Are these correct? If not help me please??

Are These Correct? If Not Help Me Please??

Answers

Answer 1

Answer: no, no, yes, no, yes, yes

Step-by-step explanation:

x + 1, 2x, these are not equivalent

no

10x, 5(x+5)

5(x+5) distribute the 5 to get 5(x+5) = 5x + 25

5x + 25 is not equal to 10x, so no

no

1 + 2x = 2x + 1, these are equivalent since the constant and coefficients are the same

yes

2x, 2x - 5, these are not equivalent since once has a constant of -5 while the other does not

no

15x -1, 3(x+4x) - (3-2)

3(x+4x) - (3-2) combine like terms

3(5x) - (1) multiply through parentheses

= 15x -1

so 15x - 1 = 3(x+4x) - (3-2), these are equivalent

yes

1/2 * (4x-2),2x-1

1/2 * (4x-2) multiply through parentheses to get

2x - 1

so these two are equivalent

yes

Answer 2

The answer #2 is no and the number #5 is yes.

#2 is no, as you cannot add or subtract if they are not similar. Since in the second part the answer is 5x + 25.

#5 is yes because when there is a subtraction in front of a parenthesis, expressions within the parenthesis must change their sign.


Related Questions

A circular puzzle is 20 inches in diameter. All of the pieces are about the same size. You want to know about how many pieces there are in the puzzle.

Answers

Final answer:

The problem discusses a circular puzzle of 20 inches in diameter. Without further information on the dimensions of the individual pieces, an exact number of pieces cannot be determined.

Explanation:

The subject of this question is Mathematics and it is relevant to a Middle School grade-level. It involves understanding the concept of a circular puzzle and its diameter. Although the information provided about the icosahedron, which is with 20 faces and 12 corners, is fascinating, it is not directly applicable to the question about the circular puzzle.  

To solve this problem, you need to consider the size of the typical puzzle piece. Since we don't have that information, we can't provide a precise number of pieces. For example, if each puzzle piece is 2 inches wide then there would be a different number of pieces than if each piece was 1 inch wide.

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my math is horrible, please help me understand to solve
4/5 of 35=

Answers

Answer:

28

Step-by-step explanation:

divide 35 by 5 and multiply the product by 4

35 ÷ 5 = 7

7 × 4 = 28

what addition does the model below represent?

Answers

Answer:

It's the 5+(-3)

Step-by-step explanation:


What are three numbers that have a sum of 44 if the greatest number is 11 more than the least
a. 1, 15, 12
b. 9, 14, 20
c. 8, 17, 19
d. 11, 16, 22​

Answers

for process of elimination purposes, which is helpful, only one of these add up to 44, which is the answer C. 19-8=11, which is the difference between the least and greatest number.

solve the rato table 16:28=4:_​

Answers

Answer:

x =7

Step-by-step explanation:

16:28=4:x

16*x=28*4

x=28*4/16

x=112/16

x=7

Answer:

7

Step-by-step explanation:

16/4=4 28/4=7

Find the equation of the line specified.
The slope is 7, and it passes through ( 8, 6).

Answers

Answer:

The answer is A

Step-by-step explanation:

Given that the equation of line is y = mx + c and the slope is 7 :

y = 7x + c

By substituting the coordinate(8,6) into the equation, in order to find the value of c:

6 = 7(8) + c

6 = 56 + c

c = 6 - 56

= -50

y = 7x - 50

(Hope this can help)

Which of the following has no effect on the monthly payment?

Answers

where are the answer choices?

Answer: Vehicle's color

Step-by-step explanation: took the quiz.

PLEASE ANSWER ASAP!!!
Prove the divisibility of the following numbers: 5^5−5^4+5^3 by 7

Answers

Answer:

Step-by-step explanation:

[tex]5^5-5^4+5^3 \: \: \:by \:\:\:\:7\\common factor\\\\\frac{5^5-5^4+5^3}{7}\\\\\frac{5^3(5^2-5+1)}{7}\\\\\frac{5^3(5^2-4)}{7}\\\\\frac{5^3(25-4)}{7}\\\\\frac{5^3(21)}{7}\\ \\Simplify\\\\5^3(3)\\[/tex]

i have 5 minss helppppp!!!!!

Answers

Answer:that's it

Step-by-step explanation:

Answer:

totalCost = 150 + 12x

$210

-3.25x + 4.1

40x-24y

4(x+5)

6(x+9)

Step-by-step explanation:

let x = day

foodCost = 100 + 5x

gameCost = 50+ 7x

totalCost = 100 + 50 + 7x + 5x

totalCost = 150 + 12x

5 days

150 +12(5) = 150 + 60 = 210

75x+6 -2.5x-1.9

-3.25x + 4.1

Henry divided his socks into five equal groups. Let s represent the total number of socks. Which expression and solution represent the number of socks in each group if s = 20?

Answers

Answer:

20/5=number in each group. It can also be S/5

Step-by-step explanation:

Answer:

I think its A

Step-by-step explanation:

sorry if im wrong but hope this helps :)

Ratios that are equivalent to 8 : 20

Answers

Answer: 16 and 40.  24 60

Step-by-step explanation:

What is the P(H,H,H,T,T) on 5 flips of a coin?

I need help

Answers

Answer:

The probability for Heads will be 60% or 3/5.

The probability for Tails will be 40% or 2/5.

Step-by-step explanation:

The coin flipped 5 times and landed on Heads 3 times. This shows that out of 5 situations, 3 situations were Heads. Therefore, the  probability is 3/5.

The coin landed on Tails 2/5 times the coin was flipped, which is basically the probability.

Final answer:

The probability of getting 3 heads and 2 tails in 5 flips of a coin, in any order, is 0.3125 or 31.25%. This is calculated by figuring out the number of ways to get 3 heads and 2 tails out of 5 flips (10 ways) and dividing that by the total possible outcomes in 5 flips (32 outcomes).

Explanation:

The question is asking about the probability of getting three heads and two tails in 5 flips of a fair coin. The order given in the question (H, H, H, T, T) doesn't matter in this case because the flips are independent events.

We calculate the probability by figuring out the number of ways we could get 3 heads and 2 tails out of 5 flips and divide that by the total number of outcomes in 5 flips of a coin. There are 10 ways to get 3 heads and 2 tails out of 5 flips, and there are 32 total possible outcomes in 5 flips of a coin (because 2^5 = 32, as each flip has 2 possibilities, heads or tails).

So, P(H, H, H, T, T) = 10 / 32 = 0.3125 or 31.25%

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factor completely (x^2-4)(x^2+6x+9)

Answers

Answer:

[tex](x-2)(x+2)\left(x+3\right)^2[/tex]  is the required factor form.

Step-by-step explanation:

When the factor of the expression is required to be found, then take the common terms, or find the factor by splitting the terms, or by using the standard formulas.

So here we have to find the factor of the expression:

[tex](x^2-4)(x^2+6x+9)\\[/tex]

so we will first find the factors of:

[tex](x^2-4)=(x-2)(x+2)~~~~~~~~~~~~~~~~~\because x^2-y^2=\left(x+y\right)\left(x-y\right)\\[/tex]

Now the factors of:

[tex](x^2+6x+9)=\left(x+3\right)^2~~~~~~~~~\because \left(a+b\right)^2=a^2+2ab+b^2[/tex]

So the final factor is given as:

[tex](x^2-4)(x^2+6x+9)\\=(x-2)(x+2)\left(x+3\right)^2[/tex]

If T=[23 -38]
[17 -6 ]
then what is –10(T)?
PLEASE HELP

Answers

Answer:

B

Step-by-step explanation:

Multiply each term by -10

The matrix in Option B is the value of the given expression.

What is a matrix?

'In mathematics, a matrix is a rectangular array of numbers, symbols, or expressions, arranged in rows and columns.'

According to the given problem,

Given matrix = [tex]\left[\begin{array}{ccc}23&-38\\17&-6\\\end{array}\right] \left[/tex]

On multiplying -10 with this,

Matrix = [tex]\left[\begin{array}{ccc}(23*(-10))&(-38*(-10))\\(17*(-10))&(-6*(-10))\\\end{array}\right][/tex]

          = [tex]\left[\begin{array}{ccc}-230&380\\-170&60\\\end{array}\right][/tex]

Hence, we can conclude the matrix  [tex]\left[\begin{array}{ccc}-230&380\\-170&60\\\end{array}\right][/tex]  after multiplying -10 to    [tex]\left[\begin{array}{ccc}23&-38\\17&-6\\\end{array}\right] \left[/tex].

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Andre rents beach chairs and umbrellas to tourists visiting the beach. On one Saturday, he has 150 customers. If he rents 125 chairs and 72 people rent both chairs and umbrellas, how many people rent umbrellas?

A. 25
B. 72
C. 97
D. 125

Answers

Answer:

25

Step-by-step explanation:

First: 125+72-150 is 47

Chairs: 125-47 is 78 chairs

Umbrellas: 72-47 is 25 umbrellas

Hence, there is 25 people rented umbrellas

Hope this helps!!!

Have a nice day:)

Final answer:

By applying the principle of inclusion-exclusion, we determined that the number of people who rent umbrellas is 97, after accounting for the overlap of customers who rent both chairs and umbrellas.

Explanation:

To solve this combinatorial problem, we can employ the principle of inclusion-exclusion. The principle is a way to count the number of elements of each collection, subtracting the overlaps (in this case, people who rent both chairs and umbrellas), and adding the elements that are in neither category if necessary.

Let's define the following terms:


 C - the number of customers who rent chairs
 U - the number of customers who rent umbrellas
 B - the number of customers who rent both chairs and umbrellas

According to the question:

C = 125 (chairs)

B = 72 (both chairs and umbrellas)

The total number of customers, T, is given by:

T = C + U - B

Since the total number of customers is 150, we have:

150 = 125 + U - 72

To find U (the number of people renting umbrellas), we just need to solve for U:

U = 150 - 125 + 72

U = 25 + 72

U = 97

Therefore, the number of people who rent umbrellas is 97.

How do you solve 3 over 4 •-3 -2.5

Answers

Answer:

(¾ * -3) -2.5

equals (-9/4) -2.5

equals -4.75

Step-by-step explanation:

What is the value of y for the linear equation,
x + x = 2x - 4y +16

Answers

Isolate the variable by dividing each side by factors that do not contain the variable.
2x=2x-4y+16
2x-16=2x-4y
-4y would have to equal -16
Therefore Y=4
x+x=2x-4y+16
2x=2x-4y+16
-16 -16
2x-16=2x-4y
-2x -2x
-16=-4y
/-4 /-4
4=y


y=4.

[tex]2a x 7b^{2}[/tex]

Answers

If that 'x' signifies multiplication, then,

[tex]2a * 7b^2 = (2*7)ab^2 = 14ab^2[/tex]

So,

[tex]2a*7b^2[/tex] simplifies to [tex]14ab^2[/tex]

14ab to the 2nd power

The largest possible circle is cut out of a square whose side length is 8 feet. What will be the approximate area, in square feet, of the remaining board? ( where

Answers

Answer:

13.76ft²

Step-by-step explanation:

Side of square: d=8ft

Area of board: Sb=d×d=64ft²

Area of circle: Sc=pi×r²=pi×(d/2)²=pi×d²/4=pi×64/4= 16×pi=50.24ft²

Remainin area: Sb-Sc=64-50.24=13.76ft²

Answer:

Area of remaining board is 13.728 feet²

Step-by-step explanation:

Given; Square side length = 8 feet

Therefore, the diameter of the cut out circle = 8 feet, then Radius = 4 feet

The approximate area, in square feet, of the remaining board will be the are of the square minus the ares of the cut out circle.

Area of the square =  S²

                                = (8 feet)²

                                = 64 feet²

Area of the cut circle = π(4 feet)²

                                   = 3.142 x 16 feet²

                                   = 50.272 feet²

Area of remaining board = Area of the square - Area of the cut circle

Area of remaining board = 64 feet² - 50.272 feet²

Area of remaining board = 13.728 feet²

12x + 34y = -2
2x + 3y = -8
What is x?

Answers

The answer is X,Y = 113/16; 23/8

Factor the expression completely. 9x+6

Answers

Answer:

3(3x+2)

Step-by-step explanation:

Answer:

3(3x+2)

Step-by-step explanation:

take out LCF of 3

Peter has 51 fruit chews to share with Josh and Jenny. The number of fruit chews Peter gives to Josh is 9 less than four times the number of fruit chews he gives to Jenny. If Peter has no fruit chews left over, how many fruit chews does Peter give to Jenny?

Answers

Model this into an equation.
4J-9+J=51
5J=60
J=12
He gives Jenny 12 fruit chews.

I need help please plot it

Answers

Here is answered. I plotted the numbers that you asked for.

Which store is offering the best deal
A.8 for $6
B.10 for $10
C.2 for $3
D¢0.8 each
And why

Answers

Answer:

?

Step-by-step explanation:

0.8 beacuse in the long run that will be cheaper

3) A chef randomly chooses subscription information from his blog readers to determine people who are likely to watch his new cooking show. Which statement BEST describes the random sample? A) The random sample represents all people who visit cooking blogs. B) The random sample represents all people who are interested in cooking shows. C) The random sample represents all people who are likely to watch the chef's new cooking show. Eliminate D) The random sample does not represent all people who are likely to watch the chef's cooking show.

Answers

Answer:

The answer is D, the random sample does not represent all people who are likely to watch the chef's cooking show.

Step-by-step explanation:

This is because not all people who enjoy cooking know about or visit the chef's blog.

Answer:ok guys so the answer is D

Step-by-step explanation: Not all people who enjoy cooking know about or visit the chefs blog

What is y +4= -6(2 + 6) written in standard form?

Answers

Answer:

y = -52

Step-by-step explanation:

Step 1:  Convert to Standard Form

y + 4 = -6(2 + 6)

y + 4 = -12 - 36

y + 4 - 4 = -48 - 4

y = -52

Answer: y = -52

Y = -52 hope this helps

Ona piece of paper usa protracter to construct right trangle ABC with AB = 4in. , m∠A90°, and m∠B= 45°
What statement is true about the triangle?

AC = 2 in.

BC = 8 in.

AC = 4 in.

BC = 4 in.

Answers

Answer:

AC = 4 in.

Step-by-step explanation:

Since m∠A = 90° and m∠B = 45°, you know that m∠C = 45° ( because you can tell it's an isosceles right triangle ).

This means that legs AB and AC both have to be congruent.

If leg AB is 4 in, then leg AC is 4 in.

Find x, the missing side length of the right triangle. can anybody help

Answers

Answer:

16.64 units

Step-by-step explanation:

Use Pythagorean Theorem:

a^2+b^2=c^2

14^2+9^2=x^2

196+81=x^2

277=x^2

16.64=x

So the length is about 16.64 units

solve for x 2(x+7)-3(2x+4)= -18

Answers

Answer:

x = 5

Step-by-step explanation:

Given

2(x + 7) - 3(2x + 4) = - 18 ← distribute both parenthesis

2x + 14 - 6x - 12 = - 18, that is

- 4x + 2 = - 18 ( subtract 2 from both sides )

- 4x = - 20 ( divide both sides by - 4 )

x = 5

The original equation 2(x+7) - 3(2x+4) = -18 simplifies to -4x = -20, which leads to the solution x = 5. This is confirmed by substituting x back into the original equation, resulting in an identity (-18 = -18).

The equation to solve is 2(x+7) - 3(2x+4) = -18. To solve for x, we first expand the equation:

2x + 14 - 6x - 12 = -18

Combining like terms, we get:

-4x + 2 = -18

Subtracting 2 from both sides gives us:

-4x = -20

Dividing both sides by -4, we find that x = 5.

To verify the solution, plug x back into the original equation:

2(5+7) - 3(2*5+4) = -18

Which simplifies to:

24 - 30 = -18

This confirms that the solution x = 5 is correct as it results in an identity after substitution.

monk crossbred​ plants, which can have purple or white​ flowers, and obtained 639 plants with white flowers and 280 plants with purple flowers. Find the empirical probability that a plant had each type of flower.
11.1#18

Answers

Answer:

The emperical probability of being a plant with white flower is

[tex]\dfrac{639}{919}\approx 0.695[/tex]

The emperical probability of being a plant with purple flower is

[tex]\dfrac{280}{919}\approx 0.305[/tex]

Step-by-step explanation:

There are

639 plants with white flowers 280 plants with purple flowers919 plants in total.

The empirical probability of an event is the ratio of the number of outcomes in which a specified event occurs to the total number of trials, not in a theoretical sample space but in an actual experiment.

The emperical probability of being a plant with white flower is

[tex]\dfrac{639}{919}\approx 0.695[/tex]

The emperical probability of being a plant with purple flower is

[tex]\dfrac{280}{919}\approx 0.305[/tex]

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Explain why values A = 0.06 and B = 0.04 are a good choice toapproximate this behaviour.(c) Using A = 0.06 and B = 0.04, find the particular solution y(t) assuming that thesize of the economy of Lemon Island before the transformation is $50 000 000, andthat the transformation causes the size of the economy to shrink by $10 000 000 att = 0.(d) The size of the economy of Lemon Island without the transformation can be mod-eled using the same equation with parameters A = 0.02 and B = 0.In which year after the transformation will the size of the transformed economysurpass the size of the economy without the transformation?(e) Elections on Lemon Island are in five years time. The Lemon Island Polling In-stitute (LIPI) predicts that the current government will only be re-elected, if thegrowth rate of the economy is, by then, at least 4%. According to the first model,can the current government expect to be re-elected? if y varies directly as x, find the constant of variation if y= 32 when x= 8 An electromagnet is a with acore. what is the density of a substance that has a mass of 2.0 g, and when placed in a graduated cylinder the volume rose from 70 mL to 75 mL What is the central idea of a text? The method of changing one or more chemical compounds Which word is part of an infinitive?A. Images B. DreamtC. KeepD. Losing Butcher Company plans to issue bonds to raise $10 million to finance expansion. It could use 10-year mortgage bonds backed by the firm's fixed assets, 10-year debentures that are not backed by any specific assets but are backed by the firm's general earning power, or 10-year subordinated debentures that would be subordinated to all of the firm's other debt. If it uses mortgage bonds, they would be rated A by Moody's and S&P, and their market interest rate would be 7.5%. Given this information, which of the following statements is most correct? (A) The subordinated debentures would be rated highest, probably AA. (B) Given the 7.5% interest rate on the mortgage bonds, the subordinated debentures might carry an interest rate of 8.0% and the plain debentures a rate of 8.5%.(C) Since bond ratings are highly subjective, information about the rating and interest rate on the A-rated bond tells us nothing about how the two types of debentures would be rated, or about their likely interest rates.(D) The debentures would be rated highest, probably AA.(E) Given the 7.5% interest rate on the mortgage bonds, the plain debentures might carry an interest rate of 8.0% and the subordinated debentures a rate of 8.5%.