the sales tax for an item was 12.80 and it cost 320 before tax​

Answer:

-12

Step-by-step explanation:

multiplication

Answer:

-12

Step-by-step explanation:

-4 x -1 x -3

4 x -3

=-12

Answer:

1  9/10

Step-by-step explanation:

I was first make me brainliest. :)

Answer:

4

Step-by-step explanation:

Answer:

20

Step-by-step explanation:

12+4 x 2

12+8= 20

Answer:

3y^3-4xy+2y

y(3y²-4x+2)

Answer:

7 hours

Step-by-step explanation:

We are given that

At sunset, the temperature=-5 degrees Fahrenheit

Each hour, temperature falling=2degrees Fahrenheit

We have to find time taken to reach the temperature -19° F.

Let x be the time time taken to reach the temperature -19° F

According to question

[tex]-5+x(-2)=-19[/tex]

Where we taking 2 negative because temperature decreases.

[tex]-5-2x=-19[/tex]

[tex]-5+19=2x[/tex]

[tex]14=2x[/tex]

[tex]x=\frac{14}{2}[/tex]

[tex]x=7[/tex]

Hence, it will take 7 hours for the  temperature to reach -19° F.

Answer:

La suma de las medidas de los ángulos interiores de un decágono (polígono de 10 lados) es 1,440.

Answer:

she is left with 4.67 LB of flour.

Step-by-step explanation:

7 divided by 3 = 2.3333333

2.3333333 x 2 = 4.67

Answer:

B = 7mm

Step-by-step explanation:

This is probably an enlargement problem.

To solve this:

the blue triangle has all of it's measurements you need. Let's start with that.

6/36 =

We know that one side, the bottom side of the green triangle is 42mm.

6/36 = b/42

We could simplify 6/36 into 1/6

1/6 = b/42

AHA! the denominators are easy! 6 times 7 is equal to 42, so 1 times 7 should equal b!

1/6 = 7/42

Check:

6/36 = b/42

36b = 6*42

36b = 252

   b = 252/36

   b = 7

So yes! B is 7 mm. Pls mark me brainliest, as I never have a single brainliest.

Answer:

y = 2x + 2

Step-by-step explanation:

Add two to both sides.

Answer:

2

Step-by-step explanation:

Answer:

i pretty sure the missing number is 4

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

x2

x=3

sub 3 into x

(3)2

=6

Answer:

b

Step-by-step explanation:

Answer:

i would try the first option,

Step-by-step explanation:

i'm not very good at math but i don't think the problem has exponents.

Answer:

The second option - 8/81

Step-by-step explanation:

Answer:

below

Step-by-step explanation: 6/81

(5a+9)4=116

20a+36=116

20a=116-36

20a/20=80/20

a=4

Answer:y = 7x + 5

Step-by-step explanation: does it matter which point it goes through?

Answer:

196 km

Step-by-step explanation:

Distance = speed x time

So to work it out, it would be 3.5 x 56

= 196km

Answer:

A bus drives for 3 1/2 hours at an average speed of 56mph.

To Find :

How far does the bus drive?

Step-by-step explanation:

Times of journey(T)=3 1/2 =7/2hours

Average speed of bus(v)=56mph

We know the formula:

Average speed (v)=total distance (d)/Time(T)

So:

Total distance (d)=qverage speed(v)×time(t)

Total distance (d)=56×7/2

Total distance(d)=28×7=196 miles

It means distance travel by bus is 196 miles.

I hope it's helpful!

Answer:

What are the options?

Step-by-step explanation:

I'll do it once it the options

Answer:

x= 6

Step-by-step explanation:

3x > x + 7

3(6) > 6 + 7

18 > 13

Hope this helps. Thank you !!

Answer:

it's 4 because if you multiply 3 and 4 it's 12. and 4 plus 7 is 11. making 4 the lowest

Answer:

198.5 cm²

Step-by-step explanation:

From the figure above we can treat the two semi circles as 1 circle.

Now, the diameter is 10 cm

Thus;

Radius; r = 10/2

r = 5cm

Now, formula for area of a circle is;

A = πr²

Thus;

Area of 2 semi circles = Area of 1 circle = π × 5²

A_circle = 78.54 ≈ 78.5 cm²

When we take out the 2 semi circles, what we have left is a rectangle.

Now, the length of the rectangle will be;

Length; L = 22 - 5 - 5 = 12 cm

*This is because the radius of the semi circle is 5 and distance from the edge of the 22 cm length to the centre of the semi circle is 5 cm

Thus, area of rectangle is given by;

A_rect = LW

W in the image is 10 cm

Thus;

A_rect = 12 × 10

Total area of shape is;

A_total = 120 + 78.5

A_total = 198.5 cm²

Answer:

Your answer

Discount rate = 11.11%

Mark it as Brainlist. Follow me for more answer.

Step-by-step explanation:

Answer:

Area = 113.01 m²

Step-by-step explanation:

From the picture attached,

Area of the quadrilateral ABCD = Area of triangle ABC+ Area of triangle ACD

Construction to be done → Draw a perpendicular from a point A to the opposite side CD

Area of Δ ABC = [tex]\frac{1}{2}(AB)(BC)[/tex]

                         = [tex]\frac{1}{2}(12)(10)[/tex]

                         = 60 m²

Area of triangle ACD = [tex]\frac{1}{2}(AE)(CD)[/tex]

From ΔAEC,

sin(29°) = [tex]\frac{AE}{AC}[/tex]

AC = [tex]\sqrt{(12)^2+(10)^2}[/tex] [By Pythagoras theorem]

AC = [tex]\sqrt{244}[/tex]

AC = 15.62 m

Therefore, AE = 15.62sin(29)

                        = 7.57 m

Area of ΔACD = [tex]\frac{1}{2}(7.57)(14)[/tex]

                        = 53.01 m²                                

Area of ABCD = 60 + 53.01

                        = 113.01 m²            

Answer:

A & B

Step-by-step explanation:

TBH I was kind of getting that is was D, but follow your gut I just know its defiantly A

Answer:

a and b

Step-by-step explanation:

Answer:

The number of chairs

Step-by-step explanation:

The equation is 2z + 3

2 ( = multiply by)

z ( # of chairs)

+3 ( the 3 extra chairs in the back)

Answer:

The number of tables

Step-by-step explanation:

Sens there is twice as many chairs as tables, the number 2 represents the chairs. The 3 represents the 3 extra chairs in the back. so the only logical object to represent z is the number of tables.

Answer:

the 34 ounce bottle

Step-by-step explanation:

because one ounce out of the 34 ounce bottle equals $1.06 and one ounce out of the 9 ounce bottle equals $1.09 so essential buying the 24 ounce bottle you would be getting more for your money