Mathematics College

Solve each proportion 3/39= y/13

Answers

Answer 1

Answer:

[tex]y = 1[/tex]

Step-by-step explanation:

[tex] \frac{3}{39} = \frac{y}{13} [/tex]

Cross multiply

[tex]39 = 39y[/tex]

Divide by 39

[tex]y = 1[/tex]

Answer 2

Answer:

[tex]\boxed {\boxed {\sf y=1}}[/tex]

Step-by-step explanation:

To solve the proportion, we must solve for the variable. This is done by isolating the variable.

[tex]\frac {3}{39}= \frac {y}{13}[/tex]

The variable, y, is being divided by 13. The inverse of division is multiplication. Multiply both sides of the proportion by 13.

[tex]13*\frac {3}{39}= \frac {y}{13}*13[/tex]

[tex]13*\frac {3}{39}=y\\1=y[/tex]

Another way to solve is by cross multiplying. Multiply the 1st numerator by the 2nd denominator, then the 1st denominator and the 2nd numerator.

[tex]\frac {3}{39}= \frac {y}{13}[/tex]

[tex]3*13=39*y\\39=39y[/tex]

Divide both sides by 39 to isolate the variable.

[tex]39/39=39y/39 \\1=y[/tex]

In this proportion, y is equal to 1.

Related Questions

ASAP

a golden bar has a mass of 12.5kg. the density of gold is 19.3 g/cm^3. work out the volume of the gold bar. give your answer to correct 3 sf.

Answers

Answer:

647.668 cm³

Step-by-step explanation:

12.5 kg = 12500 g

12500 g/19.3 g/cm³ = 647.668 cm³

The answer is 647.668 cubic centimeters

Help with this please

Answers

Answer:

its 77 degrees

Step-by-step explanation:

the angles altogether are 180 so you subtract 61 and 42 and get 77

-x+4=-9 help me please

Answers

Answer:

-13 = x

Step-by-step explanation:

:))

Answer: x = 13

Step-by-step explanation:

First subtract -4 on both sides because your adding by 4

-x + 4 = -9

    -  4    -4

The 4 - 4 cancels out

So, -9 - 4 is -13

Then we change the sign because we cannot leave x negative.

-x = -13

x = 13  

Question 5 (1 point)
If y varies jointly as x and z and y = 18 when x = 2 and z = 3, find y when x is 5 and z is 6.

Answers

Answer:

y = 90

Step-by-step explanation:

If y varies jointly as x and z, then;

y = kxz

If y = 18 when x = 2 and z = 3

18 = k(2)(3)

18 = 6k

k = 18/6

k = 3

To get y when x = 5 and z = 6

y = kxz

y = 3(5)(6)

y = 15*6

y = 90

Hence the value of y is 90

What is the average weight of the kittens in the shelter?




Pls help

Answers

Answer:

0.41

Step-by-step explanation:

0.25 0.375 0.5 0.625

Select the value of x that makes the equation “16 = -4(x - 1) + 4” true?
• -2
• 2
• -4
• 4

Answers

Answer:

[tex] - 4(x - 1) = 16 \\ = > - 4x + 4 - 16 = 0 \\ = > - 4x - 12 = 0 \\ = > - 4x = 12 \\ = > x = - 3[/tex]

Can you help me with this work please?

Answers

9514 1404 393

Answer:

  OL = 7

Step-by-step explanation:

Triangle JKL is isosceles and N is the midpoint of JL, so NL = NJ = 14.

Triangle LMN is isosceles and O is the midpoint of NL, so NL = 2(OL).

  OL = NL/2 = 14/2

  OL = 7

__

There is no WY.

Please help me with this!

Answers

Answer:

Step-by-step explanation:

Its going to be a negative

negative, if wrong so sorry

The midpoint AB is M (1,1). If the coordinates of A are (-3,-3), what are the coordinates of B

Answers

Answer:

(2,−4).

Step-by-step explanation:

Hope this helps and have a wonderful day!!!!

Can someone help me with this?

Answers

Answer:

do you still need help?

Step-by-step explanation:

Find the perimeter of this L shape.

Answers

Answer: undefined, not enough information

Step-by-step explanation:

Answer:

15+19 =34 is the perimeter of the closed figure

hope it helped you

(ANSWER IN 2 MINUTES AND I SWEAR I'LL GIVE YOU BRAINLY!!!!!!!!!!!!!)

Analyze the following statements and indicate which one best describes the difference between the population and the sample.


A) The sample is all members of a specified group while the population is part of a sample used to describe the whole group

B) In Statistics, the terms population and sample are synonymous with one another and can be used interchangeably

C) The population is all members of a formal organization while the sample is the members of the organization that volunteer to participate in the study

D) The population is all members of a specified group while the sample is the part of a population used to describe the whole group

Answers

The answer will be B

Pleaseeeeeee helpppppppppppppppp

Answers

Answer:

itz A

Step-by-step explanation:

Love you hun;)

Can u please give me the real answer I really need help☹️

Answers

Answer:

12,000 g = 12000000 kg

120 cm = 1200 mm

1.2 L = 1200 L

1200 cm = 12 m

0.12 m = 120 mm

The diameter of a circle is 10 ft. Find its area to the nearest tenth.

Answers

Answer:

15.70

Step-by-step explanation:

Answer:

78.5

Step-by-step explanation:

Formula: a = πr², r = d/2

Given: π = 3.14, d = 10

Sub: a = (3.14)r²

Find r.

r = 10/2

r = 5

Sub: a = (3.14)5²

Simplify: a = (3.14)25

Solve: a = 78.5

The answer is 78.5.

If this truly helped you, help me out by thanking me.

-Xax.

Simplify.
Remove all perfect squares from inside the square root. Assume x is positive.
√ 20x^8

Answers

Here ya go hope ya have a great day ^>^

solve for x please show work... i will give you brainliest

Answers

Answer:

82°

Step-by-step explanation:

total wine of quadrilateral=360°

130+ 46+ 102 +x =360

x=360- 278

x=82°

Please help I’ll mark you as brainliest if correct

Answers

Answer:

B

Step-by-step explanation:

What is the area of the right angle

Answers

Answer:

3.84 inches squared

Step-by-step explanation:

The area of a triangle is given by the formula:

Area = 1/2 * base * height

In this problem, our side lengths are:

Base = 2.4 inches

Height = 3.2 inches

So, our area can be found:

Area = 1/2 * 2.4 * 3.2 = 3.84 inches squared

11x-6=7x+10 please help i need this bad for my grade

Answers

Answer:

x = 4

Step-by-step explanation:

Answer:

x=4

Step-by-step explanation:

Step 1: Subtract 7x from both sides.

11x−6−7x=7x+10−7x

4x−6=10

Step 2: Add 6 to both sides.

4x−6+6=10+6

4x=16

Then you divide both sides by 4

and get x=4

Hope it helps :)

help is appreciated as soon as possible, look at the photo!

Answers

31 cm im pretty sure
The person above me is right 31 cm

Use a net of the square puritans if Jessica ty to find the surface area of pyramid 8 and 8

Answers

Answer:

Step-by-step explanation:

Hhff

match it to its definitions !

•ILL GIVE BRAINLIEST !! & 100 POINTS

Answers

Answer:

1) D ; 2) E ; 3) B ; 4) C ; 5) A

Step-by-step explanation:

Answer:

1. Corresponding = D

2. Alt Interior = E

3. Vertical = B

4. Alt Ext = C

5. Straight = A

What is the slope of a line parallel to the line whose equation is 9x+3y=-27
Fully simplify your answer.

Answers

Answer:

One example would be y = -3x

Step-by-step explanation:

We can more easily find a line parallel to the given equation if it is put in slope intercept form.

3y = -27 - 9x

y = -3x - 9

So the slope is -3. You can choose any line also with a slope of -3.

rewrite the following 7(3+5=___+___​

Answers

Answer:

21+35

Step-by-step explanation:

use distributive property, multiply 7 by the two numbers in the parenthesis

keep the problem though.

HELP PLEASE In which table does y vary directly with x

Answers

Answer:

x  y

1   3

2   6

3    9

Step-by-step explanation:

That's the answer for Plato correct!

find the value for x

Answers

Answer:

X = 6°

Step-by-step explanation:

In a set of parallel lines, the opposite angles and corresponding angles are similar. Since the opposite angle of 110° is the corresponding angle of 19x - 4, you can conclude that 19x - 4 = 110° ⇒ 19x = 114° ⇒ x = 6°.

If you multiply four times the sum of my number and 2,
you get 28. What's my number?

Answers

Answer:

5

Step-by-step explanation:

5+2 = 7

7x4 = 28

A=8b+c solve for b
Please help!

Answers

Answer:

(A-c)/8 = b

Step-by-step explanation:

A = 8b +c

A - c = b

(A-c)/8 = b

Hope this helps you!

A. 16
B. 14
C. 18
D. 24

Answers

I’m thinking the answer is 18
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