Answer:
(i) x + 3 = 0
L.H.S. = x + 3
By putting x = 3,
L.H.S. = 3 + 3 = 6 ≠ R.H.S.
∴ No, the equation is not satisfied.
(ii) x + 3 = 0
L.H.S. = x + 3
By putting x = 0,
L.H.S. = 0 + 3 = 3 ≠ R.H.S.
∴ No, the equation is not satisfied.
(iii) x + 3 = 0
L.H.S. = x + 3
By putting x = −3,
L.H.S. = − 3 + 3 = 0 = R.H.S.
∴ Yes, the equation is satisfied.
(iv) x − 7 = 1
L.H.S. = x − 7
By putting x = 7,
L.H.S. = 7 − 7 = 0 ≠ R.H.S.
∴ No, the equation is not satisfied.
(v) x − 7 = 1
L.H.S. = x − 7
By putting x = 8,
L.H.S. = 8 − 7 = 1 = R.H.S.
∴ Yes, the equation is satisfied.
(vi) 5x = 25
L.H.S. = 5x
By putting x = 0,
L.H.S. = 5 × 0 = 0 ≠ R.H.S.
∴ No, the equation is not satisfied.
(vii) 5x = 25
L.H.S. = 5x
By putting x = 5,
L.H.S. = 5 × 5 = 25 = R.H.S.
∴ Yes, the equation is satisfied.
(viii) 5x = 25
L.H.S. = 5x
By putting x = −5,
L.H.S. = 5 × (−5) = −25 ≠ R.H.S.
∴ No, the equation is not satisfied.
(ix) = 2
L.H.S. =
By putting m = −6,
L. H. S. = ≠ R.H.S.
∴No, the equation is not satisfied.
(x) = 2
L.H.S. =
By putting m = 0,
L.H.S. = ≠ R.H.S.
∴No, the equation is not satisfied.
(xi) = 2
L.H.S. =
By putting m = 6,
L.H.S. = = R.H.S.
Step-by-step explanation:
Question 7
What is the median of the following data set?
61,57, 49, 60, 45, 51, 57, 60, 53, 57, 55, 48, 65, 52
53
m
please solve rhis ques
Answer:
The highest common factor is (a + b)
Step-by-step explanation:
We start by making a factorization of the first expression
By using the difference of two squares, we can have it as;
a^2 - b^2 = (a + b)(a-b)
For the second expression, we already have;
(a + b)^2 = (a + b)(a + b)
What this mean is that (a + b) is common to both expressions and we have it as the highest common factor
PLEASE ANSWER QUICKLY
Answer: 17
Step-by-step explanation:
Answer:
B) 17
Step-by-step explanation:
Prime numbers are numbers that are not products of two smaller natural numbers. Everything except 17 is not prime cuz they can be derived from multiplying other numbers but 17 cannot be.
What are the solutions of the equation 9x4 - 2x2 - 7 = 0? Use u substitution to
solve
HELP ME PLEASE!!! I’ll mark brainly
Answer:
yes
Step-by-step explanation:
Answer:
yes
Step-by-step explanation:
yes
Find a pair of complementary angles. Show work to prove they are complementary.
Answer:
Hello! answer: 45 and 45 is a complementary angle and 60 and 30 is a complementary angle
Step-by-step explanation:
Complementary angles are just angles that add up to 90 degrees so... 45 + 45 = 90 60 + 30 = 90 so that is how those are complementary angles.
Hope that helps!
Answer:
angle QRT/angle VRT and angle SRW/angle WRV
Step-by-step explanation:
QRT and VRT: Both angles are 45 degrees, adding those degrees together gets you 90 degree angles meaning that they are complementary.
SRW and WRV: 60 plus 30 is equal to 90 making them complementary angles as right angles are 90 degrees
Can someone please help me in this question
Step-by-step explanation:
a) Let y = f(x) = 3x - 2x^2
f(-2) = 3(-2) - 2(-2)^2 = p
= -6 - 8
= -14
= p
f(2.5) = 3(2.5) - 2(2.5)^2 = q
= 7.5 - 12.5
= -5
= q
b) graphing
c) From the graph, you should be able to verify the following:
i) f(0.5) = 3(0.5) - 2(0.5)^2 = 1
ii) 0.5 = 3x - 2x^2 or x = 1.3, 0.2
iii) the maximum occurs at
f(0.75) = 1.125
d) the equation for the line of symmetry is x = 0.75
What percent of 21 is 105?
Answer:
20%
Step-by-step explanation:
21/ 105
= 0.2 x 100
20%
SA = 2pi * r ^ 2 + 2pi * r * h (Use 3.14 for .) How much metal is needed to create a trash can with a height of 4 feet and a base radius of 1 foot? (Find the surface area of the cylinder.) pi square feet Do NOT round your answer.
Answer:123
Step-by-step explanation:
Rebecca paid $16.90 to place an advertisement in a local
newspaper. The newspaper charged $4.50 set up fee and $0.40
per word. How many words were in Rebecca's advertisement?
Answer:
31 words
Step-by-step explanation:
because the set up fee is 4:50$, minus this from the price Rebecca payed
16.90-4.50=$12.40
now divide this amount by $0.40 in order to get her word count
12.40÷0.40=31
Please help me A line that includes the point (3, 3) has a slope of 4. What
is its equation in slope-intercept form?
Answer:You can do this two ways: Either use the slope intercept form
y = mx + b with slope m=-2 so y = -2x +b
From that use x=5, y = -3 to solve for b
-3 = -2(5) + b
-3 = -10 + b
10-3 = b
7 = b
Your equation is: y = -2x + 7
OR
Use the point slope formula: y - y1 = m(x-x1)
with m = -2, (x1, y1) = (5,-3)
y-(-3) = -2(x-5)
y + 3 = -2x + 10
y = -2x + 10 - 3
y = -2x + 7
Step-by-step explanation:
4x + x/y for x=12 and y=6
Answer:
4x+2
Step-by-step explanation:
All you have to do is simplify 12/6
And that equals 2.
Distance between -12 and
12
Answer:
24
Step-by-step explanation:
what is y -5= 2/3(x-2) in slope intercept form??
Answer:
y = 2/3x + 3 2/3
Step-by-step explanation:
slope intercept form: y = mx + b
isolate the y => y = 2/3(x - 2) + 5 => y = 2/3x - 4/3 + 5 => y = 2/3x + 3 2/3
Lupe needs to make a poster that is 2 m by 4 m for the big game. The cost of the paper is $1.75. Later she needs another poster with dimensions 1 m by 2 m. What is the paper for this poster likely to cost
Answer:
$0.42
Step-by-step explanation:
Given data
Dimension
Length=4m
Width=2m
Cost= $1.75
Area= 4*2= 8m^2
Cost per area=1.75/8
Cost per area=$0.21 per m^2
The new poster's dimension
Lenght =2m
Width= 1m
Area= 2*1= 2m^2
Hence if a square meter cost $0.21
Then 2 square meter will cost x
cross multiply
2*0.21=x
x=$0.42
Hence the new poster will cost $0.42
find the value of X and Y triangle BLT is congruent to Triangle JFK
Using the order of the letters in the triangles find the corresponding sides:
BL is similar to JF
LT is similar to KF
BT is similar to JK
Find the scale between LT and KF
9/12 = 3/4
The smaller triangle is 3/4 the size of the lager one.
This means BT = 3/4(JK) = 3/4(4) = 3
So x = 3, so side BL = 2x = 2(3) = 6
Now to solve for y:
BL is 3/4(JF)
6 = 3/4(y)
Solve for y by dividing both sides by 3/4
Y = 6/(3/4)
Y = 8
X = 3, y = 8
Help if you can:
Which situation can be represented by the
integer 10?
a) A temperature drop of 10 F
b) 10 seconds before takeoff
c) A growth of 10 centimeters
d) A fall of 10 feet
Can someone help me
Answer:
36
Step-by-step explanation:
4 x (2 + 7) = 36
What is the area of a sector with radius 6" and measure of arc equal to 120°?
12 π sq. in.
36 π sq. in.
6 π sq. in.
4 π sq. in.
Answer:
12 π sq. in.
Step-by-step explanation:
Circumference c = 2πr
Arc Length s = [tex](\frac{0^0}{360^0})[/tex] (2πr)
s = [tex](\frac{120}{360})[/tex] * 2π * 6 = 4π = 12
Mark me as brainliest!!
The slideat the playground has a height of 6ft. The base of the slide measured on the ground is 8ft. What is the length of the slide?
Answer:
10 ft
Step-by-step explanation:
The length of the slide can be determined using Pythagoras theorem
The Pythagoras theorem : a² + b² = c²
where a = length
b = base
c = hypotenuse
6² + 8² =
36 + 64 = 100
c = √100
c = 10
Susanne checks the temperature at 11:00 a.m. She notices that, if the
temperature rises by 6 more degrees, it will break the record high temperature
for that day, which is 84 degrees.
Answer:
If you need the temperature at 11:00 am it is 78 degrees.
Step-by-step explanation:
84-6=78 degrees
The mathematical sentence that expresses the information is t + 8 > 82
What is Inequality?A relationship between two expressions or values that are not equal to each other is called 'inequality.
The current temperature is represented by t.
If the temperature rises by 8 degrees, then the new temperature would be t + 8.
The record-high temperature for that date is 82 degrees.
If t + 8 is greater than 82, then the temperature would break the record-high temperature for that date.
Therefore, the mathematical sentence that expresses the information above is t + 8 > 82
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Susanne checks the temperature at 11:00 a.m. She notices if the temperature
rises by 8 more degrees, it will break the record-high temperature for that
date, which is 82 degrees.
If t= the temperature in degrees at 11:00 a.m., which mathematical sentence
expresses the information above?
A. t - 8<82
B. t + 8 < 82
O C. 1-8 > 82
D. † + 8 > 82
Calculate the length of side x.
Give your answer correct to 3 significant figures.
Answer:
8.58cm
Step-by-step explanation:
Since tanθ = opp/adj,
tan43 = 8/x
x = 8/tan43
= 8/0.93251508
= 8.57894973666
≈ 8.58
3/2 ( x - 6 ) = -3
What's x?
A. x = -8
B. x = 2
C. x = 4
D. x = 9
Answer:
The answer is C.
Step-by-step explanation:
Had this on a quiz.
The length of the diameter, d, of the circle is 24 cm. Find the length of the radius, r, of the circle.
What is true about this cylinder?
Answer:
2
Step-by-step explanation:
.....................
The sides of a triangle are 3 consecutive odd integers and the shortest side is 20% of the perimeter of the triangle. What is the perimeter of the triangle?
Answer:
15 units
Step-by-step explanation:
The terms of an odd integer are given by 2n - 1. Since the sides of the triangle are three consecutive odd integers, let them be 2n - 1, 2(n + 1) - 1 and 2(n + 2) - 1 respectively, where 2n - 1 is the shortest side
Let P = perimeter of triangle = 2n - 1 + 2(n + 1) - 1 + 2(n + 2) - 1
= 2n - 1 + 2n + 2 - 1 + 2n + 4 - 1
= 2n - 1 + 2n + 1 + 2n + 3
= 2n + 2n + 2n - 1 + 1 + 3
= 6n + 3
Since the shortest side is 20% of the perimeter of the triangle, we have that
2n - 1 = 20%(6n + 3)
2n - 1 = 0.2(6n + 3)
expanding the bracket, we have
2n - 1 = 1.2n + 0.6
subtracting -1.2n and adding +1 to both sides, we have
2n - 1.2n = 1 + 0.6
0.8n = 1.6
dividing both sides by 0.8, we have
n = 1.6/0.8
n = 2
Since P = 6n + 3, substituting n = 2, we have
P = 6(2) + 3 = 12 + 3 = 15 units
Please help besties!
Multiplying whole numbers and fractions
Answer:
What is the question here?
Step-by-step explanation:
Answer:
uhh excuse me sir you dont have the paper or anything for me to answer but thanks for the points
Step-by-step explanation:
add the paper
Step-by-step explanation:
The length of one piece of string is 1/5m. What will be the total length of 4 such pieces of string?
Answer: [tex]\dfrac{4}{5}\ m[/tex]
Step-by-step explanation:
Given
The length of one piece of string is [tex]\frac{1}{5}\ m[/tex]
So, the length of 4 pieces is the addition of four-piece length.
[tex]\Rightarrow L=\dfrac{1}{5}+\dfrac{1}{5}+\dfrac{1}{5}+\dfrac{1}{5}\\\\\Rightarrow L=4\times \dfrac{1}{5}\\\\\Rightarrow L=\dfrac{4}{5}\ m[/tex]
What is 972 written in standard form
Answer:
we will write 972 in standard form
Step-by-step explanation:
Standard form of a given number 972 is equals to 9.72 × 10².
What is standard form?" Standard form is defined as the mathematical expression, number, any equation , quantity with certain rules defined for it."
According to the question,
Given number = 972
Standard form of writing a number is
Given number should be express as a decimal number between 1.0 to 10.0
multiply by power of 10.
Standard form of 972 = 9.72 × 10²
Hence , standard form of a given number 972 is equals to 9.72 × 10².
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