All categories

3 years ago

Please help!! it says what I wrote is too short so

Mathematics

1 answer:

kvv77 [185]3 years ago

3 0

Answer:

50 cents The red on the right end.

Step-by-step explanation:

Let the chocolate chip cookies = x

Let the jumbo popcorn = y

Julie

y + 2x = 5

Marvin

y + 4x = 6 Subtract

-2x = - 1 The y's disappear. You are left with 1 dollar (negative). Divide by - 2

-2x/-2 = - 1 / -2

x = 1/2

x = 0.5 or 50c

Each cookie costs 50c

You might be interested in

Please help me ..........

scoray [572]

Answer:

It’s either A OR B

Step-by-step explanation:

5 0

3 years ago

Subtract 5×⁴-4×³+3×²-2×from 8×⁴-7×³+2

Alexeev081 [22]

Answer:

$\pmb{3x^4-3x^3-3x^2+2x+2 }$

<h3>Step to step explanation:</h3>

we have to subtract 5×⁴-4×³+3×²-2×from 8×⁴-7×³+2

$8x^4-7x^3+2-(5x^4-4x^3+3x^2-2x)\\\\8x^4-7x^3+2-5x^4+4x^3-3x^2+2x\\\\3x^4-3x^3-3x^2+2x+2$

5 0

3 years ago

Can someone help me with this problem?

Fynjy0 [20]

Answer is C) Dilate rectangle ABCD with a SF of 1/2 followed by a 180 degree rotation about the origin.

By dividing the sides of rectangle ABCD by the scale factor 1/2, the rectangle becomes the same size as rectangle A'B'C'D'.

Rotating rectangle ABCD by 180 degrees around the origin transforms the rectangle onto rectangle A'B'C'D.

5 0

3 years ago

Two thirds of a number decreased by six is two. what is the number?

Kisachek [45]

Answer: The number is:  " 12 ".

____________________________________
Let "x" represent "the unknown number" (for which we wish to solve.

The expression:

$\frac{2}{3}$ x <span>− 6 = 2 ; Solve for "x" ;
</span>_______________________________________________
Method 1)

Add "6" to EACH SIDE of the equation;
_______________________________________________
→ $\frac{2}{3}$ x − 6 + 6 = 2 + 6 ;

to get:

→ $\frac{2}{3}$ x = 8 ;
______________________________________________
Multiply each side of the equation by " $\frac{3}{2}$ " ; to isolate "x" on one side of the equation ; and to solve for "x" ;
______________________________________________
→ $\frac{3}{2}$ * $\frac{2}{3}$ x = 8 * $\frac{3}{2}$ ;

→ x = 8 * $\frac{3}{2}$ ;

= $\frac{8}{1}$ * $\frac{3}{2}$ ;

= $\frac{8*3}{1*2}$ ;

= $\frac{24}{2}$ ;

= <span>1<span>2 .</span></span>
______________________________________________
x = 12 .
______________________________________________
Method 2)
______________________________________________
$\frac{2}{3}$ x − 6 = 2 ; Solve for "x" ;

Add "6" to EACH SIDE of the equation;
_______________________________________________
→ $\frac{2}{3}$ x − 6 + 6 = 2 + 6 ;

to get:
→ $\frac{2}{3}$ x = 8 ;
______________________________________________
Multiply each side of the equation by "3" ; to get rid of the "fraction" ;
    → 3 * $\frac{2}{3}$ x = 8 * 3 ;
→ $\frac{3}{1}$ * $\frac{2}{3}$ x = 8 * 3 ;
→ $\frac{3*2}{1*3}$ x = 8 * 3
→ $\frac{6}{3}$ x = 24 ;

→ 2x = 24 ;

→ Divide each side of the equation by "2" ; to isolate "x" on one side of the equation; & to solve for "x" :

2x / 2 = 24 / 2 ;

x = 12 .
__________________________________________________
Method 3).
__________________________________________________
$\frac{2}{3}$ x − 6 = 2 ; Solve for "x" ;
_______________________________________________
Add "6" to EACH SIDE of the equation;
_______________________________________________
→ $\frac{2}{3}$ x − 6 + 6 = 2 + 6 ;

to get:

→ $\frac{2}{3}$ x = 8 ;
______________________________________________
Now, divide each side of the equation by " $\frac{2}{3}$ " ;
to isolate "x" on one side of the equation; & to solve for "x" ;
___________________________________________________
{ $\frac{2}{3}$ x } / { $\frac{2}{3}$ } = 8 / { $\frac{2}{3}$ } ;

to get: x =  8 / { $\frac{2}{3}$ } ;

= 8 * ( $\frac{3}{2}$ ;

= $\frac{8}{1}$ * $\frac{3}{2}$ ;

= $\frac{8*3}{1*2}$ ;

= $\frac{24}{2}$ ;

= 12 ;
___________________________________________
x = 12 .
___________________________________________
NOTE: Variant: (in "Methods 2 & 3") :
___________________________________________
At the point where:
___________________________________________
= 8 * ( $\frac{3}{2}$ ) ;

= $\frac{8}{1}$ * $\frac{3}{2}$ ;
__________________________________________
We can cancel out the "2" to a "1" ; and we can cancel out the "8" to a "4" ;
__________________________________________
{since: "8÷2 = 4" ; and since: "2÷2 =1" } ;
__________________________________________
and we can rewrite the expression:
__________________________________________
$\frac{8}{1}$ * $\frac{3}{2}$ ;
__________________________________________
as:    $\frac{4}{1}$ * $\frac{3}{1}$ ;
__________________________________________
which equals:
__________________________________________
→ $\frac{4*3}{1*1}$ ;

=    $\frac{12}{1}$ ;

= 12 .
__________________________________________
x = 12 .
__________________________________________
Answer: The number is: " 12 ".
__________________________________________

8 0

4 years ago

6. 2A and ZB are complementary angles. The measure of ZB is (4x), and the

Yakvenalex [24]

Answer:

x = 10°

Step-by-step explanation:

ZA + ZB = 90°

50° + 4x = 90°

4x = 90° - 50°

4x = 40°

x = 10°

6 0

3 years ago