math help pls!! will reward : )

Math Help Pls!! Will Reward : )
Math Help Pls!! Will Reward : )

Answers

Answer 1

Good evening ,

______

Answer:

A. x=all real numbers.

D. x = [tex]\frac{2-np}{2}[/tex]

___________________

Step-by-step explanation:

25-5x=5(-x+5)

25-5x=-5x+25

25-5x=25-5x

Then this equation is valid for all real number x

Note : If you replace x by any number you will get 0 = 0 and that always true.

:)

Answer 2

Answer:

a

Step-by-step explanation:


Related Questions

Which expression is equivalent to (f g) (5)?
f (5) times g (5)
f (5) + g (5)
5 f (5)
5 g (5)

Answers

Answer:

Option A.

Step-by-step explanation:

Expression given in the question is (f g)(5).

We know when two functions are f(x) and g(x) then (f g)(x) represents the multiplication of two functions.

(f g)(x) = f(x).[g(x)]

For x = 5

(f g)(5) = f(5).g(x)

It may be represented by the operation as

(f g)(5) = f(5) × g(x)

Therefore, option A. will be the answer.

The function (f g)(5) can be expressed as f(5) × g(5) as an equivalent expression.

Equivalent expression to (f g)(5)

The equivalent expression is determined as follows;

Two given functions such as  (f(5) and g (5), can be represented by the multiplication of the two functions as shown below.

(f g) (5) = (f (5) x g (5)

(f g) (5) = (f (5) x g (5)

Thus, the function (f g)(5) can be expressed as f(5) × g(5) as an equivalent expression.

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I need help with this

$5.40+$8.70+$6.30


plz help this is fifth grade math and it is using compensations and it is hard​

Answers

So, let’s pretend those 0’s at the end and the $’s are gone. That’s 5.4+8.7+6.3 .
Then, pretend there isn’t a . there. 54+87+63
Split them up by 10’s and 1’s
5+8+6=19
And
4+7+3=14
Now, we put the decimal back in. (That’s what the . is when there are numbers to the left of it.)
19+1.4=19+1+0.4
19+1=20
20+0.4=20.4
Then, put the 0 and $ back where they were before. $20.40 is your answer!

After solving the given mathematical expression which is $5.40 + $8.70 + $6.30 , we get value equal to $20.40

What is addition ?

The process of adding two or more numbers together or combining things into one group is known as addition.

The given arithmetic expression is $5.40+$8.70+$6.30.

Let's solve the given mathematical expression.

To add decimal numbers , place the decimal point in line with the specified decimal points, align the decimal numbers in accordance with their place values. If we look at the given decimals, we can see that they are like decimals because they have two digits after the decimal point. Therefore, we will arrange them in the proper sequence and perform standard addition rule.

i.e.,

5.40 + 8.70 + 6.30

We can write this as sum of :

= (5+8+6) + (0.40 + 0.70 + 0.30)

Now , solving to get the value :

= (19) + (1.40)

= $20.40

Therefore, after solving the given mathematical expression which is $5.40 + $8.70 + $6.30 , we get value equal to $20.40

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Please help me idk this

Answers

Answer:

The anwser is 2.8000

Step-by-step explanation:

 You look at the tenth place its 8 :

   2.8151

Then you look to the right which is 1

is 1 more than 5 or less

1 < 5

8 stays the same but 1, 5, and 1 turn into zeros

 

Answer:

2.8151 rounded to the nearest tenth is 2.8, because tenths lie right after the decimal

I hope i helped :)

An art exhibition contains paintings, sculptures, and drawings. 1/4 of the works on display are sculptures, 2/5 are paintings, and the remainder are drawings. What fraction of the work on display are drawings?

Answers

Answer:

The fraction of the work that are drawings is [tex]\frac{7}{20}[/tex]

Step-by-step explanation:

we have that

100%=100/100=1

we know that

The sum of the fractions of the works must be equal to 1

Let

x -----> the fraction of the work that are drawings

so

[tex]1=\frac{1}{4}+\frac{2}{5}+x[/tex]

Solve for x

[tex]1=\frac{13}{20}+x[/tex]

Subtract 13/30 both sides

[tex]x=1-\frac{13}{20}[/tex]

[tex]x=\frac{7}{20}[/tex]

Below is a graph of the Murphys' annual expenses. If the Murphys' gross annual household income is $85,420, how much will they pay in federal taxes?
a. $3,559.17
b. $8,542.00
c. $20,500.80
d. $29,897.00​

Answers

[tex]\text{Hello there!}\\\\\text{We know that Murphy makes \$85,420}\\\\\text{However, we need to find how much he needs to pay in federal taxes}\\\\\text{Looking at the chart, you'll see that federal taxes is 24\%}\\\\\text{This means we have to multiply 85,420 by .24 to see how much he needs}\\\text{to pay}\\\\85420*.24=20500.8\\\\\boxed{\text{Answer: C). \$20500.8}}[/tex]

The amount paid as Federal tax by the Murphys' is  $20,500.80.

What is a pie chart?

A pie chart is a kind of graph that is plotted in circular form. It is often used to present information succinctly and for easy digestion by the target audience.

In order to obtain the amount of  money that the  Murphys' pay as federal tax;

Total or gross income of the  Murphys' = $85,420Percentage paid as federal tax = 24%

Hence;

Amount paid as federal tax = 24/100 ×  $85,420 =  $20,500.80

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Sara is cutting bows out of ribbon which
will be used to wrap gifts. If Sara needs 1/4 of
a foot of ribbon to make a bow, and she has
5 feet of ribbon, then how many bows can
Sara make?

Answers

She can make at least 1 because if u multiple 1/4 and 5 it will give u a decimal as 1.25 or 5/4, or 1
She can make AT LEAST 1





beth and her brother went to the arcade. it cost 75 cents to play 3 games. they played 21 games in all. how much money did they spend?

Answers

it cost beth and her brother 147 coins. 3/21=7; 7x75=147

Answer:

$5.25

Step-by-step explanation:

if it cost 75 cents to play 3 games, that means it cost 25 cents per game. Multiply 21 games by 25 cents per game and you get 525, or $5.25.

What is the distance between 178 and 313 on a number line some one help me​

Answers

The answer for this is 135
Answer:

The distance between 178 and 313 on a number line is:  135

Step-by-step explanation:

We know that the distance between two points a and b on a number line is equal to the absolute difference between the two numbers.

i.e. Distance between two numbers = |a-b|

Here we have:

a= 178

and b=313

This means that:

|a-b|=|178-313|=|-135|=135

The midpoint of GH is M(3, 0). One endpoint is G(1, 0). Find the coordinates of the other endpoint H.

Answers

[tex]\bf ~~~~~~~~~~~~\textit{middle point of 2 points } \\\\ G(\stackrel{x_1}{1}~,~\stackrel{y_1}{0})\qquad H(\stackrel{x_2}{x}~,~\stackrel{y_2}{y}) \qquad \left(\cfrac{ x_2 + x_1}{2}~~~ ,~~~ \cfrac{ y_2 + y_1}{2} \right) \\\\\\ \left( \cfrac{x+1}{2}~~,~~\cfrac{y+0}{2} \right)~~=~~\stackrel{\stackrel{Midpoint}{M}}{(3~,~0)}\implies \begin{cases} \cfrac{x+1}{2}=3\\[1em] x+1=6\\ \boxed{x=5}\\ \cline{1-1} \cfrac{y+0}{2}=0\\[1em] \boxed{y=0} \end{cases}[/tex]

d) Calculate the area of a circle with a circumference of 31.4 in.

Answers

Answer:

A ≈ 78.54

Step-by-step explanation:

Area of a circle is A=πr^2

Since you do not know r (radius) you take the formula for the circumference of a circle (C=2πr), plug in 31.4 for C, and solve for r

Now that you have the radius of 4.99746521, you round it up to 5 and solve the area formula with 5 in as r.

answer:78.5

for explanation see the picture

complete 2x+21= using only the communtative property of addition​

Answers

Answer:

-9.5

Step-by-step explanation:

2x + 21 =

2x + 20 = 1 (C.P)

2x = 1-20

2x = - 19

x= - 19/2

x = - 9. 5

Figure 1 is congruent to Figure 2.
Figure 1
K 3.5 cm L
Figure 2
5 cm
T
4.5 cm
3 cm
2 cm
What is the length of NP?
A. 2 cm
B, 3 cm
C: 3.5 cm
D, 4.5 cm
E, 5 cm

Answers

Answer:

E.) 5 cm

Step-by-step explanation:

The shapes are congruent and are the same size,  side TU is the same as NP. If TU is 5, then NP is 5.

Answer:

E. 5 cm.

Step-by-step explanation:

As the 2 figures are congruent then corresponding sides are congruent.

NP corresponds to UT = 5 cm.

So NP is  5cm long.

(If we rotate  Figure 2 through 180 degrees anticlockwise we see that it fits exactly on to figure 1.)

use the digits 0-7 to create two 4 digit numbers whose sum is greater than 9999.​

Answers

Answer:

7,045 and 6,123. The sum is 13,168

Answer:

The numbers 7654 and 5463 meets the given conditions.      

Step-by-step explanation:

We are given the following information in the question:

We have to create two four digits number from the digits between 0 and 7 such that there sum is greater than 9999.

Let x and y be the four digits number, then x and y must satisfy the equation:

[tex]x + y > 9999[/tex]

We choose the number 7654 and 5463. These are randomly fenerated from digits between 0 and 7.

Adding the two numbers:

[tex]x + y = 7654 + 5463 = 13117 > 9999[/tex]

Hence, the numbers 7654 and 5463 meets the given conditions.

Which of the following transformations will make parallel lines p and q coincide with parallel lines p' and q'?
A.Counterclockwise rotation 90 about the origin
B.Counterclockwise rotation 90 about the origin, followed by translation 4 units to the left
C.Reflection across the x-axis, followed by a counterclockwise 90 rotation about the origin
D.Reflection across the line y-axis, followed by a counterclockwise 90 rotation about the origin

Answers

Answer:

A. Counterclockwise rotation 90 about the origin

Step-by-step explanation:

All we have to do is make the 270°-clockwise [90°-counterclockwise] rotation to map it exactly on q' and p'.

I am joyous to assist you anytime.

Option (A) counterclockwise rotation 90° about the origin makes the the parallel lines p and q will coincide with parallel lines p' and q' is the correct answer.

What is transformation of rotation?

A rotation is a transformation that turns the figure in either a clockwise or counterclockwise direction on the coordinate plane. In both transformations the size and shape of the figure stays exactly the same.

For the given situation,

The graph shows the parallel lines p, q and p', q' in the plane.

The parallel lines p and q coincide with parallel lines p' and q' when we transformed the parallel lines by counterclockwise rotation 90°  about the origin.

After this transformation of rotation, the parallel lines p and q will coincide with parallel lines p' and q'.

Hence we can conclude that option (A) counterclockwise rotation 90° about the origin makes the the parallel lines p and q will coincide with parallel lines p' and q' is the correct answer.

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-3(y+3)=2y+3

what’s the answerrr is there even a solution???

Answers

Answer:

y = -2 2/5

Step-by-step explanation:

-3(y+3)=2y+3

-3y - 9 = 2y + 3

-3y - 2y = 3 + 9

    -5y   = 12

        y = 12/-5  = -12/5 = - 2 2/5

-3(y+3)=2y+3

Mutiply the bracket by -3

(-3)(y)= -3y

(-3)(3)= -9

-3y-9= 2y+3

Move -9 to the other side

Sign changes from -9 to +9

-3y-9+9= 2y+3+9

-3y= 2y+3+9

-3y= 2y+12

Move 2y to the other side

Sign changes from +2y to -2y

-3y-2y= 2y-2y+12

-3y-2y=12

-5y= 12

Divide both sides by -5

-5y/-5= 12/-5

Answer:

y= -12/5 or y=- 2 2/5

Jillian owns 60% of the stock
in a private catering
corporation. There are 1,200
shares in the entire
corporation. How many
shares does Jillian own?

Answers

Answer:

720

Step-by-step explanation:

Percentage share owned by Jillian = 60%

Total shares in corporation = 1200

Number of shares owned by Jillian = [tex]\frac{60*1200}{100} = 720[/tex]

Solve 4(25+5+1+10) use pemdas

Answers

Answer:

164

Step-by-step explanation:

pemdas

parentheses first: 4(25+5+1+10) = 4(41)

parentheses around only on term means multiply

4(41)= 164

Answer:

164

Step-by-step explanation:

PEMDAS requires you to do whatever is asked inside the parenthesis first. So in this case, add all those together to get the answer of 41, then multiply by 4 on the outside

A bag contains the following marbles: 4 black marbles, 14 blue marbles, 8 brown marbles, and 20 green marbles. What is the ratio of blue marbles to green marbles? Express your ratio as a fraction or with a colon

Answers

Answer:

14 to 20 or 7 to 10 is the ratio

Final answer:

The ratio of blue marbles to green marbles is 14:20, which simplifies to 7:10 or as a fraction, 7/10.

Explanation:

The ratio of blue marbles to green marbles from a bag containing 4 black marbles, 14 blue marbles, 8 brown marbles, and 20 green marbles is simply the number of blue marbles divided by the number of green marbles. To express this ratio, we would do the following:

Count the blue marbles: There are 14 blue marbles.

Count the green marbles: There are 20 green marbles.

Write the ratio: The ratio of blue marbles to green marbles would be 14 blue marbles to 20 green marbles.

Express as a fraction or with a colon: As a fraction, this is 14/20, which simplifies to 7/10. Or, using a colon, it is represented as 14:20, which also simplifies to 7:10.

joseph read 12 books in 2 months. what was his rate of reading in books per month ? Express your answer in simplest form

Answers

Answer: He read 6 books in 1 month. 6:1 is the unit rate

Step-by-step explanation:

12/2 = 6

A regular polygon has 24 sides. What's the measure of each exterior angle?
A. 18°
B. 15°
C. 20°
D. 16°

Answers

Hey!

----------------------------------------

Explanation and Solution:

A polygon has to at least have 360° total to form a polygon.

Since there are 24 sides you divide 360 by 24.

360 / 24 = 15

----------------------------------------

Answer:

The measure of each exterior angle has to be at least 15° to form a complete polygon of 24 sides.

----------------------------------------

Hope This Helped! Good Luck!

What is 33+12f=51 please help

Answers

Answer:

f=3/2

Step-by-step explanation:

33+12f=51

1) subtract 33 on both sides:

12f=18

2) Divide both sides by 12:

f=18/12

3) Simplify the fraction:

f=3/2

the answer is f= 3/2

solve by substitution or elimination 5x+3y=-15 -8x-2y=10

Answers

Answer:

x=0, y=-5

Step-by-step explanation:

The system is

(1)  5x+3y=-15  

(2) -8x-2y=10

Let's solve it by elimination.  In order to do it, you have to multiply the equations by suitable numbers in such a way that when you add the 2 equations, one of the unknowns is eliminated

Multiply (1) by 2 and (2) by 3

(1) 10x+6y=-30

(2) -24x-6y=30

Add the two equations

10x-24x+6y-6y=-30+30 ----> -14x=0---->x=0

Now replace this value in any equation, for example in (1)

6y=-30 ----> y=-30/6----> y=-5

Answer:  The required solution is (x, y) = (0, -5).

Step-by-step explanation:  We are given to solve the following system of equations by the method of substitution or elimination :

[tex]5x+3y=-15~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)\\\\-8x-2y=10~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(ii)[/tex]

We will be solving the given system by substitution method.

From equation (ii), we have

[tex]-8x-2y=10\\\\\Rightarrow -4x-y=5\\\\\Rightarrow y=-4x-5~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(iii)[/tex]

Substituting the value of y from equation (iii) in equation (i), we get

[tex]5x+3(-4x-5)=-15\\\\\Rightarrow 5x-12x-15=-15\\\\\Rightarrow -7x=0\\\\\Rightarrow x=0.[/tex]

From equation (iii), we get

[tex]y=-4\times0-5=-5.[/tex]

Thus, the required solution is (x, y) = (0, -5).

Simplify: (sin x)/(1+cot^2 x)

Answers

Answer:

sin³x

Step-by-step explanation:

Using the trigonometric identities

1 + cot²x = csc²x

cscx = [tex]\frac{1}{sinx}[/tex]

Given

[tex]\frac{sinx}{1+cot^2x}[/tex]

= [tex]\frac{sinx}{csc^2x}[/tex]

= [tex]\frac{sinx}{\frac{1}{sin^2x} }[/tex]

= sinx × sin²x

= sin³x

A storeowner orders 25 calculators that cost $32 each.The storeowner can sell each calculator for 40$ .the storeowner sold 22 calculators to cudtomers.He had to return 3 calculators that were never sold and pay a $2 charge for each returned calculator(although the initial cost is refunded)What is the storeowners profit

Answers

Answer:

$74

Step-by-step explanation:

25*32 will be the total amount he spent at first. ($800)

He sells 22 calculators at 40$, 22*40 = 880.

He was unable to sell 3, and he had to pay 2$ per (2*3 = 6)

He had an 80 dollar profit before he returned them, (880-800).

Then he returned three for 6$ (80-6)

His end profit was 74.

The sum of 10 and a number x is equal to 14.

Answers

Answer:

10+x=14; x=4

Step-by-step explanation:

10+x=14

-10     -10

The 10's cancel out

x=4

Answer:  10+x=14

Step-by-step explanation:

The word "sum" implies addition, so we know we are going to be adding some values. The next part of the sentence just give you your two values, 10 and a number (x). We know to add these two together because of the word sum. The final part of the sentence is "is equal to 14" this simply mean =14. Put all the pieces together and you get : 10+x=14

Mark earned $240 in the first week and earns $680 in the fifth week. How much will he earn in the 20th week (suppose his earnings each week have the same increase)​

Answers

Answer:

$ 2330

Step-by-step explanation:

a = $240

Earning at the end of fifth week = $ 680

increase in earnings per weak = ( 680 -240)/2     = 440/2 =110

d =110

l = a + (n-1)d

a20 = 240 + (19 * 110 ) = 240 + 2090 =   2330

Answer:2334

Step-by-step explanation:

You deposit $750 in an account that earns 7.5% simple interest. How much will be in the account after 5 years?

Answers

Answer:

$1,031.25 will be in the account

Answer:

$1031.25.

Step-by-step explanation:

The formula for simple interest is

I = PRT/100 so substituting:

I = 750 * 7.5 * 5 / 100

Interest I =  $281.25.

Amount in account =  750 + 281.25

=  $1031.25.

write 1.888... as a mixed number

Answers

Answer:

Step-by-step explanation:

The answer is 1-4/5

Which angle is in standard position?

Answers

Answer:

RIght

Step-by-step explanation:

RIght is an equal angle so, therefore it would be right

The angle in the standard position is the graph given below.

We have,

An angle in standard position refers to an angle that is formed by the initial side and terminal side in the Cartesian coordinate system.

The initial side is the positive x-axis, and the terminal side is a ray that starts from the origin (0, 0) and extends in a specific direction.

Now,

The graph given below starts from the origin (0, 0).

The initial side is in the positive x-axis.

The terminal is a ray parallel to the positive x-axis.

Thus,

The angle in the standard position is the graph given below.

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Hakeem subtracted 8 from a number then multiply the difference by 5 the result was 20 write and solve an equation to find the number X

Answers

Answer:

(×-8)5=20

(5×-40)=20

5×(-40+40)=(20+40)

5×=60

5×÷5=60÷5

×=12

Based on the equation given, the value of the number is 12.

Let the number be represented by x.

Based on the information given, the equation to solve the question will be:

(x - 8) × 5 = 20

5x - 40 = 20

Collect like terms

5x = 20 + 40

5x = 60

Divide both side by 5

5x/5 = 60/5

x = 12

Therefore, the number is 12.

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