Can somebody simply these matrixs for me please I will give out brainlist to first correct answer

Answer: x = -3    y = 29

Step-by-step explanation:

9x + y = 2

-4x - y = -17

5x = -15

Divide both sides by 5

x = -3

9x + y = 2

Substitute -3 for x

9 (-3) + y = 2

-27 + y = 2

Add 27 to both sides

y = 29

Hope I helped!

Answer:

x = 60, y = 25

Step-by-step explanation:

Δ ABC has 3 congruent sides and is equiangular, thus

the 3 angles are congruent, all 60°

x = 60

∠ ABC and ∠ CBD are adjacent and supplementary, sum to 180° , then

∠ CBD = 180° - 60° = 120°, so

y = 180 - (120 + 35) = 180 - 155 ← sum of angles in triangle

y = 25

Answer:

$81

Step-by-step explanation:

You need to divide 45 by 10 to get 10% of 45. 10% of 45= 4.5. Then, multiply 4.5 by 8 to get 80% of 45. Then, add 36 to 45 to get 81 dollars final price.

Answer:

10.5 =x

Step-by-step explanation:

We can rewrite this as a ratio

7          2

---- = ------

x         3

Using cross products

7*3 = 2x

Divide each side by 2

21 /2 = 2x/2

10.5 =x

Answer: You're lucky I helped you(◔_◔)

Step-by-step explanation:

JK = KD = l

JD = l√2

l√2 = JD

l√2 = 8√2

Divide both sides by √2

l = 8

JK = 8m

KD = 8m

Answer:

87.92 or 88 inches(simplified)

Step-by-step explanation:

circumference = 2 Pi R R= 1/2 diamater

ribbon = circumference

ribbon = 2x3.14x14 = 87.92 inches

Answer:

Second Choice.

Step-by-step explanation:

The shifting of graph depends on value of b.

[tex]y = mx + b[/tex]

If b > 0, the graph shifts up.

If b = 0, the graph passes origin point.

If b < 0, the graph shifts down.

The only thing that's matter if the graph shifts up or down is about if the value of b is in negative or positive.

Answer:

4.25 is the answer or 4 1/4

Step-by-step explanation:

the width 8 1/2 inches and the area is 36 1/8. therefore we have to do 36 1/8 divided by 8 1/2 to get 4 1/4 as the side length

Answer:

volume = 240b in³

Step-by-step explanation:

Width is b in

Volume = length * height * width

then:

volume = 16in * 15in * bin

volume = 240b in³

Step-by-step explanation:

i forgot this im in college XD

Answer:

48/3

Step-by-step explanation:

Answer:

To find the roots of the quadratic equation we set the factors of the quadratic equation equal to 0.

Step-by-step explanation:

Consider the provided information.

Roots of the equation is x-intercepts or zeros of the given equation.

So, By definition, the value of The y-coordinate is zero for points situated on the x-axis.

Thus, we can find the roots of a quadratic function, by putting f (x) = 0.

Now, let (x-a)(x-b) is the factor of any quadratic equation.

To find the roots of the quadratic function we will put our factor equal to 0.

[tex](x-a)(x-b)=0[/tex]

Now by the zero product property either x-a=0 or x-b=0

[tex]x-a=0[/tex] then [tex]x=a[/tex]

or

[tex]x-b=0[/tex]  then [tex]x=b[/tex]

So, we can say that to find the roots of the quadratic equation we set the factors of the quadratic equation equal to 0.

Answer:

Step-by-step explanation:

0.03550295857

Answer: C. 58 miles

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

I know I'm smart

sike I'm autistic

Answer: a + b = 3 -        maybe

Step-by-step explanation:

( 3a + 3b + 1 )( 3a + 3b - 1 ) = 80

Expand

9a² + 9ab - 3a + 9ab + 9b² - 3b + 3a + 3b - 1 = 80

Simplify

9a² + 9b² + 18ab - 1 = 80

move the 1 over

9a² + 9b² + 18ab = 81

divide by 9

a² + b² + 2ab = 9

not really sure after this part

move the 2ab over

a² + b² = 9 - 2ab

square root both sides

a + b =  

simplify

a + b = 3 -

Answer:

1/5

Step-by-step explanation:

opposite of 5x5 is 5 divided by 5

Answer:

x = - 3  and  y = − 4

Step-by-step expla

Answer:

576π

Step-by-step explanation:

π6²=36π

36π*48=1728π

4/3π6³=288π

288π*4=1152π

1728-1152=576π

Answer:

53

Step-by-step explanation:

5 groups of 8= 40

13 more than that is 53

Step-by-step explanation:

Hey there!

The given points are; (1,-3) and (3,1).

Note: Use double point formula.

[tex](y - y1) = \frac{y2 - y1}{x2 - x1} (x - x1)[/tex]

~ Put all values.

[tex](y + 3) = \frac{ - 1 - 3}{3 - 1} (x - 1)[/tex]

~ Simplify it.

[tex]y + 3 = - 2x + 2[/tex]

[tex]2x + y + 1 = 0[/tex]

Therefore, the eqaution is; 2x+y+1= 0.

Hope it helps....

Answer: 8 days

Step-by-step explanation:

6 miles has been paved already.

Number of miles left = 30 - 6

= 24 miles

If they are paving at 3 miles a day, the days they will take to finish is:

= 24/3

= 8 days

Answer:

8 days

because if they are paving at 3 miles a day, the days they will take to finish is:   = 24/3

Answer:

I think answer is 6X-18=0.

Step-by-step explanation:

Answer:

Either, x=3/5 or, x=-6

Step-by-step explanation:

(5x-3)(6+x)=0

Either,

5x-3=0

5x=3

x=3/5

Or,

6+x=0

x=-6

Answer: it should be 3/4

Step-by-step explanation:

Answer:

54.54

Step-by-step explanation:

Answer:

(-2,-6) (6,2)

Step-by-step explanation:

Answer:

4x<=100

Step-by-step explanation:

she has 4 friends to spend the 100 dollars on because she wants to spend the same amount on each friend you can multiply 4x. you can't spend more than 100 but you can spend 100$ so it would be <=100