Which statements describe the graph of y = 4x2 28x 49? check all that apply. the graph has two x-intercepts because 4x2 28x 49 has two different factors. the equation 2x 7 = 0 can be used to find a zero of the function. the equation (2x – 7)2 = 0 can be used to find the y-intercept. the graph has a double root at x = startfraction negative 7 over 2 endfraction. the graph intersects the y-axis at y = 49.

Answers

Answer 1

The true statements about the graph y = 4x2 + 28x + 49 are as follows;

(b) The equation 2x + 7 = 0 can be used to find a zero of the function.

(d) The graph has a double root at x = -7/2.

(e) The graph intersects the y-axis at y = 49.

What is the function of the graph?

The graph of a function f is the graph of the equation y = f (x).

The function is given as:

[tex]\rm y = 4x^2 + 28x + 49[/tex]

Express 28x and 14x + 14x; so, we have:

[tex]\rm y = 4x^2 + 14x+14x + 49[/tex]

Factorize

[tex]\rm y = 4x^2 + 14x+14x + 49\\\\y = 2x(2x+7)+7(2x+7)\\\\y=(2x+7)(2x+7)[/tex]

Express as a perfect square

[tex]\rm y = (2x+7)^2[/tex]

This means that the graph of the equation has a double root.

It also means that 2x + 7 = 0 can be used to determine the root/zero of the function.

Substitute 0 for x in to determine the y-intercept

[tex]\rm y = (2x+7)^2\\\\\rm y = (2(0)+7)^2\\\\\rm y = (0+7)^2\\\\y=49[/tex]

This means that the graph intersects with the y-axis at y = 49

Hence, the true statements are (b), (d), and (e)

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Answer 2

Answer:

b,d, and ,e

Step-by-step explanation:

trust i just did it


Related Questions

Which expression is equivalent to startfraction 5 y cubed over (5 y) superscript negative 2 baseline endfraction?

Answers

The expression that is equivalent to the given expression is 125y⁵.

The given expression is:

[tex]\frac{5y^{3} }{(5y)^{-2} }[/tex]

What are some important power rules applicable to the given problem?

Some important power rules applicable to this problem are:

1)[tex](ab)^m=a^mb^m[/tex]

2)[tex]\frac{1}{a^{-n} } =a^n[/tex]

So, [tex]\frac{5y^{3} }{(5y)^{-2} } =\frac{5y^{3} }{5^{-2} y^{-2} }[/tex].....by power rule (1)

[tex]=(\frac{5}{5^{-2} } )(\frac{y^3}{y^{-2} })[/tex]

[tex]=5^3y^5[/tex].....by power rule(2)

[tex]=125y^5[/tex]

Hence, the expression that is equivalent to the given expression is 125y⁵.

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Identify the percent of change as an increase or a decrease.

12 inches to 36 inches

Find the percent of change.

Answers

Answer:

increase of 300%

Step-by-step explanation:

What is the answer for the two?

Answers

Answer:

when DAE is at 16° and EDC is at 64° then ABC is at 45° and BCD is at 55°.

Find the area! (no explanation neededd)

Answers

Area of top rectangle

9×545mi²

Area of horizontal rectangle (Left):-

9(9+5)14(9)126mi²

Area of right rectangle:-

4×624mi²

Area of triangle:-

1/2(4)(4)8mi²

Total:-

8+45+126+24203mi²

Andre is solving the equation 4(x + 3) = 7. He says,"I can subtract from each side to get
4x = 1 and then divide by 4 to get x = "Kiran says, "I think you made a mistake."

a. How can Kiran know for sure that Andre's
solution is incorrect?

b. Describe Andre's error and explain how to
correct his work.

Answers

Answer:

Step-by-step explanation:

Kiran can know for sure that it is incorrect by substituting x with 1/4

Solving for the equation gives 4(1/4 + 3) = 7
distributing gives 1 + 3 = 7
obviously this is incorrect

b)
Andre's error is that he didnt distribute 7
Distributing 7 results in
4x + 12 = 7
then subtracting 12 from both sides
4x = -5
x = -5/4

Answer:

x=-1.25

Step-by-step explanation:

well he was wrong about the 4x = 1.

4(x+3)=7

4x+12=7    1. - 12 on both sides

4x=-5   2. 4 on both sides

x=-1.25

What is the ratio of 2 miles driven and $6. 00 cab fare

Answers

Answer:

2 to 6, 2/6, or 2:6

Step-by-step explanation:

a ratio is a comparison of two values expressed as a quotient

solve for w and y

w=

y=​

Answers

Answer:

[tex]w = 10 \sqrt{2} [/tex]

[tex]y = 20[/tex]

Step-by-step explanation:

Use the Sine Rule to solve for the unknown sides.

maya drove 693 miles in 11 hours how long would it take her to drive 819 miles

Answers

Answer:

13

Step-by-step explanation:

693/11 = 63 miles per hour

819/63 = 13

There is a pair of parallel sides in the following shape.

What is the area of the shape?

Answers

Answer:

The given shape is Trapezium

Area of Trapezium= 1/2h(L1+L2)

=1/2×7×(11+3

=1/2×7×14

=49

Your answer is 49

What is the sample space for a spinner with four equal sections, numbered 1 to 4?

Answers

Answer:

Step-by-step explanation:

we are given A spinner has six equal-sized sections numbered 1, 1, 2, 2, 3, and 4 Sample space:

the sample space of an experiment or random trial is the set of all possible outcomes or results of that experimentso, we will only unique outcomesso, sample space is S={1,2,3,4}................Answer

Evaluate each expression
6! =
3! • 2=
31

Answers

N-FACTORIAL!

[tex] \mathbb{ \color{brown} \: PROBLEM } \: \: \bold{{ \color{brown}{1}}} : [/tex]

[tex] \mathcal{SOLUTION: }[/tex]

[tex] \: \bold{ \red{6!}= 6×5×4×3×2×1= \boxed{ \bold{ \blue{720}}}}[/tex]

Therefore, the value of 6! is 720.

━┈─────────────────────┈━

[tex] \mathbb{ \color{brown} \: PROBLEM } \: \: \bold{{ \color{brown}{2}}} : [/tex]

[tex] \mathcal{SOLUTION: }[/tex]

[tex] \bold{3! \cdot 2! }\implies \bold{(3×2×1) \cdot( 2×1 )}[/tex]

[tex] \: \: \: \: \: \: \: \: \: \: \: \: \implies \: \bold{ 6 \times 2} = \boxed{ \bold{ \blue{12}}}[/tex]

Therefore, the value of the given expression is 12.

━┈─────────────────────┈━

EXPLANATION:The mathematical symbol n! is read as "n factorial". The exclamation point "!" is read as factorial. And please remember or take note that 0! is equal to 1, and 1! is also equal to 1.

ฅ^•ﻌ•^ฅ

_______________∞_______________

Factor –8x3 – 2x2 – 12x – 3 by grouping. what is the resulting expression? (2x2 – 3)(4x 1) (–2x2 – 3)(–4x 1) (2x2 – 3)(–4x 1) (–2x2 – 3)(4x 1)

Answers

The factors of the expression are [tex]\rm (4x+1)(-2x^2-3)[/tex]

How to find factors in the expression?

First group the first two terms and the last two terms together respectively.

The factors of the expression are given by;

[tex]\rm -8x^3 -2x^2 - 12x - 3\\\\-2x^2(4x+1)-3(4x+1)\\\\(4x+1)(-2x^2-3)[/tex]

Hence, the factors of the expression are [tex]\rm (4x+1)(-2x^2-3)[/tex].

To know more about factors click the link given below.

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Help me please.Thank you.
Find the value of the function with the given value.
f(a)= -2a^4+11a^3+5a^2+42 at a=6

Answers

Answer:

6

Step-by-step explanation:

if you plug in and add it all up you get 6

5. Are the two triangles shown below similar? If so, name the value of the scale factor.

A. no, these triangles are not similar
B. yes, these are similar. the scale factor is 0.8.
C. yes, these are similar. the scale factor is 0.4.
D. yes, these are similar. the scale factor is 0.6.

Answers

A. no, these triangles are not similar

Create an equation that models the number of tiles in a given stage.

Answers

The number of tiles (y) at any x stage is given by the equation y = 2x - 1

What is an equation?

An equation is an expression that shows the relationship between two or more variables and numbers.

From the table, the number of tiles increases by 2 for every additional stage. Let y represent the number of tiles and x represent the stage, hence:

y = 1 + (x - 1)2

y = 2x - 1

The number of tiles (y) at any x stage is given by the equation y = 2x - 1

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What is the equation of the line that passes through the point (-2, -2) and is perpendicular to the line y = 2x+5

Answers

product of two perpendicular line slopes must equals - 1 ;

As you know the coefficient of x is the slope of the line

Thus if we suppose that line has a slope of m , we have :

m × 2 = - 1

m = - 1 / 2

__________________________________

y = ax + b

y = - 1 / 2 x + b

The line passes through the point ( - 2 , - 2 ) thus :

- 2 = - 1 /2 × ( - 2 ) + b

- 2 = 1 + b

b = - 3

__________________________________

y = - 1/2 x - 3

Which mean the option c is the correct answer.

Answer:

y = -1/2(x) - 4

Step-by-step explanation:

[tex]y=-\frac{1}{2}(x)-4[/tex]

Which equation is quadratic in form? 3x^5+8x^3+6=0

Answers

Answer:

exponential equation

thia is the form of quadratic equation

A small plot of land is shaped like the figure shown.
What is the area of the plot of land?
А)
(A
43 yd?
(В) 153 yd?
© 306 yd?
D 1,188 yd?

Answers

B) 153 yd²

hope this helps :)

What is a golden rectangle and give an example of a real-life situation that uses a golden rectangle?

Answers

The Golden Rectangle—also called the Golden Mean or the Section d’Or, is a form with certain ratio of parts. That ratio—1.618…—is an irrational number, which means the decimal continues with no known end.

A rectangle with proportions close to the Golden Ratio of approximately 1:1.618 is believed to be aesthetically pleasing.

What is the golden rectangle?

A rectangle with sides that are in the golden ratio, or roughly 1:1.618, is referred to as a golden rectangle. This ratio has been employed in art, architecture, and design for ages since it is seen to be aesthetically beautiful.

To build a golden rectangle, start with a square and then add a smaller square to one of its sides to form a rectangle. The smaller rectangle is then used to repeat this procedure until you obtain a rectangle whose sides are in the golden ratio.

The layout of credit cards is one instance of a situation in real life that makes use of a golden rectangle. Golden rectangles are a popular shape for credit cards because of their attractive proportions and visual balance. A golden rectangle may also be used in credit card designs to help the card stand out from other cards and be simpler to recognize. The dimensions of several paintings, sculptures, and structures are more instances of how golden rectangles are used in the design.

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6) WILL GIVE BRAINIEST TO BEST ANSWER
find the equations use to solve
Graphing!

Answers

Answer:

A: y=-2x-2

B: y=-2x+2

Step-by-step explanation:

Can someone help me with this problem? Thanks

Answers

Answer:

8(5+8)

Step-by-step explanation:

The GCF of 40 and 64 is 8. Then you divide 40 and 64 by 8.

In 2018 there were 238 Republicans and 201 Democrats in the House of Representatives. Find the percentage of Democrats in the House of Representatives in 2018

Answers

Answer:

45.7% or if rounded, 46%

Step-by-step explanation:

1st, you add up the total of people in the House of Representatives.

238+201=439

Then divide the number of Democrats 201 by the total number 439 to get .457  which is 45.7% or if you need to round 46%

To double check, multiply the total number 439 X 45.7% to get 200.6

A circle has a circumference of 3 meters. What is the circle's radius?
Use 3.14 for pi and round your answer to the nearest tenth.

PLS HELP!!! No links pls and ty <3

Answers

Formula for the circumference of a circle = pi x 2 x radius

Circumference = 3

pi = 3.14

radius = r

---To find the radius, we will need to solve for it. Start by plugging in what we know.

3 = 3.14 x 2 x r

---Simplify by multiplying 3.14 by 2

3 = 6.28 x r

---Divide both sides by 6.28 to solve for r

r = 3 / 6.28 = 0.4777

---Round the decimal to the nearest tenth

r = 0.5

Hope this helps!

Answer:

r=0.5

Solution:Circumference of a circle - C=2πrPlug in the values we are given:3=2πrSimplify:3=6.3rDivide both sides by 6.3:r=0.5

Hope it helps.

Do comment if you have any query.

determine the solution to the system of equations g(x)=3x+2, f(x)=x-4+2

Answers

The solution to the given system of equations is the point (1, 5).

How to solve the system of equations?

Here we have the system of equations:

g(x) = 3x + 2

f(x) = |x - 4| + 2

To solve this, first you can see where the graphs intercept on the graph (the intercept point is the solution to the system)

But we can also solve it analytically. To do it, we have:

g(x) = f(x)

3x + 2 =  |x - 4| + 2

3x =  |x - 4|

Notice that the only solution of the above equation is x = 1, so we know that it is the x-value of the solution.

To get the y-value, we just evaluate one of the two given functions on x = 1.

f(1) = |1 - 4| + 2= 3 + 2 = 5

Then the solution to the system is the point (1, 5).

If you want to learn more about systems of equations, you can read:

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2 tens 3 ones 2 tenths
Change it into a decimal form

Answers

2 tens 3 ones 2 tenths

23.2
23.2
The second 2 goes behind the decimal point because it says “tenths” the “ths” means it goes behind the decimal point like hundredths, thousandths

these figures are similar. the area of one is given. find the area of the other
I'll give brainliest

also the answer isn't 12

Answers

Answer:

I believe 6in squared is the correct answer

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

6*?=24 in

6*4=24in

if it is 3 in on the smaller one, it also will be 2 so it will be 6.

Answers with steps please

Answers

Answer:

Step-by-step explanation:

Hypotenuse: This the longest side of right angle triangle and it is opposite to 90°

[tex]1) Sin \ P = \dfrac{Oppossite \ side \ of \ \angle P}{hypotenuse}\\\\ =\dfrac{4\sqrt{10}}{14}[/tex]

[tex]Cos \ P =\dfrac{adjacent \ side \ of \angle P}{hypotenuse}\\=\dfrac{6}{14}[/tex]

[tex]7)\sf Cos \ X = \dfrac{adjacent \ side \ of \angle X}{hypotenuse}\\\\Cos \ X =\dfrac{8}{18}\\\\Cos \ X = 0.4\\\\X = Cos^{-1} \ 0.4[/tex]

X = 66°

8) Here, opposite side is given and we have to find hypotenuse. So, use Sin.

[tex]Sin \ 65 =\dfrac{10}{x}\\\\0.9 *x = 10\\\\x =\dfrac{10}{0.9}[/tex]

x = 11.1

10) Here, opposite side is given and we have to find hypotenuse. So, use Sin to find x

[tex]Sin \ X =\dfrac{6}{9}\\\\Sin \ X = 0.67\\\\x= Sin^{-1} \ 0.97[/tex]

x = 42°

Find the unknown side length, x. Write your answer in simplest radical form.
A. 4132
B. 22
C. 16/5
D. 16 V13

Answers

Answer:

C

Step-by-step explanation:

Use the pythagorean theorem.

32^2+b^2=48^2

1024+b^2=2304

Subtract 1024

b^2=1280

Square root

b=sqrt(1280)

Now simplify sqrt(1280)

sqrt(1280) = sqrt(256*5)

You can take the square root of 256 since it is a perfect square so take it out of the radical.

sqrt(256*5)=16sqrt(5)

So the answer is c, 16[tex]\sqrt{5}[/tex]

Answer:

C. 16/5

Step-by-step explanation:

pythagorean theorem

a^2 + b^2 = c^2

divide 48 and 32 by 16

a= 2 c= 3

4 + b^2 = 9

b^2 = 5

b = √5

then multiply 16 with √5

which =

16√5

At the end of a football game, the players were given the choice of having a bottle of water or a bottle of juice

Answers

There were 16 total players at the baseball game of which 12 of the players chose a bottle of water.

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables.

Let p represent the total number of players, 2 of the players chose a bottle of water which accounted for 3/4 of the total players, hence:

(3/4)p = 12

p = 16

There were 16 total players at the baseball game.

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Two angles are supplementary. If angle A is five times the sum of the angle B plus 7. 2, what is angle B

Answers

Answer:

Angle B = 24°

Step-by-step explanation:

Given:

Angles are supplementary Angle A is 5 times the sum of angle B plus 7.2

that means, Angle A = 5 ( Angle B + 7.2 )

Now,

Let Angle B = x (say)

•.• Angle A = 5 ( x + 7.2 )

Supplementary angles are a pair of angles that make sum of 180° .

Therefore, As it is given that the angles are supplementary , the sum of Angle A and Angle B will be equal to 180°.

Angle A + Angle B = 180°

[tex]⇢x + 5(x + 7.2) = 180[/tex]

[tex]⇢x + 5x + 36 = 180[/tex]

[tex]⇢6x = 180 - 36[/tex]

[tex]⇢6x = 144[/tex]

[tex]⇢x = \frac{144}{6} [/tex]

[tex]⇢ \boxed{x = 24}[/tex]

Now, substituting the value of x. . .

Angle B = 24°Angle A = 5( 24+ 7.2 ) = 5( 31.2 ) = 156°

Thus, Angle B comes out 24°

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