Answer:1 (CIE 2012, s, paper 11, question 7)
The table shows values of variables
x
and
y
.
x
1
3
6
10
14
y
2.5
4.5
0
–
20
–
56
(i) By plotting a suitable straight line graph, show that
y
and
x
are related by the equation
y
=
A
x
+
B
x
2
,
where
A
and
B
are constants. [4]
(ii) Use your graph to find the value of
A
and of
B
.
[4]
2 (CIE 2012, s, paper 22, question 7)
The table shows experimental values of variables
x
and
y
.
x
5
30
150
400
y
8.9
21.9
48.9
80.6
(i) By plotting a suitable straight line graph, show that
y
and
x
are related by the equation
y
=
a
x
b
,
where
a
and
b
are constants. [4]
(ii) Use your graph to estimate the value of
a
and of
b
.
[4]
3 (CIE 2012, w, paper 11, question 10)
The table shows values of the variables
x
and
y
.
x
∘
10
30
45
60
80
y
11.2
16
19.5
22.4
24.7
(i) Using the graph paper below, plot a suitable straight line graph to show that, for 10°
≤
x
≤
80°,
√
y
=
A
sin
x
+
B
,
where
A
and
B
are positive constants. [4]
(ii) Use your graph to find the value of
A
and of
B
.
[3]
(iii) Estimate the value of
y
when
x
=
50.
[2]
(iv) Estimate the value of
x
when
y
=
12.
[2]
4 (CIE 2012, w, paper 22, question 8)
Step-by-step explanation:
math question
i kind of need this done quicker, however no rush..! :)
x=-2y
x-y=9
Answer:
(6,-3) or x=6 y= -3
Step-by-step explanation:
Find the value of x.
Round to the nearest tenth.
х
16
30°
30
x = [?]
need help asap:(
Answer:
[tex] x\approx 18.0[/tex]
Step-by-step explanation:
Here, a = 30, b = 16, C = x
By law of cosines
[tex] {c}^{2} = {a}^{2} + {b}^{2} - 2ab \cos C \\ \\ {x}^{2} = {30}^{2} + {16}^{2} - 2 \times 30 \times 16 \: cos 30 \degree \\ \\ {x}^{2} = 900 + 256 - 960 \times \frac{ \sqrt{3} }{2} \\ \\ {x}^{2} = 1156 - 480 \times \sqrt{3} \\ \\ {x}^{2} = 324.615612 \\ \\ x = \sqrt{324.615612} \\ \\ x = 18.0170922 \\ \\ x \approx \: 18.0[/tex]
4x +7y =-14
X + 4y =-8
Answer:first one is 5 and second one is -4
Step-by-step explanation:
A rectangle has a perimeter of 238 meters and a length of 67 meters what is the area of the rectangle
Answer:
3,484 meters squared
Step-by-step explanation:
Since it’s a rectangle, opposite sides are the same length. This means 2 of the sides are 67 meters each, since the length of the rectangle is 67 meters. To find the width, add the 2 sides together that we know the length of (in this case it would be 67+67) and subtract it from the total perimeter (238-[67+67]). Take the result (104) and divide it by 2 (104÷2=52). Now that we know the width is 52 meters, you can find the area by multiplying the length times the width (67*52=3,484 meters)
Remember that the perimeter is the total length around the outside of the shape, and the area is the space inside of the shape
I’m not good at explaining things but I hope this helps!
I really need help with this does anyone mind expkaining
Answer:
I remember seeing this Question sombody answered 108 the 3rd option and it was correct but I chose 13 and it was wrong lol good luck
the length of a rectangle is 1 more than 4 times the width. the perimeter is 92 in. what is the length and width.
Step-by-step explanation:
the 1st side length is 4x+1 if x is the width. 2(length)+2(width)=perimeter
2(4x+1)+2x=92
8x+2+2x=92
10x=90
x=9
width=x=9
length=4x+1=4(9)+1=37
Hope that helps :)
Can you please help me solve this
Which of the expressions below has a 1 in the tenths place of the product? Select all that apply. A) 18.3 x 7 B) 6.5 x 4.31 C) 8.54 x 2.3 D) 5.4 x 2.8
Answer: A) 18.3 x 7 and D) 5.4 x 2.8
Step-by-step explanation:
A) 18.3 x 7 = 128.10
We can infer that 1 is in the tenths place.
B) 6.5 x 4.31 = 28.015
We can infer that 1 is not in the tenths place but rather the hundredths place.
C) 8.54 x 2.3 = 19.642
We can infer that 1 is not in the tenths place.
D) 5.4 x 2.8 = 15.12
We can infer that 1 is in the tenths place.
If a bank account doubles in size every 5 years, then by what percent does it grow after only 3 years?
Answer:
1.516
Step-by-step explanation:
A Person Places Rs 500 in a Accout that is intrest compounded continuously Assuming no additional deposits or withdrawals, How much will be in the Account After seven years If the interest rate is Constant 8.5 percent for the first four year and a constant 9.25 percent for the last three years. So you get The percent 1.516
if you answer i will give you brainliest
Answer:
OK hiiiiiiiiiiiiiiiii.
Can anyone help? ASAP PLS
Answer:
D is the correct
Step-by-step explanation:
i am sure (:
Select all ordered pairs that satisfy the function y = 5x + 5.
A.
(5, 30)
B.
(-3,-10)
C.
(-7, 30)
D.
(-7, -30)
Answer:
its D
Step-by-step explanation:
Use the table to solve. Describe the pattern for the powers of 2.
determine the missing angle
Answer:
x=142
Step-by-step explanation:
so x and 142 equal eachother because they are alternate exterior angles!
set up the equation so we can solve for x
x=142
Answer:
Step-by-step explanation:
Alternate exterior angles are equal.
So, x = 142
The first 3 figures in a pattern are shown.
Which of the following functions represents f(n), the number of small squares in figure n?
A f(n) = 2n?
B. f(n) = (n + 4)2
C. f(n) = 50 + 4
D f(n) = n2 + 4
Javier can paint a room in 4 hours. Jasmine needs 6 hours to paint the same
room. Which equation would you use to determine how long it takes them to
paint the room if they work together?
Answer:
idfk im tryna find out as well
Step-by-step explanation:
boom bam bop, botta bop boop........ pow
Solve the following equation. Write your answer in simplest form,
2/5x+4= 16
Answer:
x=30
Step-by-step explanation:
Answer:
x=30
Step-by-step explanation:
2/5x+4=16
First: subtract 4 from both sides, 2/5x=12
Second: multiply by 5 on each side, (it cancels out the fraction) to get 2x=60
Third: divide by 2 on both sides, x=30
The total price for a computer and a
printer was $1039. If the computer
cost $750, how much did the printer
cost?
Answer:
$289
Step-by-step explanation:
If you know the cost of one of the two items, you can subtract that item from the total in order to find the price of the second item
So: total price - computer price = printer cost
So: $1039- $750 = $289
The printer is $289
12, 21, 30 and 39 are the first four terms in a sequence
Write an expression for the nth term of this sequence
Answer:
12, 21, 30, 39, 48, 57, 66, 75, 84.
Ninth term is 84.
Step-by-step explanation:
The rule for this sequence is "add 9".
So, using this rule, we can do......
12, 21, 30, 39, 48, 57, 66, 75, 84.
Remember to add 9 each time!
Best of luck :3
PLEASE HURRY
Which of the following is a cost homeowners insurance does not protect?
a.
The cost of repair or replacement of a home lost in a natural disaster.
b.
Additional living expenses required while your home is repaired after a disaster.
c.
Replacement costs for all contents in your home, including high cost electronics.
d.
The cost of medical expenses incurred by somebody getting injured on your property.
Answer:c
Step-by-step explanation:
While sorting some change into piggy banks, Gabby put 58 coins in the first piggy bank, 78 coins in the second piggy bank, 98 coins in the third piggy bank, and 118 coins in the fourth piggy bank. What kind of sequence is this?
Answer: Whenever Gabby moves to different piggy banks, the banks will have 20 more coins than the one before.
Step-by-step explanation:
1 58
2 78
3 98
4 118
78-58=20
98-78=20
118-98=20
Whenever Gabby moves to different piggy banks, the banks will have 20 more coins than the one before.
Answer:
Step-by-step explanation:
20 more coins srry if this didn’t help
HELP: find the measure of the arc or angle indicated, assume that lines which appear tangent are tangent
Answer:
3) B. 65°4) D. 120°Step-by-step explanation:
Question 3Angle formed outside is half of the difference of intercepted arcs
m∠F = 1/2(( 360° - 115°) - 115°) = 1/2(130°) = 65°Correct choice is B
Question 4Angle formed by two chords is half of the sum of intercepted arcs
m∠WTU = 1/2(105° + 135°) = 1/2(240°) = 120°Correct choice is D
Ethen is ‘x’ years old. Raj is 8 years older than Ethen. Find the sum of their ages in 6 years time.
Answer:
The sum of their ages in 6 years time is (2x+20) years.
Step-by-step explanation:
Given that,
Ethen is ‘x’ years old.
Raj is 8 years older than Ethen.
Raj's age = (x+8) years
We need to find the sum of their in 6 years.
After 6 years,
Ethen's age = (x+6) years
Raj's age = (x+8)+6
= (x+14) years
Sum of ages = (x+6) + (x+14)
= 2x+20
Hence, the required answer is (2x+20) years.
A store sells an item for $35 after a 25% markup. What is the price the store paid?
$8.75
$28.00
$43.75
$140.00
Answer:
The store paid $28.00
Step-by-step explanation:
28 times .25(25%) is 7 and 28+7=35
If 400,000 tourists contribute $67 million to a local economy, how much would 600,000 tourists contribute?
Answer:
[tex]100.5\ \text{million}[/tex] is contributed by 600,000 tourists.
Step-by-step explanation:
Given that,
400,000 tourists contribute $67 million to the local economy.
We need to find how much would 600,000 tourists contribute.
400,000 tourists = $67 million
1 tourist = [tex](\dfrac{67}{400,000 })\ \text{million}[/tex]
So, 600,000 tourists contribution is :
[tex]600000\ \text{tourists}=(\dfrac{67}{400,000 })\times 600000\ \text{million}\\\\=100.5\ \text{million}[/tex]
Hence, [tex]100.5\ \text{million}[/tex] is contributed by 600,000 tourists.
factorise 8bx -15ay-6by +20ax by using regrouping
Answer:
(2b+ 5) (4x-3y)
Step-by-step explanation:
8bx -15ay-6by +20ax
2b (4x -3y) +5 (4x-3y)
(2b+ 5) (4x-3y)
Solve for Х.
16
20
A 25.6
В
6
С
12
D 15
Answer:
12 which is on C
Step-by-step explanation:
use pathogoras theorem
a^2+b^2=c^2
16^2+b^2=20^2
256+b^2=400
b^2=400-256
b^2=144
b= square root of 144
b= 12
30 [tex]30\geq 5[/tex]
CAN SOMEONE PLEEAASE HELP WITH ME with these six questions I will love you forever
Answer:
1. Congruent(SAS)
2. Congruent(AAS)
3. Congruent(HL)
4. Not congruent
5. Congruent(SSS)
6. Congruent(AAS)
What is the 9th term of (2x+3)^10
PLEASEEEEEEE ANSWERRRRR
Answer:
1.668x10^13
Step-by-step explanation: