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mars1129 [50]
3 years ago
15

In an arithmetic sequence, u1 = 1.3 , u2 = 1.4 and uk = 31.2. 7a. Find the exact value of Sk

Mathematics
1 answer:
DIA [1.3K]3 years ago
6 0
Basssssiiiiiicallly yhh
You might be interested in
Hello everyone!
Ivan
After 1 year it is worth 108% of its original value
108% = 1.08
so 1.08 x 1000 = $1080

After 2nd year it is worth 92% of that $1080
92% = 0.92
so 0.92 x 1080 = $993.60
3 0
3 years ago
How should I do this question
Ivanshal [37]

Answer:

( 11   -6)

( -5   6 )


Step-by-step explanation:

Multiply the first row of N by first column of M. This will give the first  element in top row of the answer :-

-3*-2 + 1*5 =  11

Then multiply the first row in N by the second column of M to give the second element of the top row.

-3*0 + 1*-6 =   -6

Then do a similar process with the second row in N.

8 0
3 years ago
Read 2 more answers
Find the distance between the points <br><br> a. 3<br> b. 4<br> c. 5<br> d. 6
Naily [24]

Answer:

B. 4

Step-by-step explanation:

7 0
3 years ago
Helllllllllllllllllllllllllllllllllllp
Anna11 [10]
X/4-9=5
x/4=14
x=14/4
x=7/2
x=3.5
3 0
3 years ago
In JKL, k=4.1 cm,j=3.8 cm and angle J=Q3^ Find all possible values of angle K , to the nearest inch of a degree .
spayn [35]

Answer:

74.0°

Step-by-step explanation:

In triangle JKL, k = 4.1 cm, j = 3.8 cm and ∠J=63°. Find all possible values of angle K, to the  nearest 10th of a degree

Solution:

A triangle is a polygon with three sides and three angles. Types of triangles are right angled triangle, scalene triangle, equilateral triangle and isosceles triangle.

Given a triangle with angles A, B, C and the corresponding sides opposite to the angles as a, b, c. Sine rule states that for the triangle, the following holds:

\frac{a}{sin(A)}=\frac{b}{sin(B)}=\frac{c}{sin(C)}

In triangle JKL, k=4.1 cm, j=3.8 cm and angle J=63°.

Using sine rule, we can find ∠K:

\frac{k}{sin(K)}=\frac{j}{sin(J)}   \\\\\frac{4.1}{sin(K)}=\frac{3.8}{sin(63)}  \\\\sin(K)=\frac{4.1*sin(63)}{3.8}\\\\sin(K)=0.9613\\\\K=sin^{-1} (0.9613)\\\\K=74.0^o  \\

6 0
3 years ago
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