Answer:
15.4
Step-by-step explanation:
3(9+3⋅8)−23
3(12.8)-23
38.4-23
15.4
So the answer is15.4
Answer:
76
Step-by-step explanation:
3(9+24)-23
27+72-23
76
Calculate the mean of: 4.6, 3, 8.1, 9, 12, 3, 9, 3.5, 7, 3.
6.22
5.8
9
3
Answer:
7.3
Step-by-step explanation:
The mean of 4.6, 3, 8.1, 9, 12, 3, 9, 3.5, 7, 3. 6, 22 , 5.8 , 9 , 3 is 7.3
Answer:
5.8
Step-by-step explanation:
First put all the numbers in order from least to greatest.
3, 3, 3, 3.5, 4.6, 7, 8.1, 9, 9, 12
There are two middle numbers, 4.6 and 7. Average them to get 5.8.
z+14.5=5.4
z=
-14=c-10
c=
Answer:
x+2y=4 , x−y=−3
6x2+3y2=12, x+y=2
x+y=4, x−y=2
Step-by-step explanation:
The chosen topic is not meant for use with this type of problem.
Select all of the true statements. Group of answer choices π is the constant of proportionality relating the diameter of a circle to its circumference. π is the area of a circle of diameter 1. π is the circumference of a circle of radius 1. π is the circumference of a circle of diameter 1. π is the constant of proportionality relating the radius of a circle to its area. π is the area of a circle of radius 1.
Answer:
π is the constant ...... circle to its circumference
π is the area .... radius 1
Step-by-step explanation:
π is a mathematical constant, defined as ratio of circle's circumference to its diameter.
π is area of circle of radium 1. Area = π r^2 = π (1)^2 = 1
please help i’ll give 14 points
WILL MARK BRAINIEST! find the x intercept of each line defined below compare their values. NOTE- please state what the intercept of line a and b is as well as which one is greater. Thanks
Answer:
im pretty sure its 2
the intercept would be -2/2
Step-by-step explanation:
The graph below shows the cost of pens based on the number of pens in a pack. What would be the cost of one pen?
$0.57
$1.75
$5.50
$6.50
Answer:
$1.75
Step-by-step explanation:
Honestly, you don't really have to pay attention to the other numbers or ratios on the graph until you think you found your answer. Pay attention to whichever ratio you choose and follow these steps:
1. Identify which number is the cost and which is the amount of pens bought
2. Set it up as a division problem by using the cost and the dividend and the amount of pens as the divisor
3. After you have your answer, plot your ratio of 1:(your product) and if the line that was graphed is straight, you are correct.
PS. I used the ratio (2:3.5) to solve this problem
m= -(4+m)+2
solve for m
Answer:
m = -1
Step-by-step explanation:
m = - (4 + m) + 2
m = -4 - m + 2
m = -2 - m
+m +m
2m = -2
/2 /2
m = -1
Hope this helps!
Answer:
m=-1
Step-by-step explanation:
m = - ( 4 + m ) + 2
m - 2 = - ( 4 + m )
m - 2 = - 4 - m
m + m = - 4 + 2
2 m = - 2
m = - (1/2)
m = - 1
Tannis's first machine could throw a car 272727 meters. She studied her first machine and built a better one. Her second machine could throw a car 777 times as far.
How far does the second machine throw a car?
Answer:
The rate of change of the distance between the cars at that instant is 5.46 meters per second
Step-by-step explanation:
Speed of first car = 7 m/s
Speed of second car = 3 m/s
At instant, distance of first car from intersection = 5 meters
distance of second car from intersection = 12 meters
Therefore, we have
Distance between both cars at intant = √(12² + 5²) = 13 m
Rate of change of distance is given by;
2ddd/dt = d(x² + y²)/dt = 2xdx/dt + 2ydy/dt
= 26dd/dt = 2×5×7 + 2×12×3 = 142
dd/dt = 142/26 = 5.46 m/s.
That is the rate of change of the distance between the cars at that instant = 5.46 meters per second.
The closure properties of polynomials are similar to other closure properties. Which closure properties are similar to the closure properties of polynomials?
Answer:
The closure property of integers
Step-by-step explanation:
The addition closure properties of integers are similar
The closure property when adding integers are similar
It is similar because, when we add two polynomials, we get another polynomial
Also, when we add two integers, we get another integer
So we can conclude that the closure property of adding integers is similar
Please help me with is problem
Answer:
Its A :)
Step-by-step explanation:
A pizza company offers a 5-topping large pizza for $22. They also offer a 3-topping large pizza for $18. Write a linear equation to represent the scenario. Be sure the equation is in slope-intercept form.
Answer:
Im not really sure, how many equations do you need? Do you one whole equation or 2?
What is -1 3 10 + (-3.8)?
Answer:
1
Step-by-step explanation:
1
Moutain climber A is at altiude of 250 feet and is descending at a rate of 30 feet per hour. Moutain climber B is at an altitude of 400 feet and is descending at a rate of 50 feet per hour. In how many hours will the altitude of moutain climber B be lower than the altitude of moutain climber A?
Answer:
the altitude of mountain climber b will be lower than the altitude of mountain climber A with number of hours greater than 7.5hrs.
Step-by-step explanation:
This talks about equalities in math,
We are told about Moutain climber A is at altiude of 250 feet and is descending at a rate of 30 feet per hour, this can be interpreted as
250 - 30h
Moutain climber B is at an altitude of 400 feet and is descending at a rate of 50 feet per hour, this can be interpreted as
400 - 50h
We were now asked how many hours the altitude of mountain climber b be lower than the altitude of mountain climber A, we can interpret this as
(400 - 50h) < (250 - 30h )
We can collect the like terms here
-50h + 30h < 250 - 400
-20h < - 150
The negatives sign can cancelled out, we have
Note that multiplying or dividing by a negative THE INEQUALITY SIGN MUST BE FLIPPED
20h > 150
h > 150/20
h > 7.5
Therefore, the altitude of mountain climber b will be lower than the altitude of mountain climber A with number of hours greater than 7.5hrs.
Solve 1=4|x-2|+2
Help please
Answer:
No solution
Step-by-step explanation:
1=4|x-2|+2
-4|x-2| + 1 = 2
-4|x-2| = 1
False for every value of x
Since absolute value gives only a positive value, the -4 would always make that number negative which doesn't work
Describe the transformations that were applied to the parent function
f(x)=|x|-5
Answer:
Shifted 5 units down
Step-by-step explanation:
In the equation shown, what is the value of n?
9^7/9^n=9^2
PLEASE HELP
Answer:
n=5
Step-by-step explanation:
All of the bases are 9 so you can set the exponents equal to each other.
Exponents in a fraction mean subtraction so 7-n = 2
-n=-5
n=5
IM ABOUT TO FAIL HELP PLZ!!!!!!!!
What is the change in temperature from -8°F to 14°F?
-22°F
6°F
22°F
-6°F
What is the first step in the decision-making process?
O Take action.
O Get information.
O Form a decision.
O Identify the choices.
73yd+(x+32yd) answer
Answer:
Step-by-step explanation:
73yd + x + 23yd
Solving like terms
96yd + x
A store has a sell. You can purchase 3 cds for 45$. Which ratio describes the unit rate
Answer:
$15 for 1 CD or 15:1
Step-by-step explanation:
You just divide 45 by 3 and get your answer for value per CD. :)
Identify the fraction that is equivalent to 3/8
A. 15/32
B. 12/32
C. 12/24
D. 9/32
Answer:
The answer is B
Step-by-step explanation:
plz mark brainliest i answered first
Answer:
12/32 is equivalent to 3/8
Can someone please help me. I think the answer is Y= -14 but I’m not sure
Answer:
yep your correct!
Step-by-step explanation:
i did 5(-2) -4
which is -10 -4
and that will equal -14!
hope this helps u!
Answer:
-14
Step-by-step explanation:
because if x is -2 we have y=5.(-2)-4 and that's y=-10-4 and that's y=-14
6th grade math i mark as brainliest
step (1) 32+23*4 =124 step (2) 9+23*4= 101 step (3) 9+9*4=45 step 4 9+35=44
Step-by-step explanation:
What is the slope of the line represented by the equation y=-1/2x+ 1/4 ?
a. -1/2
b. -1/4
c. 1/4
d. 1/2
Answer: A. -1/2
Step-by-step explanation:
Factor completely x2 − 8x + 16
Step-by-step explanation:
(x-4)(x-4)
or
(x-4)^2
Please help me I acc don’t know it
Complete the following table with the properties used to
solve
4(x + 3) = 20.
Statements
Proof
4(x + 3) = 20
Given
4x + 12 = 20
4x = 8
x = 2
Answer:
x = 2
distributive property of equality, subtraction property of equality, and division property of equality
Step-by-step explanation:
(Proof is in parenthesis)
4(x + 3) = 20 (Given)
4x + 12 = 20 (distributive property of equality)
4x = 8 (subtraction property of equality)
x = 2 (division property of equality)
A circle has a diameter of 8 centimeters, as shown below.
8 cm
What is the area, in square centimeters, of the circle?
Answer:
12.6cm²
Step-by-step explanation:
Diameter of circle = 8cm
Unknown:
Area of the circle = ?
Solution:
The area of the circle is given by the expression below;
Area = π r²
r is the radius of the circle
Since diameter is 8cm, radius = 4cm
Insert the parameters;
Area of circle = π x 4cm = 12.6cm²
Answer:50.3
Step-by-step explanation: i got it right
Daniel has 15 yards of fabric to make baby blankets. It takes 1 and 1/2 yards of fabric to make each blanket, and the expression that models the situation is 15 minus three-halves y. Which of the following are possible numbers of blankets that Daniel could make? Select all that apply. 9 10 11 12 15
Answer:
It's 9 and 10
I was going to put a picture but it wouldn't let me:P
Answer:
9 + 10
Step-by-step explanation:
PLS HELP ME Pls help me I really need it
3 is a Name a chord that is not a diameter
Answer:
by-step explanation: