Answer:
r= 10
Step-by-step explanation:
30 - 20 = 10
Addition Property: For all real numbers x,y, and z , if x=y , then x+z=y+z .
eflexive Property: For all real numbers x , x=x . A number equals itself.
Subtraction Property: For all real numbers x,y, and z , if x=y , then x−z=y−z .
so its subtraction property
Evaluate x2 when x =5
Answer:
10
Step-by-step explanation:
If x=5 then
Plug in the x
(5)2 then multiply
(5)2=10
A store owner buys a sweater at $12 and sells it for $15. What was the
percentage of the price increase?
Answer:
it would be a 25% increase.
Step-by-step explanation:
15-12 / 12 * 100 =
3/12 * 100 = 25
PLEASE HELP ASAP WILL GIVE BRAINLEAST!!!!!!!
Select all the pairs that are alternate interior angles.(multiple choice)
A-∠5 and ∠4
B-∠6 and ∠5
C-∠2 and ∠8
D-∠8 and ∠1
E-∠3 and ∠5
Answer:
Answer is C and E!
-Sumin <3
One of the legs of a right triangle measures 2 cm and its hypotenuse measures 18 cm.
Find the measure of the other leg. If necessary, round to the nearest tenth.
Answer:
17.9
Step-by-step explanation:
The height, h, of an object that is projected straight downward from a ledge 500 feet above the ground with initial velocity 10 feet per second is given by the equation h = 500 - 10t - 16t^2 where t = time in seconds. After how many seconds will the object be 100 feet above the ground?
A. 2.21 seconds
B. 3.85 seconds
C. 4.70 seconds
D. 40 seconds
A set of biology exam scores are normally distributed with a mean of 70 points and a standard deviation of six points X equal the score on a randomly selected exam from the set find P(X< 73)
Answer: .69
Step-by-step explanation:
Answer on khan
We can write the value in the range P(64 < {x} < 76) as 0.68.
What is standard deviation?In statistics, the standard deviation is a measure of the amount of variation or dispersion of a set of values.
Given is that a set of biology exam scores are normally distributed with a mean of 70 points and a standard deviation of six points X equal the score on a randomly selected exam from the set.
It is given that -
μ = 70
σ = 6
For the range of {x}, we can write -
(μ - σ) < {x} < (μ + σ)
64 < {x} < 76
We can write the range of {z} value as -
(64 - 70)/6 < {z} < (64 + 70)/6
- 1 < {z} < + 1
Now -
P(64 < {x} < 76) = P(x < 76) - P(x < 64) = 0.84 - 0.15 = 0.68
Therefore, we can write the value in the range P(64 < {x} < 76) as 0.68.
To solve more questions on standard deviation, visit the link below -
https://brainly.com/question/23907081
#SPJ2
please help i need this rn. no spammers please.
Answer:
x = -6 & y= 42
Step-by-step explanation:
I hope this helps :)
x = 6, y = -42
Substitution:
-7x = -5x - 12
-2x = -12
x = 6
When x = 6,
y = -7(6) = -42
Solve for X when......................
Answer:
-2 2
3 0
-1 -5
Step-by-step explanation:
-2 + 0 = -2 -5 + 7 = 2
1 + 2 = 3 0 + 0 = 0
3 + (-4) = -1 - 4 + (-1) = -5
what is volume of a trapezoid prism?
Answer:
If the prism length is L, trapezoid base width B, trapezoid top width A, and trapezoid height H, then the volume of the prism is given by the four-variable formula: V(L, B, A, H) = LH(A + B)/2. In other words, multiply together the length, height, and average of A and B.
Step-by-step explanation:
Choose the correct simplification of (5xy^7)^2(y^2)^3.
Answer:
25x^2y^20
Step-by-step explanation:
Which statement(s) describe perpendicular lines? Choose ALL that apply.
A. Perpendicular lines never meet or cross.
B. Perpendicular lines form a 90 degree angle.
C. Perpendicular lines intersect.
Write a story that can be represented by the equation
y=x+ 1x
what fraction in lowest terms represents the valur of c in the equation 3(4x -6) = -3(5 -2x)
Answer:
3(4x - 6) = - 3(5 - 2x)
12x - 18 = - 15 +6x
12x - 6x = - 15 +18
6x = 3
x = 1/2
I NEED HELP FAST PLEASE :)
Answer:945
Step-by-step explanation:
can y'all help me with math I hate it
Answer:
Step-by-step explanation:
the first one
Answer:
1st one
Step-by-step explanation:
0. The weight of an object on the Moon is about 16.5% of its weight on Earth. The weight of an astronaut on the Moon is 24.75 pounds. How much does the astronaut weigh on Earth?
Answer: 150 pounds
Step-by-step explanation:
Let the the astronaut weight on Earth be represented by x.
Based on the information given in the question, thus can be formed into an equation as:
16.5% of x = 24.75
16.5% × x = 24.75
16.5/100 × x = 24.75
0.165x = 24.75
x = 24.75/0.165
x = 150 pounds
The astronaut weigh 150 pounds on Earth.
Determine the common factors and HCF for each of the following terms.
b) 2b, 3b
e) 5bc, 2c2, 3cd
f) 4a2b, 8b2c, 6bcd
Help please and explanation..
Answer:
b) b
e) c
f) 2b
Step-by-step explanation:
you look for numbers that can divide them all at once
This is a required question
2) Find the measure of Exterior Angle A.*
92
43
1A,
Louan
PLEASE HELP
Which of the following are solutions of the equation (2x-3) (3x+5)=-14
Answer:
I love algebra anyways
The ans is in the picture with the steps how i got it
(hope this helps can i plz have brainlist :D hehe)
Step-by-step explanation:
Identify the slope (m) given the equation of the line.
y- 1 = -3(x + 2)
I need help please
Sam wants a television.He can either buy or rent it.The cost of buying it is $960.Sam would pay a deposit of 30% followed by 12 equal month after payments.
1)Calculate the deposit. 2)Calculate each monthly payment.
Answer:
1. deposit = $288
2. monthly payments = $56
Step-by-step explanation:
960 x 0.3 = 288
960 - 288 = 672
672/12 = 56
A designer lamp costs £475
It is reduced by 30% in a sale
How much does the lamp now cost?
Answer:
$332.50 is the new discounted price
Step-by-step explanation:
30% of 475
30/100 x $475. 00
= $142.50
$475.00-$142.50=$332.50
and thats the answer
Find the value
of 6y^2 - 24y - 51 when y=-2
Answer:
21
Step-by-step explanation:
6(y^2) - 24y -51 = 6 4 - 24y - 51
(6 4) - (24y) - 51 = 24 - -48 - 51
(24 - -48) - 51 = 72 - 51
72 - 51 = 21
I need help this is extremely hard
Answer:
what variable do you want to find?
Step-by-step explanation:
Sandra is buying new carpet for the floors of her house. The cost depends on the area of the floors. Which is the dependent variable, and which is the independent variable?
A. The dependent variable is the cost, and the independent variable is the area of the floors.
B. The dependent variable is the number of walls in the house, and the independent variable is the cost.
C. The dependent variable is the cost, and the independent variable is the number of walls in the house.
D. The dependent variable is the area of the floors, and the independent variable is the cost.
Answer:
A.The dependent variable is the cost, and the independent variable is the area of the floors.
Step-by-step explanation:
Because I had a quiz with the same question and got it right, and because the paragraph says "The cost depends on the area of the floors."
Answer:
A.
Step-by-step explanation:
"The cost depends on the area of the floors"
The independent variable is the cause and the dependent variable is the effect. Took the test.
shawn bought a beautiful house for 350,000. her loan was for 30 years at 6.5% APR. how much money will she
end up paying in interest?
answer:
A.$68,250
B.$682.50
C.$68.25
D.$682,500
Answer:
D
Step-by-step explanation:
I am not sure if my answer is right, this is what I did :-
350,000 x 30 = 10,500,000
10,500,000 x 6.5% = 682,500
Tell me if I was right. Thank you !!
i have to find the value of x please help me will give brainliest to correct answer
Answer:
C. x = 5
Step-by-step explanation:
48 = 7x + 13
-13 -13
35 = 7x
5 = x
what's the answer to 9 x (-6)=
Answer:
-54
Step-by-step explanation:
a positive times a negative is a negative always
Answer:
Answer: -54
Multiply them and add a negative symbol
Help I will give brainliest or however it’s spelled
Answer:
uuuummmmmm go to khanacademy but i think 140
Step-by-step explanation:
If the RADIUS of a circle is 9 meters, then the DIAMETER is? *
25 points
4.5 meters
12 meters
18 meters
27 meters
