All categories

3 years ago

Solve the following equation by Cramer's rule

Mathematics

1 answer:

podryga [215]3 years ago

5 0

Answer:

All Indians are my brothers and sisters aur Cramer mera chacha hai

You might be interested in

BRAINLIEST!!! Find the measure of the side indicated (x). Round to the nearest tenth. Show your work to support your answer.

Vlad1618 [11]

Answer:

The image is really blury but it does have to be more than 11

Step-by-step explanation:

8 0

3 years ago

Find the twenty-fifth term of an arithmetic sequence if the first term is-1 and the common difference is 5. Write the first thre

denis-greek [22]

Answer:

1). $T_{25}=119$

2). $T_{1}=-23$

$T_{2}=-23+2=-21$

$T_{3}=-23+4=-19$

Step-by-step explanation:

First term of an arithmetic sequence is (-1) and common difference is 5.

Then we have to find twenty fifth term of this arithmetic sequence.

Since explicit formula of an arithmetic sequence is represented by

$T_{n}=a+(n-1)d$

Where $T_{n}$ represents nth term of the sequence.

a = first term

n = number of term

and d = common difference

Now we will find 25th term of this sequence.

$T_{25}=(-1)+(25-1)5$

= (-1) + 120

= 119

Similarly in second part of this question we have to find first three terms of an arithmetic sequence in which

$T_{21}=17$ and

$T_{50}=75$

Now from the explicit formula

17 = a + (21 - 1)d

17 = a + 20d --------(1)

75 = a + (50 - 1)d

75 = a + 49d --------(2)

Now we subtract equation 1 from 2

75 - 17 = 49d - 20d

29d = 58

d = $\frac{58}{29}=2$

By putting d = 2 in equation 1

17 = a + 20×2

17 = a + 40

a = 17 - 40

a = -23

Therefore, first three terms of this sequence will be

$T_{1}=-23$

$T_{2}=-23+2=-21$

$T_{3}=-23+4=-19$

8 0

4 years ago

The abs r us bodybuilding club has an annual membership fee of $414. you plan to visit 8 times each month. how much is your cost

elena-s [515]

Cost of visit per month is $414/12 = $34.5

Cost of individual visit per month = $34.5/8 = $4.3125

3 0

4 years ago

Read 2 more answers

A boy weighs 31.5 kilograms.How much does he weigh in pounds.use the following conversion 1 kilogram is 2.2 pounds

Alex Ar [27]

1 kilogram = 2.2 pounds.
Multiply the total kilograms by 2.2 to get total pounds.

31.5 kilograms x 2.2 = 69.3 pounds

4 0

3 years ago

line ob bisects angle nod and line oa and line oc trisects angle nod and angle aob is 20 degrees less than angle noa. find the m

vova2212 [387]

Answer:

$m\angle NOD=120^{\circ}\\ \\m\angle BOC=20^{\circ}$

Step-by-step explanation:

If lines OA and OC trisect angle NOD, then

$m\angle NOA=m\angle AOC=m\angle COD=(2x)^{\circ}$

By angle addition postulate:

$m\angle NOD=m\angle NOA+m\angle AOC+m\angle COD=(2x)^{\circ}+(2x)^{\circ}+(2x)^{\circ=6x^{\circ}}$

If line OB bisects ange NOD, then

$m\angle NOB=m\angle BOD=\dfrac{(6x)^{\circ}}{2}=(3x)^{\circ}$

Angle AOB is 20 degrees less than angle NOA, then

$m\angle NOA-m\angle AOB=20^{\circ}$

By angle addition postulate,

$m\angle NOB=m\angle NOA+m\angle AOB\Rightarrow (2x)^{\circ}+m\angle AOB=(3x)^{\circ}\\ \\m\angle AOB=x^{\circ}$

Thus,

$(2x)^{\circ}-x^{\circ}=20^{\circ}\\ \\x=20^{\circ}$

and

$m\angle NOD=6\cdot 20^{\circ}=120^{\circ}\\ \\m\angle BOC=x^{\circ}=20^{\circ}$

6 0

3 years ago

Solve the following equation by Cramer's rule​

Solve the following equation by Cramer's rule