Choose the equation with the correct grouping symbols.

A. 45 + 45 ÷ (3 ÷ 3) = 20

B. 45 + [45 ÷ (3 ÷ 3)] = 20

C. [45 + (45 ÷ 3)] ÷ 3 = 20

D. 45 + (45 + 3 ÷ 3) = 20

**Answer:**

C

**Step-by-step explanation:**

(45+(15))/3=20

pleaseeeeeeeeeeeeeeeee solve this

**Answer:**

360 degrees

**Step-by-step explanation:**

We know that the sum of all the (ordered) exterior angles of any polygon is 360 degrees. As shown in the figure that, x,y and z recognise themselves as the exterior angles of the given triangles, their sum will be 360 degrees as well.

If ∠1 and ∠2 are complementary, m∠1 = (8x-6)°, and m∠2 = (14x+8)°

URGENT PLEASE HELP

Answer:

D

Step-by-step explanation:

Mr. Torres took his students to the dolphin show. Each row in the stadium had 9 seats. One adult sat at each end of a row, and each group of 3 students was seated between 2 adults. Mr. Torres sat by himself. How many adults were there? gr4ch02l09pg08451 There were adults including Mr. Torres.

**Answer:**

There were 4 adults; including Mr. Torres

**Step-by-step explanation:**

- Each row in the stadium had 9 seats

- Mr. Torres sat by himself; he sat on a row with nobody else (no students, no adults)

- The arrangement of the students and the adults who sat with them on same row is: **A S S S A S S S A**

** 1 2 3 4 5 6 7 8 9**

since 1 adult sat at each end of a/the row and each group of 3 students was seated between 2 adults.

So the total number of adults that were present = 3 + 1 = 4

How many 3/20 inch lengths are in 5 2/5 inches?

**Answer:**

0.81

**Step-by-step explanation:**

Raymond uses the Venmo

app to transfer money to

his friends. He had $6.50.

He gave $2.95 to Theresa

and received $1.26 from

Peyton. How much money

does he have now?

**Answer:**

2.29

**Step-by-step explanation:**

2.95 plus 1.26 is 4.21, and 6.50 minus 4.21 is 2.29.

how many triangles in the figure?

26

25

24

27

I keep getting 22 triangles

PLEASE HELP!!! IF YOU GIT IT RIGHT I WILL GIVE YOU 90 BRANLY POINTS !!! Which of the following equations is not a proportion? 14/7 = 7/3.5, 1.5/3 = 3/9, 22/33 = 4/6, 2/3 = 142/213

**Answer:**

1.5/3=3/9

**Step-by-step explanation:**

1.5/3=1/2 when 3/9=1/3

I hope this helps :)

**Answer:**

1.5/3 = 3/9 is not a proportion

**Step-by-step explanation:**

1.5/3 = 3/9

1.5 divide by 3 is 1/2 but 3 divide by 9 is 1/3 which makes it not proportional

Solving each proportions 10/8=n/10

**Answer:**

n=12.5

**Step-by-step explanation:**

10/8=n/10

multiply the denominator and numerators 10 ad 10=100 divide by 8=12.5

y=3x y=18 solve for x

**Answer:**

**6=x**

**Step-by-step explanation:**

y= 18; y= 3x

18=3x

18/3 = 3x/3

**6=x**

**Hope this helps!**

X=6 because if you are trying to get the answer to 18 then you would do 18=3x and 18 decided by 3 is 6. And 6*3=18

How can you graphically tell if a quadratic equation will have a complex solution?

**Answer:**

If it does not cross the x axis.

**Step-by-step explanation:**

If the quadratic equation does not cross the x axis (or more specifically, if the quadratic is an *upward opening* parabola and the vertex is *above* the x axis, or if the quadratic is a *downward opening* parabola and the vertex is *below *the x axis), it will have no real solution

The fundamental theorem of algebra says that quadratics must have 2 solutions, so the solutions must be imaginary.

if the equation doesn’t cross the X-axis

Divide n by 5 then add 6

**Answer:**

n+30/5

**Step-by-step explanation:**

Simplify n/5

n/5+6

Rewrite the whole as an equivalent fraction

2.1 Add an integer to a fraction

Rewrite the whole as a fraction using 5 as the denominator: 6= 6/1=6×5/5

Equivalent fraction: the fraction thus generated looks different but has the same value as everything.

2.2 sum of the two equivalent fractions add two equivalent fractions that now have a common denominator

Combine the numerators, place the sum or difference over the common denominator, and then reduce to the lowest terms of possible:

n+6×5/5=n+30/5

Choose the correct written expression for: 25 – (3 x 4).

**Answer:**

13

**Step-by-step explanation:**

**Answer:**

25 minus the product of 3 and 4.

**Step-by-step explanation:**

PEMDAS

and... I just took the test and it was correct answer.

Pls Help me. I will mark brainlist.

**Answer:**

The second answer

**Step-by-step explanation:**

Because if you subtract a negative from an equation you get positive (two negatives make a positive)

Which statement is true about the transformation?

**An**

**Step-by-step explanation:**

**Answer:**

**Step-by-step explanation:**

**Which statement is true about the transformation? It is isometric because not all side lengths and angle measures remained the same. It is isometric because all side lengths and angle measures remained the same. It is not isometric because not all side lengths and angle measures remained the same.**

A scientist studied bacteria.

She placed 4 bacteria in a dish.

The population of bacteria triples every 12 hours

Which equation can be used to determine the number of bacteria, y, present after x days?

O y = 4(3)x

O y=4(6)x

O y = 4(3) 2x

O y = 4(6) 2x

**Answer:**

the answer to the question is A

An **equation** is formed of two equal **expressions. **The **equation **can be used to **determine **the number of **bacteria**, y, **present **after x days is** y = 4(3)²ˣ.**

An **equation** is formed when two equal **expressions **are equated **together **with the help of an **equal sign '='.**

**Scientists **placed **4 bacteria** in a dish. The **population **of **bacteria **triples every** 12 hours. **Therefore, the **equation **that can be used to **determine **the number of **bacteria**, y, present after **x days are:**

y = 4(3)²ˣ

Hence, The **equation **can be used to **determine **the number of **bacteria**, y, **present **after x days is** y = 4(3)²ˣ.**

Learn more about** Equation:**

https://brainly.com/question/2263981

#SPJ2

PLEASE HELP ME !!!!!!!!!! O///O

Write an equation that has a slope of 4 and a y-intercept of (0,1).

Answer:

y=4x+1

Step-by-step explanation:

I’m guessing the equation needed to be in the y=Mx+b form. If so, m is your slope and b is your y-intercept.

**Answer:**

y - 1 = 4 ( x - 0 )

**Step-by-step explanation:**

point slope form

2. La suma de los cuadrados de dos números reales pares consecutivos es 52

Encuentra los números

**Answer: **±4 y ±6

**Step-by-step explanation:**

Algunas definiciones:

Sea N un numero real.

El cuadrado de un numero es:

N^2.

Ahora, nos dicen que N es par, entonces podemos escribir:

N = 2*n

donde n es un numero entero.

Y el par consecutivo a N, va a ser M = N + 2.

M = 2*n + 2.

Entonces:

"La suma de los cuadrados de dos números reales pares consecutivos es 52"

(2n)^2 + (2n + 2)^2 = 52

Tenemos que resolver esto para n.

4n^2 + 4n^2 + 8n + 4 = 52

Entonces tenemos una ecuación cuadrática:

8*n^2 + 8n + 4 - 52 = 0

8*n^2 + 8n - 48 = 0

Antes de usar la ecuación de Bhaskara, dividamos todos los coeficientes por un factor común, en este caso 8 es un factor común:

(8*n^2 + 4n - 48)/8 = n^2 + n - 6 = 0.

Ahora resolvamos esto para n, las dos soluciones son

[tex]n = \frac{-1 +-\sqrt{1^2 - 4*1*-6} }{1*2} = \frac{-1 +- 5 }{2}[/tex]

Entonces las dos soluciones son:

n = (-1 - 5)/2 = -3

n = (-1 + 5)/2 = 2

Entonces, si tomamos la primer solucion, los numeros consecutivos son:

N = 2*-3 = -6

M = N + 2 = -4

Si tomamos la segunda solucion, n = 2.

N = 2*2 = 4.

M = N + 2 = 6.

Entonces podemos concluir que las soluciones son:

±4 y ±6

find the value of x - PLEASE HELP

I need to show my work -

Thank you!!

**Answer:**

360=297+(x-36)+25

360=297+25-36+x

360=286+x

360-286=x

74=x

**Answer:**

x = 74 degree

**Step-by-step explanation:**

All those angles must add up to 360 degrees:

360 degrees = (297 + x - 36 + 25) deg, or

360 = 297 - 36 + 25 + x, or

x = 74 degrees

BRAINLIST!!!!!!!!!

which one is a function???

**Answer: C**

i hope this helps

Vaness’s team won their softball game and scored sixty-three points total. If Vanessa scored fifteen of the points and everyone else scored six points each, how many players were on her team?

8. 63-15=48 48 divided by 6=6

Simplify 9 to the 2nd power\ 9 to the 7th power

**Answer:**

9^2/9^7 = 9^-5

**Step-by-step explanation:**

It cost Samantha $4.23 to send 47 text messages. How much does each text cost to send?

**Answer:**

456

**Step-by-step explanation:**

**Answer:**

i think its 0.09

**Step-by-step explanation:**

Anand needs to hire a plumber. He's considering a plumber that charges an initial fee of \$65$65dollar sign, 65 along with an hourly rate of \$28$28dollar sign, 28. The plumber only charges for a whole number of hours. Anand would like to spend no more than \$250$250dollar sign, 250, and he wonders how many hours of work he can afford. Let HHH represent the whole number of hours that the plumber works.

**Answer:**

**Step-by-step explanation:**

Let H represent the whole number of hours that the plumber works.

given that the fixed cost is $65

and the hourly cost is $28

also given that Anand has a total of $250 with him

the total cost can be expressed in terms of the number of hours H as

250=65+28H

we can now solve for H

250-65=28H

185=28H

divide both sides by 28

H=185/28

H=6.60714285714

*"The plumber only charges for a whole number of hours."*

**So the number of hours Anand can afford is 6hours**

**Answer:**

Anand can afford is 6hours

**Step-by-step explanation:**

Let H represent the whole number of hours that the plumber works.

given that the fixed cost is $65

and the hourly cost is $28

also given that Anand has a total of $250 with him

the total cost can be expressed in terms of the number of hours H as

250=65+28H

we can now solve for H

250-65=28H

185=28H

divide both sides by 28

H=185/28

H=6.60714285714

"The plumber only charges for a whole number of hours."

So the number of hours Anand can afford is 6hours

Evaluate the following expression when x = -1, y = 2, z = -3, and

w = 4.

x² - y²

**Answer:**

-3

**Step-by-step explanation:**

-1*-1=1

2*2=4

1-4

=-3

What should you add to this problem?

(2x^3 + 5x^2 + 9) / (x + 3)

A) 0x^4

B) 0x^2

C) 0x^3

D) 0x

I’m gonna guess and say B

what’s the quotient of -21/-3?

**Answer:**

7

**Step-by-step explanation:**

When dividing two negative numbers, the negatives cancel out, leaving you with simply 21/3. As you probably know, 21/3 is 7.

ITS SUPER EASY PLEASE HELP ITS DUE IN AN HOUR PLEASEEEEEEEEEEEEEEEEEEEEEE

**Answer:**

- 84

**Step-by-step explanation:**

I think answer to this question is -28

I hope it will be correct

simply the following 2m⁵×5m³×7m²

**Answer:**

[tex]2m^5\cdot 5m^3\cdot 7m^2=70\cdot m^{10}[/tex]

**Step-by-step explanation:**

Simplify the expression

[tex]2m^5\cdot 5m^3\cdot 7m^2[/tex]

Calculate the product of the coefficients:

2*5*7=70

Compute the product of the variables. Since they are all the same letter, sum their exponents:

[tex]m^5\cdot m^3\cdot m^2=m^{5+3+2}=m^{10}[/tex]

Combine the results:

[tex]\boxed{2m^5\cdot 5m^3\cdot 7m^2=70\cdot m^{10}}[/tex]

Help I need help on this question

**Answer:**

1/3 is the y intercept

**Step-by-step explanation:**

f(x) = -2/9x + 1/3

This is written in slope intercept form

y = mx+b where m is the slope and b is the y intercept

-2/9 is the slope and 1/3 is the y intercept

Victor runs 3 laps around the track every 5 minutes. How many laps does Victor run in 1 minute?

Answer:

Victor runs 0.6 of a lap in 1 minute

Step-by-step explanation:

From the question;

3 laps = 5 minutes

x laps = 1 minute

3 * 1 = 5 * x

3 = 5x

x = 3/5

x = 0.6

Victor runs 0.6 of a lap in a minute

2. Tamara has to go on a business trip. Including taxes, her round trip airfare is $400 and her room costs $150 per night. The cab fare from the airport to the hotel is $40. If Tamara stays for two nights, how much does the trip cost, not including the cost of food?
What is the z-score for Paula If she got 1400 on the SAT, the mean was 1100 and thestandard deviation was 275?
Etxuck327 Inc. sells a particular textbook for $39. Variable expenses are $28 per book. At the current volume of 49,000 books sold per year the company is just breaking even. Given these data, the annual fixed expenses associated with the textbook total:
An experiment consists of determining the speed of automobiles on a highway using a radar equipment. The random variable in this experiment is a:
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