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3 years ago

A pizza restaurant offers 21 different toppings. How many 5-topping pizzas can be created if each topping can be used only once?

Mathematics

2 answers:

TiliK225 [7]3 years ago

8 0

4.1 pizzas if thats an option

STatiana [176]3 years ago

6 0

4. 5 times 4 is 20. :)

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Greatest common factor for 3,27, and 33

Georgia [21]

Answer:

it's 3.

Step-by-step explanation:

Here's why........3 only has 2 factors 1 and it's self and 3 times 9 is 27 and 3 times 11 is 33 they all have 3 as a factor.

7 0

3 years ago

Express 5/21 as a decimal.

Annette [7]

5/21 is a repeating decimal but the first digits are 0.238095

7 0

3 years ago

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If sinA=√3-1/2√2,then prove that cos2A=√3/2 prove that

Ivan

Answer:

$\boxed{\sf cos2A =\dfrac{\sqrt3}{2}}$

Step-by-step explanation:

Here we are given that the value of sinA is √3-1/2√2 , and we need to prove that the value of cos2A is √3/2 .

Given :-

• $\sf\implies sinA =\dfrac{\sqrt3-1}{2\sqrt2}$

To Prove :-

• $\sf\implies cos2A =\dfrac{\sqrt3}{2}$

Proof :-

We know that ,

$\sf\implies cos2A = 1 - 2sin^2A$

Therefore , here substituting the value of sinA , we have ,

$\sf\implies cos2A = 1 - 2\bigg( \dfrac{\sqrt3-1}{2\sqrt2}\bigg)^2$

Simplify the whole square ,

$\sf\implies cos2A = 1 -2\times \dfrac{ 3 +1-2\sqrt3}{8}$

Add the numbers in numerator ,

$\sf\implies cos2A = 1-2\times \dfrac{4-2\sqrt3}{8}$

Multiply it by 2 ,

$\sf\implies cos2A = 1 - \dfrac{ 4-2\sqrt3}{4}$

Take out 2 common from the numerator ,

$\sf\implies cos2A = 1-\dfrac{2(2-\sqrt3)}{4}$

Simplify ,

$\sf\implies cos2A = 1 -\dfrac{ 2-\sqrt3}{2}$

Subtract the numbers ,

$\sf\implies cos2A = \dfrac{ 2-2+\sqrt3}{2}$

Simplify,

$\sf\implies \boxed{\pink{\sf cos2A =\dfrac{\sqrt3}{2}} }$

Hence Proved !

8 0

3 years ago

If grapes cost .95 per 500 grams how much would 800 grams cost

nevsk [136]

500g = $0.95

100g = $0.95 ÷ 5 = $0.19

800g = $0.19 x 8 = $1.52

---------------------------------------------------------
Answer: 800g will cost $1.52
---------------------------------------------------------

7 0

3 years ago

Find the total cost to the nearest cent. $58 bill; 20% tip

harkovskaia [24]

Answer:

$69.60

Step-by-step explanation:

20% of $58 is $11.60. So you add $11.60 + 58 which equals $69.60, so that is the total cost.

8 0

3 years ago

Read 2 more answers