Evaluate 390mm to 13cm as a ratio in its lowest terms

Answers

Answer 1

To evaluate the ratio of 390mm to 13cm, we convert 13cm to 130mm and then simplify the ratio of 390mm to 130mm to its lowest terms, which is 3 : 1.

To evaluate the ratio of 390mm to 13cm, we first need to express these measurements in the same unit. Converting centimeters to millimeters is simple: there are 10 millimeters in 1 centimeter.

Therefore, 13cm is equivalent to 130mm. Now, we can write the ratio as 390mm : 130mm. To simplify this ratio to its lowest terms, we divide both numbers by the greatest common divisor, which is 130 in this case. The simplified ratio is therefore 3 : 1.

The generalized description is as follows: quantity (in old units)  imes conversion factor = quantity (in new units). One must remember to simplify the ratio by dividing both the numerator and the denominator by their greatest common divisor, finalizing the answer without the '1' in the denominator when it's the only figure present.


Related Questions

The diameter of a small gear is 16 cm this is 2.5 more than 1/4 of the diameter of a larger gear ehat is the diameter of the larger gear

Answers

let's say the diameter of the larger gear is "x".

the small one has a diameter of 16cm, we know that, this is 2.5 more than (1/4)x.

[tex]\bf 16=\cfrac{1}{4}x+2.5\implies 16-2.5=\cfrac{x}{4}\implies 13.5=\cfrac{x}{4}\implies 4(13.5)=x \\\\\\ 54=x[/tex]

Which of the following points is a solution of the inequality y < -|x|?

a. (1,-2)

b. (1,-1)

c. (1,0)

Answers

a. (1,-2)
You can substitute each point into the inequality which gives you the answer of a

None of the given points is the solution to the inequality y < -|x|.

What is inequality?

A difference between two values indicates whether one is smaller, larger, or basically not similar to the other.

In other words, inequality is just the opposite of equality for example 2 =2 then it is equal but if I say 3 =6 then it is wrong the correct expression is 3 < 6.

As per the given inequality,

y < -|x|

As per the given below, the dotted line is not included in the region thus, point (1,-1) is not included.

Hence "None of the given points is the solution to the inequality y < -|x|".

For more about inequality,

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What is the value of y?



Enter your answer in the box.
y =

Answers

the answer to this question is y=28

Answer-

[tex]\boxed{\boxed{y^{\circ}=26^{\circ}\ 45'}}[/tex]

Solution-

As the triangle ABC is an isosceles triangle, with AC = BC.

So the angles A and B will be same, i.e

[tex]\Rightarrow \angle A=\angle B[/tex]

[tex]\Rightarrow 34^{\circ}=(x-5)^{\circ}[/tex]

[tex]\Rightarrow x^{\circ}=34^{\circ}+5^{\circ}[/tex]

[tex]\Rightarrow x^{\circ}=39^{\circ}[/tex]

As sum of all angles in a triangle is 180°, so

[tex]\Rightarrow \angle A+\angle B+\angle C=180^{\circ}[/tex]

[tex]\Rightarrow 34^{\circ}+39^{\circ}+4y^{\circ}=180^{\circ}[/tex]

[tex]\Rightarrow 4y^{\circ}=180^{\circ}-34^{\circ}-39^{\circ}[/tex]

[tex]\Rightarrow 4y^{\circ}=107^{\circ}[/tex]

[tex]\Rightarrow y^{\circ}=\dfrac{107^{\circ}}{4}[/tex]

[tex]\Rightarrow y^{\circ}=26.75^{\circ}[/tex]

[tex]\Rightarrow y^{\circ}=26^{\circ}\ 45'[/tex]

How can the pythagorean theorem be used to classify acute, right, and obtuse triangles?

Answers

you're familiar with the Pythagorean Theorem. ... triangle is equal to the sum of the squares of the other two sides, then the triangle is a right triangle.

Write the base of −(−6)^5.

Answers

Giving directions, describing an object etc, if you're in school it depends on the subject but note taking.


Which line is parallel to a line that has a slope of 3 and a y-intercept at (0, 0)?

line AB
line CD
line FG
line HJ

Answers

Line HJ is parallel to a line that has a slope of 3 and a y-int at (0,0). If you wrote this in slope intercept form, it is y=3x+0. The only line that has such a slope is the  red one.

Answer:

line HJ

Step-by-step explanation:

we know that

The equation of the line that has a slope of [tex]3[/tex] and a y-intercept at [tex](0, 0)[/tex] is equal to

[tex]y=3x[/tex] -----> is a proportional relationship

Remember that

If two lines are parallel , then their slopes are the same

Find the slope of the line HJ

[tex]H(-1,-4), J(1,2)[/tex]

The formula to calculate the slope between two points is equal to

[tex]m=\frac{2+4}{1+1}[/tex]

[tex]m=\frac{6}{2}[/tex]

[tex]m=3[/tex]

therefore

The line HJ is parallel to the line [tex]y=3x[/tex]

Jolinda scores 21 points during her basketball game. Her team scores a total of 28 points. What fraction of the team’s points does Jolinda score? Choose the answer in simplest form.

Answers

the answer is 21/28 and you simplify to 3/4 

Answer:

[tex]\frac{3}{4}[/tex]

Step-by-step explanation:

If Jolinda scored 21 points of 28 total, the fraction is:

[tex]\frac{21}{28}=\frac{3}{4}= 0.75(or75\%)[/tex]

Remember that a fraction is the representation of a portion among the total.

In addition, this fraction also would represent the effectiveness of Jolinda, we could say that she is able to score a 75% of team's points.

Please help me thank you.

Answers

It's going to be the symmetric property of equality. The property states that if [tex]a = b[/tex] then the equation [tex]b = a[/tex] is equivalent to the other equation.

solve the inequality
6n-3 > -18

a. n > -2.5
b. n > -3.5
c. n < -2.5
d. n > 2

Answers

-6n < -12
n > 2   {divided each side by -6 and changed the inequality sign}

B.)  n > 2

Look at the figure. If doing a two-column proof, what will be the very last statement?

Question 1 options:

X = 15


MN¯¯¯¯¯¯¯ = RS¯¯¯¯¯

Division Property of Equality


3x+3 = 5x-27

Save

Answers

When doing a two-column proof, the very last statement is usually the statement to be proved.

In the given question, we are required to prove that x = 15

Therefore, the very last statement of the two-column proof for the given figure is x = 15.

Consider kite FGHJ. What are the values of a and b?

Answers

Answer:

Hmmm... interesting on my final I answered B: a=14, b=8 and got it wrong but, when I did it again I got C: a=17, b=6

Step-by-step explanation

Answer:

The value of a=17 cm and b=6 cm

C is correct option.

Step-by-step explanation:

Given: FGHJ is a kite.

Kite has property their adjacent sides are equal. Top two side of the kite is equal and bottom two side of the kite is equal.

FG=GH because ∠F=∠H.

30=2a-4

2a=34

a=17 cm

Similarly, ∠F=∠H

FJ=HJ

3b+6=24

3b=18

b=6 cm

Hence, The value of a=17 cm and b=6 cm

The probability that an event will occur is 100%. Which of these best describes the likelihood of the event occurring?

Likely
Certain
Unlikely
Impossible

Answers

Certain because the probably that an event will occur is 100%

Answer: Certain

Step-by-step explanation:

A probability is from 0 - 1, if not 0 or 1 it is a fraction, percentage, or decimal. 100% also equal to 1 is the highest amount you can get, therefore the answer is certain.

Suppose you need to buy fabric to make costumes for a school play. The budget is $16 for each costume.

You need 12 costumes made from brown fabric. Each brown costume needs 3.25 yards of fabric. You need 8 costumes made from red fabric. Each red costume needs 3.5 yards of fabric.

You have gotten prices from two stores.
Store A: Brown fabric is $4.25 per yard. Red fabric is $4.75 per yard. On any purchase over $40, you will receive a $10 coupon for your next purchase. This store is 5 miles from school.
Store B: Both fabrics are $4.50 per yard. This store is walking distance from school.

What is the maximum budget for the fabric?

Answers

The maximum budget for the fabric is $320.
Hope this helped!
Multiply the total number of costumes and the budget for each costume.
20 x 16 = 320
The maximum budget for the fabric is $320

Solve the equation
9|9-8x|=2x+3 show work.

Answers

as you already know, an absolute value expression is a piece-wise in effect.

[tex]\bf 9|9-8x|=2x+3\implies |9-8x|=\cfrac{2x+3}{9}\\\\\\ \begin{cases} +(9-8x)=\cfrac{2x+3}{9}\\\\ -(9-8x)=\cfrac{2x+3}{9} \end{cases}\\\\ -------------------------------\\\\ 9-8x=\cfrac{2x+3}{9}\implies 81-72x=2x+3\implies 78=74x \\\\\\ \cfrac{78}{74}=x\implies \cfrac{39}{37}=x\\\\ -------------------------------\\\\ -(9-8x)=\cfrac{2x+3}{9}\implies -9+8x=\cfrac{2x+3}{9} \\\\\\ -81+72x=2x+3\implies 70x=84\implies x=\cfrac{84}{70}\implies x=\cfrac{6}{5}[/tex]
Final answer:

To solve the equation 9|9-8x|=2x+3, follow these steps: remove the absolute value by considering both positive and negative cases, combine like terms, solve for x, and simplify the solutions.

Explanation:

To solve the equation 9|9-8x|=2x+3, we need to isolate the variable x. Let's start by removing the absolute value by considering both positive and negative cases.

Case 1: Positive

9-8x = 2x+3

Combine like terms: -8x - 2x = 3 - 9

-10x = -6

Divide both sides by -10: x = -6/-10

Simplify: x = 0.6

Case 2: Negative

-(9-8x) = 2x+3

Distribute the negative sign: -9+8x = 2x+3

Combine like terms: 8x - 2x = 3 + 9

6x = 12

Divide both sides by 6: x = 12/6

Simplify: x = 2

Therefore, the solutions to the equation are x = 0.6 and x = 2.

Learn more about Solving Equations here:

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If the area of a square is 49 square inches, how long must each side be?

Answers

Area of a square=(side)²
or,49 = (side)²
or,side = √49 or 7

So, each side is 7 inch long
Hello There!

As you may know, all sides of a square are equal.
Area = side².
In this case:
49 = side²
side = √49
side = 7.
Each side is 7 square inches.

Hope This Helps You!
Good Luck :) 

- Hannah ❤

Rectangle ABCD is transformed to AB’C’D’ by a dilation .What is the scale factor used for the dilation ?

Answers

the scale factor should be 3

Answer:  The required scale factor that is used for the dilation is 3.

Step-by-step explanation:  Given that the rectangle ABCD is transformed to A'B'C'D' by a dilation.

We are to find the scale factor that is used for the dilation.

We know that

the scale factor of dilation is defined as

[tex]S=\dfrac{\textup{the length of a side of the dilated figure}}{\textup{the length of the corresponding side of the original figure}}.[/tex]

From the graph, we see that

in rectangle ABCD, the length the side AB is 2 units

and

the length of the corresponding side A'B' in the dilated rectangle A'B'C'D' is 6 units.

Therefore, the scale factor of dilation is given by

[tex]S=\dfrac{A'B'}{AB}=\dfrac{6}{2}=3.[/tex]

Thus, the required scale factor that is used for the dilation is 3.


Translate the following phrase into an algebraic expression or equation.
the square of the difference of two numbers

Answers

Let x and y be the two numbers.

(x - y)^2

Done.

What is the product of −412 and 212 ? Enter your answer as a mixed number, in simplified form, in the box.

Answers

Given that the statement requires the answer as a mixed number, it is evident that the factors involve fractions and not actually - 412 and 212.

It seems that the two factors are - 4 + 1/2 and 2 + 1/2.

Let's use latex for better underestanding:

[tex](-4 \frac{1}{2} ).(2 \frac{1}{2} ) = (-4 - \frac{1}{2} ).(2+ \frac{1}{2} )=(- \frac{9}{2} ).( \frac{5}{2})=- \frac{45}{4} = -( \frac{44 + 1}{4} ) = - 11 \frac{1}{4} [/tex]

Answer: - 11 1/4

What Is The Perimeter Of The triangle ? A(1,2) B(4,6) C(4,2)

Answers

check the picture below.

you can pretty much get AC and BC right off the grid.

now, let's check how long is AB then.

[tex]\bf \textit{distance between 2 points}\\ \quad \\ \begin{array}{lllll} &x_1&y_1&x_2&y_2\\ % (a,b) A&({{ 1}}\quad ,&{{ 2}})\quad % (c,d) B&({{ 4}}\quad ,&{{ 6}}) \end{array}\qquad % distance value d = \sqrt{({{ x_2}}-{{ x_1}})^2 + ({{ y_2}}-{{ y_1}})^2} \\\\\\ AB=\sqrt{(4-1)^2+(6-2)^2}\implies AB=\sqrt{3^2+4^2} \\\\\\ AB=\sqrt{9+16} \implies AB=\sqrt{25}\implies AB=5[/tex]

so the perimeter will then be AB + BC + AC.

solve the system by substitution
2x-y+z=-4
z=5
-2x+3y-z=10

Answers

Final answer:

To solve the system by substitution, substitute the value of z in the equations and solve them simultaneously.

Explanation:

To solve the system by substitution, we need to substitute the value of z in the other equations. Given that z=5, we can substitute this value in the first and third equations:

2x - y + 5 = -4

-2x + 3y - 5 = 10

Now, we can solve these two equations simultaneously to find the values of x and y.

Final answer:

To solve a system of equations by substitution, express one variable in terms of the other and substitute it into the other equations to eliminate that variable before solving for the remaining variables.

Explanation:

To solve this system of equations by substitution:

Start by expressing one variable in terms of the other variable from one of the equations. In this case, we can express z as 5 since it is given.Substitute the value of z into the other two equations to eliminate the variable z.Solve the resulting system of equations for the remaining two variables.

By following these steps, you can find the values of x, y, and z that satisfy the system of equations.

F(x) = |x − 1| find the derivative from the left at x = 1. if it does not exist, enter none.

Answers

Given:  f(x) = |x - 1|

A graph of the function is shown below.
The function is either
f(x) = x-1, for x>1
or
f(x) = 1-x, for x<1

Therefore
f'(x) = 1, for x>1
and
f'(x) = -1, for x<1

Answer: -1

sam and bethan share £54 pounds in the ratio 5:4 workout how much each person gets

Answers

ratio is 5:4

5+4 =9

54 pounds divided by 9 = 6

6*5 = 30

6*4 = 24

Sam gets 30 pounds Bethan gets 24 pounds

A solid right pyramid has a square base with an edge length of x cm and a height of y cm. Which expression represents the volume of the pyramid?

Answers

The correct expression representing the volume of the pyramid is:

[tex]\[ \frac{1}{3} \times x^2 \times y \[/tex]. Therefore the correct option is 2.

The volume [tex]\( V \)[/tex] of a pyramid is given by the formula:

[tex]\[ V = \frac{1}{3} \times \text{Base Area} \times \text{Height} \][/tex]

For a square pyramid, the base area is given by [tex]\( \text{Base Area} = \text{side length}^2 \)[/tex].

In this case, the side length is [tex]\( x \)[/tex] and the height is [tex]\( y \)[/tex]. Therefore, the expression for the volume [tex]\( V \)[/tex] is:

[tex]\[ V = \frac{1}{3} \times x^2 \times y \][/tex]

Now, let's compare this with the given options:

1. [tex]\( \frac{1}{3}xy \)[/tex] cm³

2. [tex]\( \frac{1}{3}x^2y \)[/tex] cm³

3. [tex]\( \frac{1}{2}xy^2 \)[/tex] cm³

4. [tex]\( \frac{1}{2}x^2y \)[/tex] cm³

Now, we can see that the correct expression representing the volume of the pyramid is:

[tex]\[ \frac{1}{3}x^2y \, \text{cm}^3 \][/tex]

So, the correct option is option 2: [tex]\( \frac{1}{3}x^2y \)[/tex] cm³.

The correct expression representing the volume of the pyramid is:

[tex]\[ \frac{1}{3} \times x^2 \times y \[/tex]

Complete question:

A solid right pyramid has a square base with an edge length of x cm and a height of y cm. Which expression represents the volume of the pyramid?

1. [tex]\( \frac{1}{3}xy \)[/tex] cm³

2. [tex]\( \frac{1}{3}x^2y \)[/tex] cm³

3. [tex]\( \frac{1}{2}xy^2 \)[/tex] cm³

4. [tex]\( \frac{1}{2}x^2y \)[/tex] cm³

A train travels from city a to city b and then to city
c. the distance from a to b is 200 miles and the distance from b to c is 70 miles. the average speed from a to b was 50 miles per hour, and the average speed from b to c was 35 mph. what was the average speed from a to c (that is for the entire trip) in miles per hour?

Answers

it would be 85 miles per hour your welcome for the answer

How many numbers are divisible by 100 between 1 and 6296?

Answers

62 numbers are divisible by 100 into a whole number

Twice a number decreased by seven

Answers

the equation would be 2n-7

PLEASE HELP ME BOTH MY TUTORS LEFT AT THE SAME TIME I NEED MAJOR HELP!!! PPPPLLLLEEEEAAAASSSSEEE


What is the length of an arc with a central angle of 5/4π radians and a radius of 34 centimeters?
Use 3.14 for pi.
Enter your answer, as a decimal, in the box.

What is the value of y?(picture)
Enter your answer in the box.
Round your final answer to the nearest whole number.

What is tanB ? (picture)
Enter your answer, as a simplified fraction, in the box.

Based on the diagram, what is tanA ?(picture)
Enter your answer in the boxes.

What is the value of x?
sin(x+34)°=cos(2x+20)°
Enter your answer in the box.

What is the value of x?
cos63°=sinx
Enter your answer in the box.

Answers

Problem 1

The formula to use is
s = r*theta

where,
s = arc length
r = radius
theta = angle in radians
Note: if the angle is not in radians, you have to convert it over to radians. However, in this case we are told the angle is "5pi/4 radians". So no conversion is needed.

In this case,
s = unknown (this is what we want to solve for)
r = 34
theta = 5pi/4
keep in mind that 5pi/4 is the same as (5/4)*pi

----------------------------

Plug the value of r and theta into the formula to get...
s = r*theta
s = 34*(5pi/4)
s = (34*5/4)*pi
s = 42.5*pi
s = 42.5*3.14
s = 133.45

----------------------------
----------------------------

Final Answer: 133.45

===============================================

Problem 2

sin(angle) = opposite/hypotenuse
sin(61.7) = 8/y
y*sin(61.7) = 8
y = 8/sin(61.7)
y = 9.08598042654456 ... use a calculator
y = 9 ... rounding to the nearest whole number

----------------------------
----------------------------

Final Answer: 9

===============================================

Problem 3

We need to know the length of BC. Let's call this x for now. Use the pythagorean theorem to find x

x^2 + 14^2 = 50^2
x^2 + 196 = 2500
x^2 + 196-196 = 2500-196
x^2 = 2304
sqrt(x^2) = sqrt(2304)
x = 48

So BC = 48 units long
Now we can compute the tangent of angle B

----------------------------

tan(angle) = opposite/adjacent
tan(B) = AC/BC
tan(B) = 14/48
tan(B) = 7/24

----------------------------
----------------------------

Final Answer: 7/24

===============================================

Problem 4

In this current stage, I cannot answer this question because the image isn't showing up. On my end, all I see is a black rectangle with no triangle showing. It seems like some kind of glitch is happening. Please repost this image. Thank you.

===============================================

Problem 5

There are multiple answers here so it seems like there should be a restriction. Does it state what the restriction must be? Please let me know. Thank you. 

===============================================

Problem 6

Rule:
sin(x) = cos(90-x)
where x is an angle in degrees

----------------------------

Using that rule mentioned above, we can replace the "sin(x)" term with "cos(90-x)" then solve for x

cos(63) = sin(x)
cos(63) = cos(90-x)
both arguments must be equal, so 63 must be equal to 90-x

63 = 90-x
63+x = 90-x+x
x+63 = 90
x+63-63 = 90-63
x = 27

----------------------------
----------------------------

Final Answer: 27

In Mrs. Johnson's class there are 28 student desks each desk measures 26.17 inches long if you were to line up all the desks end to end how long would all the desk be?

Answers

if you were to line them all up:

number of desks* how long it measures = total measurement 

28*26.17
=732.76 inches 

Consider the following equation, bh+hr=25 when solving for h

Answers

1.) Distribute out the h: h(b+r)=25
2.) Divide out b+r: h=25/(b+r)

The answer is 25/(b+r)

Answer:

[tex]h=\frac{25}{b+r}[/tex]

Step-by-step explanation:

Given equation,

[tex]bh+hr=25[/tex]

For solving this equation for h,

We need to isolate h in the left side of the equation,

We can write,

[tex]h(b+r) = 25[/tex]    ( by the converse of distributive property ),

Divide both sides by b + r,

[tex]h=\frac{25}{b+r}[/tex]

Which is the required equation.

factor by grouping: 12x^3-20x+3x-5

Answers

1,728x-23x-5
1,705x-5
There are no rational roots
F(x) = 4x^2+1
Group 1:  3x-5 
Group 2:  12x3-20x2 

This is going to take a long time to explain so the answer is just (12x2 - 12x - 5) • (x + 1)
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