Answer:
its first one
Step-by-step explanation:
A circle has an area of 64 pi . What is the exact circumference of the circle? Show your work.
Answer:
C≈28.36Circle
Solve for circumference
C≈28.36
A Area
64
Using the formulas
A=πr^2
C=2πr
Solving forC
C=2√πA=2·√π·64≈28.35926
Step-by-step explanation:
Hope it is helpful.....
Work out the surface area of this cylinder radius 2cm and height 4cm pls help
Step-by-step explanation:
surface area of cylinder is
2×pi×r (h+r)
2×22/7×2 (4+2)
88/7 (4+2)
75.4 cm square
Each month Marla pays a $30 cell phone bill from her bank account. At the
end of one year, what is the change in the amount of money in Marla's account
because of her cell phone bill? Write a multiplication equation to represent the
problem. Explain what the product represents.
Answer:
-$360.00 change
Step-by-step explanation:
Now there is either some information missing, like her starting total in the bank; or they want you to explain the net change. But the way the question is worded it is stating she is paying $30 over 12 months. This means she has paid $360.00 in that 12 months aka 1 year. Her bank account should have had a balance. So you could technically say B for balance. B-30*12. To get your answer. Although there are many ways to write an equation expression of this question. If you know the starting balance then it's better. But you could assume her starting balance was $0. Which would be 0-30M*12 where M could represent monthly. And the same answer would occur of 360. Is there more information?
30*12= X (x equals the total paid)
X-30*12 (if x is her balance before paying any money)
Write 662 in scientific notation.
T-T help me I can't think
Answer:
81 square inches
Step-by-step explanation:
area of a square= s^2
How do you write 60% as a decimal?
Triangular prism please help
Answer:
C
Step-by-step explanation:
graph y+x=45 and 2y+4x=130. how many solutions?
Answer:
one solution --> (20,25)
Step-by-step explanation:
Can someone please help me with this?
Answer:
true 8 is the common
please follow me so I will follow you
Answer:
False
Step-by-step explanation:
Premise: 8n-1 = 2n+8
6n-1 = 8
6n = 9
n = 1.5 Since n must be an integer, this is an extraneous solution. The premise is false.
A grocery store sells a bag of 7 oranges for $4.48. If Khloe spent $6.40 on oranges, how many did she buy?
She need to buy 10 oranges of $6.40.
What is the unitary method?The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value. Unitary method is a technique by which we find the value of a single unit from the value of multiple devices and the value of more than one unit from the value of a single unit.
We are given that grocery store sells a bag of 7 oranges for $4.48. If Khloe spent $6.40 on oranges, then
We have to do as $4.48 divide by 7
4.48 / 7 = $0.46
Therefore, Each orange costs $0.64
For 10 oranges;
$0.46 x 10 = $6.40
Learn more about the unitary method, please visit the link given below;
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What expression is equivalent to ⅗?
Answer:
6/10
Step-by-step explanation:
Answer:
3/5 = 0.6 = 6/10 = 9/15 = 12/20 = 18/30 = 21/35 = ...
Step-by-step explanation:
Multiply the numerator and denominator by the same number:
3/5 = 6/10 = 9/15 = 12/20 = 18/30 = 21/35 = ...
Also, you can divide 3 by 5 to get 0.6
please please please tell the answer
Answer:
a. 0
b. 4^1
c. 14
d. 8
Step-by-step explanation:
Answer:
Step-by-step explanation:
[tex]a^{m}*a^{n}=a^{m+n}\\\\\frac{a^{m}}{a^{n}}=a^{m-n}\\\\(a^{m})^{n}=a^{m*n}\\\\a) 3^{5}*3^{x} = 3^{3}*9=3^{3}*3^{2}\\\\ 3^{5+x} =3^{3+2}[/tex]
Compare the exponents,
5 +x = 5
x = 5-5
x = 0
[tex]b) \frac{4^{x}*4^{8}}{4^{2}}=(4^{7})^{1}\\\\4^{x+8-2}=4^{7*1}\\4^{x + 6}=4^{7}[/tex]
Compare the exponents,
x +6 = 7
x = 7-6
x = 1
[tex]c)\frac{a^{8}*a^{5}}{a^{2}}=\frac{a^{x}}{a^{2}}\\\\a^{8+5-2}=a^{x-2}\\\\a^{11}=a^{x-2}[/tex]
Compare the exponents,
x - 2 = 11
x = 11+2
x = 13
[tex]d)\frac{(5^{3})^{x}}{5^{6}}=5^{10}*5^{8}\\\\5^{3x-6}=5^{10+8}\\\\5^{3x-6}=5^{18}[/tex]
Compare the exponents,
3x -6= 18
3x = 18 + 6
3x = 24
x = 24/3
x = 8
sec 5A = cosec 7A, prove that A = 7.5°
Answer:
see explanation
Step-by-step explanation:
Using the cofunction identity
sec(90 - x)° = cscx° , then
7A = 90 - 5A ( add 5A to both sides )
12A = 90° ( divide both sides by 12 )
A = 7.5°
What is 20.30 - 19.70 and what are the solving steps?
Answer
0.6
Step-by-step explanation:
here is the working out! Can i get brainliest
Answer:
Look at the image!!
Step-by-step explanation:
Hope this helps!!
Sorry for the bad righting XD
If you want to learn more search Mathisfun.com!!
Find an equivalent expression using the Distributive Property. x(4+y)
Answer:
x*4+x*y
Step-by-step explanation:
Answer:
4x+xy
Step-by-step explanation:
Just multiply x to both terms:
x(4+y)
x*4 + x*y
4x + xy
Hope this helped :)
Evaluate 4 + s × 12, where s= 1/2
(A) 6
(B) 10
(C) 24
(D) 54
Answer:
(B) 10
Step-by-step explanation:
f(s) = 4 + s × 12
f(1/2) = 4 + (1/2) × 12
= 4 + 6
= 10
Answer:
10
Step-by-step explanation:
4 + s x 12
4 + (s x 12)
s = 1/2
substitute for s
4 + (1/2 x 12)
4 + 6 = 10
• Which expression has a term with a coefficient of 6?
бу
4p +6
62
20
The expression that has a term with a coefficient of 6 is бу.
Option A is the correct answer.
What is an expression?An expression contains one or more terms with addition, subtraction, multiplication, and division.
We always combine the like terms in an expression when we simplify.
We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.
Example:
1 + 3x + 4y = 7 is an expression.com
3 + 4 is an expression.
2 x 4 + 6 x 7 – 9 is an expression.
33 + 77 – 88 is an expression.
We have,
The term "coefficient" refers to the numerical factor that is multiplied by a variable or variables in a term.
Out of the given expressions, only one has a term with a coefficient of 6, which is:
6y
Thus,
The expression that has a term with a coefficient of 6 is бу.
Learn more about expressions here:
https://brainly.com/question/3118662
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5/7 ............. 15/21
NONE OF THESE
EQUAL
GREATER THAN
LESS THAN
Answer: EQUAL
Step-by-step explanation:
Just as you can do the same thing to both sides of an equation, you can do the same thing to both sides of a fraction. 15 = 5*3 and 21 = 7*3. Thus, 5/7=15/21
Hope it helps <3 :)
13 candy bars with 26 Oz what is the weight of 35 candy bars
Answer:26/13=2oz 2oz*35=70oz
Step-by-step explanation:Hope this helps.
Answer:
70 oz
Step-by-step explanation:
13÷26=2 oz per bar
35×2= 70 oz
SAVE ME PLS
The ratio of teachers to students in a particular school is 1 to 11. The ratio of female students to the total number of students is 4 to 9. If there are 396 female students, then how many teachers are there?
Answer:
81
Step-by-step explanation:
Set up a proportion to find how many total students there are [notice how females are on top and totals are on the bottom of the ratios]
[tex]\frac{4}{9}[/tex] = [tex]\frac{396}{x}[/tex] so cross multiply 4x = 396(9) so x = 891, if there are a total of 891 students and you need 1 teacher per 11 students then take 891/11 so you need 81 teachers.
You could set up another proportion 1/11 = x/891
If there are 396 female students, there are 81 teachers.
How to obtain real measurements from the ratio of two measurements?Suppose the real measurements were "a" and "b"
Then their ratio will be formed as
[tex]\dfrac{a}{b} = \dfrac{p \times x}{q \times x} = \dfrac{p}{q}[/tex]
where is a common factor (not 1)
This shows that to get the real measurements from the given ratio, we need to assume to have some factor possibly cancelled from both the numerator and the denominator.
Thus, a = px, b = qx
First, Set up a proportion to find how many total students there are
[notice how females are on top and totals are on the bottom of the ratios]
So, 4/9 = 396 / x
then, cross multiply
4x = 396(9)
so x = 891,
if there are a total of 891 students and we need 1 teacher per 11 students then take 891/11.
Thus, you need 81 teachers.
Also, we could set up another proportion 1/11 = x/891
Hence, If there are 396 female students, there are 81 teachers.
Learn more about ratio here:
brainly.com/question/186659
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PLEASE HELP ME FOR THIS I NEED IT QUICK!!
The price of 6 packets of tea is same as the price of 4 packets of coffee. How many packets of tea are required to exchange 20 packets of coffee?
Answer:
The answer is 30
Step-by-step explanation:
Suppose the price per pack of tea is x and the price of coffee per pack is y
Then
[tex]6x = 4y \\ when \: 20y = 5 \times 4y = 5 \times 6x \\ = 30x[/tex]
We need 30 teabags to exchange for 20 coffee bags
m,n how much is it in math
Answer:
you can't really determine how much letters equal if there is not an equation but it represents variables that stand for integers
Step-by-step explanation:
hope this helps have a good rest of your night :) ❤
Given that a = 15 cm and b = 8 cm, work out x
Answer:
the value of x is 17 cm
Step-by-step explanation:
The computation of x is shown below:
Here we applied the pythagoreans theorem
x^2 = a^2 + b^2
x^2 = 15^2 + 8^2
X^2 = 225 + 64
x^2 = 289
x = sqrt(289)
= 17
Hence, the value of x is 17 cm
The LCD PLEASEEEE
EEEEE
Answer:
-2
Step-by-step explanation:
(x + 2) ÷ 2 + (x + 4) ÷ 4 = 4
lcm is 6
(x + 2) ÷ 2 × 6 + (x + 4) ÷ 3 × 6 = 4
(x + 2) × 3 + ( x + 4) × 2 = 4
3x + 6 + 2x + 8 = 4
correct like terms
3x + 2x + 6 + 8 = 4
5x + 14 = 4
5x + 14 - 14 = 4 - 14
5x = - 10
5x ÷ 5 = -10 ÷ 5
x = -2
solve 15-y>8 show working
Answer:
y <7
Step-by-step explanation:
15-y>8
Subtract 15 from each side
15-15-y>8-15
-y>-7
Multiply each side by -1, remembering to flip the inequality
-1 * -y > -7*-7
y <7
Pleaseeee answer correctly !!!!!!!!!!!! Will Mark Brianliest !!!!!!!!!!!!!!!!!!
Answer:
NI and HN
Step-by-step explanation:
They are marked congruent by the small lines in the middle of each segment, indicating marks for congruency.
CAN someone help me this is due in like a few mintuirs
4x - 10 = 22
two step equations(integers)
the answer is x=8
I hope this helped
Please answer 6! Thank you!
Answer:
∠J= 22°
JL=19.0137
KL=7.99
Step-by-step explanation:
The step-by-step is attached as a picture. Hope it helps! Feel free to message me if you have any questions in reference to this math problem.
The answer to the problem you sent me in the comments is attached to here too.
find the area of a square of side 7.2 cm
Answer:
51.84 cm²
Step-by-step explanation:
in a square
lengths (L) = 7.2 cm
Area of square
= L²
= ( 7.2 cm) ²
= 51.84 cm²
Hope it will help :)