Mathematics High School

The reading of a scale at one end is 3.5 cm and at the other end is 18.5 cm. Calculate the lengths of the needle

Answers

Answer 1

Answer:

15 cm

Step-by-step explanation:

Given that :

Reading at one end, initial reading = 3.5 cm

Reading at the other end, final reading = 18.5 cm

Length of needle :

Final Reading - Initial reading

18.5cm - 3.5cm

= 15cm

Related Questions

Evaluate the algebraic expression x^2 - 20 for x = 7 and for x = 9

Answers

Answer:

29

61

Step-by-step explanation:

x^2 - 20

x = 7 and 9

Evaluate

___________

We know the values of x, let's substitute them with the x in the problem :

(7)^2 - 20

49 - 20

29

(9)^2 - 20

81 - 20

61

A number n increased by 4 is -19

Answers

Answer:

n=23

Step-by-step explanation:

4-23=19

meme

Answer:

-23

Step-by-step explanation:

-23+4= -19


Can I get help on this math problem makes makes no sense

Answers

(2,-1) The intersecting point is the point where the two lines meet.

What is the slope of the line below asap plzzzzzzzzzzzzzzzzzzzzz quick

Answers

Answer:

w of king akinf arro

Step-by-step explanation:

Remember to do run (x) then jump (y).


This is where you find two parts of the line that hit a corner and find the x and y for them.


The question already tells us this. Remember that the x always goes first and that if the line is going down (left to right), the slope is a negative.


Answer: -2/3


Answer:

what is the degree of the following polynomial 2x^3

Answers

Answer:

3

Step-by-step explanation:

Whatever the highest exponent is determines the degree.

Which expression is equivalent to 4(9 + 7)?

Answers:
A. 36 + 7
B. 13 + 11
C. 36 + 28
D. 13 + 7

Will mark brainliest!!

Answers

the answer for this is C

Answer:

c 36+28

Step-by-step explanation:

the answer is c 36 + 28

if you could anwser the second question that would be great caus e i only get to do this proble once :) no explanation needed

Answers

Angle 1 and 2 are equal because of correspondence angle

so , (78-2x) = (89-3x)

x = 89 - 78

x = 11

hence angle 1 = ( 78 - 2*11) = 56

and angle 2 = ( 89-3*11) = 56

So, both of angle is 56

hope it help and your day will full of happiness

102 = 1.2 x w
what is w?

Answers

Answer:

122.4

Step-by-step explanation:

Just Divide.

Answer:

85

Step-by-step explanation:

1x2 x 85 = 102

pls help me i only have 5 minutes

Answers

Give instructions about sound, lighting etc

find the product of (x-3)^2

Answers

Answer:

x^2 - 6x + 9

Step-by-step explanation:

(x-3)^2

(x-3)(x-3)

x^2 -3x -3x + 9

x^2 - 6x + 9

^2 means (x - 3) times itself twice.

(x - 3)(x - 3)             multiplying polynomials- Firsts, Outs, Inners, Lasts (FOIL)

                                 Firsts (x* x)   Outs (x*-3)   Inners (-3 * x)   Lasts (-3*-3)

xx -3x -3x +9            Combine like terms.

      -3x -3x             Adding/subtracting integers- same signs means you add          

                                     and keep the sign.

x^2 -6x + 9              

Ali has invited 18 adults and 6 children to a cookout.
Mo, Ali’s best friend, suggests that Ali seat an equal number of adults and an equal number of children at each table.
What is the greatest number of tables Ali could use? How many adults and how many children would be seated at each table? Explain.

Answers

3 tables and is going to be 6 adults and 3 kids at each because you just have to divide 18 by 6

Answer:

Ali could use 6 tables. There would be 3 adults

and 1 child seated at each table.

Step-by-step explanation:

GCF to find the number of tables:

18: 1, 2, 3, 6 , 9, 18;

6: 1, 2, 3, 6 .

help please!! (math)

Answers

Answer:

It's gonna be C and good luck!

the answer is C lovely

A driver was going more then 15 miles per hour over the speed limit when he received a speeding ticket. If the driver's speed was 75 miles per hour, what was the speed limit, m, on the road where he was driving.

I need help with this ASAP!

Answers

Answer:

60

Step-by-step explanation:

You just subtract 75 - 15, and you get 60. I hope this helps :)

What is the solution set for –1 ≤ –2f + 1 ≤ 9?

Answers

The inequality for f is :
-4≤f≤1

Which is the graph of y = 3sqrt/X+1 - 2?

Answers

Look at the graph i sent you.

Graph of : y = 3sqrt(x+1) - 2

If f(1) = 9 and f(n) = 4f(n − 1) then find the value of f(4).

Answers

Answer:

576

Step-by-step explanation:

f(2) = 4f(1) = 4*9 = 36

f(3) = 4f(2) = 4 * 36 = 144

f(3) = 4f(3) = 4 * 144 = 576

-7m²-10m+17
common factor

Answers

Answer:

Greatest common factor of 17

So, the prime factors of 45 are 3, 3, and 5. The Greatest Common Factor is the greatest number that is common (that is, in both lists). It is 17. Since 17 is a factor of itself and of 51 -- which is 3 x 17 -- then the greatest possible common factor is 17!

Step-by-step explanation:

Add and subtract the second term to the expression and factor by grouping.

- (m - 1 )( 7m + 17 )

simplify this equation: 2^-4 (2√3)^2

Answers

Answer:

download photo math you can take pictures of math problems and will solve them.

Please Help. Im stuck on this question and i cant figure it out

Answers

Answer:

Where is it?

Step-by-step explanation:

Where is the question exactly?

It takes Serina 0.25 hours to drive to school. Her route is 16 km long. What is Serina’s average speed on her drive to school?

Answers

Answer:

64 km/hr

Step-by-step explanation:

How can you find the length of an arc

Answers

Start by dividing the arcs central angle in degrees by 360. Then, multiply that number by the radius of the circle. Finally, multiply that number by 2 x pi to find the arc length.


Explain how to solve the equation 21 = m +14. What is the value of m?
Enter your explanation and answer in the space provided.

Answers

Answer:

m = 7

Step-by-step explanation:

21 = m + 14

21 - 14 = m

m = 7

Camille's birthday party will cost $32 if she invites 16 guests. How many guests can there be, at most, if Camille can afford to spend a total of $48 on her birthday party? Assume the relationship is directly proportional.

Answers

Answer:

I think its gon be 24 guests

Answer:

24 people can be there at most :)

Step-by-step explanation:

$32 divided by 16(guests) is $2

so its $2 per person

so 48$ divided by $2 is 24

So Camille can invite 24 people at the cost of 48$ being her total at most :)

5x+4y=16 -2x-4y=-4
Show your step by step process.
Solve the system of linear equations.​

Answers

Answer:

x=1 and y= 5[tex]\frac{1}{4}[/tex]

Step-by-step explanation:

To solve this, lets take the first equation and find the x value.

Because it is ordered in standard form, we need to convert to slope-intercept form, and isolate the y.

5x+4y=16

-5x       -5x

4y=-5x+16

÷4   ÷4  ÷4

y=[tex]\frac{-5}{4}[/tex]+4

or

y=-1[tex]\frac{1}{4}[/tex]+4

or

y= 5[tex]\frac{1}{4}[/tex]

Now that we have the y value, we can use this to find the x value by inserting it into either equation, since they both have y values in them. Going with the first one again, lets try it:

5x+4([tex]\frac{-5}{4}[/tex]+4)=16

5x-5+16=16

5x+11=16

    -11 -11

5x=5

÷5 ÷5

x=1 and y= 5[tex]\frac{1}{4}[/tex]

7. What is the slope of the line that passes through the points (14, -18) and (5, -12)?​

Answers

Answer:

slope =[tex]-\frac{2}{3}[/tex]

Step-by-step explanation:

Use the slope formula [tex]m = \frac{y_2-y_1}{x_2-x_1}[/tex] to find the slope, or [tex]m[/tex]. The [tex]x_1[/tex] and [tex]y_1[/tex] represent the x and y values of one point, and the [tex]x_2[/tex] and [tex]y_2[/tex] represent the x and y values of another point. So, substitute the x and y values of the points (14, -18) and (5, -12) into the formula and solve:

[tex]m = \frac{(-12)-(-18)}{(5)-(14)}\\m = \frac{-12+18}{5-14}\\m = \frac{6}{-9} \\m = -\frac{2}{3}[/tex]

Thus, the slope is [tex]-\frac{2}{3}[/tex].

NEED HELP ASAP
A quarterback’s pass-completion percentage is 70%. Eight of his passes are randomly selected. What is the probability that 6 of them were successful passes?

0.06
0.08
0.12
0.30

Answers

Answer:0.08

The answer is b i always got your back

Step-by-step explanation:

Answer:

.30

Step-by-step explanation:

You travel 36 miles north and then 15 miles east. How far are you from your starting point?

Answers

Answer:

21 is the correct answer because

MATH HELP!! ASAP!!! MARKING BRIAINLIEST!!

Answers

Answer:

18 meters.

Step-by-step explanation:

The ratio is 1cm:2m, so for every centimeter, you multiply it by 2 and convert it to meters. So, 9 cm time 2 equals 18 and then add meters, so 18 meters.

(hope this helps :P)

A jacket is reduced by 12% to £66 in a sale.
Find the original price.

Answers

Answer:

£75

Step-by-step explanation:

100-12=88

88÷88=1%

66÷88=0.75

1%=0.75

times by 100

100%=£75

HELP I WILL GIVE LOTS OF POINTS FOR IT

Answers

Answer:

(1,3)

Step-by-step explanation:

because that is where they intersect

Answer:

y=4x-1y=−x+4

Step-by-step explanation:

Other Questions
What were the key points raised by DuBois in his criticism of Washington What is the number of moles of 60.7 liters of oxygen molecules? Misha practices the guitar for 3 hours every day.A 2-column table with 6 rows. Column 1 is labeled Days with entries 1, 2, 3, 4, 5, 6. Column 2 is labeled hours with entries 3, 6, 9, 12, 15, 18.Which equation models the situation?3 = hdh = 3dd = 3hh = d What year was the modern baseball error when no blacks were allowed to play? PLEASE HELP DUE IN 5 MINS Pls help Ill give brainlieast Which equation could be used to solve problems involving the relationships between the angles? A) 90+(8a+9)=(11+2a) B) 90-(8a+9)=(11+2a) C) (11+2a)-90=(8a+9)D) (8a+9)-(11+2a)=90 Which text would best be described as a myth?a story about an evil scientist who wants to rule the worlda history of sightings of unusual sea creaturesa report on ancient Greek gods and goddessesa story about a man who fights against an army by himself If 27.37ml of 0.2115M NaOH is able to neutralize 37.45 of HCl, what is the concentration of the acid? A scientist invents a car that can travel for many hours without stopping for fuel. The car travels around a track at 46 miles an hour for 24 hours. At the end of the 24 hours, how far has the car traveled HELP I'LL MARK BRAINLIEST!! What rights does the First Amendment guarantee to Americans? The ratio of boys to girls is 2 to 3. There are 10 boys. How many girls are in the club? What is the solution to the equation x+2--Ex-5?X=-8X=-7Ox=70X=8^^ picture how do you decompose a parallelogram into two triangles What is the cost of 1 pounds of apples halp me plez I dont wanna fail ( MUST BE A EXPRESSION) how do i graph y=1/2x+3 Im so confused on number 14 Explain why the elements in group 7 have 7valence electrons.