3. A wire of length 90 cm is cut into three pieces. The lengths of the pieces are in the ratio 3:5:7. Calculate the length of (a) the longest piece. (b) the difference between the longest and the shortest piece. 3:5:1 Wire length: 90 cm​

Answers

Answer 1

the difference between the longest and the shortest piece

Answer 2

Answer:

Step-by-step explanation:

First, simplify into the parts given by sum of ratio values.

90cm / 15 = 6 cm

(a) longest piece

= 7 x 6 = 42 cm

(b) difference between longest and shortest

shortest = 3 x 6 = 18 cm

Difference = 42 - 18 = 24 cm


Related Questions

What type of number is 0.55/0.55

Answers

It’s number 1 it’s a whole number because it has the same numerator and denominator

Answer:

Whole number

Step-by-step explanation:

Whole number because it equals one and one is a whole number.

What is an equation of the line that passes through the points (8,0) and (3,-5)?

Answers

Answer:

  y = x - 8

Step-by-step explanation:

You want an equation for the line through the points (8, 0) and (3, -5).

Slope

The slope of the line can be found using the formula ...

  m = (y2 -y1)/(x2 -x1)

  m = (-5 -0)/(3 -8) = -5/-5 = 1

Intercept

The y-intercept can be found from the equation ...

  b = y1 -m(x1)

  b = 0 -1(8) = -8

Slope-intercept equation

The slope-intercept equation of the line is ...

  y = mx +b

  y = 1·x +(-8)

  y = x -8 . . . . . an equation for the line

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This poster announces a special meeting. Who would have most likely put up this poster?

A. A plantation owner

B. A slave trader

C. A southern politician

D. An abolitionist

Answers

Answer:

an abolitionist

Step-by-step explanation:

a person who favors the abolition of a practice or institution, especially capital punishment or

Answer: D An Abolitionist

Step-by-step explanation:

a person who favors the abolition of a practice or institution, especially capital punishment or (formerly) slavery

pls give me brainlest <3

Please Help!!!!!

What is the surface area of the square pyramid represented by the net?

Enter your answer in the box.

ft?​

Answers

Answer:

39 ft^2

Step-by-step explanation:

To find surface area you add up the all the areas of the shapes.

Triangle:

5x3=15

15/2= 7.5

Since there are 4 triangles its 7.5x4 which is 30.

Square:

3x3=9

7.5+7.5+7.5+7.5+9 or 30+9= 39

39 ft squared.

Is it impossible for a triangle to be both right and acute

Answers

No I have attached proof

lol pls help me lol. I need to get this test done in like 10-20 minutes. I will give brainlyest.

Which number is not in scientific notation? (1 point)

A.) 7 • 1024
B.) 0.8 • 103
C.) 1.09 • 10–2
D.) 1.8 • 10–5

Answers

The answer to that is A

a cone has a volume of 150.72 cubic millimeters and a height of 9 millimeters what is the radius

Answers

The volume of a cone is the amount of space in the cone

The radius of the cone is 4.00 millimeters

How to determine the radius

The given parameters are:

Volume = 150.72 cubic mL

Height = 9 mL

The volume of a cone is calculated as:

[tex]V = \frac 13 \pi r^2h[/tex]

So, we have:

[tex]150.72 = \frac 13 \pi * r^2 * 9[/tex]

Divide

[tex]150.72 = \pi * r^2 * 3[/tex]

Divide both sides by 3

[tex]50.24 = \pi * r^2[/tex]

Rewrite the equation

[tex]50.24 = \frac{22}{7} * r^2[/tex]

Solve for r^2

[tex]r^2 = 50.24 * \frac{7}{22}[/tex]

Solve for r

[tex]r = 4.00[/tex]

Hence, the radius of the cone is 4.00 millimeters

Read more about volume at:

https://brainly.com/question/1972490

Select the correct answer. Brianna begins the construction of square EGFH inscribed in circle C by drawing GH, a diameter of the circle that is also a diagonal of the square. Next, she plans to use a compass to construct a perpendicular bisector of GH and mark points E and F at the intersections of the arcs she used to find the bisector. What error, if any, is Brianna making? A. She is not making any errors. B. She should name the diameter she first drew EG and name the new segment FH. C. She should use the compass to find the perpendicular bisector of GC instead of GH. D. She should define points E and F as where the perpendicular bisector of GH intersects the circle. Reset Next

Answers

Answer:

B. "She should name the diameter she first drew EG and name the new segment FH."

Step-by-step explanation:

Find the unit vector in the direction of (-2, 7).

Answers

Lets name the vector V: (-2,7)

U which is the unit vector is

  [tex]u = \frac{V}{||V||} = \frac{(-2,7)}{\sqrt{(-2)^{2} +(7^2)} } } = \frac{1}{\sqrt{53} } (-2,7) = (\frac{-2}{\sqrt{51} } ,\frac{7}{\sqrt{51} } )[/tex]

Hope that helps!

A scale on a map shows that 1 inch = 25 miles. How many inches on the map represent 100 miles? *

Answers

Answer:

4 inches

Step-by-step explanation:

Every 25 miles the map shows 1 inch
100 miles is equal to 4 x 25 miles, thus 100 miles on the map will be 4 times longer than 1 inch => 4 inches

p: x is an even number. If x = 3, then ~p is true or false

helpppp

Answers

Answer:

False

Step-by-step explanation:

2,4,6,8,10,12, ETC

What is the midpoint of the segment shown below?
A. (2, -3)
O B. (1,-})
O c. (2,-})
C D. (1, -3)

Answers

Answer:

B. (1, -3/2)

Step-by-step explanation:

Midpoint formula: (x₁ + x₂)/2, (y₁ + y₂)/2


1. Two containers are being filled with water. One begins with 10 gallons of water and is filled at a rate of 2.5 gallons per minute. The other begins with 24 gallons and is filed at 2.25 gallons per
minute.

Part A: Write an equation that represents the amount of water w, in gallons, with respect to time t, in minutes, for each container

Part B: Solve the system of equations. Show your work

Part C: How long would it take for both of the containers to have the same amount of water? How much water would be in each container?

Answers

Answer: PART A:

w-3.5 t=8

w-3.25t=24

PART B:

t=64

and w= 232

PART C:

It will take 64 minutes for both of the containers to have the same amount of water.

The amount of water in each container is:

232 gallons.

Step-by-step explanation:

PART A:

Let the water is filling in 't' minutes.

and 'w' denotes the amount of water in the container.

for container 1:

One begins with 8 gallons of water and is filled at a rate of 3.5 gallons per minute.

The equation is given by:

or

for container 2:

The other begins with 24 gallons and is filled at 3.25 gallons per minute.

The equation is given by:

or

PART B:

on solving equation (1) and equation (2) by method of elimination we get:

subtract equation (2) by equation (1) to obtain:

t=64

and  putting the value of t in equation (1) to obtain:

w= 232

PART C:

Hence it will take 64 minutes for both of the containers to have the same amount of water.

The amount of water in each container is:

232 gallons.

Step-by-step explanation:

what is 12-33/4 to iready

Answers

Answer:

3.75

Step-by-step explanation:

12 - 33/4

= 3.75

What is... 6x-(3x)+x-6?

Answers

Answer:

2(2x-3)

Step-by-step explanation:

H(n)=n+2

g(n) = 2n + 1

Find h(n) − g(n)

Answers

Answer:

-n + 1

Step-by-step explanation:

(n + 2) - (2n + 1)

n + 2 - 2n - 1

-n + 1

Answer:

[tex] \sf \: -n + 1 [/tex]

Step-by-step explanation:

Given information,

→ h(n) = n + 2

→ g(n) = 2n + 1

Now we have to,

→ find the value of h(n) - g(n).

Then required value will be,

→ h(n) - g(n)

→ (n + 2) - (2n + 1)

→ n + 2 - 2n - 1

→ (n - 2n) + (2 - 1)

→ (-n) + (1)

→ -n + 1

Hence, the value is -n + 1.

What is 6.729 x 8.3 (show ur work) thanks

Answers

Answer: 55.8507

Good luck

Which ratio best defines relative frequency? Number of nonfavorable outcomes:Number of possible outcomes Number of possible outcomes:Number of nonfavorable outcomes Total number of times an experiment is performed:Number of times an event occurs Number of times an event occurs:Total number of times an experiment is performed.

Answers

The ratio which best defines relative frequency is, number of times an event occurs:Total number of times an experiment is performed.

What is relative frequency?

Relative frequency of a event is the measure of something happens relative to the total outcomes of that event.

The relative frequency can be given as,

[tex]f_r=\dfrac{f}{n}[/tex]

Here, (f) is the frequency of the number of times data occurred in an event and (n) is the total number of outcomes.

The relative frequency can also be defined as, it is the ratio of subgroup frequency to the total frequency of any event.

Now, the ratio has to be find out which best defines relative frequency. Lets check options,

Number of non-favorable outcomes:Number of possible outcomes-Here, the non-favorable outcomes is asked but for the relative frequency the favorable outcomes is considered. Number of possible outcomes:Number of non-favorable outcomes-The number of total outcomes is considered for a relative frequency. Total number of times an experiment is performed:Number of times an event occurs-This ratio is inverse as the ratio of relative frequency.Number of times an event occurs:Total number of times an experiment is performed-This is the correct option, as it justify the definition of the relative frequency.

Hence, the ratio which best defines relative frequency is, number of times an event occurs:Total number of times an experiment is performed.

Learn more about the relative frequency here;

https://brainly.com/question/3857836





Answer:

To sum out whatever they said the answer is D

Step-by-step explanation:

All credit to the guy on top

How many 1/2 liter bottles of lemonade can you fill from a 2 1/2 liter container explain your answer

Answers

Answer:

5

Step-by-step explanation:

Container volume = 2 1/2 liters

Bottle volume = 1/2 liters

No. of bottles = Container vol. / Bottle vol.

= 2 1/2 / 1/2

= 5/2 / 1/2

= 5

2.5 divided by 1/2=5

5 lemonade bottles

HELP ASAP

what is the range of the data set 53,13,3441,26,61,,34,13,69

13

69

56

53

Answers

Answer:

Step-by-step explanation:

Range = Maximum value - minimum value

          = 69 - 13

           = 56

The pentagons ABCDE and JKLMN are similar. Find the length x of JK .
WILL GIVE 50 POINTS TO WHOEVER ANSWERS

Answers

Ratio remains same

[tex]\\ \rm\Rrightarrow \dfrac{x}{3.2}=\dfrac{2}{4}[/tex]

[tex]\\ \rm\Rrightarrow \dfrac{x}{3.2}=\dfrac{1}{2}[/tex]

[tex]\\ \rm\Rrightarrow x=3.2/2[/tex]

[tex]\\ \rm\Rrightarrow x=1.6[/tex]

A 2kg bag of flour provides enough flour for 25 rolls. How much flour is needed for 8 rolls in grams?

Answers

Answer:

640 gram 8 rolls

Step-by-step explanation:

2000 ÷ 25 = 80 gram 1 roll

80 × 8 = 640 gram 8 rolls

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What is the quotient ? StartFraction 7 Superscript negative 6 Over 7 squared EndFraction StartFraction 1 Over 7 Superscript 8 EndFraction StartFraction 1 Over 7 cubed EndFraction 73 78.

Answers

The quotient of the start fraction 7 superscript 7 negative 6 over 7 squared end fractions is,

[tex]\dfrac{1}{7^8}[/tex]

What is the quotient?

Quotient is the resultant number which is obtained by dividing a number with another. Let a number a is divided by number b. Then the quotient of these two number will be,

[tex]q=\dfrac{a}{b}[/tex]

Here, (a, b) are the real numbers.

The number given in the problem is,

[tex]\dfrac{7^{-6}}{7^2}[/tex]

Let the quotient of these number is n. Therefore,

[tex]n=\dfrac{7^{-6}}{7^2}\\[/tex]

Now if the power of numerator is negative, then it can be written in denominator with positive power of the same number. Therefore, the above equation written as,

[tex]n=\dfrac{1}{7^2\times7^{6}}\\n=\dfrac{1}{7^{2+6}}\\n=\dfrac{1}{7^8}[/tex]

Hence, the quotient of the start fraction 7 superscript 7 negative 6 over 7 squared end fractions is,

[tex]\dfrac{1}{7^8}[/tex]

Learn more about the quotient here;

https://brainly.com/question/673545

Answer:

It would be A. [tex]\frac{1}{7^{8} }[/tex].

Step-by-step explanation:

Hope this helps!

Write 9.45 x 10 in standard form.
PLEASE HELP!! NO LINKS WILL REPORT! Thanks

Answers

Answer:

0.945×10^2 is the answer to the question given

Answer:

the answer is b it's the most accurate of them all

How many triangles can be constructed with angles measuring 50ş, 90ş, and 40ş?.

Answers

If the angles of the triangle are 50, 90, 40 degrees, then only 1 triangle can be made. Because if you change the sides, the angles would change
:)

Please solve the equation in the image shown below

Answers

Answer:

h = 6.71

Step-by-step explanation:

6^2 + b^2 = 9^2

36 + b^2 = 81

36 - 36 = 0

81 - 36 = 45

b^2 = 45

square root of 45

b = 6.71

Find the diameter when the radius is 2

Answers

Answer:

4

Step-by-step explanation:

The diameter is 2 times the radius.

radius = 2

diameter = 2 × 2 = 4

Answer: 4

you have 120 red beads, loo white beads, and 45 blue beads. you want to use all the beads to make a bracelet that has red, white and blue beads on each. What is the greatest number of matching beads you can make? ​

Answers

Answer:

24 bracelets can be made from given beads.

● Explanation -To make similar bracelets using all the beads, we have to find the highest common factor of no of beads.Now, Factors of 72 => 1, 2, 3, 4, 6, 8 , 9, 12, 18, 24, 36, 72Factors of 192 => 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 192Factors of 120 => 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120HCF => 24Observing this data, HCF of 72, 192 & 120 will be 24.Therefore, total 24 bracelets can be made from given beads.* Each bracelet will have 3 red, 8 blue and 5 white beads.

Can someone help me with this coordinate plane thing ​

Answers

city hall would be at (0,0)
hospital would be at (8,5)
police station would be at (8,0)
middle school would be at (-8,-7)
baseball fields would be at (-8,7)
coffee shops would be at (-6,1)
library would be at (5,3)
grocery store would be at (8,-5)
not fully sure about the middle school or the grocery store ones because of how they’re worded but that’s what they should be :)

Slope of (7, -2) and (2, -6)

Answers

Answer:

[tex]\boxed{\sf{m=\frac{4}{5}}}[/tex]

Step-by-step explanation:

In order to solve this problem, we will use the slope.

Slope:

[tex]\sf\dfrac{Y_2-Y_1}{x_2-x_1}=\dfrac{rise}{run}[/tex]

y2=(-6)

y1=(-2)

x2=2

x1=7

Solve the problem by rewriting it down.

[tex]\sf{\dfrac{(-6)-(-2)}{2-7} }=\dfrac{(-6)+2}{2-7}=\boxed{\dfrac{4}{5} }[/tex]

m=4/5

Therefore, the slope is 4/5.

I hope this helps! Feel free to correct me if I am wrong.

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