Write the sum using summation notation, assuming the suggested pattern continues. -3+6+15+24+...+132

Step-by-step explanation:

hello

2×12*2 (12-5)/10

24*2 (7)/10

576×7/10

4032/10

403,2

Answer:

Answer:

4,3 difference

Step-by-step explanation:

|-5,-5|=5,5

|-9,-2|=9,2

9-5=4

5-2=3

4,3 difference

Answer:

It took Riley 9 hours to clean the garage.

Step-by-step explanation:

With the information provided, you can say that the amount Riley earns for cleaning the garage is equal to the price per hour for the number of hours it takes to clean the garage, which can be express as:

x=4.25y, where:

x is the amount Riley earns for cleaning the garage

y is the number of hours it takes to clean the garage

Now, you can replace x with $38.25 that is the amount that Riley earned and you can solve for y to find how long it took her to clean the garage:

38.25=4.25y

y=38.25/4.25

x=9

According to this, the answer is that it took Riley 9 hours to clean the garage.

Answer:

x=9                   x=-1

Step-by-step explanation:

2(x-4)^2=50

Divide each side by 2

2/2(x-4)^2=50/2

(x-4)^2=25

Take the square root of each side

sqrt((x-4)^2)=sqrt(25)

x-4 = ±5

x-4 =5            x-4 = -5

Add 4 to each side

x-4+4=5+4    x-4+4 = -5+4

Answer:

A

Step-by-step explanation:

can I have Brainliest if right

Answer:

12 [tex]\frac{1}{2}[/tex]

Step-by-step explanation:

Put 5 in fraction form ( [tex]\frac{5}{1}[/tex] ) and multiply it by [tex]\frac{5}{2}[/tex]

[tex]\frac{5}{1}[/tex]×[tex]\frac{5}{2}[/tex] = [tex]\frac{25}{2}[/tex]   now simplify  to 12 [tex]\frac{1}{2}[/tex]

Answer:

I like him too.

Step-by-step explanation:

Answer:

95 cm^2

Step-by-step explanation:

perimeter(p)=39cm

L=3x-1

B=2x+3

Now,

p=2(l+b)

39=2(3x-1+2x+3)

39=6x-2+4x+6

39=10x+4

39-4=10x

x=35/10

x=3.5

Putting the value of x

L=3x-1; =3×3.5-1; =10.5-1; =9.5cm

B =2x+3; =2×3.5+3; =7+3; =10cm

Again,

A= L×B

=9.5×10

=95cm^2

Answer:

v = ~122.23 m/s

Step-by-step explanation:

180(2.8) + 65(3.5) + 200 = 931.5

931.5/(2.8 + 3.5 + 2) = 122.2289 ≈ 122.23 = va

Answer:

72 cm²

Step-by-step explanation:

Area of a ∆ = 1/2 × b × h

b = 12 cm

h = 12 cm

Area = 1/2 × 12 × 12

= 1/2 × 144

= 72 cm²

Answer:

0

Step-by-step explanation:

there are no more pencils that are niether blue or red

Answer:

B

Step-by-step explanation:

m<1 = 47

m<2= 34

Answer:

B

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

122° is an exterior angle to both triangles , then

∠ 1 + 75° = 122° ( subtract 75° from both sides )

∠ 1 = 47°

and

∠ 2 + 88° = 122° ( subtract 88° from both sides )

∠ 2 = 34°

Answer:

Ariana Grande 100%

Step-by-step explanation:

Answer:

Ariana

Step-by-step explanation:

Answer:

THe pattern switches to negative then positive

-4,4

Step-by-step explanation:

Answer:

(-18,9)

Step-by-step explanation (work shown in picture attached):

1) The first step in solving by substitution is to isolate the y-term in one of the equations if it is not already isolated. Isolate y in the first equation by dividing both sides by -2. This leaves us with the equation [tex]y = \frac{-x}{2}[/tex]

2) Now, substitute [tex]\frac{-x}{2}[/tex] for the y in the second equation. Simplify and isolate x. (You can multiply everything by -2 to get rid of the fraction.) This leaves us with x = -18.

3) We've found the x-value of the solution, -18. Now, substitute -18 for x back into one of the original equations (I chose the first one because it was simple) and isolate y. This gives us y = 9. Thus, in point form, the answer is (-18,9).

Answer:

first option

Step-by-step explanation:

A perfect square trinomial in the list is

x² + 20x + 100

= (x + 10)(x + 10)

= (x + 10)² ← a perfect square

Answer: 9 ( 2 terms)

10 ( i think it is C)

Step-by-step explanation:

#10 c sounds smart out of all the choices

Answer:

50% are boys

Step-by-step explanation:

Total number of kids: 18+15=33

Percent of boys: 15/33=0.4545 repeating

0.4545 rounded to tenth: 0.5

0.5 to percent: 50%

8*22 = 22*8

Hope this helps!

Answer:

Step-by-step explanation:

53-24=29 books purchased

Answer:

Let "x" be the number of books that Joan bought at the yard sale

24+x=53

x=29

Joan bought 29 books at the yard sale.

Let me know if this helps!

Answer:

the answer  is c

Step-by-step explanation:

if right pls give brainleist

Answer:

35/5=7 if thats the question?

Step-by-step explanation:

Answer:

she can play 7 games

Step-by-step explanation:

because of you take 35 and divide it by 5you get 7

Answer:

6 * 10^2

Step-by-step explanation:

Simplify : (4.2×10^7)÷(7×10^4)

(4.2 × 10^7) / (7 × 10^4)

From indices : 10^a ÷ 10^b = 10^(a - b)

(4.2 / 7) * 10^(7-4)

0.6 * 10^3

= 6 * 10^2

Hence, (4.2×10^7)÷(7×10^4) = 6 * 10^2

Answer: 720

Step-by-step explanation:

From the question, we are informed that cthe researches counted 400 turtles, of which 20 were marked. This implies that 20/400 = 1/20 were marked.

If the researchers wanted to track the reptile population around a lake, and the researchers marked 36 turtles, the estimate of the total population will then be:

1/20 × x = 36

x/20 = 36

x = 20 × 36

x = 720

The turtle population is 720

Answer:313.1

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

1600/800=2 hope it helps

Answer:

i can't see the picture!!!

Step-by-step explanation: