Find the determinant of the matrix. Expand by cofactors on the row or column that appears to make the computations easiest.

Answer:

[tex]-\frac{17}{21}[/tex]

Step-by-step explanation:

Negative and positive is negative.

Negative and negative is positive.

Positive and positive is positive.

[tex]\frac{1}{3} +-\frac{7}{4}=\frac{1}{3}-\frac{7}{4} = -\frac{17}{12}[/tex]

Calculations:

Answer:

Fraction form: -1/2

Decimal form: -0.5

Step-by-step explanation:

1: Subtract 7 from both sides

7 - 6x = 9 - 2x

7 - 7 - 6x = 9 - 7 - 2x

6x = 2 - 2x

2: Add 2x on both sides

6x + 2x = 2 - 2x + 2x

-4x = 2

3: Divide both sides by -4 to get x by itself

-4x/-4 = 2/-4

x = -1/2

(Which can also be written as -0.5 in decimal form )

Answer:

0.953

Step-by-step explanation:

Answer:

The answer is D. 0.953

Step-by-step explanation:

Answer:

238 miles

Step-by-step explanation:

340 miles = 5 hours

So get 1 hour by dividing by 5 on both sides

5/5 = 1 hr

340/5 = 68

So in 1 hour they travel 68 miles

You want to find 3 1/2 hours

Do 68 x 3 to get 3 hours

So it would be 68 x 3 =204

Plus the half an hour - which you get by doing 68/2 = 34

68 = 1 hour, so half of that must be half an hour

So to get the final distance you do 204 (3 hours) +34 (half an hour)

204 + 34 =238

Answer:

x

Step-by-step explanation:

Step-by-step explanation:

1) Thousands

2) 100 thousands

3) tens

Answer:

18

Step-by-step explanation:

bro u have did it urself...but thnx for the points

Answer: 99%?

Step-by-step explanation:

Answer:

Base = 3√5

Step-by-step explanation:

Given:

Hypotenuse = 9

Perpendicular = 6

Find:

Base(x)

Computation:

Using Pythagorean theorem

Base = √Hypotenuse² - Perpendicular²

Base = √9² - 6²

Base = √81 - 36

Base = √45

Base = 3√5

Answer:

Sandhya performed better.

Step-by-step explanation:

You can either or simplify the fractions:

[tex]\frac{630}{900}[/tex] and [tex]\frac{650}{1300}[/tex] to simpler forms like [tex]\frac{7}{10}[/tex] and [tex]\frac{1}{2}[/tex] from there you can make the [tex]\frac {1}{2}[/tex] and multiply it by [tex]\frac{5}{5}[/tex] to get [tex]\frac{5}{10}[/tex] and then from there you can see Sandya performed better.

OR

You can divide 630 by 900 and 650 by 1300

630/900 gives you 70

and

650/1300 gives you 50

Clearly, once again Sandhya performed better.

Answer:

764

Step-by-step explanation:

well, it is

Answer:

764

700-hundreds + 60-tens + 4-ones

The value is hundreds if this is place value but i learned that in 2nd or 1st

grade u should no this lol

Answer:

Flour & Salt

Step-by-step explanation:

Answer:

The sum of two side lengths of a triangle must be greater than the length of the third.

So, if two side lengths are 3 and 7, the length of the third side must be less than 10 units.

However, it cannot be shorter than 4 units, as 3 + 4 = 7.

So your answer is: The third side of this triangle must not be shorter than 4 or longer than 10

Let me know if this helps!

Answer:

0.926

Step-by-step explanation:

Since it ask as decimal you will have to 0. and then the number which 926. Hope this helps, thank you !!

Answer:

Lin won't be charged $5.95 per day because her account balance is quite above zero(0), except her account balance falls down to zero, then she would be charged for subsequent deposits made into the account daily.

Answer:

Domain: 7,2

Range: 9,7

Slope is 2/5

Step-by-step explanation:

Domain is basically the x coordinates, which are 7 and 2 in this case. Range is the y coordinates: 9 and 7.

The slope is basically the line that connects these two dots.

Slope formula is (y2-y1)/(x2-x1)

But the points of the grid would be listed as (x1,y1) (x2,y2)

I don't know if I'm explaining this well enough, but if you follow that formula you get (7-9)/(2-7).

That equals to 2/5.

I hope this helped

Answer:

14 sales

Step-by-step explanation:

1,200-250=950

70×14=970

We first need to subtract our normal pay out of the expectation.

1200-250=950 dollars

These 950 dollars have to be made from sales, and if each sale gives you 70 dollars, we just need to do simple division.

950/70=about 13.57

This meant that if we get 13 sales, we are not quite there at the goal yet, so we need to round up. Getting 14 as our answer.

Answer:

the answer of 21-(-17)=21+17=38

Answer:

Yes by SAS

Step-by-step explanation:

if you do 42 / 18 you see that the relationship between the sides is 2.3333... so that is one proportional side

Then, you see that there is one angle in both triangles that is 76 degrees, so that is one equal angle

then, you can do 21 / 9 = 2.33333... which is the same as the first proportion which means that is another proportional side.

then you have a side, angle, and a side, so it's SAS

Answer:

9y - 27

Step-by-step explanation:

9(y - 3) = 9 * y - 9 * 3 = 9y - 27

Answer:

the answer would be 9y-27

Step-by-step explanation:

( 9 x y ) - ( 9 x 3 )

Answer:

[tex] {2b}^{2} + 32b + 128[/tex]

Factor and get

[tex]x = - 8[/tex]

Answer:

I think 7 is the answer

Answer:

4

-4

5

8

Step-by-step explanation:

you just divied like normal but if you have two negitives you will end out with the positve of the number

Answer + Explanation:

let x be the measure of angle x

let y be the measure of angle y

[tex]\left \{ {{x + y = 180} \atop {x=24+y}} \right.[/tex]

Now, solve:

plug x = 24 + y into x + y = 180

24 + y + y = 180

24 + 2y = 180

2y = 156

y = 78

Now, plug this back into the equation x = 24 + 78

x = 102

Answer:

x= 102

y= 78

Step-by-step explanation:

x+y=180

x= y + 24

2x-24 = 180

Answer:

-4p^2-6p+1

Step-by-step explanation:

Answer:

D.

Step-by-step explanation:

Try them all out.

0.12/6=0.02

0.03/6=0.005

0.3/6=0.05

1.2/6=0.2

D is the answer.