Let s = Car B's speed
Car B is 15 mph faster than A, therefore
(s - 15) = Car A's speed
Write a distance equation; dist = speed * time
2(s-15) = 1.5s
2s - 30 = 1.5s
2s - 1.5s = 30
.5s = 30
s = 60 mph is car B's speed
Confirm this find the distances, they should be equal
2 (60-15) = 90
1.5 (60) = 90
What is the product of x/3 and 6/x when x does not equal 0
Answer:
[tex](\frac{x}{3})(\frac{6}{x})=2[/tex]
Step-by-step explanation:
To solve this problem you must apply the proccedure shown below:
1. You have the following multiplication given in the problem above:
[tex](\frac{x}{3})(\frac{6}{x})[/tex]
2. Multiply the numerators and the denominators:
[tex](\frac{x}{3})(\frac{6}{x})=\frac{6x}{3x}[/tex]
3. You can simplify the expression. Then, you have:
[tex]\frac{6x}{3x}=2[/tex]
Answer:
2
Step-by-step explanation:
Because I did it on edge
Please give me brainliest
Pecan trees yield 45 pounds per acre and hazelnut trees yield 25 pounds per acre. Suppose Jenna's farm has p acres of pecan trees, h acres of hazelnut trees, and yields 900 pounds of nuts. What is the equation that represents this scenario? 70n = 900 25p + 45h = 900 a + m = 900 45p + 25h = 900
Let P = Pecan trees and H = Hazelnut trees.
Multiply the number of acres of each by the number of pounds of each acre:
45 pounds per acre of Pecan trees would be 45p
25 pounds per acre of hazelnut trees would be 25h
You would then add those together to get the total pounds of nuts:
45p + 25h = 900
The answer would be D, 45p + 25h = 900
Which fraction is NOT equivalent to 8/12 and why?
A. 2/3
B. 24/36
C. 4/6
D. 6/10
8/12 simplifies to 2/3 by dividing the top and bottom by 4
24/36 divide top and bottom by 12= 2/3
4/6 divide top and bottom by 2 = 2/3
6/10 divide top and bottom by 2 = 3/5
Choice D
look at the numerator and denominator. if you can use the same number to multiple or divde to get it
B is equivalent because 8/12 becomes 24/26 if I times by 3/3
The answers is A btw
3x+10y=13
4(-2y+x)-9x=13
Answer:
[tex]x=-9[/tex]
[tex]y=4[/tex]
Step-by-step explanation:
[tex]3x+10y=13[/tex] ← Equation 1
[tex]4(-2y+x)-9x=13\\[/tex]
By simplifying the above equation we get,
[tex]-8y+=4x-9x=13[/tex] (Simplifying the brackets)
[tex]-8y-5x=13[/tex] (By subtracting [tex]-9x[/tex] from [tex]+4x[/tex]) ← Equation 2
Multiply Equation 1 by 5 and Equation 2 by 3 and add them together.
Equation 1 multiplied by 5 will give,
[tex]15x+50y=65[/tex]
Equation 2 multiplied by 3 will give,
[tex]-24y-15x=39[/tex]
Add those together,
[tex]15x+50y-24y-15x=65+39[/tex]
[tex]26y=104[/tex] (After simplifying [tex]x[/tex] values)
Therefor [tex]y=4[/tex]
By substituting [tex]y=4[/tex] to Equation 1 we get,
[tex]3x+10*4=13[/tex][tex]3x+40=13\\3x=-27\\x=-9[/tex]
Therefor we can say,
[tex]x=-9[/tex]
[tex]y=4[/tex]
Divide 3,724 ÷ 6. What is the remainder? The remainder is?
The answer is 620.6666666666667
The remainder is 620.7 or 620.6
The Sumerian civilization believed in the divine right of kings.
True False
What is the solution to this equation? 2x+4=16
[tex]2x+4=16\\\\2x=12\\\\x=6[/tex]
The solution to the equation 2x + 4 = 16 is x = 6.
What is the solution to the equation?Given the equation in the question:
2x + 4 = 16
To solve the equation 2x + 4 = 16, first, isolate the variable term on one side by moving the constant term to the other side of the equation.
2x + 4 = 16
Subtract 4 from both sides of the equation:
2x + 4 - 4 = 16 - 4
2x = 16 - 4
Subtract 4 from 16:
2x = 12
Divide both sides of the equation by 2 to isolate the variable x:
2x/2 = 12/2
x = 12/2
x = 6
Therefore, the value of x is 6.
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6-x=5x+30
but I need it solved like the picture pls thanks!
6-x=5x+30
-x=5x+30-6
-x=5x+24
-x-5x=24
-6x=24
x=24/-6
x=-4
Hello there!
[tex]6-x=5x+30\\[/tex]
Explanation:
↓↓↓↓↓↓↓↓↓↓↓↓
First you had to subtract by 6 from both sides of the equation.
[tex]6-x-6=5x+30-6[/tex]
Simplify
[tex]-x=5x+24[/tex]
Then you subtract by 5x from both sides of the equation.
[tex]-x-5x=5x+24-5x[/tex]
Simplify
[tex]-6x=24[/tex]
Divide by -6 from both sides of the equation.
[tex]\frac{-6x}{-6}=\frac{24}{-6}[/tex]
Simplify it should be the correct answer.
[tex]x=-4[/tex]
Answer⇒⇒⇒⇒⇒x=-4
Hope this helps!
Thank you for posting your question at here on Brainly.
Have a great day!
-Charlie
I need help with this please
what two numbers multiply to -120 and add to -2
Hello!
To answer this question we need to find the factors of -120.
The total set (both negative and postive! ) are the following:
1, -1202, -603, -404, -305, -246, -208, -1510, -1212, -1015, -820, -624, -530, -440, -360, -2120, -1After looking over all of these factors, we can see that 10 · -12 is equal to not only -120, but when the multiplication sign is replace by addition, it is equal to -2!
Hope this helps.
Final answer:
The two numbers that multiply to -120 and add to -2 are 10 and -12. These satisfy the given conditions of multiplication and addition.
Explanation:
To find two numbers that multiply to -120 and add to -2, we can set up a system of equations based on the factors of -120. We know that if two numbers multiply to a negative number, one must be positive and the other negative. So we look for two factors of 120 with a difference of 2, given that one will be negative and the other positive.
Considering the factor pairs of 120: (1, 120), (2, 60), (3, 40), (4, 30), (5, 24), (6, 20), (8, 15), (10, 12), we find that 10 and -12 satisfy both conditions: 10 * -12 = -120 and 10 + (-12) = -2.
What’s the product of 4(-3)
100e^0.125t=200
A. t= ln(16)
B. t= ln(256)
C. t= 8ln(100)
D. t= 0.08ln(200)
To solve the equation 100e^0.125t=200 for t, divide by 100, apply the natural logarithm, and rearrange to find t=ln(2)/0.125, which simplifies to t=ln(16).The Correct Answer is Option. A.
Explanation:The question involves solving for the variable t in the exponential equation 100e^0.125t=200.
To solve this, we need to isolate the exponent on one side. Here are the steps to find the correct value of t:
Divide both sides by 100 to get e^0.125t = 2.Apply the natural logarithm (ln) to both sides to obtain ln(e^0.125t) = ln(2).Simplify the left side using the property ln(e^x) = x, resulting in 0.125t = ln(2).Finally, divide both sides by 0.125 to find t. This gives t = ln(2)/0.125.The correct answer from the given options is A. t= ln(16), as ln(2) / 0.125 = ln(16).
A jug contained 6qt of Kolkata. Tom drank 3/8 of the jug. How much did he drink?
Tom drank 2.25qt of the jug, in fraction form it would be 2 1/4
I need help on this
Answer in the attachment.
Line JK has the slope 3/4 and is perpendicular to line LM. What is the slope of line LM?
Answer:
The slope of line [tex]LM[/tex] is [tex]-\frac{4}{3}[/tex]
Step-by-step explanation:
Line [tex]JK[/tex] has the slope [tex]\frac{3}{4}[/tex] and is perpendicular to line [tex]LM[/tex]
Suppose, the slope of line [tex]LM[/tex] is [tex]m[/tex]
We know that, the product of the slopes of two lines which are perpendicular to each other is always [tex]-1[/tex]. So, the equation will be..............
[tex]\frac{3}{4}*m= -1\\ \\\frac{3m}{4}=-1\\ \\ 3m= -4\\ \\ m=-\frac{4}{3}[/tex]
So, the slope of line [tex]LM[/tex] will be [tex]-\frac{4}{3}[/tex]
rebecca made a cup of tea with a temperature of 90°c. she left it to cool, but forgot about it for 20 minutes, which meant that its temperature dropped by 74°c. she decided to reheat her tea in the microwave which increased its temperature by 58.7°c, and then she drank it. how hot was her tea at the point of drinking
74.7° C
90° - 74° + 58.7° = 74.7° C
Rebecca's tea was 74.7°C at the point of drinking after cooling and reheating.
Rebecca's tea started at a temperature of 90°C. After leaving it to cool for 20 minutes, its temperature dropped by 74°C, so the new temperature was
90°C - 74°C = 16°C.
When she reheated the tea in the microwave, the temperature increased by 58.7°C, resulting in a final drinking temperature of
16°C + 58.7°C = 74.7°C.
A ladybug's length is 2cm. Measure it in meters. And Explain your thinking.
1m = 100cm.
so since the ladybug is 2cm.
you divide 2 by 100, which you will get 0.02m (divide by 100 means moving the dot two times to the left. thats why it leaves you 0.02m)
0.02 meters would be the length of the lady bug because 1 cm is equal to 0.01 meters
Can I get some help on 3-5 please I don't understand how to do this :']
How to round 4.66 to the nearest hundredth
Shane and Karen want to measure the length of a soccer field. Should they use centimeters or meters to measure it. Explain
Hello!
They should most definitely use meters. Meters are much bigger than centimeters as centimeters are 1/100th of a meter. Meaning, it will take 100 centimeters to get 1 meter. A soccer field is a large surface, and to get a simpler number, you should use meters.
Hope this helps!
What is the value of f? 6f − 12 = −4f + 6
A. −9
B. −3/5
C. 1 4/5
D. 9
The answer is D! Aight hope it helped
The value of f in the equation 6f − 12 = −4f + 6 is 1 4/5.
Explanation:To answer the student's question, we need to solve the algebraic equation 6f − 12 = −4f + 6 for the unknown variable f. First, we want to get all terms with f on one side of the equation, and all constant terms on the other side. Thus, we'll add 4f to each side of the equation to eliminate -4f from the right side of the equation and get 6f + 4f = 6 + 12. This simplifies to 10f = 18, then we divide each side by 10, and we get f = 18/10 which reduces to f = 1 4/5 (Option C).
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I need help with this!
Solution
f(r) = 3.14[tex]r^{2}[/tex]
Now we have to find the area of the circle when the radius (r) = 4.
Plug in r = 4 in f(r) to get the area of the circle.
f(4) = 3.14[tex](4^{2} )[/tex]
f(4) = 3.14 * 4 * 4
f(4) = 3.14 *16
f(4) = 50.24
The answer is C. 50.24
5 decimal jumps to the right is a shortcut to what math
In this Decimal Point Movement question, Moving the decimal five places to the right in mathematics is a shortcut for multiplication by 105 (one hundred thousand). This uses the principle of powers of ten.
In mathematics, moving the decimal five places to the right is actually a shortcut for multiplying by 105, or 100,000. This concept utilizes the patterns in powers of ten. For instance, for any given number, we can count the zeros in the power of ten and then move the decimal point that same number of places to the right.
Illustrating with an example, let's say we have the number 5.27. If we multiply it by 105, we move the decimal five places to the right to get 527000. This aligns with the multiplication principle: when we multiply by 10, 100, 1000, and so on, each time, we are essentially incrementing the decimal place to the right.
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You have a normal distribution of hours per week that music students practice. The mean of the values is 8 and the standard deviation of the values is 4. According to the normal distribution model that corresponds to this population, what percentage of the students practice between 6 to 10 hours per week? Use the graph of the standard normal distribution given below to find the percentage. 19% 30% 34% 38%
Answer:
38%
Step-by-step explanation:
Given that X,the hours per week the music student practice follow a normal distribution.
X:N(8,4)
We have to find the percentage of students who practice between 6 and 10 hours.
6<x<10 implies converting to z
We know z = (x-mean)/sigma = (x-8)/4
Hence 6<x<10 is equivalent to (6-8/4)<Z<(10-8/4)
= |z|<0.5
From std normal table we find this area equals = 0.1915+0.1915
=0.3830 = 0.38 (rounded off)
Hence required percentage = 0.38x100 = 38%
Final answer:
To determine the percentage of music students practicing between 6 to 10 hours, we convert these hours to z-scores and use the standard normal distribution table, which reveals that approximately 38.2% of students practice within this range.
Explanation:
To find the percentage of music students who practice between 6 to 10 hours per week, we can use the properties of the normal distribution. We first need to convert the range values to z-scores using the formula Z = (X - μ) / σ, where X is the value from the data set, μ is the mean, and σ is the standard deviation.
Converting 6 hours to a z-score:
Z = (6 - 8) / 4 = -0.5
Converting 10 hours to a z-score:
Z = (10 - 8) / 4 = 0.5
Now we use the standard normal distribution table to find the probability corresponding to these z-scores. The area under the curve between z-scores -0.5 and 0.5 gives us the desired percentage. Looking up the z-scores in the standard normal distribution table, we find that the area between these scores is approximately 38.2%. Thus, 38% is the closest option provided.
jackie brought 3/4 gallon of ice tea to a party. bill brought 7/8 a gallon to party. How much ice tea did they have?
jackie brought 3/4 gallon of ice tea to a party
bill brought 7/8 of a gallon of ice tea to party.
To find total gallons of ice tea they hav[tex]\frac{3}{4} + \frac{7}{8}[/tex]e, we add the fractions
[tex]\frac{3}{4} + \frac{7}{8}[/tex]
To add two fractions , we make the denominators same
[tex]\frac{3*2}{4*2} + \frac{7}{8}[/tex]
[tex]\frac{6}{8} + \frac{7}{8}[/tex]
Now add the numerators
[tex]\frac{13}{8}[/tex]
So, They have [tex]1\frac{5}{8}[/tex] gallons of ice tea.
Kathy Stood on the middle rung of a ladder. She climbed up three rungs, moved down five rungs, and then climbed up 7 rungs. Then she climbed up the remaining 6 rungs to the top of the ladder. How many rungs are there in the whole ladder?
There are 13 rungs on the ladder :)
Answer:
23 rungs
Step-by-step explanation:
Let the number of rungs on the ladder be h and make the necessary adjustments based on this
Given that she is on the middle rung of a ladder this is equivalent to
= (h + 1)/2
She climbed up three rungs
= (h + 1)/2 + 3
moved down five rungs
= (h + 1)/2 + 3 - 5
and then climbed up 7 rungs
= (h + 1)/2 + 3 - 5 + 7
Then she climbed up the remaining 6 rungs to the top of the ladder
(h + 1)/2 + 3 - 5 + 7 + 6 = h
(h + 1)/2 + 11 = h
h + 1 + 22 = 2h
2h - h = 23
h = 23
one pump can empty the pool in 5 days, whereas a second pump can empty the pool in 7 days. how long it will take the two pumps, working together, to empty the pool?
The scale on the map is 1 cm to 10 km. The distance from Clevend to Cincinnati is 40cm. The scale on the second map is 1 cm to 50 km. What is the distance from Clevend to Cincinnati on the second map? Explain your reasoning
Using the concept of scale, we find that the distance between Cleveland and Cincinnati on the first map (1 cm to 10 km) is 40 cm, equivalent to 400 km in real-world distance. On the second map with a scale of 1 cm to 50 km, the equivalent distance is calculated to be 8 cm.
To calculate the distance between Cleveland and Cincinnati on the second map, we use the concept of scale. On the first map, the scale is 1 cm to 10 km, and the distance is represented as 40 cm. Scaling this to the real-world distance gives us 40 cm × 10 km/cm = 400 km between the two cities.
Now, let's apply the second map's scale of 1 cm to 50 km. To find the corresponding map distance, we set up a proportion: 10 km/cm (first map) / 50 km/cm (second map) = 40 cm (distance on the first map) / X cm (distance on the second map). Simplifying this, we find that X = 40 cm ×(10 km/cm) / (50 km/cm) = 40 cm × 1/5 = 8 cm.
Therefore, the distance between Cleveland and Cincinnati on the second map, which has a scale of 1 cm to 50 km, would be 8 cm.
If the circumference of a circle measures 8π cm, what is the area of the circle in terms of π?
Answer:
16π cm^2
Step-by-step explanation:
circumference of a circle = 2 * radius * π = 8π cm
so radius = 4 cm
area of a circle = radius * radius * π
= 4 * 4 * π
= 16π cm^2
Answer:
ans is 16pi cm2
Step-by-step explanation:
Circumference = Dia x pi = 8pi
Dia = 8
Area = Dia^2 x pi / 4 = 8^2 x pi / 4 =64 x pi /4
= 16pi
(20 POINTS!) Place the circles in order from the circle with the largest area to the circle with the smallest area.
1. Curcumfrance 37.68
2.Diameter of 16m
3. Radius of 7m
4. Diameter of 8m
Hope it Helps!!
The circle with the largest area to the circle with the smallest area.
Area of circle with diameter 16 cm > Area of circle with radius 7 m > Circumference of circle of 37.68 m > Area of circle with diameter 8 cm .
What is Area?Area is the entire amount of space occupied by a flat (2-D) surface or an object's shape. The area of a plane figure is the area that its perimeter encloses. The quantity of unit squares that cover a closed figure's surface is its area.
Given:
1. Area of Circle
= πr²
= 3.14 x 4 x 4
= 50.24 m²
2. Area of Circle
= πr²
= 3.14 x 7 x 7
= 153.86 m²
3. Circumference of circle = 2πr
37.68 = 6.28r
r= 6
Area of Circle
= πr²
= 3.14 x 6 x 6
= 113.04 m²
4. Area of Circle
= πr²
= 3.14 x 8 x 8
= 200.96 m²
So, Area of circle with diameter 16 cm > Area of circle with radius 7 m > Circumference of circle of 37.68 m > Area of circle with diameter 8 cm .
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