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3 years ago

“HOT PIZZA” is offering a 20% discount on all its pizzas

Mathematics

1 answer:

Anit [1.1K]3 years ago

6 0

Answer:

p = £7.00

Step-by-step explanation:

Represent the original price by p. Then 0.80p = £5.60, or p = £7.00.

If a price is discounted by 20%, the discounted price is (1 - 0.20), or 0.80, times the original price.

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HELPP ANYONE

elena-14-01-66 [18.8K]

x^2 - 5x + 6
ax*2 + bx + c

a = 1, b = - 5, c = 6

6 0

3 years ago

How do I solve part A

seraphim [82]

Answer:

The solution of this expression is $x_{1} = -1$ and $x_{2} = -\frac{1}{2}$ .

Step-by-step explanation:

The procedure for solution of exercise A is described below:

1) We expand the expression.

2) The resulting expression is rearranged into the form of a second order polynomial.

3) Roots are found by Quadratic Formula.

Step 1:

$2\cdot x \cdot (x+1.5) = -1$

$2\cdot (x^{2}+1.5\cdot x) = -1$

$2\cdot x^{2} + 3\cdot x = -1$

Step 2:

$2\cdot x^{2}+3\cdot x +1 = 0$

Step 3:

$x_{1, 2} = \frac{-3\pm \sqrt{3^{2}-4\cdot (2)\cdot (1)}}{2\cdot (2)}$

$x_{1,2} = -\frac{3}{4}\pm \frac{1}{4}$

$x_{1,2} = \frac{-3\pm 1}{4}$

The solution of this expression is $x_{1} = -1$ and $x_{2} = -\frac{1}{2}$ .

4 0

3 years ago

Convert 13 to fifths.<br> Write your answer as a fraction.

Zina [86]

Answer:

65/5

Step-by-step explanation:

You just need to multiply 13 by 5.

4 0

3 years ago

Work out 4 1/2 - 1 1/3

Ainat [17]

Answer: 19/6

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Find x so the distance between (x,−1) and (4x−2,5) is 10

lions [1.4K]

Answer:

$x = \dfrac{10}{3}~~or~~x = -2$

Step-by-step explanation:

(x,−1) and (4x−2,5) is 10

$\sqrt{(4x - 2 - x)^2 + (-1 - 5)^2} = 10$

$(3x - 2)^2 + (-6)^2 = 100$

$9x^2 - 12x + 4 + 36 = 100$

$9x^2 - 12x + 40 = 100$

$9x^2 - 12x - 60 = 0$

$3x^2 - 4x - 20 = 0$

$3x^2 - 10x + 6x - 20 = 0$

$x(3x - 10) + 2(3x - 10) = 0$

$(3x - 10)(x + 2) = 0$

$x = \dfrac{10}{3}~~or~~x = -2$

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3 years ago