16-2t=5t+9, find the value of t.

Answer:

9,11,19

Step-by-step explanation:

let x be the hours and y the percentage

x=0 , y=100

x=8 , y=80

x=9  , y=0

x=10 , y=100 , x=11 still charging so it is still plugged in

x=16 , y=60 and so on ....

x=18  , y=20

and it will charged again

the answer is 9,11,19

Answer: =

x

2

−

4

x

−

21

Step-by-step explanation: (

x

+

3

)

.

(

x

−

7

)

=

(

x

)

.

(

x

−

7

)

+

(

3

)

.

(

x

−

7

)

ANSWER

x^2-4x-21

EXPLAIN

First expand the brackets by multiplying the number from the first bracket to the second bracket

you will get this = x^2 + 3x- 7x- 21 ,then u collect the like terms which is (3x & -7x).

your answer ( x^2 - 4x - 21 ).

Answer:

c  tomato 2.5

pepper = 3.5

Step-by-step explanation:

Let t= the price of tomato plants

p  =the price of pepper plants

3t+ 4p = 21.50

5t+ 2p = 19.50

Multiply the second equation by -2

-10t -4p =-39

Add this to the first equation to eliminate p

-10t -4p =-39

3t+ 4p = 21.50

---------------------

-7t    = -17.5

Divide by -7

t = 2.5

Now find p

5t+ 2p = 19.50

5( 2.5) + 2p = 19.50

12.5+2p = 19.50

Subtract 12.5 from each side

2p =7

p =3.5

We want the price of 1 tomato and 1 p

3.5+2.5

Answer:

C

Step-by-step explanation:

Let t = price of tomato plants

and p = price of pepper plants

3t + 4p = 21.50 ...... (1)

5t + 2p = 19.50 ..... (2)

Multiplying eqn. (2) by - 2

(5t + 2p) * (- 2) = (19.50) * (- 2)

- 10t - 4p = - 39

-10t - 4p = - 39

3t + 4p = 21.50

____________

-7t    = -17.5

t = 2.5

Putting t = 2.5 in eqn. (2), we get:

= 5 * (2.5) + 2p = 19.50

12.5 + 2p = 19.50

2p = 7

= 3.5

Price of one tomato and one pepper plant = 3.50 + 2.50

Answer:

8 cups

Step-by-step explanation:

hope I could help

9514 1404 393

Answer:

Step-by-step explanation:

Assuming angles are numbered clockwise at each intersection before moving to the next intersection, corresponding angles will differ in their numbers by a factor of 4.

Among the offered choices, the differences of angle numbers are ...

2, 12, 5, 4, 1, 7

Of those pairs listed, angles 2 and 14, and angles 3 and 7 are corresponding angles.

Answer:

Step-by-step explanation:

The dimensions of the portrait are attached.

The total area of the portrait is represented by its width 5+x and its length x+1.

We know by definition that the area of a rectangle is

[tex]A= w \times l[/tex]

Where [tex]w[/tex] is the width and [tex]l[/tex] is the length.

Using the given expressiones, we have

[tex]A=(5+x)(x+1)=5x+5+x^{2} +x=x^{2} +6x+5[/tex]

Therefore, the right answer is D.

Answer:

t =2 seconds

Step-by-step explanation:

We have, a function that represents the height y of the pebble after dropping the balcony as follows :

[tex]y=80-16t^2[/tex]

The pebble lands on the top of a sign that is 16 feet high.

It is required to find the time does the pebble drop before hitting the sign. The above equation becomes,

[tex]80-16t^2=16\\\\-16t^2+80=16\\\\-16t^2=64\\\\t^2=4\\\\t=2[/tex]

So, the pebble hits the sign after 2 seconds.

Answer: The coordinates will be  (0,2) after a  180 degrees rotation.

Step-by-step explanation:

                  90         180

 (0,-2) →    ( -2,0)→   ( 0,2)

Answer:

(0,2)

Step-by-step explanation:

Rule for a rotation of 180° about the origin: [tex](x,y)\rightarrow(-x,-y)[/tex]

We are given the point (0, -2).

Applying the rule:

[tex](0,-2)\rightarrow(0,2)[/tex]

A' should be at (0,2).

Answer:

96 cartons

Step-by-step explanation:

Capacity of one jug = 4 L

Capacity of 6 jugs = 4 * 6 = 24 L

Capacity of milk in the container = 24 L

one litre = 1000 ml

24 liter = 24 * 1000 = 24000 ml

Number of cartons = Total capacity of milk/Capacity of milk in one carton

                               = 24000÷250

                               = 96 cartons

1 container receives 6 jugs of milk (1 jug of milk=4L)

6×4L=24L

The 1 container of milk is used to fill cartons of milk

The 1 container of milk is used to fill cartons of milk (1 carton=250 ml)

Step 1; Convert ml to L

250ml ÷ 1000 = 0.25L

Step 2; Divide

24L ÷ 0.25L = 96

Ans: 96 cartons of milk can be filled.

Answer:

Of course Piano,keyboard and guitar.

Answer:

The correct option is AAS.

Step-by-step explanation:

Consider the diagram below.

If two angles are congruent it implies that they are same in degrees or radians.

So, the angles ∠XWZ and ∠XYZ are equal.

So, in the diagram below, one of the triangles have two angles that are equal to the corresponding angles on the other triangle and the two triangles share a side.

Then according to the Angle-Angle-Side (AAS) statement the triangles △ WXZ and △ YZX are congruent.

Thus, the correct option is AAS.

The congruence theorem that can be used to prove that △WXZ ≅ △YZX is; AAS

ΔWXZ and ΔYZX share side XZ

∠WXZ and ∠XZY are right angles

∠XWZ and ∠XYZ are congruent

Read more about AAS Congruency at; https://brainly.com/question/7727792

Answer:

23

Step-by-step explanation:

the difference between each number in the sequence is 4. Taking 4 away from 27 gives you 23

Hope this helps!

Answer:

17.91

Step-by-step explanation:

Answer:

c = 3

c = -3

(There are two because absolute value :P)

Step-by-step explanation:

u = 7i + 24j

u = (7, 24)

||c * u|| = 75

75 = || c [tex]\sqrt{7^{2}+24^{2} }[/tex] ||

75 = || c [tex]\sqrt{625}[/tex] ||

75 = || c * 25 ||

3 or -3 = c

Answer:

x = -16

Step-by-step explanation:

2/3x +1 = 1/6x - 7

Multiply each side by 6 to get rid of the fractions

6(2/3x +1) = 6(1/6x - 7)

4x +6 = x - 42

Subtract x from each side

4x-x +6 = x-x-42

3x +6 = -42

Subtract 6 from each side

3x +6-6 = -42-6

3x = -48

Divide each side by 3

3x/3 = -48/3

x = -16

So the right answer is -16

Look at the attached picture

Hope it will help you

Good luck on your assignment

Answer:

23.4375

Step-by-step explanation:

you need to do base x base x height divided by 2. 7.5 x 2.5 x 2.5 = 46.875. divide that by 2 and you get 23.4375  

Step-by-step explanation:

Answer is $17.5

It says Mrs. Samuelson had $350 to spend on a field trip for herself and 18 students. so there are 19 people. Multiply 12.50*19 you get 237.5.

It also says lunch cost about $5.00 per person. Multiply 5.00*19 you get 95.

Add 95 to 237.5.

You get 332.5

Subtract 350 by 332.5.

Equation: 350-(19*12.50)+(19*5.00)

Answer: $17.5

Answer:

y = -(x + 1)^2

Step-by-step explanation:

I graphed the parabola on the graph below so you can see that it has a vertex at (-1,0) and opens down.

Answer:

m = 2

Step-by-step explanation:

Given

y = mx + 2

Since (- 3, - 4) is a point on the line then it satisfies the equation.

Substitute x = - 3 and y = - 4, the coordinates of the point, into the equation and solve for m, that is

- 4 = - 3m + 2 ( subtract 2 from both sides )

- 6 = - 3m ( divide both sides by - 3 )

2 = m

Answer:

Even if they are different weights they will fall at the sam time

Step-by-step explanation:

by fall I mean hit the ground

Answer:

1/49

Step-by-step explanation:

7^-2= 1/7^2 = 1/49

Solution,

7^-2

=1/7^2

=1/49

Hope it helps

Good luck on your assignment

Answer:

y = -2.5x - 22

Step-by-step explanation:

Answer:

$585

Step-by-step explanation:

simply find 13% of 4500. 0.13 x 4500 is $585

Answer:26 units

Step-by-step explanation:

Answer:

y = -10

Step-by-step explanation:

To solve this, you must find the value of x first. To do this you must move the first equation so that x is by itself.

-2x + 3 = 7

Subtract 3 from both sides:

-2x = 4

Divide both sides by -2:

x = -2

Now plug in -2 for x into the second equation, like so:

3x + 1 = 5 + y

3(-2) + 1 = 5 + y

-6 + 1 = 5 + y

Add like terms:

-5 = 5 + y

Subtract 5 from both sides:

-10 = y

The value of y for the given system of equations is -10.

There are many different ways to define an equation. The definition of an equation in algebra is a mathematical statement that demonstrates the equality of 2 mathematical expressions.

In another word, the equation must be constrained with some constraints.

As per the given,

-2x + 3 = 7 and 3x + 1 = 5 + y

-2x = 7 - 3

x = -2

Substitute as

3(-2) + 1 = 5 + y

y = -6 + 1 - 5

y = -10

Hence "The value of y for the given system of equations is -10".

For more about the equation,

brainly.com/question/10413253

#SPJ2

Answer:

I have given it step by step below.

Step-by-step explanation:

(i) Mean = sum of observations/total no. of observation

= 23 + 20  + 4 + 19 + 28 + 35 + 25 + 0  +1 + 30/ 10

= 185/10

= 18.5

(ii) additional 35 runs

New Mean

=previous total  + 35/10 + 1     (the 1 gets added in denominator because of                                           the additional observation)

= 185 + 35/11

= 220/11

= 20

Hope this helps you!

Answer:

Weak positive correlation

Step-by-step explanation:

Because it can’t be strong otherwise the points would have been very close to the line of best fit