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
Semmy [17]
4 years ago
7

Calculate S_24 for the arithmetic sequence in which a_13=1.9 and the common difference is d=3.7

Mathematics
1 answer:
boyakko [2]4 years ago
7 0
An=a1+d(n-1)
a13=1.9
1.9=a1+3.7(13-1)
1.9=a1+3.7(12)
1.9=a1+44.4
minus 44.4 both sides
-42.5=a1

an=-42.5+3.7(n-1)
S_24, so sum all theway up to a24
S_n=(n(a1+an))/2

a1=-42.5
a24=-42.5+3.7(24-1)=42.6

S_n=(24(-42.5+42.6))/2
S_n=(24(0.1))/2
S_n=(2.4)/2
S_n=1.2

D
You might be interested in
Describe the transformation f(x) = Vx+ 1 - 5 in words.
ivanzaharov [21]

Answer:

The translation is 1  unit to the left and  5 units down

Step-by-step explanation:

The explanation is given below;

Given that

The transform function is f(x) = \sqrt{x+1} - 5

It can be seen that

The parent function is

f(x) = \sqrt{x}

After that

The parent function would be transform 1 units to the left \sqrt{x+1}

And afterwards it would be transform in 5 units down \sqrt{x+1} - 5

So

The parent function f(x) = \sqrt{x} would be  translate in 1  unit to the left and  5 units down

4 0
3 years ago
Read 2 more answers
Which system of equations can be graphed to find the soultion(s) to x^2=2x+3
Elanso [62]

Answer:

\left \{ {{y=x^2} \atop {y=2x+3}} \right.

Step-by-step explanation:

The system would be:

\left \{ {{y=x^2} \atop {y=2x+3}} \right.

And I attached the graph. The system will have 2 solution (The 2 intercepts between the curves)

3 0
4 years ago
4 measurements = 10 points Can anyone help?
m_a_m_a [10]

FIG A : ANGLE OF BAC = 67.38 °

FIG B : LENGTH OF RT = 10.549 cm

FIG C: LENGTH OF AB =  5.282 cm

FIG D:  ANGLE OF ACB = 37.303°

Step-by-step explanation:

Fig A:

ABC angle = ( Opposite side) / (Hypotenuse)

                  Sin Ф = (12) / (13)

                   Ф = Sin⁻¹ ( 12/13)

                    Ф = 67.38 °

Fig B:

By the basic property of  trigonometry

Tan Ф = (Opposite side) / (Adjacent side)

Tan Ф = (14)/ X

X= 14 / (Tan 53° )

Length of RT = 10.549 cm

Fig C:

By the basic property of trigonometry

Sin Ф = (Opposite side) / (Hypotenuse)

Sin Ф = (X) / 12.5

X = 12.5 * Sin 25°

X=  5.282 cm

Fig D:

From the basic property of Trigonometry

Tan Ф = (Opposite side) / (Adjacent side)

Tan Ф = (8/10.5)

Ф = Tan⁻¹ ( 8/10.5)

  Ф = 37.303°

8 0
4 years ago
I need the answer to this please.​
ohaa [14]

Answer:

Step-by-step explanation:

Its (1,3) and (-3, -2)

6 0
3 years ago
Sunny went bowling with her friends. She paid $4.50 to rent shoes, and then $6.25 for each game of bowling. If she spent $42, th
fomenos
Pretty sure its my guy
5 0
3 years ago
Other questions:
  • The scale drawing of a window is 1 inch by 2 inches. The actual size of the window is 24 inches by 48 inches. What is the scale
    6·1 answer
  • Can anyone pls help me in dis pls
    6·2 answers
  • Need help with this
    7·1 answer
  • Help please! i don’t understand how to do this!
    13·2 answers
  • Find the sum of 17 - 3.6 + 4.049
    7·1 answer
  • ASAP HELP PLZ ASAP PLZ
    6·2 answers
  • Pls answer asap no trolls pls!!!!
    12·1 answer
  • PLEASE HELP IM STUCK:(
    14·1 answer
  • Find the value of two numbers if their sum is 39 and their difference is 1
    15·1 answer
  • Question 1a: Write the expression for side AC and side BC. (answer as: AC = ......, BC = .......
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!