what is the area of a circle whose radius is 4x centimeters? write your answer in terms of pi.
Answer:
16xpi
Step-by-step explanation:
To find the area of a circle the formula is pi r squared.
r represents radius, aka 4x.
4 times 4 yields 16.
Leaving you with 16xpi
Answer:
50.24
Step-by-step explanation:
A= πr^2
3.14 x 4^2 = 50.24
(4^2=16)
93% of what number is 25?
Answer: The answer is 327
Explanation: 93×100/25 = 327
Maya is 14 years old. Her brother Jorge is 3 years more than half her age. Which of the following is the correct expression for Jorge's age?
The correct expression for Jorge's age is (14 ÷ 2) + 3
What is an expression?Expressions in math are mathematical statements that have a minimum of two terms containing numbers or variables, or both, connected by an operator in between.
Given that, Maya is 14 years old. Her brother Jorge is 3 years more than half her age.
We need to determine an expression for Jorge's age,
So, If you divide her age by two and add 3 then you will get Jorge age and that is what the question is asking,
i.e. (14 ÷ 2) + 3
Hence, the correct expression for Jorge's age is (14 ÷ 2) + 3
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In 2 ½ hours, Joaquin can bake 4 dozen cookies. What is his unit rate in dozen cookies per hour?
Answer:
1.6 dozen cookies per an hour
Step-by-step explanation:
2 1/2 divided by 2 1/2 gives you 1 hour and 4 divided by 2 1/2 gives you 1.6 dozen cookies
2) 2.25 is 62.5% of what number?
Answer:
250
Step-by-step explanation:
250 ÷ 400 = 0.625 = 0.625 × 100/100 = (0.625 × 100)/100 = 62.5/100 = 62.5% Answer: Percentage of 62.5% of what number = 250?
The required number whose 62.5% is 2.25 is given as 3.6.
Given that,
To determine the number whose 62.5% is 2.25.
The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
Given that,
Let the number be x,
According to the condition,
62.5% of x = 2.25
0.625x = 2.25
x = 2.25/0.625
x = 3.6
Thus, the required number whose 62.5% is 2.25 is given as 3.6.
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what would the perimeter of this shape if we enlarged it by a scale of 2.5?
Answer:
260m
Step-by-step explanation:
32 would be=80
20 would be=50
80+80+50+50=260
please mark as brainliest!!!<3
On Your Own #2
On a map. 1 cm represents 30 km. Two cities on the map are 2.3 cm apart
How far apart are the actual cities?
2.3 km
13 km
30 km
69 km
Scale 1:20.000 (3.2 inches to 1 mile)
0.25 0.50 0.75 1 kilometre
mile
Does anyone know how to do this!?
I’ll give Brainliest!!!
Step-by-step explanation:
Your going to want to subtract 3/2 from 10 then multiply that number by 20 then simplify and thats your answer
(-1/2 + 5/2) + a =0 solve for a
Answer:
a = -2
i hope this helps
Answer: a = - 2
Step-by-step explanation:
[tex]\bigg (-\dfrac{1}{2} +\dfrac{5}{2} \bigg )+ a=0\\\\ \dfrac{4}{2} +a=0\\\\2+a=0\\2+a-2=0-2\\a=-2[/tex]
A triangle has two angle measures of 20 degrees and 30 degrees. Find the third angle. This triangle is a(n) ________ triangle
options: acute obtuse right it does not make a triangle
Answer: obtuse
Step-by-step explantion: 20+30=50 180-50=130 130 is an obtuse angle.
I need help ASAP please HElp
Answer: C
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
Pleaseee helppp!!!!! Will mark Brianliest !!!!!!!!!!!!!!
D) None of the above, since it is not a closed figure.
Help please thanks pic attached
I need help with question b
Answer:
A triangular pyramid, otherwise known as a tetrahedron.
Step-by-step explanation:
I learned this in math class a long time ago. My major in college revolves around math and I tutor in geometry, so I memorized this type of stuff.
Glad to see that my hard work is paying off.
Need this very badly
Answer:
I belive the answer is b
Step-by-step explanation:
hope this helps !!!
At Trace State Park in Mississippi, there is a 40-mile mountain bike trail. Tommy rode 1/2 of the trail on Saturday and 1/4 of the trail on Sunday. He estimates that he rode more than 22 miles over the two days. Is Tommy’s estimate reasonable? Justify your reasoning !
Answer: 17.5 out of 25
I hope this helped
Step-by-step explanation:
A windowpane is 20 centimeters tall and the diagonal distance from one corner to the other is
25 centimeters. How wide is the windowpane?
centimeters
Answer:
The windowpane is 15 centimeters wide.
Step-by-step explanation:
Use the Pythagorean theorem:
a^2 + b^2 = c^2
20^2 + b^2 = 25^2
400 + b^2 = 625
b^2 = 225
b = 15
A patient requires a 30% decrease in the dosage of his medication. His current dosage is 340 mg. What will his dosage be after the decrease?
Answer:
238
Step-by-step explanation:
340 times 0.7 is 238
Answer:
238
Step-by-step explanation:
30% of 340
30/100×340
3/10×34
3×34
102 is the decrease
So,340-102
=238
BRAINLIEST IF CORRECT
A state offers two lottery games, Winone and PlayBall. Both games cost $2 per ticket.
• In Winone, the player picks a single letter from A to J and a single digit from 0 to 9. If both the letter and the digit match the letter and the
digit picked on that day, the player wins $150.
• In PlayBall, the player picks a single letter from A to T and a single digit from 0 to 9. If both the letter and the digit match the letter and the
digit picked on that day, the player wins $280.
If the prize for WinOne were increased to $200 for matching both the letter and the digit, what would the expected value be?
ОА.
-$0.80
OB. $0.65
C. $0
OD. $0.80
HELP I NEED HELP ASAP
Answer: A
Step-by-step explanation:
Cuz the inverse of addition is subtraction
Hey guys can one of you help me pls it’s only one small question
Answer: x=6
Step-by-step explanation:
-6x+8=4(5-x)
-6x+8=20-4x
12=2x
x=6
Answer:
-6
Step-by-step explanation:
-6x+8=20-4x
subtract 8 from both sides:
-6x+8-8=20-4x-8
simplifiy:
-6x=-4x+12
Add 4x to both sides:
-6x+4x=-4x+12+4x
simplifiy:
-2x=12
divied both sides by -4:
-2x/-2=12/-2
simplifiy:
x=-6
Can someone help with this 25 point
1,2,3
Answer:
(if violation occurs in an active work zone, 15-day suspension).
Step-by-step explanation:
Please help me if you can.
Answer:
Step-by-step explanation:
DEFINITIONS
Standard Form: a way of expressing numbers that are too large or too small to be conveniently written in decimal form.
Monomial: a polynomial which has only one term.
Binomial: a polynomial that is the sum of two terms, each of which is a monomial.
EXAMPLES
Standard Form: 2x+3y=5 (Ax + By = C)
Monomial: 2x^2, 4y, etc.
Binomial: 3x + 5
Simplify. 4(w-5)-6w please help ASAP
Answer:
-2w-20
Step-by-step explanation:
distribute => 4w-20-6w = -2w-20
Answer:
-2w - 20
General Formulas and Concepts:
Pre-Algebra
Distributive PropertyAlgebra I
Terms/Coefficients/DegreesStep-by-step explanation:
Step 1: Define
4(w - 5) - 6w
Step 2: Simplify
Distribute 4: 4w - 20 - 6wCombine like terms: -2w - 20Neeeeeeeeeeed helppppppppp plssssssss
Which best explains why the equation y=2x+3 does or does not represent a proportional relationship?
Answer:
It represents a non-proportional relationship
Step-by-step explanation:
because in order for it to be proportional it has to pass (0,0) but this equation's y-intercept is (0,3).
PLZ help i do not get this
Pls explain how you got the answer also ☺️
Answer: x = 250
Step-by-step explanation:
-17 + x/5 = 33
+17 on each side to get rid of the 17
x/5 = 50
Multiply each side by 5 to cancle out the 5 and isolate the variable
x = 250
Brody set his watch 1 second behind, and it falls behind another 9 seconds every day. Write
an equation that shows the relationship between the days since watch was last set x and the
seconds behind y.
Write your answer as an equation with y first, followed by an equals sign.
Answer is you know this?
Answer:
y = -1 - 9x
Step-by-step explanation:
Brody's watch is already 1 second behind (the constant), and it falls behind 9 more seconds for every day (x).
Can someone help me plzz??
Answer:
(0,20)
Step-by-step explanation:
1) we can represent the situation as coordinates
lets have # of texts be "x" variable
lets have bill be "y" as the y variable is always the dependant variable and the cost of the phone bill is dependant upon the number of texts so
y=mx+b-slope-intercept form
coordinates: (50,25) and (100,30)
slope: (30-25)/(100-50)
5/50=1/10
hence slope=1/10
y=1/10x+b
substitute in a coordinate pair into this equation
25=50*1/10+b
25=5+b
b=20
hence y intercept is (0,20)