Answer:
240
Step-by-step explanation:
What 21 over 40 divided by
I’m
Answer:
if you're asking what 21 divided by 40 is then it's 0.525
Step-by-step explanation:
Paulo ran a marathon in about 1.56 × 10^4 s. A) Write Paulo's time in standard notation. B) Miguel ran a marathon in 4 h and 16 min. Who ran the race in the shorter amount of time? Show your work. (Question 2) Solve each given equation and show your work. Tell whether each equation has one solution, an Infinite number of solutions, or no solution. Explain your answers. A) 2x+4(x-1)=2+4x , (B) 25-x=15-(3x+10) , (C) 4x=2x+2x+5(x-x). (I posted a picture of question 3).
Paulo's time in standard notation is 15,600 seconds. Miguel ran the marathon in a shorter time of 15,360 seconds. For the given equations, A) and B) each have one solution (x=3 and x=10, respectively), while C) has an infinite number of solutions.
Explanation:To convert Paulo's time from scientific to standard notation, we multiply 1.56 by 10 to the power of 4. This equals 15,600 seconds. Next, we need to convert Miguel's time to seconds to directly compare the two durations. Miguel ran for 4 hours and 16 minutes, which is equal to (4 × 3600) + (16 × 60) = 14,400 + 960 = 15,360 seconds. Therefore, Miguel ran the race in a shorter amount of time by 240 seconds.
For question 2, we solve the following equations:
For equation A) 2x + 4(x - 1) = 2 + 4x, after simplifying we get 2x + 4x - 4 = 2 + 4x. The 4x terms cancel out and we are left with 2x - 4 = 2. Solving for x gives x = 3. This equation has one solution.
For equation B) 25 - x = 15 - (3x + 10), simplifying gives 25 - x = 5 - 3x. Solving for x yields x = 10, so this equation also has one solution.
For equation C) 4x = 2x + 2x + 5(x - x), simplifying results in 4x = 4x, which is true for all values of x. Therefore, this equation has an infinite number of solutions.
As question 3 involves an image that we cannot see here, this part of the student's question has been left unanswered.
Louie needs to add 2/3 of a cup of chocolate to his cupcakes. He only has a 1/3-cup measuring cup. How many scoops of chocolate does Louie need to add?
Answer:
2 Scoops
Step-by-step explanation:
1/3 plus 1/3 equals 2/3, so he would need two 1/3 scoops.
Jabari is thinking of three numbers. The greatest number is twice as large as the least number. The middle number is three more than the least number. The sum of the three numbers is
75
. Find the numbers.
Answer:
18,21,36
Step-by-step explanation:
You can use Algebra to solve it x+x+3+2x=75 or 4x+3=75 will give you the answer 1818 then plus 3 is 21so 18 plus 21 is 39Then the greatest number is 18x2=3639+36=75Eight years from now , Bianca will be 50% older than she is now . How old is Bianca
Answer:
16
Step-by-step explanation:
because eight is 50% of 16
Answer: She will be 16
Step-by-step explanation:
What is 18/27 simplify?
Answer:
The answer is 2/3 okay? Pls thx me!
Question is provided in the image attached.
25 points!
Hey!
-------------------------------
Find the zero term:
Plug in 0 for n.
a = 8 + 3(0 - 1)
a = 8 + 3(-1)
a = 8 + (-3)
a = 5
Answer: 5
-------------------------------
Find the first term:
Plug in 1 for n.
a = 8 + 3(1 - 1)
a = 8 + 3(0)
a = 8 + 0
a = 8
Answer: 8
-------------------------------
Find the 40th term:
Plug in 40 for n.
a = 8 + 3(40 - 1)
a = 8 + 3(39)
a = 8 + 117
a = 125
Answer: 125
-------------------------------
Hope This Helped! Good Luck!
If 7+√5 is equal to √5 plus a number, what do you know about the number? Why?
Answer:
7.
Step-by-step explanation:
Let the number be n, then
7 + √5 = n + √5
As the 2 sides are equal in value, n must be 7.
Rob purchased a rug for his apartment the rug is 72 inches by 96 inches . Calculate the area of the rug in square inches
Answer:
Area of the rug will be 6912 square inches.
Step-by-step explanation:
Rob has purchased a rug having measurement 72 inches by 98 inches for his apartment.
Since the rug will be in the shape of a rectangle, area will be represented by the formula,
Area = Length × width
= 72 × 96
= 6912 square inches.
Therefore, area of the rug will be 6912 square inches.
To calculate the area of Rob's rug, multiply the length of 96 inches by the width of 72 inches, resulting in an area of 6,912 square inches. Thus, the area of the rug is 6,912 square inches.
To find the area of Rob's rug, you need to multiply the length and the width of the rug.
Length = 96 inchesWidth = 72 inchesThe formula for area is:
Area = Length × Width
Using the given dimensions:
Area = 96 inches × 72 inches = 6,912 square inches
Therefore, the area of the rug is 6,912 square inches.
A lawyer has an annual income of $173,482 and will pay a 5.5% income tax rate. What is the amount of income tax in dollars and cents that the lawyer will have to pay?
Answer:
173,482-5.5=173,476.5
Answer:
$9,541.51
Step-by-step explanation:
IIIIIII NNNNNNEEEDDDDD AAAANNNNSSSWWEERR NNNNOOOOOWWWW plz
James wants to carpet the room shown in the diagram. If he uses 12 ft wide carpet strips, how many linear feet will he need to buy?
A) 11
B) 12
C) 20
D) 60
The area of the room = (40 x 24) - (20 x 12)
Area = 960 - 240 = 720 square feet
Divide square feet by width of a strip:
720 / 12 = 60 linear feet.
The answer is D.
Answer : The correct option is, (D) 60
Step-by-step explanation :
First we have to calculate the area of room.
Area of room = Area of big rectangle + Area of small rectangle
Area of rectangle = Length × Width
Area of room = (40 × 12) + (20 × 12)
Area of room = 720 square feet
Now we have to calculate the number of linear feet will he need to buy.
Number of linear feet = [tex]\frac{\text{Area of room}}{\text{Width of carpet strips}}[/tex]
Number of linear feet = [tex]\frac{720}{12}=60[/tex]
Thus, the number of linear feet will he need to buy is, 60
Find the greatest comman factor of 15 and 20
Answer:
GCF(15,20) = 5
Step-by-step explanation:
Prime Factorization of 15
Prime factors of 15 are 3, 5. Prime factorization of 15 in exponential form is:
15 = 31 × 51
Prime Factorization of 20
Prime factors of 20 are 2, 5. Prime factorization of 20 in exponential form is:
20 = 22 × 51
Factors of 15
List of positive integer factors of 15 that divides 15 without a remainder.
1, 3, 5
Factors of 20
List of positive integer factors of 20 that divides 15 without a remainder.
1, 2, 4, 5, 10
Greatest Common Factor
We found the factors and prime factorization of 15 and 20. The biggest common factor number is the GCF number.
So the greatest common factor 15 and 20 is 5.
Kim biked 43.6 kilometers on
Monday, 37.5 kilometers on Tuesday
and 46.2 kilometers on Wednesday.
How many kilometers did she bike in
the three days?
Answer:
127.3
Step-by-step explanation:
Write each fraction as a desimol 29/1000
Fraction Decimal Percentage
30/1000 0.03 3%
29/1000 0.029 2.9%
28/1000 0.028 2.8%
29/997 0.02909 2.909%
Answer:
0.029
Step-by-step explanation:
If m∠EBD = 36° and m∠DBC = 108° find m∠EBC
Check the picture below.
The measure of m∠EBC if m∠EBD = 36° and m∠DBC = 108° is 144degrees
The point where two lines intersect is known as the angle.
From the diagram shown:
m∠EBC = m∠EBD + m∠DBC
Given the following:
m∠EBD = 36degrees
m∠DBC = 108degrees
Substitute the given values into the expression as shown:
m∠EBC = 36 + 108
m∠EBC = 144degrees
Hence the measure of m∠EBC is 144degrees
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I need help simplifying this
Answer:
x^(1/12).
Step-by-step explanation:
By the laws of indices:
(x ^ 1/2)^1/6)
= x ^(1/2*1/6)
= x^(1/12).
Dave is driving to Gilmore to visit his friend. If he wants to stop for lunch when he is about halfway there, in which town should he plan to stop?
Answer:
Dave should stop at Springfield.
Step-by-step explanation:
As shown, Gilmore is 26 miles away.
And Dave is driving to Gilmore but he wants to stop for lunch when he is about halfway there.
That means he wants to stop around [tex]\frac{26}{2}=13[/tex] miles.
And Springfield is 15 miles away that is nearest to 13 miles.
Hence, Dave should stop at Springfield.
Evaluate ab for a = -2 3/4 and b= - 4/6
Answer:
1 5/6
Step-by-step explanation:
ab = (-2 3/4) * (-4/6)
= ( -11/4) * ( -4/6)
= (11 * 4) / (4 * 6 )
= 11/6
= 1 5/6
Weight (g)
words, not numbers, deso
1-14.
k (For example, write, "Double the previo
vious number
Copy and complete each sequence below. Using we
how the patterns work. (For example, write. “T
a.
1,3,6, 10,-
-
b. 1, 2, 3, 5,
d. 8,7,5,2,_
c.
e.
1,3,9, 27, -,-
49, 47, 52, 50, 55, —,—
12
Core Connections, Course
Answer: a) add n+1 to the previous term
b) add the previous two terms
d) subtract n+1 from the previous term
e) multiply the previous term by 3
f) subtract 2 from previous term then add 5 to the next term
Step-by-step explanation:
a) 1, 3, 6, 10
∨ ∨ ∨
+2 +3 +4 The next term is 10 +5 = 15
b) 1, 2, 3, 5
∨ ∨ ∨
=3 =5 =8 The next term is 5 + 8 = 13
d) 8, 7, 5, 2
∨ ∨ ∨
-1 -2 -3 zThe next term is 2 - 4 = -2
e) 1, 3, 9, 27
∨ ∨ ∨
×3 ×3 ×3 The next term is 27 × 3 = 81
f) 49, 47, 52, 50, 55
∨ ∨ ∨ ∨
-2 +5 -2 +5 The next term is 55 - 2 = 53
The following term is 53 + 5 = 58
a. Add the next consecutive natural number to the previous term.
b. Divide the previous term by 2.
c. Multiply the previous term by 3.
d. Subtract the next consecutive natural number from the previous term.
e. Alternate between subtracting 2 and adding 5.
a. 1, 3, 6, 10, __, __
Pattern Description: This sequence is created by adding consecutive natural numbers to the previous term.
Start with 1.Add 2 (1 + 2 = 3).Add 3 (3 + 3 = 6).Add 4 (6 + 4 = 10).The next term is (10 + 5 = 15).
The term after that is (15 + 6 = 21).
So the pattern is: Add the next consecutive natural number to the previous term.
Next two terms: 15, 21
b. 1, 1/2, 1/4, 1/8, __, __
Pattern Description: This sequence is created by dividing the previous term by 2.
Start with 1.Divide by 2 (1 / 2 = 1/2).Divide by 2 (1/2 / 2 = 1/4).Divide by 2 (1/4 / 2 = 1/8).The next term is (1/8 / 2 = 1/16).
The term after that is (1/16 / 2 = 1/32).
So the pattern is: Divide the previous term by 2.
Next two terms: 1/16, 1/32
c. 1, 3, 9, 27, _, __
Pattern Description: This sequence is created by multiplying the previous term by 3.
Start with 1.Multiply by 3 (1 × 3 = 3).Multiply by 3 (3 × 3 = 9).Multiply by 3 (9 × 3 = 27).The next term is (27 × 3 = 81).
The term after that is (81 × 3 = 243).
So the pattern is: Multiply the previous term by 3.
Next two terms: 81, 243
d. 8, 7, 5, 2, _, __
Pattern Description: This sequence is created by subtracting consecutive natural numbers starting from 1.
Start with 8.Subtract 1 (8 - 1 = 7).Subtract 2 (7 - 2 = 5).Subtract 3 (5 - 3 = 2).The next term is (2 - 4 = -2).
The term after that is (-2 - 5 = -7).
So the pattern is: Subtract the next consecutive natural number from the previous term.
Next two terms: -2, -7
e. 49, 47, 52, 50, 55, _, __
Pattern Description: This sequence alternates between subtracting 2 and adding 5.
Start with 49.Subtract 2 (49 - 2 = 47).Add 5 (47 + 5 = 52).Subtract 2 (52 - 2 = 50).Add 5 (50 + 5 = 55).The next term is (55 - 2 = 53).
The term after that is (53 + 5 = 58).
So the pattern is: Alternate between subtracting 2 and adding 5.
Next two terms: 53, 58
Complete question:
Copy and complete each sequence below. Using words, not numbers, describe how the patterns work. (For example, write, “Double the previous number.”)
a. 1, 3, 6, 10,__, __
b. 1, 1/2 1/4 1/8 , __ , __
c. 1, 3, 9, 27,__, __
d. 8, 7, 5, 2,___, __
e. 49, 47, 52, 50, 55, __, __
i need the answers for 11-13 please and thank you is you can only do one of them that’s okay with me
Answer:
Step-by-step explanation:
11. I can't see the full problem statement, so I'm unable to answer the question.
12. Answer below:
"one half" = [tex]\frac{1}{2}[/tex]
"negative five eighths" = [tex]\frac{-5}{8}[/tex]
To evaluate the expression, you multiply the two numbers together:
[tex]\frac{1}{2} * \frac{-5}{8} = \frac{1 * -5}{2 * 8} = \frac{-5}{16}[/tex]
13. Answer below:
"one third" = [tex]\frac{1}{3}[/tex]
"eleven sixteenths" = [tex]\frac{11}{16}[/tex]
To evaluate the expression, you multiply the two numbers together
[tex]\frac{1}{3} * \frac{11}{16} = \frac{1 * 11}{3 * 16} = \frac{11}{48}[/tex]
Evaluate. -1/2y + 3 = -12
Answer:
Y = 30
Step-by-step explanation:
hope this helps u out :)
3/10 + 1/4 in simplest form
Answer:
0.55 or 55/100 or 11/20
Step-by-step explanation:
Hey there!
3/10 + 1/4
≈ 6/20 + 5/20
= 6 + 5 / 20 - 0
= 11 / 20
Thus, your answer is: 11/20
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
How do you simplify 5 (3t) - 7 (2t)
Answer:
3t-2
Step-by-step explanation:
Multiply the terms 3t and 2t. You should get 5t.Subtract 7 from 5; you should get -2.Now, your equation is 3t-2, you're done!1. Is Pi a rational number?
2. Is 7 squared a rational number?
3. Is 7.1234... rational?
The classification of the numbers into rational and irrational are:
1. Pi is irrational
2. 7 squared is irrational
3. 7.1234... is irrational
How to identify a rational number?1) π is a mathematical expression whose approximate value is 3.14159365…
The given value of π is expressed in decimal which is non-terminating and non-repeating. As the value is non-terminating it shows the nature of irrational numbers. Hence, π is not a rational number
2) 7 squared is not a perfect square and as such it will have non-terminating and non-repeating decimal and so it is irrational.
3) 7.1234... is an irrational number because it is non-terminating and non-repeating decimal.
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Which equation could be solved using the graph above?
X^2+4x+3=0
X^2-4x+3=0
X^2-6x+9=0
X^2-1=0
Answer:
X²+4x+3=0
Step-by-step explanation:
y = X² + 4x + 3
y = 0
Solution:
x = -3, x² = -1
Steps:
X² + 4x + 3 = 0
write 4x as a sum
X²+ 3x + x + 3 = 0
Factor out x from expression
X (x + 3) + x + 3 = 0
Factor out x + 3 from expression
(x + 3) x (x + 1) = 0
When the product of factors equals 0, at least one factor is 0
x + 3 = 0
x + 1 = 0
solve for x
x = -3
x + 1 = 0
solve for x
x = -3
x = -1
The final solutions are
X = -3, X² = -1
Answer:
Option A.
Step-by-step explanation:
The vertex form of a parabola is
[tex]y=a(x-h)^2+k[/tex]
where, (h,k) is vertex and a is a constant.
The vertex of the parabola is (-2,-1).
Substitute h=-2 and k=-1 in the above equation.
[tex]y=a(x-(-2))^2+(-1)[/tex]
[tex]y=a(x+2)^2-1[/tex] .... (1)
The parabola passes through the point (0,3). So, it must be satisfy by the point (0,3).
[tex]3=a(0+2)^2-1[/tex]
[tex]3+1=4a[/tex]
[tex]a=1[/tex]
Substiturte a=1 in equation (1).
[tex]y=1(x+2)^2-1[/tex]
On simplification we get
[tex]y=x^2+4x+4-1[/tex]
[tex]y=x^2+4x+3[/tex]
It means the equation [tex]x^2+4x+3=0[/tex] could be solved using the given graph.
Therefore, the correct option is A.
A nurse mixes 60cc of a 50% saline solution with a 30% saline solution to produce a 35% saline solution. How much of the 30% solution should he use?
Final answer:
To create a 35% saline solution by mixing a 50% and a 30% solution, the nurse needs to use 6000cc of the 30% solution.
Explanation:
The question asks how much of a 30% saline solution a nurse needs to mix with 60cc of a 50% saline solution to achieve a final solution concentration of 35%. To solve this problem, let's denote the volume of the 30% solution needed as x cc. Using the concept of weighted averages for concentrations, we can set up the following equation:
(60cc × 50%) + (x cc × 30%) = (60cc + x cc) × 35%
Solving this equation, we get:
3000 + 0.3x = 0.35(60 + x)
3000 + 0.3x = 21 + 0.35x
Subtracting 0.3x from both sides:
3000 = 21 + 0.05x
Subtracting 21 from both sides and dividing by 0.05:
x = 6000 cc
Therefore, the nurse should use 6000cc of the 30% saline solution to achieve the desired concentration.
$35+0.50()=52 what does this equal
Answer:
[tex](34)[/tex]
Step-by-step explanation:
We are looking for what number times .50 makes the equation true.
So, just do backwards equation:
[tex]52 - 35[/tex]
[tex]==> 17[/tex]
Thus, meaning that what multiplied by 0.50 is equal to 17?
[tex]0.50 * 34[tex]
[tex]==> 17[tex]
Put any Variable in between the parentheses, for example x.
Step-by-step explanation:
1. Move the Constant 35 to the other side of the problem, and flip it's sign.
0.5(×)=52-35
2. Subtract the numbers
0.5×=17
3. Divide both sides of the equation by 0.5
×=34
40 seconds to 3 minutes | 3 dollars to 65 cents
Ratios simplified
Answer:
2 : 9, 60 : 13Step-by-step explanation:
We know:
1min = 60s → 3min = (3)(60s) = 180s
40s : 3min = 40s : 180s = (40/20) : (180/20) = 2 : 9
$1 = ¢100 → $3 = (3)(¢100) = ¢300
$3 : ¢65 = ¢300 : ¢65 = (300/5) : (65/5) = 60 : 13
How many solutions for x does the following equation have?
3(X + 8) - 1 = 3x + 4
A. 4
B. O
c.1
D. infinite
Answer:
B. No solutions.
Step-by-step explanation:
Let's try solving it:
3(x + 8) = 3x + 4
3x + 8 = 3x + 4.
There are no solutions because if we simplify we get an absurd result. Subtract 3x from both sides of the equation:
3x - 3x + 8 = 3x - 3x + 4
8 = 4.
There are no solutions for x in this equation.
Explanation:To solve this equation, we need to combine like terms and isolate the variable. Here are the steps:
Expand the brackets: 3(x + 8) - 1 = 3x + 4 becomes 3x + 24 - 1 = 3x + 4.Combine like terms: 3x + 24 - 1 = 3x + 4 becomes 3x + 23 = 3x + 4.Isolate the variable: Subtract 3x from both sides to get 23 = 4.Since 23 does not equal 4, these two sides are not equal. Therefore, there are no solutions for x in this equation.
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Write 230.071 in expanded form
The third number to the left of the decimal is the hundreds, so you have 200.
The 2nd number to the left of the decimal is the tens, so you have 30.
The first number to the left of the decimal is the ones, and you have 0 ones, so you have 0.
The first number to the right of the decimal is the tenths place, which is 0 so it is 0.0
The second number to the right is the hundredths place, which is 0.07
The third number is the thousandths place, which is 0.001
The expanded form becomes:
200 + 30 + 0 + 0.0 + 0.07 + 0.001
Answer:
230.071 = 200 + 30 + 0.07 + 0.001
Step-by-step explanation:
First, make the following table.
Hundreds: 2
Tens: 3
Ones: 0
Decimal: .
Tenths: 0
Hundredths: 7
Thousandths: 1
With the help of this table, now it is easy to write the expanded form as follows
230.071 = 200 + 30 + 0.07 + 0.001