Mathematics Middle School

Solve the following equations:
1.3(3x+4)-5=-2
2.1=5(x-4)-2x
3.-5(2x+6)9x=-32

Answers

Answer 1
1. -1
2. 7
3. 1/45( if the 9x is multiplied?)
Answer 2
1. -1
2. 7
3. 1/45 sorry if wrong :)

Related Questions

1
what decimal is equal to 2---
2
A. 1.12
B. 1.5
c. 2.12
D. 2.25
E. 2.5​

Answers

E- 2.5
remember .5 means half
E - 2.5 yeah ok rawr

I am having a brain fart right now. Can somebody help me solve this system by substitution?

Answers

the answer is 9

Step-by-step explanation:

u see y equals 8 so u put y in the place of x so then eight plus 1 equal nine

Tina is packing for a five-day trip. She has one blue, one red, one white, one green, and one grey t-shirt. Tina will not wear each t-shirt more than once. What is the probability that Tina will wear blue on the first day of her trip and then wear grey on the second day of her trip?

2/5


1/5


1/20


1/25

Answers

the answer is 1/5 because there’s 5 shirts but a 20% change which is also 1/5 she’ll pick the blue one.

The probability of Tina wearing blue on the first day of her trip and then wearing grey on the second day of her trip is 1/20.

What is Probability?

It is a branch of mathematics that deals with the occurrence of a random event.

The probability of Tina wearing blue on the first day of her trip is 1/5, since she has 5 t-shirts to choose from and only one of them is blue.

After wearing the blue t-shirt on the first day, Tina will have 4 t-shirts left to choose from for the second day. Only one of those t-shirts is grey, so the probability of Tina wearing grey on the second day given that she wore blue on the first day is 1/4.

The probability of both events happening (Tina wearing blue on the first day and then grey on the second day) is the product of the individual probabilities:

P(blue on first day and grey on second day) = P(blue on first day) x P(grey on second day | blue on first day)

P(blue on first day and grey on second day) = (1/5) x (1/4)

P(blue on first day and grey on second day) = 1/20

Therefore, the probability of Tina wearing blue on the first day of her trip and then wearing grey on the second day of her trip is 1/20. So, the correct option is 1/20.

To learn more on probability click:

https://brainly.com/question/11234923

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What is the median of the data set? 32, 37, 38, 40, 50, 52, 55, 57 A. 40 B. 23 C. 45 D. 57

Answers

Answer:

45**********************

The answer is 45 hope this helped

What is the measure of angle K in degrees?

Answers

The measure is 30° degrees

Answer:

74.5

Step-by-step explanation:

the angle sum of a triangle is equal to 180. With that, we now add 32.5 and 73 which gives me 105.5. Now we subtract 180-105.5= 74.5 degrees.

Find the area of the figure.

Answers

Answer:

l×w

Step-by-step explanation:

The triangle has many corners in your case, so length and width will get you the area of the shape

3x + 2 > 29 is x > 9 right? or is it x > 27? please help

Answers

Answer:

C

Step-by-step explanation:

i hopes this help i think its 6

Helllp i give brainliest

Answers

Answer:

50 is the right answer

Step-by-step explanation:

please mark me as brainliest answer

Answer:

30

Step-by-step explanation:

IQR is the difference between the upper and lower quartile

Upper Quartile is 60

Lower Quartile is between 20 and 40 so = 30

60 - 30 = 30

Please add an explanation too, I'm still figuring out how to solve stuff like this

Answers

Answer:

Step-by-step explanation: I don’t know the answer but if you don’t know what the median and mean is I’ll tell you.

Mean: is the average of the numbers.

Median: The middle number found by ordering all data points and picking out the one in the middle (or if there are two middle numbers, taking the mean of those two numbers). Example: The median of 4, 1, and 7 is 4 because when the numbers are put in order (1 , 4, 7) , the number 4 is in the middle.

4.259 x 10 ^-7 = ???

it needs to be in standard form

Answers

4.9 × 10 − 7 = 0.00000049

There are two red jars of marbles and one blue jar of marbles. Jars of a certain color have the same number of marbles in them. There are 37 marbles in total. The difference between the number of marbles in a red jar and the number of marbles in a blue jar is 8. Find the number of marbles in each type of jar.

Answers

Answer:

29

Step-by-step explanation:

first red jar = 15 marbles
second red jar = 15 marbles
blue jar = 7 marbles
total marbles = 15+15+7=37

PLEASE HELP - (I'll mark brainliest)

Answers

Answer: D

Step-by-step explanation: when finding absolute values, the sign is not taken into consideration. Therefore, 10 and -10 are the same

Phil and his family want to do something fun and memorable on Leap Day. They each come up with an activity: attend a trapeze class, go fishing, go on a hike, or visit a theme park. They settle on picking the letters L, E, A, and P from a bowl, replacing them after each pick, to make the decision. They repeat this experiment 40 times to verify their model and record the results in this table.
Below is the chart
Activity Letter Times Picked
trapeze class L
10
fishing E
11
hiking A
9
theme park P
10


Based on the results in the table, is this model a fair representation for choosing an activity?
A.
No, it is an unfair model because the outcomes have different frequencies.
B.
No, it is an unfair model because the relative frequency of the letter E is the highest.
C.
Yes, it is a fair model because the relative frequencies of the letters L and P are equal.
D.
Yes, it is a fair model because the relative frequencies of all the outcomes are similar.

Answers

Answer:

D. Yes, it is a fair model because the relative frequencies of all the outcomes are similar.

Step-by-step explanation:

Hope this helps!

The Answer to ur question is D

please please,please help

Answers

Answer:

yellow is correct

Step-by-step explanation:

HELP ME ASAP!!! WILL GIVE BRAINLIEST FOR CORRECT ANSWERS!!!!

Answers

Answer:

A, D

Step-by-step explanation:

Answer:

ok here i give answers am big brain

Step-by-step explanation:

4-A

5-C

1-D

2-C

3- A

SHOW YOUR WORK!!!!!!!!!!!!!!!!!!!!
The phone case you want to buy is marked down 30%, and you have a 25% off coupon. You pay $42.00. Can this equation be used to find the original price of the phone case? If so, what is the original price of the item? Explain. (5 points)
(0.7c) = 42

Answers

old. new
100%. 45%
x. 42
45x= 4200
x=$93.33

PLZZZZZ HELPPPPPPPP MEEEEEEE

Answers

Answer:the bottom is 24 and the left is -12

Step-by-step explanation:

Which friend had correct side lengths that could be used to create a right triangle?

Answers

The friend that has the correct side lengths is

Friend 2

Answer:

Friend 2 is correct.

Step-by-step explanation:

This morning, Megan and her dad had smoothies for breakfast. Megan made her smoothie with 1 cup of mango and 3 cups of strawberries. Her dad made a giant smoothie with 2 cups of mango and 6 cups of strawberries. Did the smoothies have the same ratio of mango to strawberries?

If correct I will give brainliest

Answers

Megan’s and her dad’s smoothies have the same ratio mango to strawberry

The smoothies have the ratio of mango to strawberries will be the same.

What are ratio and proportion?

A ratio is a group of sequentially ordered numbers a and b expressed as a/b, where b is never equal to zero. When two objects are equal, a statement is said to be proportional.

This morning, Megan and her dad had smoothies for breakfast. Megan made her smoothie with 1 cup of mango and 3 cups of strawberries.

Then the ratio is given as,

⇒ 1 / 3

Her dad made a giant smoothie with 2 cups of mango and 6 cups of strawberries.

Then the ratio is given as,

⇒ 2 / 6

⇒ 1 / 3

The smoothies have the ratio of mango to strawberries will be the same.

More about the ratio and the proportion link is given below.

https://brainly.com/question/14335762

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What is the value of the expression below? Negative 8 + 19 + 8

Answers

Answer:

The answer would be '19'

Step-by-step explanation:

Since, -8+8= 0, which would leave the remainder of 19.

help pls what is c/6=9

Answers

C=54 Hope this helps!
C/6=9

54

How?

Multiply both sides of the equation by 6
6•C/6= 6•9

Simplify both sides of the equation.
Cancel the common factor

C= 6•9

Multiple:

54

PLEASE HELP
If a, b, c, d are positive, and if a b < c d , then which statement is ALWAYS true?
A) ab < cd.
B) da < bc.
C) bc < ad.
D) cd < ab.

Answers

Answer:

The answer is A, ab<cd.

Step-by-step explanation:

If a, b, c, d are positive, and if a b < c d , then Ab>cd is always true

Are the triangles below acute, obtuse, or right?

Answers

Acute, Optus, right, Optus

A scientist looks at a cell through a microscope. The actual diameter of the cell is 2.5 x 10*-5 meters. What is the diameter of the image of the cell if it id magnified 400 times? PLS HELP. NEED IT QUICKLY TY

Answers

Answer:

use a calculator

Step-by-step explanation:

Help please :/
Our teacher wants us to solve a puzzle, but I have no idea what's going on

Answers

Answer:

Oh, I done this before

Step-by-step explanation:

you have to find the least valur and put it to least to greatest!

MArk me brianliest!

please help due today

Answers

Answer:

The ANSWER is OPTION B

Step-by-step explanation:

It is the answer to the question

3.
Three cylinders have a volume of 2826 cm. Cylinder A has a height of 900 cm. Cylinder B has a
height of 225 cm. Cylinder C has a height of 100 cm. Find the radius of each cylinder. Use 3.14 as an
approximation for y
How do I do the approximation part?

Answers

Answer:

A = 1   B = 2   C = 3

Step-by-step explanation

please please help i need to find the area

Answers

For L I think it’s 12.5.

If a, b, c, d are positive, and if a b < c d , then which statement is ALWAYS true?
A) ab < cd.
B) da < bc.
C) bc < ad.
D) cd < ab.

You can get Brainliest if you answer first!

Answers

Answer:

A

Step-by-step explanation:

If you answer these questions correctly with an explanation you can get Brainliest

Answers

1. B 2. A i’m pretty sure they are right
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