Mathematics Middle School

x2 + 4 = 7x - 3
Quadratic formula

Answers

Answer 1

Answer:

Step-by-step explanation:

X2 + 4 = 7x - 3Quadratic Formula

Related Questions

Which is an equation for the parabola that has a vertex (6,-3) and passes through the point (2,-2)

Answers

Answer:

c

Step-by-step explanation:

Answer:

The Correct Answer is in fact C : x= -4y^2 -24y -30

Step-by-step explanation:

If you look at the image I attached you can see that C is the only one touching those point

Don't forget to like :)

In a group of 30 people, 10 drink milk but not tea 5 drink tea
but not milk and 13 drink neither tea nor milk. find how many people drink both tea and milk.​

Answers

Answer:

2

Step-by-step explanation:

10 + 13 + 5 = 28 who drink either, or, or neither

30 - 28 = 2

Answer:

2 drink both tea and milk

Step-by-step explanation:

30 people - 13 drink neither = 17 - 10 drink milk but not tea = 7 - 5 drink tea but not milk = 2 drink both tea and milk.

two consecutive integers whose product is 17

Answers

Answer:

8 and 9

Step-by-step explanation:

8 comes after 9 and 8 + 9 = 17

8 and 9 would be the answer

Help plz!!!!! I need help

Answers

Answer: J and K

Step-by-step explanation:

[tex]\sqrt{20}[/tex] is about [tex]4.472135[/tex]

Answer:

J and K

Step-by-step explanation:

√20=4.47

4.47 is almost in between J and K in the number line.

Hence, it's J and K.

Fine the slope of a line parallel to y=-2/5x+4/5

5/2

2/5

-5/2

-2/5

Answers

Answer:

-2/5

Step-by-step explanation:

Parallel lines have the same slope to each other. So if one line has a slope of -2/5, the line parallel to it will also have a slope of -2/5.

Hope this helps!

Answer:

-2/5

Step-by-step explanation:

The slope of the parallel line is going to be the same as the original line.

Which are these two, please help

Answers

Answer:

4. this would be a positive correlation

5. this has no correlation

Step-by-step explanation:

I hope that was the answer you are looking for

Answer:

The first one has a positive association. You can see that if you were to make a like marking the average rate of change, it would be positive.

For the second one, it would actually be both positive and negative. But Since it does both, it has no correlation.

Step-by-step explanation:

Does choosing a blue marble represent the complement event of choosing a red marble? Explain.

Answers

Answer:

No, the probability of choosing a red marble is not the complement of choosing a blue marble.

P(red) + P(blue) = 3/5, not 1.

The number of blue and red marbles does not add to the total number of outcomes.

There are other marbles besides red ones and blue ones.

Step-by-step explanation:

i got it right.

Answer:

The complementary event for choosing a red marble is choosing a blue or purple. The total number of marbles is 5. The probability of choosing a red marble is 1/5, and the complement would be 4/5. That is not the same as choosing a blue marble.

What is the slope of the line?

________

Answers

Answer:

3 over 1

no problemnndjdjd

Which is equivalent to after it has been simplified completely? Assume m ≠ 0.




Answers

Answer:

It's letter A.

The required simplified solution of the given expression is 5m/14√3m. Option C is correct.

What is simplification?

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

here,
Given expression,
= √[75m⁹/196m⁴]
= √[25m⁴/196[3m]]
= 5m/14√3m    [since 25 = 5² and 196 = 14²]

Thus, the required simplified solution of the given expression is 5m/14√3m. Option C is correct.

Learn more about simplification here:

https://brainly.com/question/12501526

#SPJ6

Find a numerical value of one trigonometric function of x for cscx = sinx tanx + cosx

Answers

Answer:

Step-by-step explanation:

we have

[tex]cscx = sinx tanx + cosx\\\\\frac{1}{sinx}=sinx.\frac{sinx}{cosx} +cosx\\\\\frac{1}{sinx}.sinx.cosx= sinx.\frac{sinx}{cosx}.sinx.cosx+cosx.sinx.cosx\\ cosx= (sinx)^{3} +sinx.(cosx)^{2} \\cosx= sinx[(sinx)^{2}+(cosx)^{2})\\ cosx=sinx.1\\cosx=sinx\\tanx=1\\x=\frac{\pi}{4} +k\pi,k-integer.[/tex]

Answer:

cot x=1

Step-by-step explanation:

got it right

What is the measure of ∠4?

Answers

I am pretty sure that four would equal 59 degrees because 60+61 equals 121 degrees and that line should in total equal 180. So you would do 180-121 which gives you 59.

i need help with thisss hurry!

Answers

Answer:

December

Step-by-step explanation:

87-38 = 49

Used cars had the largest range in monthly sales, I know this because the range of new car monthly sale is 31 because 51-20=31. Old car sales on the other hand had a higher range of 75 because 87-12=75.
Hope this helps!!!

The graph of quadratic function k is shown on the grid.
у
Which statements are best supported by the graph of k?
11
10
I. The x-intercept is located at(-3,0).
II. The coordinates of the y-intercept are(0,9).
III. The axis of symmetry 15 X=-3.
F I and II only
G I and III only
HII and III only
J
I, II, and III

Answers

Answer:

The answer is I, II, and III.

Step-by-step explanation:

Answer: I , II , III

Step-by-step explanation:

If you need to show multiplication, do not use the letter w. Use the asterisk
(*) symbol instead, or simplify your answer.
Mr. Jones's algebra class has too many students in it. If the class were split
exactly in equal parts to form 3 new classes, each class would have no more
than 14 students in it

Answers

Answer:

42 students total, 14*3=42

Step-by-step explanation:

I'm not exactly sure what the question is, but I am assuming that it is , How many students were in the original class?

If you have 14 students in 3 classes, then you need to multiply each class by 14.

14 students × 3 classes = 42 students in the original class

What is the volume of a sphere with a diameter of 3.2 m, rounded to the nearest tenth
of a cubic meter?

Answers

Answer:

Volume of a sphere = 17.164 m³ (Approx)

Step-by-step explanation:

Given:

Diameter of a sphere = 3.2 m

Radius of a sphere = Diameter / 2 = 3.2 / 2 = 1.6 m

Find:

Volume of a sphere = ?

Computation:

[tex]Volume\ of\ a\ sphere =\frac{4}{3}\pi \times r^3 \\\\Volume\ of\ a\ sphere =\frac{4}{3}\times \frac{22}{7} \times (1.6)^3 \\\\Volume\ of\ a\ sphere =\frac{4}{3}\times \frac{22}{7} \times 4.096\\\\Volume\ of\ a\ sphere =17.164[/tex]

Volume of a sphere = 17.164 m³ (Approx)

Answer:

17.2

Step-by-step explanation:

Will Mark Brainliest


Parabola: You must include the focus, vertex, lactus rectum, directrix, and the domain from the equation: y=-(x-0)^2 +15

Hyperbola: You must include the equations of the asymptotes and the domain from the equation: (2y^(2))/(b^(2))-(x^(2))/(a^(2))=7

Ellipse: You must include the foci, vertices, and eccentricity from the equation: 4x^(2)-1x+10y^(2)-50y-1=0

Answers

Answer:

Hi, i'm not trying to be rude but, you can search it up. there are many videos that explain it.

Step-by-step explanation:

What did the use of atomic bombs during World War II lead to?

A ban on all nuclear weapons for all developed countries for years in the future
The need for a global regulatory body to monitor the use of nuclear weapons
A sharing of all nuclear weapons technology to make all countries equal
An arms race between the United States and Soviet Union
Question 2(Multiple Choice Worth 5 points)


Which of the following is a common argument against the U.S. decision to drop the atomic bomb?

The study of the effect of atomic weapons allowed nuclear power to be used as energy.
The use of the atomic bomb avoided additional loss of life for the Allies.
The Japanese were more willing to surrender than the U.S. military thought.
The dropping of the atomic bomb would act as a deterrent to future wars.
Question 3(Multiple Choice Worth 5 points)


What is the best explanation for why the United States decided to target Hiroshima?

It was a center of communications, military command, and supply point for the Japanese army.
It would have few casualties because it was nearly destroyed by previous bombings.
It was a religiously and culturally significant city for the Japanese monarchy.
It was a city with many family connections to Emperor Hirohito and military leaders.
Question 4(Multiple Choice Worth 5 points)


Many Americans approved of the use of atomic weapons on Japan despite their destructive power because

they believed it would shorten the war and ultimately save American lives
they were eager to see if this new technology was effective in preventing wars
they believed that the atom bomb would cause no more damage than regular bombs
they were told that it was the only certain way to defeat the militant Japanese empire

Answers

1. An arms race between the United States and Soviet Union

2. The use of the atomic bomb avoided additional loss of life for the Allies.

3. It was a center of communications, military command, and supply point for the Japanese army.

4. they believed it would shorten the war and ultimately save American lives

5. if i could get brainliest that would be great

Lines a and b are parallel. Line c is transversal. Which statement is true?
Help

Answers

Answer:

D, because they are vertical.

Step-by-step explanation:

Without doing it mathematically, if you look at the graph and match all pairs of angles with their statements, you can check and see if they look equal. Of course, if you were to do it mathematically, you would need to know the vocabulary.

need asap! please help!

Answers

Answer:

x = 2

Step-by-step explanation:

7x + 5 = 19

Subtract 5 on both sides

7x = 14

Divide by 7 to isolate x

x = 2

Hope this helps!

Look at the picture:)

Answers

The height is 82, the centimeters are taken, and although most of the dots are on 84, it asks for the shortest height, so it will be 82.

Draw the shape described below and find its total surface area.
A cylinder 25 ft tall with a diameter of 12 f

Answers

Answer:

hope this helps :)

Step-by-step explanation:

8:07

Cylinder volume & surface area (video)

A clothing store donated a percent of every sale to hospitals. The total sales were $6,500 so the store
donated $260. What percent of $6,500 was donated to hospitals?

I’m literally confused

Answers

the answer is 4%

1) work out 1%
6500/100 = 65

2)work out how many times 65 goes into 260
260/65= 4

Math question down below

Answers

Answer:

e

Step-by-step explanation:

Answer:

22

Step-by-step explanation:

total is 72

72=12×6

22 =72-8-12-10-6-14

Which graph represents the function f(x) =1/3 |x|?

Answers

Step-by-step explanation:

f(x) = 1/3|x|

then

f(x) = 1/3x  , if x ≥ 0

and

f(x) = -1/3x  , if x ≤ 0

the slope of f(x) = 1/3x is 1/3

the slope of f(x) = -1/3x is -1/3

this two above conditions apply on to the fourth graph to the right.

Can Somebody Help Me On This Plzzzz ???????????

Answers

Answer:

its D

Step-by-step explanation:

If you have a cubic polynomial of the form y = ax^3 + bx^2 + cx + d and lets say it passes through the points (2,28), (-1, -5), (4, 220), and (-2, -20) what would the coefficients a, b, c, and d equal? So confused, I'd greatly appreciate help! Thank you!

Answers

Step-by-step explanation:

Step 1:  Solve using the first point

(2, 28)

[tex]28 = a(2)^3 + b(2)^2 + c(2) + d[/tex]

[tex]28 = 8a + 4b + 2c + d[/tex]

Step 2:  Solve using the second point

(-1, -5)

[tex]-5 = a(-1)^3 + b(-1)^2 + c(-1) + d[/tex]

[tex]-5 = -a + b - c + d[/tex]

Step 3:  Solve using the third point

(4, 220)

[tex]220 = a(4)^3 + b(4)^2 + c(4) + d[/tex]

[tex]220 = 64a + 16b + 4c + d[/tex]

Step 4:  Solve using the fourth point

(-2, -20)

[tex]-20 = a(-2)^3 + b(-2)^2 + c(-2) + d[/tex]

[tex]-20 = -8a + 4b - 2c + d[/tex]

Step 5:  Combine the first and fourth equations

[tex]28 - 20 = 8a - 8a + 4b + 4b + 2c - 2c + d + d[/tex]

[tex]8 = 8b + 2d[/tex]

[tex]8 - 8b = 8b - 8b + 2d[/tex]

[tex](8 -8b)/2 = 2d/2[/tex]

[tex]4 - 4b = d[/tex]

Step 6:  Solve for c in the second equation

[tex]-5 + 5 = -a + b - c + d + 5[/tex]

[tex]0 + c = -a + b - c + c + d + 5[/tex]

[tex]c = -a + b + d + 5[/tex]

Step 7:  Substitute d with the stuff we got in step 5

[tex]c = -a + b + (4 - 4b) + 5[/tex]

[tex]c = -a + b + 4 - 4b + 5[/tex]

[tex]c = -a - 3b + 9[/tex]

Step 8:  Substitute d and c into the first equation

[tex]28 = 8a + 4b + 2(-a - 3b + 9) + (4 - 4b)[/tex]

[tex]28 = 8a + 4b - 2a - 6b + 18 + 4 - 4b[/tex]

[tex]28 - 22 = 6a - 6b + 22 - 22[/tex]

[tex]6 / 6 = (6a - 6b) / 6[/tex]

[tex]1 + b = a - b + b[/tex]

[tex]1 + b = a[/tex]

Step 9:  Substitute a, b, and c into the third equation

[tex]220 = 64(1 + b) + 16b + 4(-(1 + b) - 3b + 9) + (4 - 4b)[/tex]

[tex]220 = 64 + 64b + 16b + 4(-1 - b - 3b + 9) + 4 - 4b[/tex]

[tex]220 - 100 = 60b + 100 - 100[/tex]

[tex]120 / 60 = 60b / 60[/tex]

[tex]2 = b[/tex]

Step 10:  Find a using b = 2

[tex]a = b + 1[/tex]

[tex]a = (2) + 1[/tex]

[tex]a = 3[/tex]

Step 11:  Find c using a = 3 and b = 2

[tex]c = -a - 3b + 9[/tex]

[tex]c = -(3) - 3(2) + 9[/tex]

[tex]c = -3 - 6 + 9[/tex]

[tex]c = 0[/tex]

Step 12:  Find d using b = 2

[tex]d = 4 - 4b[/tex]

[tex]d = 4 - 4(2)[/tex]

[tex]d = 4 - 8[/tex]

[tex]d = -4[/tex]

Answer:  [tex]a = 3, b = 2, c = 0,d = -4[/tex]

Answer:

a = 3

b = 2

c = 0

d = -4

Step-by-step explanation:

Form 4 equations and solve simultaneously

28 = a(2)³ + b(2)² + c(2) + d

28 = 8a + 4b + 2c + d (1)

-5 = -a + b - c + d (2)

220 = 64a + 16b + 4c + d (3)

-20 = -8a + 4b - 2c + d (4)

(1) + (4)

28 = 8a + 4b + 2c + d

-20 = -8a + 4b - 2c + d

8 = 8b + 2d

d = 4 - 4b

Equation (2)

c = -a + b + d + 5

c = -a + b + 4 - 4b+ 5

c = -a - 3b + 9

28 = 8a + 4b + 2c + d (1)

28 = 8a + 4b + 2(-a - 3b + 9) + 4 - 4b

28 = 6a - 6b + 22

6a - 6b = 6

a - b = 1

a = b + 1

220 = 64a + 16b + 4c + d (3)

220 = 64(b + 1) + 16b + 4(-b - 1 - 3b + 9) + 4 - 4b

220 = 60b + 100

60b = 120

b = 2

a = 2 + 1

a = 3

c = -3 - 3(2) + 9

c = 0

d = 4 - 4(2)

d = -4


Can someone help me please is this correct?

Answers

Answer:

Subtraction.

Step-by-step explanation:

You Subtract 6 on both sides first and then you multiply the denominator which is 11 to the other side of the equal sign.


Compute the amount of interest earned in the following simple interest problem.

A deposit of $295 at 7% for 270 days

Answers

Answer:

$253.33

Step-by-step explanation:

i did the test

Consider the cartesian equation of a circle, y=-2+- sqrt 36-(x-1)^2 , verses the parametric equations of the same circle: x=1+6 cos t y=-2+6sin t

Answers

What are the advantages of the parametric equations

Answer:

Step-by-step explanation:

Parametric equations shows the relation between a group of quantities by expressing the coordinates of points of a curve and function as one or more independent variables.

From  the question given; the advantages of parametric equations  given

x = 1 + 6 cos t

y= -2 + 6 sin t

are :

1) For a given value of the independent variable the parametric equation is used exactly one point on the graph

2) the parametric equations  have a finite domain

3) the parametric equation is easier to enter into a calculator for graphic

Answer:

That dude was wrong on one of them!

A, C, E

35 POINTS HELP ASAP!!!

Answers

Answer: 3

Step-by-step explanation:

[tex]3:1[/tex]

[tex]\frac{3}{1}=3[/tex]

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