40 points!! look at attachment! help me understand and how to solve. ​

Answer:

8 hours

Step-by-step explanation:

Distance d = 440 miles

Average rate v = 55 miles/hour

Distance = rate x time

440 = 55 x time

time = 440/55 = 8 hours

the answer is B hope this helps

Answer:

[tex]=77.5[/tex]

Step-by-step explanation:

[tex]\mathrm{Convert\:}155\%\mathrm{\:into\:a\:decimal\:and\:multiply\:by\:}50[/tex]

[tex]Percent-\mathrm{A\:ratio\:expressed\:as\:a\:fraction\:out\:of\:a\:hundred.}[/tex]

[tex]=155\%\:[/tex]

In order to covert a percent to a ratio, divide it by 100: a%  =[tex]\frac{a}{100}[/tex]

[tex]a=155[/tex]

[tex]155\%\:=\frac{155}{100}[/tex]

[tex]\mathrm{Convert\:to\:decimal\:form}[/tex]

[tex]=1.55[/tex]

[tex]\mathrm{Multiply\:}1.55\mathrm{\:by\:}50[/tex]

[tex]=1.55\cdot \:50[/tex]

[tex]\mathrm{Simplify}\:1.55\cdot \:50[/tex]

[tex]=77.5[/tex]

Answer:

Given function: [tex]f(x)=(x-2)^2 (x+1) (x-4)[/tex]

The factors give us the zeros (x-intercepts) of the graph.

To find the zeros, set the function to zero and solve for x:

[tex](x-2)^2 (x+1) (x-4)=0[/tex]

Therefore,

[tex](x-2)^2=0\implies x-2=0 \implies x=2[/tex]

[tex](x+1)=0\implies x=-1[/tex]

[tex](x-4)=0 \implies x=4[/tex]

So the zeros are at (2, 0)  (-1, 0) and (4, 0)

The multiplicity of a zero is the number of times the factor appears in the fully factored form of the polynomial, i.e. the exponent on the corresponding factor.

If the zero has an even multiplicity, the graph touches and bounces off the x-axis at that point.

If the zero has an odd multiplicity, the graph crosses the x-axis at that point.

To find the y-intercept, expand the function:

[tex]f(x)=x^4-7x^3+12x^2+4x-16[/tex]

Set [tex]x = 0[/tex] and solve:

[tex]f(0)=(0)^4-7(0)^3+12(0)^2+4(0)-16=-16[/tex]

Therefore, the y-intercept is at (0, -16)

The end behavior of a polynomial function is the behavior of the graph of f(x) as x approaches positive infinity or negative infinity.

As the leading degree is 4 (even) and the leading coefficient is positive, the end behavior of the function is:

[tex]f(x) \rightarrow + \infty \textsf{ as } x \rightarrow - \infty[/tex]

[tex]f(x) \rightarrow + \infty \textsf{ as } x \rightarrow + \infty[/tex]

Answer:

102

Step-by-step explanation:

25 x 3 - 5 + 32

75 - 5 + 32

70 + 32

=102

Answer:

102

Step-by-step explanation:

25(3)-5+32

75-5+32

70+32

102

Answer:

236.6 miles

Step-by-step explanation:

Add 11.7 + 6.5 which equals 18.2. Then you multiply that by 13 to get 236.6 miles.

Answer:

- Response variable: The amount of vision the patients obtained after surgery.

- Explanatory variable: The type of detached retina surgery carried out.

Step-by-step explanation:

Response variable is the main focus of a question when carrying out a study or experiment. Whereas, an explanatory variable is the variable one that explains the changes in the response variable.

Now, in the question we are given it is clear that the main focus of the study is to determine if patients were able to regain vision.

Thus, the response variable is; the amount of vision the patients obtained after surgery.

Now, what determines if patients were able to regain vision is hinged on the 2 retina surgeries which are: laser surgery and freezing treatment.

Thus, the explanatory variable is; The type of detached retina surgery.

Answer:

Answer:

where question

Step-by-step explanation:

Answer:

the answer would be A.

Step-by-step explanation:

hope this helps

Answer:

They each lost $1500, in total they earned $8,000 but with a deduction of $1500, the total is now $6500

Step-by-step explanation:

Answer:

Exact Form - 7/5

Decimal form - 1.4

Mixed Form 1 2/5

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

Step-by-step explanation:

[tex]12x - 15 = 6 - 3x[/tex]

Move all x values to one side of the equation, and all constant values to the other side of the equation, and don't forget to flip the signs when going from left to right or vice versa.

[tex]12 x + 3x = 6 + 15[/tex]

[tex]15x = 21[/tex]

[tex]x = \frac{21}{15} = \frac{7}{5} [/tex]

Answer:

its D

Step-by-step explanation:

i got it wrong, thank me latter

The projected sales after 2 years will be $389,350 which is the correct answer would be option (D).

The percentage is defined as a ratio expressed as a fraction of 100.

Last year's store had total sales of $367,000.

The sales are to increase by 3% per year for the next 2 years.

To determine the projected sales in 2 years

The projected sales in next year = 3% of $367,000 + $367,000

The projected sales in next year = (3/100) × 367,000 + 367,000

The projected sales in next year = 11,010 + 367,000

The projected sales in next year = $378,010

The projected sales after 2 year = 3% of $378,010 + $378,010

The projected sales after 2 year = (3/100) × 378,010 + 378,010

The projected sales after 2 years = 11,340 + 378,010

The projected sales after 2 years = $389,350

Thus, the projected sales after 2 years will be $389,350.

Learn more about percentages here:

brainly.com/question/24159063

#SPJ2

Answer:

(x^2 + 3x - 12)/(x^3 + 5x^2 - 29x - 105)

Step-by-step explanation:

(x/(x^2 - 2x - 15) ) - (4/(x^2 + 2x - 35)) =

(x/((x-5)(x+3))) - (4/((x-5)(x+7))) =

((x * (x+7)) - (4 * (x+3)))/((x-5)(x+3)(x+7)) =

(x^2 + 7x - 4x - 12)/(x^3 + 5x^2 - 29x - 105) =

(x^2 + 3x - 12)/(x^3 + 5x^2 - 29x - 105)

Answer:

the Answer is D: x^2+3x-12/(x+3)(x-5)(x+7)

Step-by-step explanation:

Edge2020 ;D

Answer:

Step-by-step explanation:

Answer:

The volume of the smaller box is 900cm³

Step-by-step explanation:

Given:

larger box dimensions: 24cm by 10cm by 30cm

dimension of smaller box: 1/2 of larger box:

12cm by 5cm by 15cm

Volume of smaller box: Length×Width×Height

=12cm×5cm×15cm

=900cm³

Step-by-step explanation:

The given equation is 12x2+4kx+3=0

Here, a=12,b=4k,c=3

∴D=b2−4ac=(4k)2−4×12×3=16k2−144

The given equation will have real and equal roots, if

D=0⇒16k2−144=0⇒k2=9⇒k=±3

hope it helps

Answer:

rounded to what tho? nearest tenth? nearest hundreth?

Answer:

158 m²

Step-by-step explanation:

Get the area of all the faces, then add them

2(8 x 3) = 48

2(3 x 5) = 30

2(8 x 5) = 80

48 + 30 + 80 = 158

Answer:

1 2 3

Step-by-step explanation:

Answer:

[tex]xlog__{2}6[/tex]

Step-by-step explanation:

In logarithmic functions, if we have an exponent say the [tex]x[/tex] in [tex]6^x[/tex], we can "pull it down" from the power and multiply it next to the log.

Answer:

  match your blanks to the solution below

Step-by-step explanation:

The multiplication of an integer and a fraction has you multiply the integer by the numerator, then express the result over the denominator. At that point, you can reduce the fraction, if possible.

  [tex]4\times\dfrac{3}{4}=4\times\left(3\times\dfrac{1}{4}\right)\\\\=(4\times3)\times\dfrac{1}{4}\\\\=12\times\dfrac{1}{4}=\dfrac{12}{4}=3[/tex]

__

Additional comment

Because multiplication is commutative and associative, this can be done in a way that is a little simpler.

  [tex]4\times\dfrac{3}{4}=4\times\left(3\times\dfrac{1}{4}\right)\\\\=3\times\left(4\times\dfrac{1}{4}\right)\\\\=3\times\dfrac{4}{4}=3\times1=3[/tex]

Answer:

$120000

Step-by-step explanation:

1000 X 145 = 145000

1000 X 265 = 265000

$265000 - $145000 = 120000

Answer:

It has the same sign as the correlation coefficient r

14.38 + 31.73 = 46.11.

Answer:

46.11

Step-by-step explanation:

Add then drop the decimal

Answer:

18n+p-6

Step-by-step explanation:

you combine 12 and  6, then put the exponents in order

Hey there!

Like terms are "from the same family"

Let me clarify.

For example. we have an expression "2t+12h-6h"

In this case, 12h and -6h are like terms and 2t and 12h are not like terms.

Here's another example:

r+a-y+4+9-1

The like terms are:

4, 9, and -1

Now that we know what like terms are, let's identify the like terms in the given expression.

The expression is:

[tex]\bold{12n-6+p+6n}[/tex]

What are the like terms?

That's right, 12n and 6n:

[tex]\bold{12n+6n-6+p}[/tex]

[tex]\bold{18n-6+p}[/tex]

Hence, the answer is

[tex]\boxed{\boxed{\bold{18n-6+p}}}[/tex]

Hope everything is clear.

Let me know if you have any other questions; if so, please comment.

#LearningDoesn'tEnd

#LearningIsFun

[tex]\rule{250}{2}[/tex]

answer is c

Step-by-step explanation:

because I don't know

Answer:

I am back in my own country

Answer:

Step-by-step explanation:

Calculate the slope:

[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

Let m₁ and m₂ are the slopes of AB and CD.

Then

if m₁ = m₂ → lines are parallel

if m₁ · m₂ = -1 → lines are perpendicular

[tex]A(0;\ -4);\ B(-1;\ -7)\\\\m_{AB}=\dfrac{-7-(-4)}{-1-0}=\dfrac{-7+4}{-1}=\dfrac{-3}{-1}=3\\\\C(3;\ 0);\ D(-3;\ 2)\\\\m_{CD}=\dfrac{2-0}{-3-3}=\dfrac{2}{-6}=-\dfrac{2:2}{6:2}=-\dfrac{1}{3}[/tex]

[tex]m_{AB}\neq m_{CD}[/tex] - no parallel

[tex]m_{AB}\cdot m_{CD}=3\cdot\left(-\dfrac{1}{3}\right)=-\dfrac{3}{3}=-1[/tex] - perpendicular

Answer:

yes i can

Step-by-step explanation:

adding fractions you only add the numerator numbers, the denominator numbers stay the same, subtracting fractions you just subtract the numerator as the denominator stays the same, while multiplying you multiply both numerator and denominator

Answer:

addition and subtraction is possible when denominator are same so to make denometor same multiplication is use on both numerator and denominator

Step-by-step explanation:

for example,

5/10+2/5

now we can't add those numbers so

multiply on both on numerator denominator by same number to make denominator same.

look

5*1/10*1 + 2*2/5*2

5/10+4/10.

(addition is possible bcz denominator are same)

(5+4)/10

9/10 is answer