Solve each equation. Show your thinking.

a. 5x-10=30

b. 3x+8=21

Answers

Answer 1
Add ten from both sides and then divide 40 of 5x its 8
B subtract 8 from both sides 13 divide by 3 answer is 13/3
Answer 2

Answer:

A) X = 8

B) X = 4.3 or 13/3

Step-by-step explanation:

A) 5x - 10 = 30

(add ten to both sides)

    5x = 40

(divide by 5 on both sides)

    x = 8

B) 3x + 8 = 21

(subtract 8 to both sides)

    3x = 13

(divide by 3 on both sides)

    x = 4.3 or 13/3

Hope this helped!


Related Questions

Which statement represents the number line shown?

A)x = 6

B)x > 6

C)x < 6

D)x ≠ 6

Answers

Answer:

B

Step-by-step explanation:

open circle means no underline and it is past the 6 so it is B

the answer is A, x=6
explanation: look at the line and where it’s plotted, u can put your finger on it and you’ll see :) hope this helps

El ser vivo mas pequeño es un virus que pesa de orden de 10-8 grs, y el mas grande es la ballena azul que pesa aproximadamente 138 Tns. ¿Cuantos virus seràn necesarios para conseguir el peso de la ballena ?

Answers

Answer:

ifabmhxm Myers stentxehbetzegxnbwzryo3

Multiply (2.3 x 10^-5) (3.1 x 10^12

Answers

Answer:

71300000

Step-by-step explanation:

See the image below:)

A come has a slant height of 15 centimeters and a height of 12 centimeters. What is the radius

Answers

Answer:

The radius is 9cm.

Step-by-step explanation:

225 cm - 144 cm = 81 cm

√81 cm = 9 cm

pls help
The distance from the Earth to the Sun is approximately 93,000,000 miles. What is this distance expressed in scientific notation? Answer options with 5 options A. 9.3 times 10 Superscript 6 Baseline miles B. 9.3 times 10 Superscript 7 Baseline miles C. 9.3 times 10 Superscript 8 Baseline miles D. 93 times 10 Superscript 6 Baseline miles E. 93 times 10 Superscript 7 Baseline miles

Answers

Answer:

B. 9.3 x 10^7

Step-by-step explanation:

9.<3<0<0<0<0<0<0.

Move the decimal point until there is only one whole number left.

How do you do this???


Given tan Ф = 4/5, find all other trig functions.

Answers

let : y = Opponent side, x= Adjecent side

and r= hypotenuse

tan = 4/5

y/x = 4/5 => y =4, x=5

so, r = √4²+5²=√16+25=√41

sin = y/r = 4/ √41

cos = x/r = 5/√41

tan = y/x = 4/5

csc = r/y = √41 /4

sec = r/x = √41 /5

cot = x/y = 5/4

Which linear inequality is represented by the graph?
2
1
5 4 3 2 1
o ya x-4
oys x-4
ys-x+4
oyz x+4
3
-2-
3
Save and Exit
Next
Submit

Answers

The required equation will be y ≤ 1/3 x - 4

The standard form of a linear equation is y = mx + b

m is the slope of the lineb is the y-intercept

Using the coordinate points (0, -4) and (3, -3)

m = -3+4/3-0

m = 1/3

Since the line cross the y-axis at y = -4, henc b = -4

Get the required equation;

y = mx + b

y = 1/3x - 4

Since the line is solid and shaded below, hence the required equation will be y ≤ 1/3 x - 4

Learn more inequality here: https://brainly.com/question/11613554

A bag contains five red marbles, two orange marbles, one yellow marble, and two green marbles. Two marbles are drawn from the bag. What is the approximate probability one of the chosen marbles is orange and one of the chosen marbles is green? 0.02222 0.04444 0.08889 0.13333

Answers

Answer:B .04444

Step-by-step explanation: Edg

The probability of drawing an orange and a green marble is P = 0.08889

How to find the probability?

Let's assume that the first marble drawn is orange.

The probability of drawing an orange marble is equal to the quotient between the number of orange marbles and the total number of marbles on the bag, so the probability for this first event is:

p = 2/(5 + 2 + 1 + 2) = 2/10 = 1/5

Then we need to draw a green one, but notice that we already drew a marble, so now the total number of marbles is 9, then the probability will be:

q = 2/9

The joint probability is the product of these two, and we also need to add a factor of 2, because we also need to take in consideration the case where the first marble is green and the second is orange, then we will get:

P = 2*(1/5)*(2/9) = 0.08889

We can see that the correct option is the third one.

If you want to learn more about probability:

https://brainly.com/question/25870256

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number 7:

In ABC triangle, AB= 1.8cm, BC= 8cm and AC= 8.4cm

Does this triangle contain a right angle? If your answer is ‘yes’, state which angle it is and justify your answer

pls help

Answers

Answer:

yes, this triangle contain a right angle ,and it is B, because CB is the base and AB is the height.

write and equation for a straight line that has a slope of -1/2 and a y-intercept of 5

Answers

Answer:

Y = - 1/2 x + 5

Step-by-step explanation:

Answer: B - y=−3x+5

Explanation: The slope-intercept equation for a straight line is y=mx+b,

where m is the slope and b is the y-intercept.

The required equation is y=−3x+5

What is the solution to this system of equations?

3x-2y=5
x+2y=7

x=_, y=_

Answers

Step 1) Solve the second equation for

x

:

x

+

3

y

=

5

x

+

3

y

3

y

=

5

3

y

x

+

0

=

5

3

y

x

=

5

3

y

Step 2) Substitute

5

3

y

for

x

in the first equation and solve for

y

:

3

(

5

3

y

)

2

y

=

7

15

9

y

2

y

=

7

15

11

y

=

7

15

15

11

y

=

15

+

7

0

11

y

=

22

11

y

=

22

11

y

11

=

22

11

11

y

11

=

2

y

=

2

Step 3) Substitute

2

for

y

in the solution to the second equation at the end of Step 1 and calculate x:

x=−5−(3×−2)

x=−5−(−6)

x=−5+6

x=1

The solution is x=1 and y=−2

Answer:

Step-by-step explanation:

what expression is equivalent to 3(x+6)

Answers

Answer:

efthybybybybybybyh

Step-by-step explanation:

rvvttbyby4nun4unrruneun

Answer:

3x+18

Step-by-step explanation:

p and q are both prime numbers.

They are each less than 22

Give an example where p+q is odd but not prime.

You must only write the two numbers in the answer box.

0

Answers

Answer:

p = 2

q = 7

..................

The two numbers are,

⇒ p = 13 and q = 2

What are Prime numbers?

Prime number is a whole number greater than 1 whose only factors are 1 and itself.

Here, p and q are both prime numbers and each less than 22.

Now, Both number p and q are prime numbers.

Let p = 13 and q = 2

Clearly, The number 13 and 2 both are prime numbers and less than 22.

Hence, p + q = 13 + 2 = 15

Since, 15 is an odd number but not prime.

So, The two numbers are,

p = 13 and q = 2

Learn more about the prime numbers visit:

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The basketball team consists of 1 freshman, 2
sophomores, 4 juniors, and 3 seniors. The coach wants
to randomly name a captain for the next game. What is
the probability, written as a decimal, that the person
chosen will be a junior?

Answers

Answer:

0.4

Step-by-step explanation:

4 juniors out of a total of 10

4/10 = 0.4

Can someone please help me with the second question in the picture.

Question: state the coordinates of a point in its solution.

Answers

Answer:

Step-by-step explanation:

The solution space is all the points to the right of the dotted line.  Points ON the dotted line are not part of the solution (because dotted means excluding points on the line).

Example of points could be (0, 6), (3,0), (4,4), there is no limit to the number of solution points.

In a geometric sequence, g(3) = 1 and g(8) = 32. Which recursive definition produces this geometric sequence?

Answers

Step-by-step explanation:

a geometric sequence means every new element is created by multiplying the previous element always with the same number.

a n = a n-1 * number

a n = a1 * number^(n-1)

=> a8 (or g(8)) / a3 (or g(3)) = number^5 (5=8-3)

=> 32/1 = number^5

=>

[tex]number = \sqrt[5]{32} [/tex]

number = 2

and what is the starting a1 ?

it must satisfy e.g. a3

1 = a1 * 2^2

=> a1 = 1/4

therefore, the requested definition looks like

g(1) = 1/4

g(n) = g(n-1) * 2

The profit P, in millions, of Company A is given by the equation P=7.5x +17, where x is the number of years in business. The profit P, in millions, of Company B is given by the equation P=4.1x +12. Write a polynomial equation to give the "difference" in profit D after x years.

Answers

Answer:

The polynomial equation to give the difference in profit D after x years is:

D = 3.4x + 5

Step-by-step explanation:

To obtain the difference in profit between the Companies A and B you can subtract the equation of company B to the equation of company A:

Profit Company A = 7.5x +17Profit Company B = 4.1x +12Difference between profits (D) = 7.5x +17 - (4.1x + 12)

And we operate:

D = 7.5x + 17 - 4.1x - 12D = 7.5x - 4.1x + 17 - 12D = 3.4x + 5

We can prove the obtained equation selecting a number of years to operate the profit equations, for example, we're gonna suppose the number of years is 3 (x = 3), we replace the formulas of profits:

Profit Company A = 7.5x +17Profit Company A = 7.5 * (3) +17Profit Company A = 22.5 +17Profit Company A = 39.5 millions

Profit Company B = 4.1x + 12Profit Company B = 4.1 * (3) + 12Profit Company B = 12.3 +12Profit Company B = 24.3 millions

Now, we subtract the two values:

Difference between profits = 39.5 millions - 24.3 millionsDifference between profits = 15.2 millions.

At last, using our equation with the same number of years, the calculation must give us the same value (15.2 millions):

D = 3.4x + 5D = 3.4 (3) + 5D = 10.2 + 5D = 15.2

As you can see, the polynomial equation D = 3.4x + 5 is the correct to identify the difference in profit between the Companies A and B.

Answer:

D=0.5x+2

$7000000

Step-by-step explanation:

Convert the degree measure into radians.
330°
A 11pi/6
B 11pi/3
C 6pi/7
D 4pi/3

Answers

Answer: A.

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

we have 2pi = 360°

=> 2pi× 330/360 = 360° × 330/360

=> 11pi/6 = 330°.

Please keep asking if you still have trouble understanding

A 2-cup bottle of shampoo costs $11.20. What is the price per fluid ounce?

Answers

per fluid ounce  is 20 cents

please help to solve this ​

Answers

Answer:

☥ [tex] \underline{ \underline{ \red{\large{\tt{S \: O \: L \: U \: T \: I \: O \: N}}}}} : [/tex]

Let Cost Price ( CP ) be x

☃ [tex] \large{ \tt{MP = x + 30\% \: of \: x}}[/tex]

➝ [tex] \large{ \tt{x + \frac{30}{100}x }}[/tex]

➝ [tex] \large{ \tt{x + 0.3x }}[/tex]

➝ [tex] \large{ \tt{1.3x}}[/tex]

☂ [tex] \large{ \tt{SP = 1.3x - 15\% \: of \: 1.3x}}[/tex]

⇾ [tex] \large{ \tt{1.3x - \frac{15}{100} \times 1.3x}}[/tex]

⇾ [tex] \large{ \tt{1.3x - 0.195x}}[/tex]

⇾ [tex] \large{ \tt{1.105x}}[/tex]

☼ [tex] \large{ \tt{Profit = SP - CP}}[/tex]

⟶ [tex] \large{ \tt{1.105x - x}}[/tex]

⟶ [tex] \large{ \tt{0.105x}}[/tex]

♨ [tex] \large{ \tt{P\% = \frac{Profit}{CP} \times 100 \%}}[/tex]

⤑ [tex] \large{ \tt{ \frac{0.105x}{x} \times 100\%}}[/tex]

⤑ [tex] \boxed{ \large{ \purple{\tt{10.5\%}}}}[/tex]

Hence , Profit % = 10.5 %

♕ Hope I helped ! ♡

☄ Have a wonderful day / night ! ♫

✎ [tex] \underbrace{ \overbrace{ \mathfrak{Carry \: On \: Learning}}}[/tex]

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

Can anyone help solve these questions

Answers

Answer: see the image man

Step-by-step explanation: I Have tried my best to solve it .  Hope it helps .

Item 2
Mia has $7 worth of quarters.

How many quarters does Mia have?


4 quarters

7 quarters

14 quarters

28 quarters

Answers

28 Quarters 7 times 4 = 28 Quarters

Volume of a hexagonal prism with a base side length of 2 inches and a height of 8 inches, the prism is regular. Also it would be a big help if you could calculate the lateral area and the total area. Thanks so much

Answers

Answer:

V≈83.14

AL=96

Surface A≈116.78

Base A≈10.39

Step-by-step explanation:

Step-by-step explanation:

base area of hexagonal prism =

6× ½×(2)(2)× sin 60° (regular prism)

= 12×½√3 = 6√3 sq. inches

Volume = base are x height

= 6√3 x 8 = 48√3 cu. inches

or 83.14 cu. inches

the lateral area = 6 × (2×8) = 96 sq. inches

total area = 2×(6√3) + 96

= (123 + 96) sq. inches

or 116.78 sq. inches

Write the slope-intercept form of the equation of each line given the slope and y-intercept.

Slope= -10/3, y- intercept=5

Answers

The answer to this question is y= -10/3x+5

Answer:

y = -10/3x + 5

Step-by-step explanation:

Hi there!

We are given that a line has a slope of -10/3, and a y intercept of 5

We want to write the equation of this same line in slope-intercept form, which is y=mx+b, where m is the slope and b is the y intercept

As we are already given the slope and y intercept, we can simply substitute these values into the format for slope-intercept form to find the equation of the line!

Starting with the slope, substitute -10/3 as m in y=mx+b

y = -10/3x + b

Now for the y intercept, substitute 5 as b in the equation

y = -10/3x + 5

Hope this helps!

See more on this topic here: https://brainly.com/question/17788099

I don’t understand it please help

Answers

Answer:

Simple! Just plug in each x value into the equation above. Or, you could just plug the equation into a graphing calculator and find the point from there.

Step-by-step explanation:

f(3) = 16

f(4) = 21

f(5) = 26

f(8) = 41

Please do mark as brainliest. Hope this helps! :)

1. In each case, which average do you think is most useful: the mean, median, or mode?
Justify your answer.

Answers

Answer:

depends on the cases. they all have different uses

 Please answer correctly !!!!Will mark Brianliest !!!!!!!!!!!!!!

Answers

Answer:

Hello! Your answer would be, C)

Step-by-step explanation:

Hope I helped! Ask me anything if you have more questions! Have a nice mourning! Brainiest plz! Hope you make an 100%! -Amelia♥

Jeanie sells M&Ms out of her giant bag at 4 for 5 cents. The machine at the store sells you 9 for 25 cents. which is the better deal for you?​

Answers

Answer:

drip

Step-by-step explanation:

Find the value of x and y. Identify the type of angle pair!!

Answers

Answer:

y = 3

x = 5

Step-by-step explanation:

40y + 20 = 60 y - 40 because opposite angles are equal

solve this equation

40y + 60 = 60 y

60 = 20 y

3 = y

8x = 2x +30

6x = 30

x = 5

Answer:

40y+20=60y-40

60y-40y=20+40

20y=60

y=60÷20

y=3

8x=2x+30

8x-2x=40

6x=30

x=30÷6

x=5

(40×3+20) = 140

8×5 = 40

(2×5+30)=40

(60×3-40)=140

brainlyesssssssss


Cho earns $50 every day that she works at her job. Let c represent the amount of money, in dollars, Cho earns for d days of work.QuestionCreate an equation to represent the relationship between the amount of money Cho earns and the number of days she works. Move numbers, variables, or symbols to the lines to create the equation.

Answers

Answer:

50 =c×d

Step-by-step explanation:

Answer: c= d x 50

Step-by-step explanation:

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