Plz help me on question 19 and 20 !

Answer:

A= 3

Step-by-step explanation:

4a - 7 = 5

move the constant to the right

4a= 5+7

divide

4a=12

Awnser:

A= 3

Answer:

I think these are the correct answers:

C.

The outcome of one event occurs at a different time than the outcome of the other event.

D.

The outcome of one event is not changed by the outcome of the other event.

Answer:

The measure of angle A is: m∠A = 96

Therefore, option A is true.

Step-by-step explanation:

Given

m∠C = 3x

m∠D = x+52

We know that the opposite angles of a parallelogram are also equal.

Determining m∠A

It is clear that A is the opposite angle of C.

i.e.

m∠A = m∠C

as m∠C = 3x

so m∠A = 3x

Determining  m∠B

It is also clear that B is the opposite angle of D.

i.e.

m∠B = m∠D

as m∠D = x+52

so m∠B = x+52

We know that the sum of the angles of a parallelogram is 360°.

so

m∠A + m∠B + m∠C + m∠D = 360°

3x + (x+52) + 3x + (x+52) = 360°

Group like terms

[tex]3x+x+3x+x+52+52=360^{\circ \:}[/tex]

[tex]8x+104=360^{\circ \:}[/tex]

Subtract 104 on both sides

[tex]8x+104-104=360^{\circ \:}-104[/tex]

Simplify

[tex]8x=360^{\circ \:}-104[/tex]

[tex]8x=256[/tex]

Divide both sides by 8

[tex]\frac{8x}{8}=\frac{256}{8}[/tex]

Simplify

[tex]x=32[/tex]

Thus,

The measure of the angle A is:

m∠A = 3x

substitute x = 32

m∠A = 3(32)

m∠A = 96

Hence, the measure of angle A is: m∠A = 96

Therefore, option A is true.

Answer:

10 X 5 = 50, 50 X 2 = 100

10 X 1 = 10 , 10 X 2 = 20

5 X 1 = 5 , 5 X 2 = 10

100 + 20 + 10 = 130 ft squared

Answer:

(465-249) / 9 = Square Feet

Step-by-step explanation:

You do whatever is in the parenthases 1st

Answer:

I believe its 1, 2, and 4

Step-by-step explanation:

hope I helped I may be wrong tho

.................................................

Answer: The exponential function would be

Step-by-step explanation:

Since we have given that

We have points (0,15) and (2,24)

First we take when x= 0, y = 15.

So, our equation becomes,

and we take when x = 2 and y = 240

So, the exponential function would be

Answer:

10x+15

Step-by-step explanation:

5 x 2x=10x

5x3=15

Answer:

10x+15

Step-by-step explanation:

5 x 2x= 10x

5 x 3= 15

10x+15

Answer:

9c because you don't know how much money Kelly actually spent so instead of doing 9 x the price of each box, you replace it with c, so it's 9c

Step-by-step explanation:

Answer:

30

Step-by-step explanation:

9514 1404 393

Answer:

  63.4% are girls

Step-by-step explanation:

The percentage that is boys is ...

  1244/3400 × 100% = 36.6%

The remaining fraction is girls:

  100% -36.6% = 63.4% . . . girls

( 3 m ) 2 − 1 2 i need to make this 20 characters

Answer: there are 8 cookies left

Step-by-step explanation:

Let's count how many cookies Max baked:

125% = 1.25

64 × 1.25 = 80

Let's count how many cookies were sold:

90% = 0.9

80 × 0.9 = 72

Leftover cookies:

80 - 72 = 8

Answer:

a) i) The equation is satisfies of the values x = 6 and y=9

ii) The greatest possible value of 3x-2y is  20

iii) The least possible value of 3x – 2y is 2 and '0'

b)

The value of 5(a – 4b)  =  -55

Step-by-step explanation:

Given x and y are two numbers taken from the list below

5  6   7   8   9  10

i)

I will choose  x = 6 and y = 9

3x - 2y = 3 (6) - 2(9) = 18 - 18 = 0

The equation is satisfies of the values x = 6 and y=9

ii)  

we will choose x =10 and y = 5

3x - 2y = 3(10) - 2(5) = 30 -10 =20

The greatest possible value = 20

iii)

we will choose x =6 and y =8

3x - 2y = 3(6) -2(8) = 18-16 =2

we will choose x =6 and y =9

3x - 2y = 3 (6) - 2(9) = 18 - 18 = 0

b)

Given value of 5(a – 4b)

substitute  a = -7 and b = 1​

5(a – 4b) = 5(-7-4(1)) = 5 (-11) = -55

Answer:

rational expression

Step-by-step explanation:

From the given information:

Since the quotient of two algebraic expressions seems to be a fractional expression,

Then the quotient of two polynomials;

For example:

[tex]\dfrac{1}{w}, \dfrac{2w-1}{w+1} \ or \ \dfrac{w^2-1}{w^2+1}[/tex]  is a rational expression.

Answer: 1) true 2) false

Answer:

A (had to be 20 letters for me to send this :')

Step-by-step explanation:

Answer:

52

Step-by-step explanation:

We can write this out as an equation. Let's say that the teacher's age is x. Triple the teachers age plus the students age is 163, which can be written out as:

[tex]3x + 7 = 163[/tex]

We want to isolate the variable, so subtract 7 from both sides. This gives us:

[tex]3x = 156[/tex]

Finally, we divide both sides by  3, giving:

[tex]x=52[/tex]

So the teacher is 52 years old.

Hope this helps!

Answer: The teacher is 52.

Equation: 7+3t=163

Step-by-step explanation:

Area = (1/2) *b*h

60 =(1/2)*10h

120 =10h

h=120/10

h= 12 cm

From the figure,

AB=BC(since the given triangle isosceles).

AE is perpendicular to BC.

BE =EC = 5cm ( since is AE bisects BC)

AB= h=12cm (height of the isosceles triangle)

Applying Pythagoras theorem in triangle ABE,

AB² = BE²+ AE²

AB² = 5²+12²

AB² = 169

AB =√169

AB= 13 cm

Hence AB=BC =13cm

Length of equal sides =13cm

Answer:

91

Step-by-step explanation:

to find the hypotenuse you do a^2+b^2=C^2

84^2+35^2 = 8281

the square root of 8281 is 91

Answer:

5 would be your answer.

Step-by-step explanation:

The answer is 5 because you have to divide 25 by 5, and you will get 5.

If I'm wrong, please let me know.

Hope this helps.

Have a great day! :)

Answer:

5

Step-by-step explanation:

This is right because you would divide 25 by 5 and you would get your answer. You make $5 every hour

Answer:

1.1

Step-by-step explanation:

Answer:

A = 144 m²

Step-by-step explanation:

Given that,

The length of the pen, l = 16 m

The breadth of the pen, b = 9 m

We need to find the area of the sheep pan. We know that the area of the rectangular shape is given by :

A = lb

Substituting all the values,

A = 16 m × 9 m

= 144 m²

So, the area of the sheep pen is 144 m².

Answer:

The answer is 19

Step-by-step explanation:

Range is the difference between the largest and smallest number, so in this case the largest number is 25 and the smallest number is 6. Subtract 25 and 6 to get the range. So the answer would be, The range of the following numbers is 19.

Answer:

Step-by-step explanation:

[tex]38.7=[/tex] [tex]38.7 / 10^{2}[/tex]

[tex]38.7= 38.7 times 10^{3}[/tex]

[tex]38.7=38.7 times 10^{4}[/tex]

Hope this helps :)

Answer:

the answer is 9.315

Answer:

26.B

27.J

28.B

29. x=40, y=32

Step-by-step explanation:

Answer:

I think its

Step-by-step explanation:

b is 26 sos others dont know

Answer:

y=1/2x-3

Step-by-step explanation:

I hope you meant slope of the line...

You can find the slope like this-

1/2x= how you move (so m for move)

-3 =where you begin (so b for begin)

So next time you find the slope, just ask yourself where you "begin" (where the line starts) and how you "move" (how the line moves)

Answer:

29 rows of 40

Step-by-step explanation:

1200-35=1165

1165/40=29.125