Mathematics College

the sum of 2 numbers which are in a ratio 2:5 is 21 what are the numbers​

Answers

Answer 1

Ratio = 2 : 5

Numbers = 2x & 5x

[tex]2x + 5x = 21 \\ 7x = 21 \\ x = 21 \div 7 \\ x = 3[/tex]

Numbers :-

2x = 2 × 3 = 6

5x = 5 × 3 = 15.

The numbers are 6 & 15.

Related Questions

13+ 6.4+ 2.78 awnser ?

Answers

Answer:

22.28

Step-by-step explanation:

first add the decimals then the other number.

Find the value of x
Write ur answer in simplest form

Answers

Answer:

x = 10

Step-by-step explanation:

a² + b² = c²

(5√2)² + (5√2)² = x²

50 + 50 = x²

x² = 100

x= 10

Please Help!

1. If you take a Uber and they charge $5 just to show up and $1.57 per mile, how much will it cost you to go 12 miles? (Assume no tip.)

a. Create an equation from the information above.

b. Identify the slope in the equation?

c. Calculate the total cost of the ride?

2. With the same charges as #1, how many miles could you go with $50, if you also gave a $7.50 tip? (Challenge Question! Hint, you only have a $50, exactly, with you.)

Answers

Answer:

1. 23.84

a. Let x = Each mile

5 + 1.57x

b. Let Y = graph position

y = 5 + 1.57x

c. 23.84

2. 27 Miles

Step-by-step explanation:

HELPP I HAVE 12 MINUTES LEFTT

Answers

Answer:

6

Step-by-step explanation:

When you need to estimate, if the number is .4 or below, bring it down (1.4 will now be 1.)

This goes for both 1.4

so, 1 + 1.

Next, you have 4.1 (which is also below .5, so .4 or below.)

It is 1 + 1 + 4.

That is 6. Hope this helps a bit ^^ :>

Answer:

(see explanation)

Step-by-step explanation:

Rounding to whole numbers,

1.4 rounds to 1

4.1 rounds to 4.

1+1+4 = 6

However, if you're rounding to the nearest 0.5,

1.4 rounds to 1.5

4.1 rounds to 4.0

1.5 + 1.5 + 4.0 = 7

Identify the independent and dependent variables in the following situation: Julie notices that her plant grows one inch for every liter of water that it receives. Question 17 options: The independent variable is the type of tap water used, and the dependent variable is the amount of water the plant receives. The independent variable is the amount of water the plant receives, and the dependent variable is the height of the plant. The independent variable is the height of the plant, and the dependent variable is the number of pieces of fruit the plant produces. The independent variable is the height of the plant, and the dependent variable is the amount of water the plant receives.

Answers

Determine the independent variable and dependent variable in the situation

The independent variable is the "amount of water the plant receives", and the dependent variable is the "height of the plant".

An independent variable is a the variable which causes a change.

A dependent variable is the result or effect of a change.

Therefore, the independent variable from the phenomena is "amount of water" and the dependent variable is the "height of the plant".

Read more:

https://brainly.com/question/23700645

How do i solve this?????

Answers

Answer:

Step-by-step explanation:

The total cost of a candleholder and 5 candles is $27.50. The
candleholder cost $7.50. Use the equation 5x+7.50 = 27.50 to
find x, the cost of one candle.
A $5.00
B $4.00
C $4.50
D $5.50

Answers

D $5.50 is the answer for this question.

Hi, this is multiplication with decimals, help!

Answers

Answer:

Sean paid 0.25 more cents than Cal.

Step-by-step explanation:

Cal's problem: 2.4 * 2.55 = 6.12

Sean's problem: 2.6 * 2.45 = 6.37

Answer:

I think 0.25

Step-by-step explanation:

Multipled 2.4 and 2.55 then multipled 2.6 and 2.45. I got 6.12 and 6.37 Then subtracted them and got 0.25

Solve for x.
x = [?]
5x - 7/. 3x + 27

Answers

Step-by-step explanation:

5x-7+3x+27=180

8x+20=180

8x=160

x=20°.

hope this helps you.

Answer:

[tex]5x - 7 + 3x + 27 = 180 \\ 5x + 3x + 27 - 7 = 180 \\ 8x + 20 = 180 \\ 8x = 180 - 20 \\ 8x = 160 \\ d \: b \: s \: by \: 8 \\ 8x \div 8 = 160 \div 8 \\ x = 20[/tex]

Robert is making a scale model of his boat. The boat is 25 feet long. The scale he is uisng us 1 inch = 5 feet. How long is the scale?

Answers

It should be 5 inches

Answer:

5 inches

Step-by-step explanation:

Find the GCF of 224 and 78 by Euclid's steps.​

Answers

Step-by-step explanation:

hope this helps you dear sis.....

Answer:

Answer is given in the attachmentHope it's helpful!

Line k has an equation of y= 10/3x+9. Line l includes the point ( – 3, – 2) and is parallel to line k. What is the equation of line l?

Answers

You can write it in point-slope form like I did at the top, but I simplified it to slope-intercept (the answer with a square around it)

The equation of the parallel line which is passing through the point (–3, –2) will be y = (10/3)x + 8.

What is the equation of a parallel line?

Let the equation of the line be y = mx + c. Then the equation of the parallel line that is parallel to the line y = mx + c is given as,

y = mx + d

Line k has an equation of y= (10/3)x+9. Line l includes the point (–3, –2) and is parallel to line k.

y = (10/3)x + d

The equation of the line is passing through (–3, –2). Then the equation of the parallel line is given as,

–2 = (10/3)(–3) + d

–2 = –10 + d

d = 10 – 2

d = 8

The equation of the parallel line which is passing through the point (–3, –2) will be y = (10/3)x + 8.

More about the equation of a parallel line link is given below.

https://brainly.com/question/402319

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The midpoint of AB is M (4,2). If the coordinates of A are ( 6,-4) what are the coordinates of B?

Answers

Answer:

(2,8)

Step-by-step explanation:

m (4,2)

(6,-4)

(2,8)

a shelf is 24 inches

Answers

Answer:

Step-by-step explanation:

can you help me pls

Please help me thank you!!

Answers

Answer:

what the hell

Step-by-step explanation:

What is the solution to the following equation? Please help!

Answers

Answer :

D

Step By Step Explanation :

I need help with this math problem ASAP please an explanation too

Answers

Answer:

the answer is 300

Step-by-step explanation:

A polyhedron with 16 edges cannot be a prism. Explain why this must be true

Answers

Answer:

This prism has: 5 Faces. 6 Vertices (corner points) 9 Edges.

Step-by-step explanation:

Help with question 13 only please.

Answers

I think it is B

It makes the most sense to me to do that

solve each system by substitution.

-x + 4y = 6
y = -2x + 6

Answers

Answer:

(x,y)+(2,2)

Step-by-step explanation:

Find the circumference of a circle with a radius of 7 centimeters. Use 3.14 as an approximation for pi . Round your answer to the nearest whole centimeter. Enter only the number.

Answers

Hi this is the answer and explaination

I'm sorry if it's incorrect

hope's it's help

The circumcenter of a circle with a radius of 7 cm is, 44cm.

What is circumference?

Circumference is the distance around the perimeter of a circular object. It is defined as the length of the circle that is found by multiplying the diameter of the circle by π (pi), which is approximately equal to 3.14.

The formula for the circumference of a circle is given by: C = 2πr,

Given that,

The radius of circle = 7 cm

Substituting the given value of radius as 7 and using pi = 3.14,

we get:

Circumference = 2 × 3.14 × 7

                         = 43.96

Rounding this to the nearest whole centimeter, we get:

Circumference ≈ 44

Therefore, the circumference of the circle with a radius of 7 centimeters is approximately 44 centimeters.

To know more about circumference check:

https://brainly.com/question/4268218

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13 12 28 candy bars and 42 packs of gum were put in gift bags. The same number of candy bars and the same number of packs of gum were put in each bag. What is the greatest number of gift bags that could be made? ​

Answers

Answer:

Step-by-step explanation:

PLEASEE I NEEEDDD HELPPPPPP

Answers

Answer:

make a chart and it will be easy for you

Hello, can someone help with this 43 - + 13

Answers

Answer:

43-(+13)

43-13

=30

-× + would give you -

+×- would give you -

+×+ would give you -

-×-would give you +.

I need help please !!!

Answers

Answer:

ดำหเภสยาแไ_ะทบบใืกไภเืวบวมเพนยชตึภ/ภึรื

A rectangle prism has dimensions of 2 cm x 2 cm x 5 cm what is its surface area explain your reasoning

Answers

The surface area of a rectangle prism is 48cm²
The volume of a rectangle prism is 20 cm³
A rectangular prism is a three-dimensional shape with six faces and twelve sides.
Volume of a rectangle prism = length x width x height
2 x 2 x 5 = 20 cm³
Surface area of a rectangle prism = 2 ( lw + wh + lh)
Where:
l = length
w = width
h = height
Surface area = 2 x [ (2 + 2) + (2 x 5) + (2 x5) ]
=2 x (4 + 10 + 10)
= 2 x (24)
= 48 cm²

HELP ASAP PLSSS IM DESPERATE!!!! HELP IN 5MINS PLS!!!

Answers

Answer:

angle v and angle w,  

angle x and angle y

(the first one)

Which is an equation of the line through the origin and (3,4)? Please help
A. y = 4/3x
B. y = 3/4x
C. y = 4x
D. y = 3x

Answers

B is the answers………..

¿Qué es y cómo se forman un enlace químico?

Answers

Los enlaces químicos son las fuerzas de atracción que unen a los átomos. Los enlaces se forman cuando los electrones de valencia, los electrones en la “capa” electrónica más externa de un átomo, interactúan. ... Los átomos con electronegatividad igual o similar forman enlaces covalentes, en los que la densidad de electrones de valencia se comparte entre los dos átom

divide 7 by 12 to change 7/12 to a repeating decimal. 7/12 = 7 divided by 12 = ?​

Answers

Answer:

0.58333333....

can i have brainliest plz

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