What is the total amount of cardboard needed to manufacture this polyhedron? (Find the surface area)
Plz answer
Can someone please help me
Answer: 7 root 3 or simplified = 12.12435565 = 12.12 (2 d.p)
Step-by-step explanation:
tan(30) = 7 / x
x= 7/ tan(30)
x= 7 root 3
What inverse operation should be used to isolate the variable in the equation k − 9 = 10?
Answer:
+9
Step-by-step explanation:
k-9=10
the opposite of -9 is +9
k=19
hope this helps x
brainliest plzz
Help with belll ringer !!!
Answer:13 inches
Step-by-step explanation:
0 Example: Loan payments of $400 due 95 days ago and $700 due today
are to be repaid by a payment of $600 thirty days from today and the
balance in 125 days. If money is worth 6% and the agreed focal date is
125 days from today, what is the size of the final payment?
Answer:
[tex]X=\$519.48[/tex]
Step-by-step explanation:
From the question we are told that
Loan 1 [tex]X_1=\$400[/tex]
Loan 1 due [tex]t_1=95days[/tex]
Loan 2 [tex]X_2=\$700[/tex]
Loan 2 due[tex]t_2=0days[/tex]
Payment [tex]Y=\$600[/tex]
Worth of money [tex]w=6\%[/tex]
Payment due [tex]t=30days[/tex]
Focal date [tex]t_f=125days[/tex]
Generally [tex]\$400[/tex] was due 95days ago
Therefore
[tex]125+90=220days[/tex](total days to consider)
Therefore
[tex]300+400 =700[/tex] is due today
125days left
Given
600 due in 30days
[tex]125-30=95days[/tex]
Generally the Final payment is mathematically given by
[tex]400(1+ 0.06*\frac{220}{365} ) + 700(1+0.06*\frac{125}{365} )=600(1+0.06*\frac{95}{365} )+X[/tex]
[tex]X=1128.9692 - 609.3698[/tex]
Therefore the
[tex]X=\$519.48[/tex]
Lin is solving the inequality 15−x<14. She knows the solution to the equation 15−x=14 is x=1 How can Lin determine whether x>1 or x<1 Is the solution to the inequality?
Answer:
x > 1
Step-by-step explanation:
Given the inequality ; 15 - x < 14
Since the solution to the equation 15−x=14 is x=1 ;
Then we obtain the value of x for which the inequality expression is true :
If x > 1 ; take x = 2
15 - 2 < 14
13 < 14 (true)
If x < 1 ; take x = 0
15 - 0 < 14
15< 14 (not true)
Hence, solution is x > 1
20 subtracted from the product of x and 10
Answer:
10x-20
Step-by-step explanation:
x times 10 is 10x
10x - 20 = 10x - 20
in conclusion you cannot subtract a number from a variable
20 subtracted from the product of x and 10?
answer : 10x-20
5 The area of a rectangular lawn is 255 m². If its length is 15 m, find its perimeter.
I do not know how to find the x in this situation can anyone help?
Answer and Step-by-step explanation:
Essentially, the figure FEHG got scaled by a factor of 1.5, and turned into BADC
So 2.4 times 1.5 is 3.6
3.6 = x
Hope this helps! #teamtrees #WAP (Water And Plant)
Answer:
The x would be 3.6
Step-by-step explanation:
If you see the relation or ration between the ABCD triangle and the EFGH then we can see that the side 2 is multiplied by 1.5 to get to 3. so you do the same thing to 2.4 and multiple that by 1.5 and 3.6.
Help I’m confused big points to who can solve this
Answer:
n = 2
Step-by-step explanation:
Given nx + y = 4, if we rearrange in slope-intercept form: y = -nx + 4
This means that the y-intercept is 4. Point "A" is the y-intercept, which would make OA = 4, and OB = 1/2(4) = 2.
We can now solve for n. The slope here is "-n", also represented by rise/run or OA/-OB = 4/-2 = -2.
-n = -2,
n = 2
