Solve and show work.


1. x^2 + 3x - 4 = 0


2. 2x^2 - 4x - 3 = 0


3. x(x - 2) = 4


4. 9x^2 + 12x + 4 = 0


5. x^2 + 2x = 1

Answer: There is no polygon with the sum of the measures of the interior angles of a polygon is 1920°.

Step-by-step explanation:

The sum of the measures of interior angles of a polygon with [tex]n[/tex] sides is given by:-

[tex](n-2)\times180^{\circ}[/tex]

Given: The sum of the measures of the interior angles of a polygon is 1920°.

i.e. [tex](n-2)\times180^{\circ}=1920^{\circ}[/tex]

[tex]n-2=\dfrac{1920}{180}\\\\ n= \dfrac{1920}{180}+2\\\\ n=\dfrac{2280}{180}=12.67[/tex]

But number of sides cannot be in decimal.

Hence, there is no polygon with the sum of the measures of the interior angles of a polygon is 1920°.

Answer:

D is the answer - 1.8 g/min

Step-by-step explanation:

Step-by-step explanation:

s = 2/3

because A = SxS = 2/3 x 2/3 = 4/9

Answer:

Step-by-step explanation:

(15y+x)^2

That’s your answer. I hope i helped!

Answer:

about 14 or 14.3 to be more specific

Step-by-step explanation:

Step-by-step explanation:

here is the my estimation for this is is 14.43

S, sample space :

all the possible outcomes of an experiment

number × sampel space = 8

Answer :

D. HHH, HHT, HTH, HTT, THH, THT, TTH, TTT

*answer can get from the list of sample space (in pic)

Answer :

A.

* answer can get from the final of tree diagram (in pic)

Answer:

A

Step-by-step explanation:

60÷4 = 15

5×15=75, that's how many boys

Answer:

21ml/2

Step-by-step explanation:

Answer:

she used the car for 3 days

Step-by-step explanation:

1. = 10$

2. =10$

3. =10$

the rent was 15$ so 30 + 15 =45$

Answer:

yay i got the spam answerer reported

Step-by-step explanation:

Answer:

8

Step-by-step explanation:

1/2 goes to 3/4.. 5/8 goes to 3/4 as well, and both of them together would be 1

Answer:

L- 23

P-53

O-28

U-43

H-58

Step-by-step explanation:

For this question you must simply replace N in the equation with the number in every letter for example L is 23 because a = 5 x (4) + 3, thus these are your answers!

Answer:

n=4   a=23

n=10  a=53

n=5   a=28

n=8   a=43

n=11   a=58

I dont know what the letter are for but here ya go.

Hope this Helps your sister! :)

Answer:

(0,1)

Step-by-step explanation:

the y intercept is when x = 0

Answer:

(0.3) , That's It love hope this works

Answer:

[tex]\huge\boxed{\sf 18 cm\²}[/tex]

Step-by-step explanation:

The figure consists of 2 rectangles.

Rectangle 1 Area:

Length = 5 cm

Width = 2 cm

Area = Length * Width

A = 5 * 2

A = 10 cm²

Rectangle 2 Area:

Length = 4 cm

Width = 2 cm

Area = 2 * 4

A = 8 cm²

Area of the whole figure:

= Rectangle 1 + Rectangle 2

= 10 + 8

= 18 cm²

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

Answer:

[tex]\Large \boxed{\sf 18 \ cm^2}[/tex]

Step-by-step explanation:

Split shape into two rectangles

Calculate area of the two rectangles and add them

[tex]6\times 2+3 \times 2=18[/tex]

Answer:

meters

Step-by-step explanation:

judging by the fact that it says meters i'd say that's the answer. hope this helps :)

Answer:

Answers provided below

Step-by-step explanation:

From the simultaneous linear equation, we have the coefficient matrix as;

(3 4 5)

(2 -1 8)

(5 -2 7)

The x-matrix is Dx is given by;

(18 4 5)

(13 -1 8)

(20 -2 7)

Similarly, the y-matrix Dy is given by;

(3 18 5)

(2 13 8)

(5 -20 7)

Also,the z-matrix Dz is given by;

(3 4 18)

(2 -1 13)

(5 -2 -20)

Determinant of the coefficient matrix from online determinant calculator is;

D = 136

Determinant of the x-matrix from online determinant calculator is; Dx = 92

Determinant of the y-matrix from online determinant calculator is; Dy = 696

Determinant of the z-matrix from online determinant calculator is; Dz = 576

From crammers rule;

x = Dx/D = 92/136

y = Dy/D = 696/136

z = Dz/D = 576/136

Answer:

$33.6

Step-by-step explanation:

24*1.4=33.6

the 1.4 represents the added 40% to find the original price of the sled

Answer:

original price = 40

Step-by-step explanation:

make an equation using the information given in the question, x will represent the original price

x - 0.4x = 24

or

x - 2/5x = 24

solve for x

x - 2/5x = 24

3/5x = 24

x = 40

Answer:

y=-17, x=-8

Step-by-step explanation:

x-9=3x+7

Isolate x for x-9=3x+7;

x-9=3x+7

Add 9 to both sides:

x-9+9=3x+7+9

Simplify;

x=3x+16

Subtract 3x from both sides;

x-3x=3x+16-3x

Simplify;

-2x=16

Divide both sides by -2;

-2x/-2=16/-2

simplify: -2x/-2

=x

Simplify 16/-2:

x=-8

For y=x-9 substitute x=-8;

y=-8-9

Simplify;

y=-17

The solutions to the System of equations are;

y=-17, x=-8

Answer:

i dont know sorry

Step-by-step explanation:

i dont know sorry

43.96/14

Step-by-step explanation:

Answer:

A:

probability of red = 4/16 = 1/4

prob(blue) = 7/16

probability of red, then blue is (1/4)(7/16) = 7/64

B:

probability red = 1/4

probability blue = 7/15

probability of red, then blue = (1/4)(7/15) = 7/60

c) your decision

Step-by-step explanation:

i took the test

The solution is,

A. 7/64 is the probability of selecting a red marble, replacing it, and then selecting a blue marble.

B. 7/60 is the probability of selecting a red marble, setting it aside, and then selecting a blue marble.

C. the answer is no.

Probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event.

here, we have,

given,

There are 4 red marbles.

There are 7 blue marbles.

There are 5 green marbles.

There are 16 marbles in total.

A:

Answer = (probability of selecting a red marble)(probability of selecting a blue marble)

First, the probability of selecting a red marble.

probability of red = 4/16 = 1/4

probability(blue) = 7/16

probability of red, then blue is (1/4)(7/16) = 7/64

B:

Answer = (probability of selecting a red marble)(probability of selecting a blue marble)

First, the probability of selecting a red marble.

probability red = 1/4

probability blue = 7/15

probability of red, then blue = (1/4)(7/15) = 7/60

c) obviously,

7/64 ≠ 7/60

So the answer is no.

To learn more on probability click:

brainly.com/question/11234923

#SPJ3

Answer:

6

Step-by-step explanation:

Given,

4r = 24

[tex] = > r = \frac{24}{4} [/tex]

=> r = 6(Ans)

Answer:

6

Step-by-step explanation:

4r = 24

r = 24/4

r = 6

Answer: n=1,2,3

Step-by-step explanation: if we plug in these numbers 2*1+3*1=5*1 this works. If we do this for 2 then we have 2*2+3*2=10 and 5*2= 10 this also works. The same thing with 3.  2*3+3*3=15     5*3=15

Hope this helps!

Answer:

okay so do 20-5=15 then divide how much each ticket costs and you get the answer.

Answer:

3

Step-by-step explanation:

Given:

The vertices of a quadrilateral are v(-2,-1) w(-5,-2) x(-8,-7) and y(1,-6).

To find:

The vertices of the image of quadrilateral vwxy after 180° about the origin.

Solution:

If a figure rotated 180° about the origin, then the rule of rotation is

[tex](x,y)\to (-x,-y)[/tex]

Using this rule, we get

[tex]v(-2,-1)\to v'(2,1)[/tex]

[tex]w(-5,-2)\to w'(5,2)[/tex]

[tex]x(-8,-7)\to x'(8,7)[/tex]

[tex]y(1,-6)\to y'(-1,6)[/tex]

Therefore, the vertices of image of quadrilateral vwxy after 180° about the origin are  v'(2,1), w'(5,2), x'(8,7), y'(-1,6).