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2 years ago

Leon wants to buy a shirt that costs $80. The sales tax is 5.5%. How much is the sales tax?

Mathematics

1 answer:

GenaCL600 [577]2 years ago

7 0

Answer:

4,4

Step-by-step explanation:

80×5,5%

80/1×5,5/100

4/1×5,5/5

22/5 = 4 2/5

4 2/5 = 4 4/10 = 44/10 = 4,4

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What is the following quotient? sqrt 6 + sqrt 11 / sqrt 5 +sqrt 3

just olya [345]

Answer:

$\frac{\sqrt6 +\sqrt{11}}{\sqrt{5} + \sqrt{3}} \times \frac{\sqrt{5} - \sqrt{3}}{\sqrt{5} - \sqrt{3}} = \frac{\sqrt{30} - \sqrt{18} + \sqrt{55} - \sqrt{33}}{2}$

Step-by-step explanation:

Let's translate what you've written in words to an expression with mathematical symbols.

$\frac{\sqrt6 +\sqrt{11}}{\sqrt{5} + \sqrt{3}}$

To solve this, you need to multiply both the numerator and denominator with the conjugate of the denominator.

$\frac{\sqrt6 +\sqrt{11}}{\sqrt{5} + \sqrt{3}} \times \frac{\sqrt{5} - \sqrt{3}}{\sqrt{5} - \sqrt{3}} = \frac{\sqrt{30} - \sqrt{18} + \sqrt{55} - \sqrt{33}}{2}$

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2 years ago

Read 2 more answers

Complete the equation of the line through (-6, -5) and (-4, -4). Use exact numbers

77julia77 [94]

In general the equation through (a,b) and (c,d) is

$(y-b)(c-a)=(x-a)(d-b)$

Can you see that this is a line and that both (a,b) and (c,d) are on it?

Here we're given (a,b)=(-6,-5) and (c,d)=(-4,-4)

$(y- -5)(-4 - -6) = (x - -6)(-4 - 5)$

$2(y+5)=x+6$

$2y + 10 = x + 6$

$x - 2y = 4$

$y = \frac 1 2 x - 2$

Either of the last two are fine answers.

3 0

2 years ago

A cyclist travels 20 km from home to the park.

yulyashka [42]

Answer:

40 kph

Step-by-step explanation:

I'm not to familiar with km but if it took you 30 minutes to travel 20km you would have to be going 40kph. It's basic math too. If you went 20 kph for 20km it would take you an hour to get there, but since they made it in 30 minutes, you just double the speed.

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2 years ago

Each of the 10 students in the baking club made 2 chocolate cakes for a fundraiser. They all used the same recipe, using c cups

almond37 [142]

Answer:

h6hhh6hh7hh

Step-by-step explanation:

7 7mm88mjui8iiikji

5 0

2 years ago

In mid-day meal scheme 1/ 10 litre of milk is given to each student of a primary school. If 30 litres of milk are distributed ev

nirvana33 [79]

Answer:

300 students

Step-by-step explanation:

To know the number of students, we must divide the total amount of milk spent by the amount spent for each and in this way we will obtain the value we are looking for, like this (both have the same units of L, so there is no problem ):

30 / (1/10) = 300

that is to say that there are a total of 300 students

5 0

3 years ago