20 Points!!!!!
Find the cofactors of each entry in the first row of the matrix

Answer:

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Answer:3Y+6=12

3(2)+6=12

Step-by-step explanation:Because 3 + 3 is 6 So That means that you repeat the pattern 4 times 3 Times 4 equals 12

Answer:

a. You are looking for an annuity that will give $41,000 in 5 years with a quarterly compounding rate of 4.25%.

Convert periods and interest to quarterly rate.

Period = 5 * 4 = 20 quarters

Interest = 4.25 / 4 = 1.0625‬%

41,000 = Annuity * ( [ 1  +  i ] ^n - 1 )/i

41,000 = Annuity * ( [ 1 + 1.0625%]²⁰ - 1) / 1.0625%

41,000 = Annuity * 22.1534596596

Annuity = 41,000 / 22.1534596596

= $1,851

b. There were 20 payments of $1,851 made which totals:

= 1,851 * 20

Cash from deposits = $‭37,020‬

Cash from interest = 41,000 - ‭37,020‬ = $3,980

Answer:

y = -(5/2)x + 3 is a line perpendicular to y = (2/5)x + 2. This line is also perpendicular to y = (2/5)x + 9 because it has the same slope.

Step-by-step explanation:

A) So the line you are given is written in slope intercept form y = mx + b meaning that the slope of the line is  m = 2/5 and the intercept  b = 9 (so the line hits the y axis at 0,9). A line that is parallel has to have the same  slope so we know our m is the same. So we have y = (2/5)x + b. We need b. It passes (0, 2) since the x coordinate is 0 you know the y intercept is 2 but you can verify this using the point slope formula:

y - y1 = m(x - x1) plug in values

y - 2 = (2/5)(x - 0) now simplify

y - 2 = (2.5)x  last solve

y = (2/5)x + 2 see how when the x coordinate is 0 you can automatically use the point slope intercept formula? Neato!

B) Now we want a line perpendicular to y = (2/5)x + 2 and that passes through 0,3. What are the properties of a line perpendicular to a line of the form y = mx + b and passes through (0, 3)?  We know that the slope of this new line will be the reciprocal and have the opposite sign of m. So the new slope we will call it mnew = -(1/m) so plug in for m and you get mnew = -(1/[2/5]) if you simplify you get that the mnew = -(5/2). So we have half of our equation for the perpendicular: y = -(5/2)x + b. If you look at (0, 3) you see that the y intercept is 3 so b = 3. So:

The equation of the line that passes through given point and is parallel to the line with the given is y = 2x-1

An equation is a mathematical statement that shows that two mathematical expressions are equal.

Given that, we need to find the equation of a line passing through the point (3, 5) and is parallel to y = 2x-6,

Comparing the given equation with the general equation of line y = mx+c

m = 2 (the slope)

We know that the two parallel lines have equal slope.

Therefore, the required equation is =

y = 2x+c

To find the value of c, put x = 3 and y = 5,

5 = 2(3) + c

c = -1

Therefore,

The required equation is =

y = 2x-1

Hence, the equation of the line that passes through given point and is parallel to the line with the given is y = 2x-1

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Answer:

given :

y= 3x,

-3x-y = -24.

now just substitute the values

since y = 3x,

-3x-3x = -24

Answer:

its 136

Step-by-step explanation:

we know that all angles add to 180. 46+90+x=180. Isolate the varaible x must equal 44. We know that straight lines equal to 180. 180-44 equals to 136

Answer:

Y = negative x + 9

Step-by-step explanation:

Find the equation of the line for side S-

m= 4-1/1-4 = 3/-3 = -1

The Gradient is -1

Since parallel lines share the same gradient, it should be either of the first two options.

We can see side Q shares the same gradient: 3-6/6-3= -1

Find the equation of the line of side Q-

y-y1= m(x-x1)

y-6= -1(x-3)

y-6=-x+3

y= -x+9

Answer:

a

Step-by-step explanation:

Answer:

[tex]x=\frac{20}{3} =6.67[/tex]

Step-by-step explanation:

[tex]x=15*\frac{4}{9}=\frac{20}{3} =6.67[/tex]

Answer:

6 2/3 or 20/3 or 6.6667

Step-by-step explanation:

Since the figures are similar, you can find x through comparing ratios. To get from 9 to 4, multiply 9 by 4/9. To find x, you must then multiply 15 by 4/9.

15 x 4/9 = 6 2/3 or 20/3 or 6.6667

Answer: 213 2/3 miles

Step-by-step explanation:

first we need to set up an equation to solve

let your equation be in y=mx+b form since we are using a rate

Since this is a word problem, dissect it and match each part with a variable in the slope-intercept equation

y = Budget

m = rate

x = how many miles she can go -- the unknown variable

b = the initial fee

Your equation should be: 50 = 0.15x + 17.95

We want to soIve for x now so first get rid of the coefficient not attached to it

To do this, you do the inverse function of addition, which is subtraction

Subtract 17.95 from both sides

Your new equation will be: 32.05 = 0.15x

0.15 is still attached to x, so we want to do the inverse function of multiplication, which is division

divide both sides by 0.15

Your final answer: 213 2/3 miles

Answer:

16/8-4/8*2=2

Step-by-step explanation:

Answer:

[tex]\frac{1}{3}\ of\ Rs.30 = Rs.10[/tex]

Step-by-step explanation:

Given

[tex]\frac{1}{3}\ of\ Rs.30[/tex]

Required

Solve

of means *. So, we have:

[tex]\frac{1}{3}\ of\ Rs.30 = \frac{1}{3}\ *\ Rs.30[/tex]

[tex]\frac{1}{3}\ of\ Rs.30 = \frac{1\ *\ Rs.30}{3}[/tex]

[tex]\frac{1}{3}\ of\ Rs.30 = \frac{Rs.30}{3}[/tex]

[tex]\frac{1}{3}\ of\ Rs.30 = Rs.10[/tex]

Answer:

7x * 14

Step-by-step explanation:

hope this helps :)

Answer:

Step-by-step explanation:

To solve this you need the Law of sines

a, b, c are the sides opposite to angles A, B and C respectively

Applied to the given triangle we have one side given, the opposite angle to be found.

Answer:

1/5=20%

Step-by-step explanation:

Answer:

8/10 or 16/20

Step-by-step explanation:

4x - 14= -3

hope this helps! (:

Answer:

14 - 4x = -3

Step-by-step explanation:

Hope this helps. B)

Answer:

Sum of all angles of a triangle is 180

so we can have our equation as-

65+65+x=180

x=180-130

x=50

Hope it helps

Answer:

for Q5)1.88m and Q6)5.62

Step-by-step explanation:

Q5)

all you have to add the radius to find out the diameter then times with 3.14

Q6)

1.8 x 3.14

Answer:

The answer is 3

Step-by-step explanation:

3/4x4 =3

4 x 3/4 = 3

All you are doing is reducing the numbers with the greatest common factor which is the number 4.

Answer:

yufcyiciygciykgc, nbhgcv

Step-by-step explanation:

98yfgouyfuchkgcbvkhgcihdiytdiytditdytdiytdityghvhgcxdfsrtyuhkjbhcgfdxzsaewrsdxfhgyujkhjmnb cvngfjkhji

Answer:

2/3 x 12 = 8/x

8x

Answer:

25 cm

Step-by-step explanation:

the whole parallelograph is 5 times 10 which equals 50. Devide that by 2 and you get 25

Answer:

the answer is 25 cm total

Answer:

19

Step-by-step explanation:

☺

Answer:

[tex]10n \le 30[/tex]

[tex]n \le 3[/tex]

Step-by-step explanation:

Given

[tex]Total = \$30[/tex]

[tex]Cost (each) = \$10[/tex]

Required

Determine the inequality

Assume she wants to buy n CDs.

If 1 CD costs $10, then n CDs costs 10n.

So, the inequality is:

[tex]10n \le 30[/tex]

We used [tex]\le[/tex] because the amount she wants to spend cannot exceed 30

Divide both sides by 10, to solve for n

[tex]n \le 3[/tex]

Answer:

The amount it took in 2011 to equal the value of 1 currency unit in 1917 was of 24.091 currency units.

The amount it took in 2019 to equal the value of 1 currency unit in 1917 was of 28.031 currency units.

Step-by-step explanation:

The value needed to equal the value of 1 currency unit in 1917, in x years after 1990, is given by:

[tex]V(x) = 0.4925x + 13.7485[/tex]

a) Use this function to predict the amount it will take in 2011 and in 2019 to equal the value of 1 currency unit in 1917​

2011 is 2011 - 1990 = 21 years after 1990, so we have to find V(21).

[tex]V(21) = 0.4925*21 + 13.7485 = 24.091[/tex]

The amount it took in 2011 to equal the value of 1 currency unit in 1917 was of 24.091 currency units.

2019 - 1990 = 29, so we also to find V(29).

[tex]V(29) = 0.4925*29 + 13.7485 = 28.031[/tex]

The amount it took in 2019 to equal the value of 1 currency unit in 1917 was of 28.031 currency units.

Answer: No

Step-by-step explanation:

4.8%

=> 4.8 / 100

=> 4.8 = 0.048

Givn : OK = 3, OJ = 30, KN = 1, JM = 3

ON=OK+KN=3+1=4

OM=OJ+JM=30+10=40

In triangles OKJ & ONM,

OKOJ=330=110

ONOM=440=110

Angle O is common in both the triangles.

Two sides are in same proportion and the included angle is common (SAS) . Hence both the triangles are similar.

That means KJNM=110 or the two sides are parallel.

Hence ˆK=ˆN,ˆJ=ˆM corresponding angles.

Two sides in each triangle that are proportional to each other, and a corresponding included angle in both triangles that are congruent, both triangles are similar.

Recall:

Two triangles can be proven to be similar by the SAS Similarity Theorem, if they both have two pairs of corresponding side lengths that are proportional to each other and also have a corresponding included angle that is congruent to each other.

Using the image given, let's determine if two of the given side lengths of each triangle are proportional to each other.

Given:

[tex]\frac{OM}{OJ} = \frac{ON}{OK}[/tex]

[tex]\frac{40}{30} = \frac{4}{3}[/tex] (proportional)

Also, <NOM and <KOJ are congruent to each other (included angles).

Therefore, since we have two sides in each triangle that are proportional to each other, and a corresponding included angle in both triangles that are congruent, both triangles are similar.

The similarity statement is: [tex]\triangle NOM \sim \triangle KOJ[/tex]

Theorem: Side-Angle-Side Similarity Theorem (SAS)

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