Find the value of the expression x2−3x+7x+4 when x = 2.

Answers

Answer 1

Answer:

x=1/5 or 0.2

Step-by-step explanation:

Answer 2

Answer:

16

Step-by-step explanation:

distribute 2 in for the x and you would get 2^2-3(2)+7(2)+4

and you would get 4-6+14+4= 16


Related Questions

x1=4+x2=2 can someone tell me how do i do this?

Answers

Answer:

x3=4=2

Step-by-step explanation:

Add like terms. I believe that's what you're going for...

Hope this helped :)

five less than twelve times a number

Answers

Answer:

Five less than twelve times a number is represented by  12n - 5

Expressing word problems as Equations

Let the unknown nmber be represented as n

Such that twelve times the  number will be represented as 12 n

There fore Five less than twelve times the  number becomes 12n - 5

Determine the quadrant point

Answers

Answer:

I think b

Step-by-step explanation:

c) tan^2A - cot^2A = sec^2A (1 - cot^2A)


plzz help me...tomorrow there is opt math test in my school...If I fail then i have to leave opt classes and go to eco....our teacher only taught trigonometry and I was absent 2 3 days due to sickness...plzz help me​

Answers

Answer:

The steps are :

[tex] {tan}^{2} θ - {cot}^{2} θ = {sec}^{2} θ(1 - {cot}^{2} θ)[/tex]

[tex]RHS = {sec}^{2} θ(1 - {cot}^{2} θ)[/tex]

[tex]RHS = (1 + {tan}^{2} θ)(1 - \frac{1}{ {tan}^{2} θ} )[/tex]

[tex]RHS = (1 + {tan}^{2} θ)( \frac{ {tan}^{2}θ - 1}{ {tan}^{2} θ} )[/tex]

[tex]RHS = - \frac{(1 + {tan}^{2}θ)(1 - {tan}^{2} θ)}{ {tan}^{2} θ}[/tex]

[tex]RHS = - \frac{(1 - {tan}^{4} θ)}{ {tan}^{2} θ} [/tex]

[tex]RHS = \frac{ {tan}^{4} θ - 1}{ {tan}^{2}θ } [/tex]

[tex]RHS = {tan}^{2} θ - \frac{1}{ {tan}^{2}θ } [/tex]

[tex]RHS = {tan}^{2} θ - {cot}^{2} θ[/tex]

[tex]RHS = LHS (proven)[/tex]

Find the value of
(4/25) -1/2

Answers

[tex]\textsf{Hey there!}[/tex]

[tex]\mathsf{\dfrac{4}{25} - \dfrac{-1}{2}}[/tex]

[tex]\textsf{Cross\ multiply and you should see what the result comes}[/tex]

[tex]\mathsf{New\ equation: \dfrac{8}{50} + \dfrac{-25}{50}}[/tex]

SOLVE ABOVE/ BREAK IT DOWN TO MAKE IT EASIER TO SOLVE! [tex]\mathsf{\dfrac{8 + (-25)}{50}}[/tex]

[tex]\mathsf{8 - 25 = -17\leftarrow \text{\bf{{NUMERATOR}}}}[/tex]

[tex]\mathsf{50 + 0 = 50\leftarrow \text{\bf{DENOMINATOR}}}[/tex]

[tex]\boxed{\boxed{{\boxed{\textsf{Therefore, your answer is most likely: \boxed{\boxed{{\huge{\mathsf{\bf{\dfrac{-17}{50}}}}}}}}}}}}}\checkmark[/tex]

[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\dfrac{\frak{LoveYourselfFirst}}{:)}[/tex]

Terry has an investment account which compounds interest continuously at a rate of 1.4%. He puts $1600 in the account initially. After 3 years, how much money is in the account?

Answers

[tex]~~~~~~ \textit{Continuously Compounding Interest Earned Amount} \\\\ A=Pe^{rt}\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill & \$1600\\ r=rate\to 1.4\%\to \frac{1.4}{100}\dotfill &0.014\\ t=years\dotfill &3 \end{cases} \\\\\\ A=1600e^{0.014\cdot 3} \implies A \approx 1668.63[/tex]

What's 6804 rounded to the nearest hundred

Answers

Answer:

6800

Step-by-step explanation:

is this right yes or no?​

Answers

Answer:

As far as I can see, yes it is correct.

Use the equation y=3x+1 to complete the table and solve for the missing y values. Identify the ordered pairs from the table. Select all that apply.

(-2, -7)
(-1, -2)
(0, 1)
(1, 3)
(2, 7)

Answers

Answer:

(-2, -5)

(-1, -2)

(0, 1)

(1, 4)

(2, 7)

Step-by-step explanation:

Substitute x with each number and solve equation.

HELPPPPPPP ME PLEASEEEEEEEEEE ILL GIVE BRAINLEST

Answers

Answer:

The answer is 7

Step-by-step explanation:

The time is 0 because it wants the depth before the snow melts. -0.5 times 0 is zero plus seven is seven.

Will mark brainliest for whoever answers

Answers

The answer is B. Scatter plots cant plot qualitative variables aka capitals of countries.

Y = .75x = .75(16)=

Can someone plz help me out

Answers

.75(16)= 12
Hope that helps just multiply

Which is the mode of this data?
12, 19, 22, 17, 15, 18, 15, 14, 16​

Answers

Answer:

Sry but i hope u have great christmas and get all the gifts you wnated.

Step-by-step explanation:

it’s should be 15! tell me if i’m wrong please.

PLEASE HELP!!! WILL GIVE BRAIN I PROMISE!!!!

Answers

Answer: 6i

Step-by-step explanation:

Lisa's father is paying for a $20 meal. He has a 15% off coupon for the meal.
After the discount, a 7% sales tax is applied. What does Lisa's father pay for
the meal?
Plssss answer fast

Answers

$18.19................. hope it’s right!

Im not the brightest, because this is easy, I just overthink stuff :]
What does "how many times greater" mean in math? Like do you subtract, multiply, add, divide? Are there steps, I have to follow? Help lol

Answers

Answer:

multiplication

Step-by-step explanation:

cuz it says "times greater"

Answer:

It means how may times can the other variable fit into that variable, so you would divide.

- For example: Bob has 6 flowers in his basket, but Sally has only 2 flowers in her basket.

    Q: How many times greater is Bob's basket of flowers than Sally's?

    A: Bob's basket is 3 times greater than Sally's (bc 6/2 = 3, or 2 can fit into 6           three times)

**please mark brainliest!!

Whoever answers correctly will get Brainliest!

Answers

Answer:

B

Step-by-step explanation:

Write a linear function f with the values f(-1)=-3 and f(2)=6.

Answers

Answer:

y = 3x

Step-by-step explanation:

Equation of a Line

Suppose we know the line passes through points A(x1,y1) and B(x2,y2). The slope can be calculated with the equation:

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

The point-slope form of the equation of a line is:

y - k = m ( x - h )

Where m is the slope and (h,k) is a point through which the line passes.

We are given the following values of the function: f(-1)=-3 and f(2)=6. The points are (-1,-3) and (2,6). The slope is:

[tex]\displaystyle m=\frac{6+3}{2+1}=\frac{9}{3}=3[/tex]

Now find the equation of the line using the second point:

y - 6 = 3 ( x - 2 )

Operating:

y - 6 = 3x - 6

Simplifying:

y = 3x

53 decreased by twice Mai's score

Answers

Answer:

This expression can be written as 53-2m

Step-by-step explanation:

Sometimes it can help to reword the sentence...

2 times Mai's score is being subtracted from 53.

Use 'M' for Mai's score:

53-2m

Select the two descriptions that match the dilation

Answers

C and D

Hope this helps !

Algebra I Semester 1 Escam (SMS 20-21) 5 of 28
Which description best describes the function below?
I
11
5
1
2
4
-7
A The function is increasing.
B. The function's slope is -2.
C. The x-intercept of the function is (5,0).
D. The y-intercept of the function is (0,5).

Answers

Answer- D. The y-intercept of the function is (0,5)
Hope this is right. Have a great day!

6x square +11x-10
Factories ​

Answers

Answer:

(2x+5)(3x-2)

Step-by-step explanation:

6x²+11x-10

6x²+15x-4x-10

3x(2x+5)-2(2x+5)

(2x+5)(3x-2)

A book is marked down by 28 percent from an original price of $19.50. What is the new price?

Answers

Step-by-step explanation:

First find 28% of $19.50:

($19.50) / (100) × (28) = $5.46

Now minus the 285 from the original price:

($19.50) - ($5.46) = $14.04

The answer is $14.04

Hope it helped :)

Hi the new price is $14.04

The youth group at the church decided to plant geraniums and
daisies around the church grounds as a group project. Geraniums
in 6" pots cost $4 each and daisy plants cost $6 each. The youth
group spent $410 on 80 plants. How many geraniums and how many
daisy plants did the group buy?

Answers

Answer:

The youth group bought 35 geraniums and 45 daisy plants.

Step-by-step explanation:

We can solve this using a system of equations:

x + y = 80

4x + 6y = 410

X = Geraniums

Y = Daisies

First, let's solve for a variable in the first equation. I am going to solve for y in the first equation:

x + y = 80

y = -x + 80

Now that we have solved for y we can plug that back in to the 2nd equation:

4x + 6(-x + 80) = 410

4x - 6x + 480 = 410

-2x + 480 = 410

-2x = -70

x = 35

Now that we have found the amount of geraniums we can plug it back into the first equation and solve for y:

35 + y = 80

y = 45

Therefore the youth group bought 35 geraniums and 45 daisy plants.

Check:

(35) + (45) = 80

80 = 80

4(35) + 6(45) = 410

140 + 270 = 410

410 = 410

I hope this helps!!

- Kay :)

I'll give brainly pls help​

Answers

Yes, option c is correct

Answer:

I think the second one!

Step-by-step explanation:

Evaluate (Solve) the expression. 6+b when b=7​

Answers

Answer:

13

Step-by-step explanation:

Substitute 7 for b

6 + 7 = 13

Answer:

It's 13.

Step-by-step explanation:

6+7=13

Morgan throws a ball up into the air. The height of the ball above the ground, in feet, is modeled by the function h(t) = −16t 2 + 24t, where t represents the time, in seconds, since the ball was thrown. What is the appropriate domain for this situation?

Answers

Answer:

I will give you the link below to a PDF that one of my young friends made for someone who had this exact question.

Step-by-step explanation:

The appropriate domain for this situation is [tex]\{t : 0 \leq t \leq 1.5\ \& \: t \in \mathbb R \}[/tex] (that means t can be any real number and between 0 and 1.5 (both endpoints included)

What is domain and range of a function?

Domain is the set of values for which the given function is defined.

Range is the set of all values which the given function can output.

For this case, we have  only those values of 't' as appropriate value, which are from t = 0 till the time when ball hits the ground, since after that the height will be constantly 0, but the height function will give negative values which doesn't model the situation correctly.

Thus, those values of t for which the equation [tex]h(t) = -16t^2 + 24t[/tex] correctly models the real world situation are said to be appropriate values of domain of this function.

The time when the ball will reach the ground will be when the height will be 0, thus,:

[tex]0 = -16t^2 + 24t\\2t^2 - 3t = 0\\(2t-3)(t) = 0\\t = 0, t = 3/2 = 1.5 \: \rm sec[/tex]

The height is 0 when ball starts going up(t=0), and when t = 1.5 the ball reaches ground.

Thus, the appropriate domain for modelling the situation is values of t in the interval [0, 1.5] (both endpoints are inclusive, as shown by big bracket).

Learn more about appropriate domain here:

https://brainly.com/question/2510516

Evaluate 5x – 2 when X = 3

Answers

Answer:

The answer is 13

Step-by-step explanation:

Answer:

13

Step-by-step explanation:

5(3)-2

15-2

13

Billie Elilish , who's/whose had several hit songs recently ,is one of my favorite singers

Answers

Answer: same.

Step-by-step explanation:

Answer:

same

Step-by-step explanation:

same

Patrick leaned a 30-foot ladder against the side of a building. The
base of the ladder is 17 feet from the base of the building. The top of
the ladder is 11 feet from the top of the building. How tall is the
building? Provide an answer accurate to the nearest tenth of a foot.

Answers

The distance between the bottom of the ladder and the ground's surface is 24.7 feet.

Given that a is the ground, b is the building, and c is the ladder.

Also the ground is perpendicular to the building, the ladder, the building, and the ground form a right triangle.

Therefore, the Pythagorean theorem can be applied as follows:

c² = a² + b²

According to the information in the problem, c is 30 feet, b is 17 feet, and we solve for a as follows:

(30 ft)² = a² + (17 ft)²

900 ft² = a² ₊ 289 ft²

900 ft² ₋ 289 ft² = a²

611 ft² = a²

a² = 611 ft²

a = √611 ft²

a = 24.71

rounding off to nearest tenth, so a = 24.7

Hence the bottom of the ladder is 24.7 feet far away from the base of the ground.

Learn more about Pythagorean problems here:

brainly.com/question/2437195

#SPJ9

Your question is incomplete. Please find the missing content here.

A 23-foot ladder is placed against a building. If the top of the ladder will lean against the building 17-feet high, how far away from the base of the building is the bottom of the ladder located?

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