Answer:
11
Step-by-step explanation:
30-x=3/5*25+7
30-x=12+7
30-x=19
-30 -30
-x=-11
x=11
if a circle has a diameter of 18 how many square inches is the circle?
Answer:
254.47
Step-by-step explanation:
[tex]\frac{18}{2} <= radius\\\\9^{2} * \pi = 254.47[/tex]
Cara's Candles Cara likes candles. She also likes mathematics and was thinking about using algebra to answer a question she had about two of her candles. Her taller candle is 16 cm tall. Each hour it burns makes the candle lose 2.5 cm in height. Her short candle is 12 cm tall and loses 1.5 cm in height for each hour that it burns.
Write an equation for both candles and solve it by either substitution or elimination.
(If someone could please help me out with this, I would really appreciate it. I've been trying to do this for days now and I just can't figure it out..)
(By the way, the equation for the 16 cm candle is y = -2.5x + 16, and the equation for the 12 cm candle is y = -1.5x + 12, I just don't know how to solve it using substitution or elimination.)
please help I don't understand
I WILL give branliest to whoever's right
I really need the answers
Answer: Substitution
Step-by-step explanation: I think that because you have the equations already, you just have to solve for a variable using substitution. Do this by substituting one of the variables with another number. For example, make x=2 in both equations. Now you are free to solve for y and get your answer.
y=-2.5(2)+16
y=11
y=-1.5(2)+12
y=9
You can substitute in any number that makes it easy for you. Also, if you want x, you can substitute y. I'm really, really sorry if that is not helpful, I just told you what I know!
The length of a rectangle is 5ft. less than twice the width, and the area of the rectangle is 33ft². Find the dimensions of the rectangle.
Good answer with steps gets brainliest.
Wrong answers, no effort, and links get 1-2 star.
Telling me to check khan academy and stuff like that gets 2 star.
I want good answers
ty
Answer:
1-2
Step-by-step explanation:
thank you very much
an fun mm mm DMZs
Answer: 24?
Step-by-step explanation:
32 ÷ 4 x (16 x 1/2) -2
32 ÷ 4 x (16 x 1/2) -2
= 32 ÷ 4 × 8 -2
= 8 × 8 - 2 = 64-2
= 62
Answer:
62
Step-by-step explanation:
32/4 x (16 x 1/2) -2
8 x 8 - 2
64-2
62
<3
The figure undergoes a 90° rotation counterclockwise, followed by a reflection across a vertical line.
Which of the following shows the transformed image?
I am almost confident it is B
Andy's savings to earnings ratio is $0.15:$1. If Andy earns $1200, how much will he save?
PLS HELPP
Answer:
£180
Step-by-step explanation:
1200 times 0.15 = 180
Write your question here (Keep it simple and clear to get the best answer)
Four friends are told that the average (mean) of their grades for their favorite class is 83.75%.
Kevin got 94%, Elizabeth got 78%, and Katherine got 83%.
Tyler's grade was not revealed. What's Tylers grade?
Answer:
Tyler got 80%.
Step-by-step explanation:
Represent Tyler's average by t.
Then .94 + .78 + .83 + t
-------------------------- = 83.75%
4
Multiplying both sides by 4, we get 2.55 + t = 3.35
so that t = 3.35 - 2.55 = 0.80
Tyler got 80%.
A math question about proportions, help
EXPLANATION ON HOW TO FIND THIS!!!
What is the distance between (-4,1) and (0,2)?
I bought some 60cent candy bars with c dollars. Then I ate n of them. How many candy bars do I have left?
Answer:
Not enough information.
A pitaya, or a dragon fruit, is a tropical fruit with pink skin and pulp filled with tiny black seeds. The weight of a pitaya seed is 1 x 10-^3 ounce. What is the weight of the pitaya seed in standard form?
Answer:
the answer is 7 beacuse 1×10-"3
How many classifications shown contain organisms whose cells do not have nuclei?
A.1 B.3 C.2 or D.4
Help me plz
Ivan is 162.4 centimeters tall and is building a tower out of cans that he wants to be as tall as he is. He wants to know how many cans he will need, but he forgot to measure the length of 1 can. He knows that 10 cans are 56 centimeters tall. If he starts building the tower of cans on a stool that is 28 centimeters tall, how many cans does he need for his tower?
Find the area of this circle. Use 3.14 for pie .
Answer:
8820.26 m^2
Step-by-step explanation:
The diameter is 106
The radius is 1/2 of the diameter
1/2 ( 106) = 53
The area of a circle is
A = pi r^2
= (3.14) ( 53)^2
= 8820.26 m^2
No pic/link just type answer pls.
Answer:
This problem requires you to use the equation for the volume of a cone. The equation is [tex]\pi r^{2}\frac{h}{3}[/tex]. Plug in the corresponding numbers to solve the equation. The equation should be [tex]\pi (3\frac{3}{16})^{2} \frac{9\frac{3}{4} }{3}[/tex]. Simplify the equation to get 103.74 [tex]in^{3}[/tex].
88888888888888888888888888888
Answer:
to know the average of the data set
Step-by-step explantion:
i dont know :)
Please help don’t understand
Answer:
176 cm^2
Step-by-step explanation:
Area of a triangle = 1/2(b)(h)
*b means base and h means height*
Since there are four separate triangles here, we have to find the area for each and add each area together.
1/2(8)(16)
1/2(128)
64
We can multiple 64 by 2, because there are two triangles of this same size in the kite.
64(2) = 128
1/2(8)(6)
1/2(48)
24
We can also multiply 24 by two since the kite includes two triangles of this same size.
24(2) = 48
48 + 128 =
Brice is taking a bike tour of the city. The entire tour is 24 7/10 kilometers long. Brice knows that his average biking rate is 4.3 meters per second.
Question 1
Part A
What is Brice's average biking rate in kilometers per hour?
Enter the correct answer in the box.
Brice's average biking rate in km/h is 15.48km/h.
To solve this problem, we just have to convert his speed/velocity from m/s to km/h
Data;
Distance = 24 7/10Speed = 4.3 m/sConversion from meter per seconds to kilometer per hour[tex]1000m = 1km\\and \\(60*60)s =1hr\\[/tex]
This will bring 4.3m/s to
[tex]4.3m/s = km/hr\\\\4.3m/s= 4.3*\frac{(60*60)}{1000} \\4.3m/s = 15.48km/h[/tex]
Brice's average biking rate in km/h is 15.48km/h.
Learn more on conversion of m/s to km/h here;
https://brainly.com/question/17808452
PLEASE HELP MEEEEEE!!!!!
Answer
d.11(x+5)
Step-by-step explanation:
A sample space is shown below.
(1, 1) (2, 1) (3, 1) (4, 1) (5, 1) (6, 1)
(1, 2) (2, 2) (3, 2) (4, 2) (5, 2) (6, 2)
(1, 3) (2, 3) (3, 3) (4, 3) (5, 3) (6, 3)
(1, 4) (2, 4) (3, 4) (4, 4) (5, 4) (6, 4)
(1, 5) (2, 5) (3, 5) (4, 5) (5, 5) (6, 5)
(1, 6) (2, 6) (3, 6) (4, 6) (5, 6) (6, 6)
A compound event image occurs when any of the shaded outcomes in the sample space occurs. What is the probability of image?
A.
image
Answer:
[tex]Pr(E) = \frac{1}{9}[/tex]
Step-by-step explanation:
Given
Compound event E
replace "image" with E in the question
Required
The probability of E
From the question, 4 outcomes were shaded.
This implies that
[tex]n(E) = 4[/tex]
And we have:
[tex]n(S) = 36[/tex] --- Sample size
The probability of E is:
[tex]Pr(E) = \frac{n(E)}{n(S)}[/tex]
This gives:
[tex]Pr(E) = \frac{4}{36}[/tex]
Simplify
[tex]Pr(E) = \frac{1}{9}[/tex]
If f(x) = -2x + 3 and g(x) = 2x + 3; solve for f(3) + g(7)
Answers: 0, 14, 26, 25
Answer:
14
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
FunctionsFunction NotationStep-by-step explanation:
Step 1: Define
f(x) = -2x + 3
g(x) = 2x + 3
f(3) is x = 3 for function f(x)
g(7) is x = 7 for function g(x)
Step 2: Solve
Substitute in x [Functions]: f(3) = -2(3) + 3, g(7) = 2(7) + 3Substitute in functions: f(3) + g(7) = -2(3) + 3 + 2(7) + 3Multiply: f(3) + g(7) = -6 + 3 + 14 + 3Add: f(3) + g(7) = -3 + 14 + 3Add: f(3) + g(7) = 14Only answer if you know the correct answer! Thanks! :)
Answer:
C) h>6,000
Step-by-step explanation:
Cirrus clouds form at a height above 6,000 meters. Therefore saying that the height that they form at has to be greater than 6,000 meters.
Answer:
C
Step-by-step explanation:
I need help asap 14 points!
Answer:
166.666666666667%
41.304347826087%
10%
350%
6.41
14.25
help please! I will give brainliest to the best answer
1. I roll a standard six-sided die 6 times in a row. What is the probability that the numbers alternate between odd and even?
2. We draw a card from a standard deck. What is the probability that it is a Jack, Queen, King, or it is red?
3. A student applies to four colleges, all of which decide admissions through random lotteries. The probability of admissions to each college is given in the table below. If the student applies to all four of these colleges, what is the probability that he is admitted to at least one of them? Express your answer as a fraction in simplest form.
College 1: 1/7
College 2: 1/8
College 3: 1/9
College 4: 1/10
4. I have two standard, six-sided dice; one is brown, and the other is black. I roll them both. What is the probability that the sum of the numbers that I roll is less than 4?
5. How many 12-step paths are there from A to B, going one unit to the right or one unit up each step? The path must be entirely along the lines of the grid. (image attached below)
Answer:
1. 50%
Step-by-step explanation:
1. You have a 50% chance because it could land on either odd or even.
PLEASE HELP ME!!!! THIS IS TIMED PLEASE HELP ME!!!! PLEASE!!!! PLEASE HELP ME!
For those of you that can not see the question it says: In a class of students, the following data table summarizes how many students play an instrument or a sport. What is the probability that a student chosen randomly from the class plays a sport or an instrument?
Answer:
18/28
Step-by-step explanation:
please answer brainly thing will be given
Answer:
Here
Step-by-step explanation:
Refer to the table shown. If the pattern continues what algebraic expression can be used to find the plants height for any month? What will be the plants height at 12 months?
Answer:Answer is 36 inches high.
Step-by-step explanation:
Each term is 3 times the number of months. So, the
expression is 3n.
3 3(12) n
Replace n with 12.
36
At the end of 12 months, the plant will be 36 inches high.
Abby and her mom are driving on a road trip, and Abby is watching the milepost signs go by. Each hour she writes down which mile marker they
pass and records her results in the table given.
Its linear. I looked it up. ;)
Miguel saves the same amount of money into a bank account each week. The bank account started with some money in it. After 3 weeks, the bank account contained $250. After 10 weeks the bank account contained $600.
Write an equation that can be used to model the number of dollars, y, Miguel saves in x weeks.
Explain what the slope and y-intercept of your equation mean in the context of the situation.
Answer:
jtjrjrjrjrjririisi
Step-by-step explanation:
djsejjejejeirjrhhrjsisk dndns
dndndjjrnrnr
ebebhehebdb