Mathematics High School

Complete the solution of the equation. Find the
value of y when x equals -30.
-2x – 3y = 42

Answers

Answer 1
-2(-30)-3y =42
60-3y=42
-3y=42-60
-3y= -18
y= 6
Answer 2

The value of y when -2(-30) - 3y = 42 is that y will be 6 so therefor the answer is y = 6

Related Questions

Classify the quadrilateral then find the values of the variable (s) PLS HELPPP

Answers

Answer:

x = 58°, y = 32°

Step-by-step explanation:

all sides are equal, hence it is a rhombus.

in a rhombus, diagonals meet at 90degree..

hence in triangle,

58 + 90 + z = 180 (asp of a triangle.)

z = 32

y = z ( alternate interior angles as lines are parallel in rhombus)

y = 32

in the bigger triangle,

angles opposite to equal sides are equal, hence,

32 + 32 + (58 + x) = 180 ( angle sum property of a triangle,)

hence, x = 58

therefore,

x = 58°, y = 32°

9,-81, 729,-6561...
What is the common ratio?
Help which is the correct answer?

Answers

Answer:

[tex]r = -9[/tex]

Step-by-step explanation:

Given

[tex]Sequence: 9,-81, 729,-6561...[/tex]

Required

Determine the common ratio

The common ratio r is calculated using:

[tex]r = \frac{T_n}{T_{n-1}}[/tex]

Let [tex]n = 2[/tex]

So, we have:

[tex]r = \frac{T_2}{T_{2-1}}[/tex]

[tex]r = \frac{T_2}{T_1}[/tex]

From the sequence:

[tex]T_2 = -81[/tex]

[tex]T_1=9[/tex]

So, the equation becomes

[tex]r = \frac{-81}{9}[/tex]

[tex]r = -9[/tex]

The average diameter of red blood cell is 0.000007m. Write this measurement in scientific notation.

Answers

Answer:

Step-by-step explanation:

7 x 10^-6 You're basically just moving the decimal place over six times until there is a whole number before the decimal.

5.25 divided by 3
Thank You.

Answers

Answer:

1.75

Step-by-step explanation:

1.75 :) you can check your answer by multiplying by 3!

Brainliest would be appreciated

Question 2
Find the slope given the points:
(0, -2) and (1,1)

Answers

Answer:

Step-by-step explanation:

Slope=(y-y)/(x-x)=3/1=3

Find the lateral area of the regular pyramid.

L. A. =

Answers

Answer:

I think 32 inches 2.

But I am not 100% sure.

Need help ASAP
Thanks+ BRAINLIST only for correct answers

Answers

i am 90% sure it is answer b

I'm sure it's scatter plot b

WILL MARK BRAINLIEST!

Given ΔABC : ΔDEF, find x.

10
14
27
12

Answers

Answer:

x=12

Step-by-step explanation:

If the triangles are similar:

x/8=18/12

x/8=1.5

x=12

Answer:

12.

Step-by-step explanation:

PPPLEEASSSEREE
Add. What is the sum (2 x 10") + (7 x 101 ) in scientific notation?

Answers

Answer:

Simplify the expression? Is it:   2 x 10 '' + 707 x   ....?

Twenty people attended a going away party for Zach.The guest left in groups of 2.By 9:00,x groups had left.Rewrite the number of guests remaining at 9:00 as a sum.

Answers

Answer:

The number of guests remaining at 9:00 is;

(20-2x)

Step-by-step explanation:

From the question, we are told that x groups have left

Since they are leaving in groups of 2, x groups means a total of x * 2 = 2x

So we have 2x left out of a total 20; the people remaining at the party will be;

20-2x

3. *
2 points
Jessica bought seven boxes. A week later
half of all her boxes were lost during a
move. There are now only 13 boxes left.
With how many did she start?

Answers

Answer:

19 boxes

Step-by-step explanation:

Which expression below is equivalent to -3x + 5(x+2)?a. 2x + 10
b. -8x + 10
c. 2x + 2
d. -x+2

Answers

The correct answer would be A. 2x + 10. :)

Explanation:
-3x + 5(x + 2)
-3x + 5x + 10
2x + 10


What is the common ratio of 9, 81, 729. -6561

Answers

Given:

Consider the given sequence is 9, 81, 729, 6561.

To find:

The common ratio.

Solution:

We have,

9, 81, 729, 6561

Here,

First term = 9

Second term = 81

Divide the second term by first term to get the common ratio.

[tex]r=\dfrac{81}{9}[/tex]

[tex]r=9[/tex]

Similarly,

[tex]\dfrac{81}{9}=\dfrac{729}{81}=\dfrac{6561}{729}=9=r[/tex]

Therefore, the common ratio is 9.

Jim said that the terms in an arithmetic sequence must always increase, because you must add the common difference to each term to get the next term. Is Jim correct? Justify your reasoning

Answers

Answer:

i need points

Step-by-step explanation:

please help me will mark brainliest

Answers

Answer:

What do you need help with

Step-by-step explanation:

4. The band at Jason's high school had a concert for charity. They raised $15000. Adult tickets were $5 each and student tickets were $3 each. The members of the band sold a total of 4000 tickets. Which of the following systems of equations can be used to determine how many adult, x, and student tickets, y. they sold? A. x + y = 4000 5x + 3y = 15000 C. x - y = 4000 5x - 3y = 15000 B. x + y = 15000 5x + 3y = 4000 D. 5x + 3y = 4000 3x + 5y = 15000 03 PO P MINE W 1 NY 19 C​

Answers

Answer:

A. x + y = 4000

   5x + 3y = 15000

Step-by-step explanation:

Total amount raised = $15000

cost of adult tickets = $5

cost of student tickets = $3

Total number of tickets sold = 4000

number of adult tickets sold = x

number of student tickets sold = y

Then we can say,

total number of ticket sold = number of adult tickets + number of student tickets

4000 = x + y

⇒ x + y = 4000 ............. 1

Also,

5x + 3y - 15000 ............. 2

the equations required are:

x + y = 4000

5x + 3y - 15000

Karen spent $17.59 on supplies that she is going to use to make jewelry. How much would she spend if her money was rounded to the nearest dollar? Remember, this is a money problem. Don't forget to use the proper symbols.

Answers

Answer:

$18.00

Step-by-step explanation:

Answer: 18$

Step-by-step explanation:

17.59 is the current amount if you round to the nearest dollar the .5 will make the 7 go up in value meaning it will turn into a 8


There is a bag with only red marbles and blue marbles.
The probability of randomly choosing a red marble is
6 over 7 as a fraction.
There are 30 red marbles in the bag and each is equally likely to be chosen.
Work out how many marbles in total there must be.

Answers

65 marbles...............

What is the perimeter of the regular heptagon below?

Answers

Answer:15.65

Step-by-step explanation:

- Question 11
Mrs. Pitoya has 30 apples and is buying more apples in crates containing 20 apples each. She needs 130 apples for a harvest celebration at her school,
Which equation and solution correctly represent x, the number of crates of apples Mrs. Pitoya needs to buy?

Answers

Answer:

Mrs pitoya has to buy 9 crates of apples

Answer: She only needs to buy 5 more crates of apples.

30 + 20(x) = 130

30-30+20(x)=130-30

20x = 100

x = 5

Step-by-step explanation:

What is the side length of a square with the area of 20cm2

Answers

Answer:

S = a² => 20 = a² => a = √20 ≈ 4.5 cm

Step-by-step explanation:

4.7x4.7x4.7 thats about it

Answers

Answer:

103.823

Step-by-step explanation:

It's just 4.7 to the third power, so I multiplied to get 103.823. :)

find the slope of the line y = 1/6x + 3/2

Answers

Answer: 1/6

Step-by-step explanation:

Slope is the m in y=mx+b

The slope is 1/6 (one sixth)

please help i’ll give brainlyist this is due in 10 minutes

Answers

Answer:

hi :)

Step-by-step explanation:

0 yrs is 350 or 500 im not sure but, and then 6 yrs is 1350 $

The ratio of men to women in a
community chorus is 4/5 There are 60
men in the chorus. How many women are
in the chorus?

Answers

Answer:

125 women

Step-by-step explanation:

Answer: 75 women

Step-by-step explanation:

4/5

60/4=15

15x5= 75


Expand and simplify (x + 5)(x + 4)
​

Answers

Answer:

(x+5)⋅(x+4)= x2+9x+20

Step-by-step explanation:

(x+5)(x+4)

=x

2

+4x+5x+20=

=x

2

+9x+20

Step-by-step explanation:

(x+5)(x+4)

x(x+4)+5(x+4)

x(x+4)+5(x+4)

x2 +4x+5(x+4)

x2+4x+5(x+4)

x2+4x+5x+20

x2+4x+5x+20

x2+9x+20

solution

x2+9x+20

Find the median of the data in the box plot
below.
cookies
Number of cookies eaten
by each contestant
H
HHH
HHHH
2 4 6 8 10 12 14 16 18 20 22 24 26 2830

Answers

Please show a picture so I can help.

Answer:8

Step-by-step explanation:

Khan academy answer

[tex]\sqrt[47][134}[/tex]

Answers

1.10983 or 1.11 for short

Hellppppppp meeeee ASAP
First gets brainly

Answers

I'm not going to do all of them for you but I'm basically going to teach you what your teacher taught you.

In division with fractions, the second fraction will be flipped around and then you'll multiply normally.

Example:

(5/3)/(2/3)

You would flip around the 2/3 so it would be 3/2

Then you would multiply:

5/3*3/2

To do multiplication, multiply the top numerator by the top numerator and the bottom numerator by the bottom numerator as I'm sure you've already learned

5*3 = 15

3*2 = 6

15/6

Let me know if you have any questions

If you're wondering why I didn't give you the answer, it's because "Give a man a fish and he'll eat for a day; teach a man to fish and he will eat for a lifetime"

Thank you

5 divided by 7/8 as a fraction
Pls help 44 points

Answers

Answer:

5.714 (rounded to the nearest thousandth)

Step-by-step explanation:

Other Questions
2. Executive orders are subject to What type of wave is created here? A) longitudinal B) transverse Help me plssss!!! Option 1Aniyah could install a wind turbine on her property. This would cost her $48,000 to install but would save her about $20,000 per year in electricity costs.Stephen points out that a wind turbine would not pollute the air like the power plants do to make energy. He also notes that many times wind power plants make rent payments to the farmer or rancher for the use of the land, providing landowners with additional income.Option 2Aniyah could replace the irrigation pumps for her fields. This would cost her $24,000 to do but would save her about $6,000 per year in electricity costs.Stephen explains that about 25 percent of the electrical energy used for Aniyahs irrigation was being wasted due to poor pump and motor efficiency. By replacing these pumps, Aniyahs crops could be watered in a much more efficient fashion.Aniyah wants to save money, but she also wants to make sure that none of the changes she makes will affect the crops she produces and, in turn, the health of her customers. She contacts Siobhan, who is an expert in biotechnology, to help her understand what effects wind turbines or irrigation pumps might have on her crops.Siobhan looks over Aniyahs current farming output and after studying some soil samples from Aniyahs farm, finds that because Aniyahs irrigation pumps are not working properly, her soil has become eroded. The corn, soybean, and wheat produced do not contain as much potassium as they could if the soil was in better shape. She explains that Aniyahs customers would have healthier vegetables if she put in new irrigation pumps. Siobhan also estimates that Aniyahs fields would yield 10 percent more crops if the soil was healthier.On the other hand, Siobhan discusses how clean wind energy will make the air healthier for her cows and chickens to breathe. Even the grass that the livestock eat would be cleaner if it got its nutrients without absorbing bad gasses put out by the power plants. Healthier animals would cost Aniyah 13 percent less in vet costs. Siobhan says that because Aniyah has free range chickens, their eggs are already healthier than those farmed in traditional chicken houses. The use of wind power would be another way for Aniyah to show her customers that she wants to produce the healthiest dairy products she can for them.This is a lot of information for Aniyah to think about! Lets help her make her decision. Draw up a PowerPoint to present Aniyah with these two options. The PowerPoint should include the following content:A slide for each of Stephens options that contrasts how much each option will cost versus what Aniyah will saveon this slide, include how many years it will take for the amount Aniyah saves to equal the amount she has to invest for each optionOne slide that shows Aniyahs current profit and expenses using the profit charts aboveA slide that details the health benefits that Siobhan mentioned for each optionA final slide that considers all of the information and chooses either Option 1 or Option 2 as the best choice for Aniyahs farmIn addition, your presentation should include the following elements:Three or more picturesAt least one graph Problem 3 A sample of 2.37 moles of an ideal diatomic gas experiences a temperature increase of 65.2 K at constant volume. (a) Find the increase in internal energy if only translational and rotational motions are possible. 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A. the point in a story where the conflict is about to be solved by the characters B. an introduction to the main characters and setting in a story C. the highest or the most crucial point that decides the course of a story D. a series of related events building toward the highest point of tension in a story how many grams of NH3 can be prepared from 77.3 grams of N2 and 24.2 grams of H2? Pls help me it would mean a lot Need help asapWill mark you brainlist What was created to handle the financial needs and provide stability for the economy of the newly formed UnitedStates? How did the Transcontinental Railroad change life for people in the UnitedStates? 3^-2 3^-53^-73^-33^103^7 Factor the trinomial. 5y4 + 12y3 - 9y2 Hello everyone Please answer Let's solve a little logic : )What could be the answer?Have a nice day and thanks Why was Athens was the city-state to lead the golden age and not Sparta? Rob borrowed $2500 for 18 months and repaid $ 2950. What simple annual interest did he pay? Paul Aymes is a chrome plater at a local plant. If he plates 300 items or more,he is paid $1.25 each. For less than 300 items, he is paid $0.75 each. What ishis total pay if he plates 321 items on Wednesday and 154 items on Thursday?