What is 3a squared add 7 a

Answers

Answer 1
The answer is:  " 9a² + 7a " .
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Note:    (3a)² + 7a = (3a)*(3a) + 7a = 9a² + 7a .
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Related Questions

Estimate the intervals on which the derivative is positive and the intervals on which the derivative is negative. enter your answers to one decimal place.

Answers

Here is the general strategy for identifying whether a derivative is positive or negative. First Let f(x) be a function of x , continuous and differential on a given interval 'I'. f'(x) is positive if f(x) is increasing on 'I' . f'(x) is negative if f(x) is decreasing on 'I' .

si 8 litros de agua contiene 250 gramos de cal ¿que cantidad de agua le debemos agregar para que en cada lito exista 20 gramos de cal?

Answers

Aqui te mando la solucion para la problema, abre el foto.

Final Answer:

La cantidad de agua que se debe agregar para que haya 20 gramos de cal por litro es de aproximadamente 0.625 litros. Esto se calcula ajustando la proporción actual de 250 gramos de cal en 8 litros de agua. La nueva proporción será de 20 gramos de cal por litro.

Step-by-step explanation:

Para resolver este problema, podemos usar una regla de tres simple. La relación actual es de 250 gramos de cal por 8 litros de agua. Queremos saber cuántos gramos de cal habría en 1 litro de agua.

Primero, calculemos cuántos gramos de cal hay por litro de agua en la situación actual:

[tex]\( \frac{250 \, \text{gramos de cal}}{8 \, \text{litros de agua}} \)[/tex]

Ahora, queremos encontrar cuántos gramos de cal habría en 1 litro de agua, así que multiplicamos la cantidad actual por 1/8:

[tex]\( \frac{250 \, \text{gramos de cal}}{8 \, \text{litros de agua}} \times \frac{1 \, \text{litro de agua}}{8} \)[/tex]

Esto nos dará la cantidad de gramos de cal por litro de agua en la nueva situación. Ahora, queremos que esta cantidad sea de 20 gramos:

[tex]\( \frac{250 \, \text{gramos de cal}}{8 \, \text{litros de agua}} \times \frac{1 \, \text{litro de agua}}{8} = x \, \text{gramos de cal por litro} \)[/tex]

Queremos que ( x ) sea igual a 20 gramos:

[tex]\( x = 20 \, \text{gramos de cal por litro} \)[/tex]

Entonces, puedes resolver esta ecuación para encontrar cuántos litros de agua se necesitan:

[tex]\( \frac{250 \, \text{gramos de cal}}{8 \, \text{litros de agua}} \times \frac{1 \, \text{litro de agua}}{8} = 20 \, \text{gramos de cal por litro} \)[/tex]

Resolviendo esta ecuación, obtendrás la cantidad de litros de agua necesarios para lograr que haya 20 gramos de cal por litro.

3b-4/2 = c, solve for b

Answers

Greetings!

"Solve for b"...

[tex]3b-4/2 = c[/tex]
[tex]3b-2= c[/tex]\
Add to both sides.
[tex](3b-2)+2=(c)+2[/tex]
Simplify.
[tex]3b=c+2[/tex]
Divide both sides by 3.
[tex](3b)/3=(c+2)/3[/tex]
Simplify.
[tex]b=1/3c+2/3[/tex]

The answer would be: b=1/3c+2/3

Hope this helps.
-Benjamin

Answer:  The required solution for b is [tex]b=\dfrac{2c+4}{3}.[/tex]

Step-by-step explanation:  We are given to solve the following equation for b :

[tex]\dfrac{3b-4}{2}=c~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)[/tex]

To solve the given equation for b, we must take b on one side of the equation and all other terms on the other side.

From equation (i), we get

[tex]\dfrac{3b-4}{2}=c\\\\\Rightarrow 3b-4=2c\\\\\Rightarrow 3b=2c+4\\\\\Rightarrow b=\dfrac{2c+4}{3}.[/tex]

Thus, the required solution for b is [tex]b=\dfrac{2c+4}{3}.[/tex]

how do you solve 19=15w-4(3w-1)

Answers

remember, you can do anyting to an equation as long as you do it to both sides

19=15w-4(3w-1)
distribute
-4(3w-1)=-4(3w)-4(-1)=-12w+4

19=15w-12w+4
19=3w+4
minus 4 both sides
15=3w
divide both sides by 3
5=w
w=5
19 = 15w-4(3w-1)    > subtract 15w from both sides
19-15w = -4(3w-1)   > work out the -4(3w-1)
19-15w = -12w+4    > subtract 19 from both sides
-15w = -12w-15       > add 12w to both sides
-3w = -15                > divide by -3
w = 5

hope this helped and I hope I get brainliest answer bud :)

in 2008 565,650 americans died of all forms of cancer Assuming a population of 305 million what was the mortality rate in units per 100,000 people?

Answers

24256643 there was a big rate of change

Becca earns money mowing her neighbors' lawns.

The revenue for mowing x lawns is r(x) = 18x.
Becca's cost for gas and the mower rental is c(x) = 5x + 20.

Her profit from mowing x lawns is p(x) = (r – c)(x). What is p(x)?

Answers

p(x) = 18x - (5x + 20)
p(x) = 18x - 5x - 20
p(x) = 13x - 20 <===

Answer: [tex]p(x)= 13x-20[/tex]

Step-by-step explanation:

Given: The revenue for mowing x lawns is [tex]r(x) = 18x[/tex] .

Becca's cost for gas and the mower rental is c(x) = 5x + 20

The profit from mowing x lawns is given by :-

[tex]p(x)=(r-c)(x)[/tex]

The above  function can be written as

[tex]p(x)=(r-c)(x)=r(x)-c(x)\\\\\Rightarrow p(x)= 18x-(5x+20)\\\\\Rightarrow p(x)= 18x-5x-20\\\\\Rightarrow p(x)= 13x-20[/tex]

seven people meet and shake hands with one another how many handshakes occur

Answers

49 I am pretty sure!
the answer is 21 handshakes occur

Varia is studying abroad in Europe. She is required pay $3,500 (in US dollars) per year to the university, however, she must pay in euros. How many euros can Varia expect to pay per month to the university? (Round to the nearest whole euro.)

0.7306 euros = 1 US dollar

Answers

Answer:

213 euros per month

Step-by-step explanation:

1dollar = 0.7306euros

thus $3,500 dollars can be found by a rule of three

dollar             euro

1             ⇒  0.7306

3500     ⇒        x

we find x as follows:

[tex]x=\frac{0.7306*3500}{1} = 2,557.1[/tex] euros

She will pay 2,557.1  euros per year.

Dividing between the 12 months of the year:

[tex]\frac{2,557.1}{12}=213.1[/tex]

Rounding to the nearest whole euro she will pay 213 euros per month.

Answer:

A

Step-by-step explanation:

I just took the test

i need help please this is due in about 5 minutes

Answers

5x^2= 2205

Divide both sides by 5
x^2=441

Find the square root of both sides
x= 21

If θ is a Quadrant II angle and cosθ = -2/3 , then sinθ = _____.

Answers

See the attached picture.  If a point P(x, y) is on the terminal side of an angle theta.

[tex]\cos(\theta) = \frac{x}{r} [/tex]

In this case,  x = -2 and r = 3. Use the Pythagorean Theorem to find the value of y.

[tex]x^2 + y^2 =r^2 \\ 4+y^2=9 \\ y^2 = 5 \\ y=\sqrt{5} [/tex]

Note that you pick the positive square root for  y  because the point is in Quadrant II.

Now, [tex]\sin(\theta) = \frac{y}{r} = \frac{\sqrt{5}}{3} [/tex]
Final answer:

To solve for sinθ when θ is in Quadrant II and cosθ = -2/3, use the Pythagorean identity sin2θ + cos2θ = 1. Since sinθ will be positive in Quadrant II, after calculations, sinθ equals √5/3.

Explanation:

To find the sine value for an angle θ in Quadrant II, where the cosine of θ is given to be cosθ = -2/3, we can use the Pythagorean identity: sin2θ + cos2θ = 1. We already know that cosθ = -2/3, so we can solve for sinθ:

sin2θ = 1 - (cosθ)2sin2θ = 1 - (-2/3)2sin2θ = 1 - 4/9sin2θ = 5/9

Since we are in Quadrant II, where sine values are positive, we take the positive square root:

sinθ = √(5/9)sinθ = √5/3

So the value of sinθ when cosθ = -2/3 in Quadrant II is √5/3.

Write the taylor series for f(x)=sin(x) at x=π2

Answers

Try to see on Google for solutions like that

What is 25.691 rounded to the greatest place

Answers

The greatest place value is the tens spot which 2 is in the tens spot so we need to round up since 5 is next to the 2. The answer would be 30

you buy 3 tickets for $48 total for the jazz concert on Friday night. Your friend buys 2 tickets for $36 total for the jazz concert on Saturday night. Your brother collected $96 from his friends to buy 6 tickets. Which night can they go to the concert? Did they buy the less expensive tickets? Explain.

Answers

I bought = 3 tickets for $48 for Friday So, 48/3 = $16/ticket My friend bought = 2 tickets for $36 for Saturday So, 36/2 = $18/per ticket My brother collected $96 to buy 6 tickets. So, 96/6 = $16/ticket They can go to concert on Friday as on Friday ticket is $16 as my brother collected $96 from 6 people = $16 per person. Yes, they buy the less expensive ticket, as for Saturday ticket price is $18 and they bought ticket for Friday which is priced at $16.

48:3= 16  36:2=18  96:6= 16

1365=x+(1×x×5%)
Please show all steps on how you got the answer

Answers

[tex]\bf 1365=x+(1\cdot x\cdot 5\%)\\\\ -------------------------------\\\\ whatever\%~of~anything\implies \cfrac{whatever}{100}\cdot anything\\\\ -------------------------------\\\\[/tex]

[tex]\bf 1365=x+\left( 1\cdot x\cdot \frac{5}{100} \right)\implies 1365=x+\left(x\cdot \frac{5}{100} \right) \\\\\\ 1365=x+\left(\frac{x\cdot 5}{100} \right)\implies 1365=x+\cfrac{5x}{100}\impliedby \textit{using LCD of \underline{100}} \\\\\\ 1365=\cfrac{100x+5x}{100}\implies 1365\cdot 100=100x+5x \\\\\\ 136500=105x \implies \cfrac{136500}{105}=x\implies 1300=x[/tex]

While in europe, if you drive 113 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 39.0 mi/gal ? assume that 1euro=1.26dollars?

Answers

First let's find total km so 113km per day for 7 days is 791 km. Then we change 791km to miles = 491.211 miles. Since the car is 39 miles per gallon we divide 491.211/39= 12.60 gallons. We change gallons to liters so we have 12.60gal x 3.785L= 47.67 L at 1.10 euros per liter is 47.67 x 1.10 =52.44 euros. Finally, change euros to dollars so we get 52.44 x 1.26 = 66.07 dollars.
Final answer:


The total cost for gas when driving 113 km per day in Europe for a week, with gas at 1.10 euros per liter and a mileage of 39.0 mi/gal, would be approximately $66.19 after converting euros to dollars at the given exchange rate of 1 euro = 1.26 dollars.

Explanation:

To calculate the cost of gas for driving 113 km per day over a week in Europe, where gas costs 1.10 euros per liter and the car has a gas mileage of 39.0 mi/gal, a series of conversions and calculations need to be done:

Convert the daily distance driven from kilometers to miles.Calculate the amount of gasoline used per day based on the converted distance and the car's gas mileage.Convert the gasoline amount from gallons to liters.Multiply the daily cost by seven to get the weekly cost.Convert the cost from euros to dollars.

Step-by-step this would be:

113 km/day * 0.621371 = 70.215 km/day (in miles)70.215 mi/day / 39.0 mi/gal = 1.8 gal/day (gasoline used each day)1.8 gal/day * 3.79 L/gal = 6.822 L/day (daily liters)6.822 L/day * 1.10 euros/L = 7.504 euros/day (daily cost)7.504 euros/day * 7 days = 52.528 euros/week (weekly cost)52.528 euros * 1.26 dollars/euro = 66.185 dollars/week (total cost in dollars)

Therefore, if the car is driven 113 km per day in Europe, the total cost for gas over one week, given the parameters listed, would be approximately $66.19 when converted into dollars.

Suppose y varies directly as x, and y=16 when x=8. Find y when x=16

Answers

We can make a proportion here, 8/16, where the proportion is x/y. We can make another proportion that says 16/y, and y would be 32, because twice the number of x is y.

Find four different odd numbers whose sum is 18. (Enter your answers as a comma-separated list.)

Answers

Thanks for the question!

9 + 9, 5 + 13, 7 + 11, 3 + 15

Hope this helps!
3, 5, 9, and 7 are four

(b)It takes 30 pounds of seed to completely plant a 5 -acre field. How many pounds of seed are needed per acre?

Answers

To find the answer to this, you'll need to divide the 30 pounds of seed by the five acres.

30/5 = 6

6 pounds of seed are needed per acre. 

Hope this helps!! :)

The difference between five and twice a number, x, is one.

Answers

" the difference " means subtract

the difference between 5 and twice a number x is 1

5 - 2x = 1 <== ur equation
-2x = 1 - 5
-2x = - 4
x = -4/-2
x = 2 <== ur solution
2x -5 = 1
2x = 5+1
2x = 6

2x/2 = 6/2

x = 3

hope this helps

Determine the intervals on which the polynomial is entirely negative and those on which it is entirely positive. (Enter your answers using interval notation. Enter EMPTY or ∅ for the empty set.)
−x^2 + 6x − 10
I don't understand how to factor this, as as such, I can't figure out how to answer the question. Please help!

Answers

This is a parabola that opens downward.
Remember that the axis of symmetry is located at x=-b/(2a).
So the vertex is at (3,-1)
So functions slope is positive or increasing on (-co, 3] and decreasing on [3,co).

Answer with explanation:

The function for which we have to find , the intervals on which the polynomial is entirely negative and those on which it is entirely positive.

 f(x)= -x²+6 x -10

 If you will find the root of the function, there is no real root.

To find the root we will use Discriminant formula

For a Quadratic function, ax²+b x+c=0,

 [tex]x=\frac{-b+\sqrt{D}}{2a}\\\\D=b^2-4ac\\\\x=\frac{-6\pm \sqrt{6^2-4 *(-1)*(-10)}}{2*(-1)}\\\\x=\frac{-6\pm\sqrt{-4}}{-2}[/tex]

→So,there is no interval in which  the polynomial is entirely negative and those on which it is entirely positive, which can be represented in interval notation using Ф.

   [tex]f(x)= -(x^2-6x+10)\\\\= - [(x-3)^2-9+10]\\\\=-(x-3)^2-1[/tex]

For, any value of x,the value of f(x) will be always Negative.

To find the vertex, put ,x-3=0

 x=3

And, by putting , x= 3 ,in the equation we get

y = -1

So,Vertex = (3, -1)

⇒If you will try to find the intervals in which the function is increasing , means the curve is moving up is from (-∞, 3) and the intervals in which the function is decreasing , means the curve is moving downward is from , (3, ∞).

9.1 in; 1 significant digit

Answers

1.454


Im pretty sure hope i helped

9.1 has 2 significant digits so to have 1 you need to round it to a whole number,

in 1 significant digit would be 9

Round 992,449 to the nearest hundred thousand

Answers

pretty sure is is 1,000,000 i think hope i helped.
992!
Because its over the 9 so its 992

what is the product? a-3/7 divided by 3-a/21

Answers

Final answer:

To find the product of the expression (a-3/7) divided by (3-a/21), multiply (a-3/7) by the reciprocal of (3-a/21), yielding the simplified expression ((21a - 9)/ (21a - 7)) valid for all values of 'a' except when 'a' equals 8/3.

Explanation:

The student is asking for the product of the expression (a-3/7) divided by (3-a/21). To simplify this expression, we need to apply the division of fractions rule, which states that to divide by a fraction, you multiply by its reciprocal. The reciprocal of (3-a/21) is (21/(3a-1)). So our new expression is (a-3/7) × (21/(3a-1)).

We can multiply the numerators and denominators separately: (a-3/7) × 21 = (a× 21 - 3× 3) and 7 × (3a-1) = 21a-7. Simplified, we get ((21a - 9)/ (21a - 7)) as the product.

However, we should also check if the expression is defined for all values of 'a' as there may be values for which the denominator becomes zero. Specifically, we need 'a' to not be such that (3a-1) equals 7, which simplifies to a = 8/3. So for all values of 'a' except when 'a' equals 8/3, the product of the given expression is ((21a - 9)/ (21a - 7)).

jeremy wants to buy a new computer. the saleswoman says that he can make a down payment and then pay for the computer in installments, heres a formula for this scenario: x=t- yz, x=amount down, y=money each month, z=number of months, t=total price, rewrite the formula to solve fore the amount of money jeremy must pay each month

Answers

Since y is the money each month, we have to solve for that. To do that, we can first add yz to both sides and subtract x from both, resulting in yz=t-x. Next, we can divide both sides by z to get y=(t-x)/z

29+d=54;24,25,26 what

Answers

25 is the anwser you're looking for

A Builder is trying to level out some ground with a front end loader. He picks up some excess dirt at (9,16) and then maneuvers through the job site along the vectors (-6,0) ,(2,5) ,(8,10) to get to the spot to unload the dirt. Find the coordinates of the unloading point. Find a single vector from the loading point to the unloading point.

Answers

The starting point is O (9, 16)

A move along the vector (-6, 0) lands at
(9-6, 16+0) = (3, 16)
A move along the vector (2, 5) lands at
(3+2, 16+5) = (5, 21).
A move along the vector (8, 10) lands at
(5+8, 21+10) = (13, 31).

The unloading point is Q (13, 31).

A vector from P to Q is
(13, 31) - (9,16) = (4, 15)

The graph below illustrates the travel scenario.

Answer:
The unloading point has coordinates (13, 31).
The vector from the loading point to the unloading point is (4, 15)

Eric has 672 oranges to crate equally into 7 containers. How many oranges are in each container?

Answers

96 oranges per basket Hope this helps

Answer:

96

Step-by-step explanation:

All you gotta do is multiply 7 by a high number like say 80 you wont get 672 just keep on multiplying it by higher numbers till you get 672 i hope i helped

Isaac deposits $1,500 in a savings account that earns 5% per year. How much interest will the money have earned at the end of 4 years?

Answers

Use the Simple Interest Formula, I = prt where I is the amount of interest, p is the principal (amount invested), r is the interest rate as a decimal, and t is the time in years. I = 1500(.05)(4) I = 300 Isaac's investment earns $300 interest.

find the missing value. 90 is what percent of 360

Answers

90 is 25% of 360 comment if you need me to explain further :)
90/360 = .25
25%

Hope this helps!

6×[(5×7)-(7+8)] Please help me i beg of you please

Answers

6x(35-15) is 6x20 so the answer is 120
6x[35-15]
6x20
120 
youre welcome bro
good luck
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