1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alekssandra [29.7K]
2 years ago
7

Please help! Will mark brainliest

Mathematics
1 answer:
ser-zykov [4K]2 years ago
5 0

Answer:

Step-by-step explanation:

t1 = a1

t2 = a1 + d

t3 = a1 + 2d

The sum is t1 + t2 + t3 = a1 + a1 + d + a1 + 2d = 3a1 + 3d

Second question

t1 = a1

t2 = a1 + d

t3 = a1 + 2d

t4 = a1 + 3d

...

tn = a1 + (n - 1)*d

Sum = (a1 + a1 + (n- 1)*d) * n / 2

Sum = (2a1 + nd - d) * n / 2

Sum = (2a1*n + n^2*d - nd) / 2

You might be interested in
Which property is illustrated by the statement 13x12=12x13
finlep [7]
Oooh I don't know the exact wording, but it is the property that states that the order of the numbers in the equation can be switched and still equal the same thing as long as the signs are still kept.
8 0
3 years ago
Read 2 more answers
The quotient of the sum of 2t and 2 and twice the cube of s
Vladimir79 [104]

The equation according to the given verbal sentence is \frac{2 t+2}{2 s^{3}} (after solving this \frac{t+1}{s^{3}} ).

<u>Step-by-step explanation:</u>

Rewrite the given verbal sentence and so it will be easier to translate.

Given: The quotient of the sum of 2 t and 2 and twice the cube of s

sum of 2 t and 2 can be written as

       2 t + 2

twice the cube of s

      2 s^{3}

Now, combine the above according to the given verbal. The quotient of the sum of 2 t and 2 and twice the cube of s  means,

             2 t + 2  divided by 2 s^{3}

Now, the equation would be \frac{2 t+2}{2 s^{3}}

When solving this equation, we get

         \frac{2(t+1)}{2 s^{3}}=\frac{t+1}{s^{3}}

8 0
3 years ago
i buy 3 apples to 4 bananas. If I buy 6 more bananas than apples, how many total pieces of fruit did I buy?
ASHA 777 [7]

Answer:

42

Step-by-step explanation:

The difference in ratio units is 1, which corresponds to a difference in fruit count of 6. So the total of 7 ratio units must represent 7×6 = 42 pieces of fruit.

8 0
2 years ago
If 1 cm represents 30 km on a map and colorado is shown by a 20cm by 15 cm rectangle on the map, what is the approximate actual
zubka84 [21]

Answer:

20*30km = 600km

15*30km = 450km

600km * 450km = 270000 km^2

Step-by-step explanation:

assuming 1cm --- 30km causes that 2cm --- 60km, 3cm --- 90km, 4cm --- 120km etc. Notice that number of km's is 30 times greater than the number of cm's on a map

using this logic, you calculate both real dimensions of Colorado by multiplying 20*30 = 600 km and 15*30 = 450km

Then we use a formula of an area of a rectangle A=a\cdot b assuming a=600km, \ b=450km and get A=600\cdot 450=270000km^2 which is an actual area of Colorado

3 0
2 years ago
Calculate the mean of this data set: 12, 35, 44, 74, 23, 49, 45, 18, 90, 56, 84,
Blababa [14]
Well, here is the mean of ur data collected 48.181818...
4 0
3 years ago
Read 2 more answers
Other questions:
  • Uniforms are sold in packages of 8. The stores 127 employees will each be given 3 uniforms. How many packages will the store nee
    9·1 answer
  • Find the quotient of -36/12. A)3 B)18 C)24 D)-3
    8·1 answer
  • Please help me !!!!!
    15·2 answers
  • In ΔABC, AC II DE and m∠1 = 55°.<br><br> What is m∠4?
    12·1 answer
  • Joan is H cm tall. Gill is 3 cm shorter than Joan. Write down Gill's height in terms of H
    13·1 answer
  • Dianne knows a phone call a friend for the first 3 minutes costs 25 cents and 10 cents for each additional minute
    12·1 answer
  • Potencia multiplica de 0.0042÷0.4​
    10·1 answer
  • Simplify cos theta tan theta
    5·1 answer
  • Which equation represents the situation? A university charges a $100 application fee and $720 per month tuition
    9·1 answer
  • I neeed helppppppppppp
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!