20 points each math answer with optional explination

Which of the following is not a condition that must be met before you can use the quadratic formula to find the solutions of an equation?
Options in picture

Answer:

3.3333 (3 keeps repeating)

Step-by-step explanation:

Answer:

20/6 or 3 1/3

Step-by-step explanation:

4/3 / 2/5 can also be written as 4/3 x 5/2. That would equal 20/6, which when simplified equals 3 1/3

Answer:

18.875 feet left, not sure if you need to round that or not

Answer:

Step-by-step explanation:

Total length of the wall to be painted = 75 1/2 feet

Already painted part = 3/4 of total length

Remaining part to be painted:

Remaining part in feet:

Answer:

The answer is 3

Step-by-step explanation:

1/4(16 + 4)-2 = 3

Hope this helped ya

Answer:

1/4(16+4)-2

1/4(20)-2

5-2

3

Step-by-step explanation:

Answer:

which table ordered pairs represents a linesr function (-7, 24) (0,2) (7,24) (14, 103)

Step-by-step explanation:

Answer: 45 degree and continuous

Step-by-step explanation: i used a protractor

disclamer:pls dont sue me i dont think im right

Answer:

First choice, 21/50

Step-by-step explanation:

16 + 9 + 22 + 26 + 15 + 12 = 100

Out of 100 tries, 16 times landed on 1 and 26 times landed on 4, added together is 42 times it landed on either a 4 or 1 out of 100

42/100, simplify it with 2, 21/50

Answer: yes

Step-by-step explanation:

Answer:

A. 5 days

Step-by-step explanation:

Average number of dogs at an animal shelter: y = -3x + 42

Average number of cats at the animal shelter: y = 4x + 7

Where,

x = number of days after July 1

After how many days is the average number of cats and dogs at the shelter the same?

Equate both functions

-3x + 42 = 4x + 7

-3x - 4x = 7 - 42

-7x = -35

Divide both sides by -7

x = -35 / -7

= 5

x = 5 days

The correct answer is A. 5 days

Answer:

345 in total. If there are already 121 in: 345-121=224 pounds.

Answer:

right triangle  

tep-by-step explanation:

i just took the test and worked this out

Answer:

[tex]\frac{1}{4}\ pound[/tex]

Step-by-step explanation:

[tex]We\ are\ given:\\Amount\ of\ oatmeal\ Mr.Ortiz\ has=\frac{3}{4}\ pounds \\Amount\ of\ Oatmeal\ he\ uses\ to\ bake\ muffins=\frac{2}{3}\ of\ the\ amount\ he\ had\\Now,\\Lets\ first\ find\ the\ amount\ of\ oatmeal\ he\ used=\frac{3}{4}*\frac{2}{3}=\frac{1}{2}\ pounds\\Hence,\\The\ amount\ of\ oatmeal\ remains=Total\ amount\ of\ oatmeal-Amount\\ he\ used\ to\ make\ muffins\\Hence,\\The\ amount\ of\ oatmeal\ left\ with\ Mr.\ Ortiz=\frac{3}{4} - \frac{1}{2} =\frac{1}{4}\ pound[/tex]

Answer:

5, 25

Step-by-step explanation:

Answer:

The value of N = 118

Step-by-step explanation:

750 = 6n + 42

move all the numbers that don't contain n to the right side

6n = 750 - 42

6n = 708

708 / 6 = 118

n = 118

plug the numbers back in

6 ( 118) = 708

708 = 708

plug the 42 back in

708 + 42 = 750

Answer:

The amount of cookies in the small tray = x = 19 cookies

The amount of cookies in the Large tray = y = 40 cookies

Step-by-step explanation:

Let

The amount of cookies in the small tray = x

The amount of cookies in the Large tray = y

We are told:

A caterer is making cookie trays for upcoming holiday parties.

This morning, she made 4 small trays and 4 large trays, which contain a total of 236 cookies.

This is represented Mathematically as:

4x + 4y = 236..... Equation 1

In the afternoon, she made 4 small trays and 1 large tray, which contain a total of 116 cookies.

This is represented Mathematically as:

4x + y = 116 ........ Equation 2

y = 116 - 4x

We solve the above equations using the substitution method

We substitute 116 - 4x for y in Equation 1

4x + 4y = 236..... Equation 1

4x + 4(116 - 4x) = 236

4x + 464 - 16x = 236

Collect like terms

4x - 16x = 236 - 464

-12x = -228

x = -228/-12

x = 19 cookies

Solving for y

y = 116 - 4x

y = 116 - 4 × 19

y = 116 - 76

x = 40 cookies

The number of cookies the different sized trays contained is given as:

The amount of cookies in the small tray = x = 19 cookies

The amount of cookies in the Large tray = y = 40 cookies

9514 1404 393

Answer:

  EL/EF and OS/OJ

Step-by-step explanation:

In the similar triangles, angle F and angle J have the same measure, so will have the same tangent. The tangent is the ratio of the opposite side to the adjacent one.

In ΔFEL, the desired ratio is ...

  tan(F) = EL/EF . . . . . 2nd choice

In ΔJOS, the equivalent ratio is ...

  tan(J) = tan(F) = OS/OJ . . . . . 7th choice

Answer:

he can play 12 games

Step-by-step explanation:

but he is gonna have some tokens left over.

Answer:

Fabian got $7.

Step-by-step explanation:

Isaiah gave $18 to his friends--Ricardo got $4, Jeremiah got $7, and Fabian got the rest. This needs a math equation!

4 + 7 + f = 18

where f is the amount of money Fabian got.

4 + 7 + f = 18

(subtract 4 from both sides)

7 + f = 14

(subtract 7 from both sides)

f = 7

It looks like Fabian got $7! Let's check just to make sure.

4 + 7 + f = 18

4 + 7 + (7) = 18

18 = 18

It checks out!

Answer:

The value of [tex]4x+12-x^2[/tex] is 16.

Step-by-step explanation:

The given expression is [tex]4x+12-x^2\ at\ x=2[/tex].

Put x = 2 in the above expression as follows :

[tex]4x+12-x^2=4(2)+12-(2)^2\\\\=8+12-4\\\\=16[/tex]

Hence, the final answer is 16.

Answer:

[tex]x^3 + 3x\²y + 3xy^2 + y[/tex] [tex]=283[/tex]

[tex]When\ x = 3\ and\ y = 4[/tex]

Step-by-step explanation:

Given

[tex]x^3 + 3x\²y + 3xy^2 + y[/tex]

Required

Solve when x = 3 and y = 4

To do this, we simply substitute  3 for x and 4 for y in [tex]x^3 + 3x\²y + 3xy^2 + y[/tex]

[tex]3^3 + 3 * 3^2 * 4 + 3 * 3 * 4^2 + 4[/tex]

[tex]27 + 3 * 9 * 4 + 3 * 3 * 16 + 4[/tex]

[tex]27 + 108 + 144+ 4[/tex]

[tex]283[/tex]

Hence:

[tex]x^3 + 3x\²y + 3xy^2 + y[/tex] [tex]=283[/tex]

[tex]When\ x = 3\ and\ y = 4[/tex]

Answer:

Step-by-step explanation:

Answer:

The inequality   x÷7<-3

The solution      x<-21

Step-by-step explanation:

Solving-  x÷7<-3

                  x<-3x7

                  x<-21

Answer:

128%

Step-by-step explanation:

Because -5/4 is a negative, no matter what is in front of the % in the128%, as long as it's a positive, it is bigger than -5/4

Answer:

Consequently, any trigonometric identity can be written in many ways. To verify the trigonometric identities, we usually start with the more complicated side of the equation and essentially rewrite the expression until it has been transformed into the same expression as the other side of the equation.

Step-by-step explanation:

Answer:

First choice, 47/100

Step-by-step explanation:

16 + 9 + 22 + 26 + 15 + 12 = 100

The even numbers are 2, 4, and 6. They rolled two 9 times, four 26 times, and six 12 times. Added together and they're 47, so 47/100

There's no simplification of this fraction as theres no number that can be used to divide both 47 and 100

Given:

Consider the given function is

[tex]y=|8x-3|-3[/tex]

To find:

The vertex , axis of symmetry, and transformations of the parent function?

Solution:

We have,

[tex]y=|8x-3|-3[/tex]

[tex]y=\left|8\left(x-\dfrac{3}{8}\right)\right|-3[/tex]

[tex]y=8\left|x-\dfrac{3}{8}\right|-3[/tex]      ...(i)

It is an absolute function.

The vertex form of an absolute function is

[tex]y=a|x-h|+k[/tex]       ...(ii)

where, a is a constant, (h,k) is vertex and x=h is axis of symmetry.

From (i) and (ii), we get

[tex]a=8,h=\dfrac{3}{8},k=-3[/tex]

So,

[tex]\text{Vertex}:(h,k)=\left(\dfrac{3}{8},-3\right)[/tex]

[tex]\text{Axis of symmetry}:x=\dfrac{3}{8}[/tex]

Parent function of an absolute function is

[tex]y=|x|[/tex]

Since, a=8 therefore, parent function vertically stretched by factor 8.

[tex]h=\dfrac{3}{8}>0[/tex], so the function shifts [tex]\dfrac{3}{8}[/tex] unit right.

k=-3<0, so the function shifts 3 units down.

Therefore, the vertex is [tex]\left(\dfrac{3}{8},-3\right)[/tex] and Axis of symmetry is [tex]x=\dfrac{3}{8}[/tex]. The parent function vertically stretched by factor 8, shifts [tex]\dfrac{3}{8}[/tex] unit right and  3 units down.

Answer:

The account will take 7 years to reach a value of $4,020

Step-by-step explanation:

Compound Interest

When it occurs interest in the next period is then earned on the principal sum plus previously accumulated interest.

The formula is:

[tex]{\displaystyle A=P\left(1+{\frac {r}{n}}\right)^{nt}}[/tex]

Where:

A = final amount

P = initial principal balance

r = interest rate

n = number of times interest applied per time period

t = number of time periods elapsed

Ella invested P=$2,700 in an account with an interest rate of r=5.4% (0.054) compounded monthly. Since there are 12 months in a year, n=12.

It will be calculated when will the account have a value of A=$4,020. Substituting all the values in the formula:

[tex]{\displaystyle 4,020=2,700\left(1+{\frac {0.054}{12}}\right)^{12t}}[/tex]

Calculating:

[tex]{\displaystyle 4,020=2,700\left(1.0045)^{12t}}[/tex]

Dividing by 2,700:

[tex]{\displaystyle \frac{4,020}{2,700}=\left(1.0045)^{12t}}[/tex]

To solve this equation for t, we need to apply logarithms:

[tex]{\displaystyle \log\frac{4,020}{2,700}=\log\left(1.0045)^{12t}}[/tex]

Applying the logarithm power rule:

[tex]\displaystyle \log\frac{4,020}{2,700}=12t\log 1.0045[/tex]

Dividing by 12log 1.0045:

[tex]\displaystyle t=\frac{\log\frac{4,020}{2,700}}{12\log 1.0045}[/tex]

Calculating:

t= 7.39 years

Rounding to the nearest year, the account will take 7 years to reach a value of $4,020

Answer:

7  

Step-by-step explanation:

Answer:

Please find attached the required new cereal boxes for the Yum Yum Cereal Company created with Microsoft Visio

Step-by-step explanation:

The required volume of the cereal box = 2,400 cm³

The box is to be drawn and labeled as follows using Microsoft Visio

Box #1 Length = 16 cm, Width = 15 cm, Height = 10 cm

The volume = Length × Width × Height = 16 cm × 15 cm × 10 cm = 2,400 cm³

Box #2 Length = 30 cm, Width = 10 cm, Height = 8 cm

The volume = Length × Width × Height = 30 cm × 10 cm × 8 cm = 2,400 cm³