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2 years ago

5.

Mathematics

1 answer:

Yuki888 [10]2 years ago

4 0

The sales tax rate in Emily's city = 5 1/2 %

Cost of Emily's new boots = $68

Step 1: Find the amount of sales tax Emily will pay for her boots

Formula: Sale tax = Percent sales tax x Cost of the product

Sales tax = 5 1/2 % x $68

= $3.74

Step 2: Calculate the total cost for Emily's boots

Total cost = Cost of boots + Sales Tax

Total cost = $68 + $3.74

= $71.74

Therefore, the total cost Emily will pay for her boots is $71.74

To learn more, visit the link below:

brainly.com/question/15230486

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Which pair shows equivalent expressions? 3 (x + 2) = 3 x + 6 3 x + 2 x = x squared (3 + 2) 3 x + 2 = 3 (x + 2) Negative 3 (2 + x

kogti [31]

Answer:

The first pair shows equivalent expressions.

Step-by-step explanation:

3(x+2), you would have to distribute 3 among x and 2, also known as expanding the expression. So you'd do 3*x + 3*2, which equals 3x+6

The first equation is 3(x+2)=3x+6

Therefore, the first pair shows equivalent expressions.

8 0

3 years ago

Read 2 more answers

PLEASE HELP I WILL GIVE 20 POINTS

adoni [48]

Answer:

The Answer is: C. 10 x 10^7

Step-by-step explanation:

The others are in Scientific Notation. The decimal is just to the right of the number and then 10 with an exponent defines the actual size of the number.

Hope this helps! Have an Awesome Day!! :-)

5 0

4 years ago

How to solve negative exponents? (Extended,long)

defon

Easily, you write the inverse of it without a minus
so if you were to find x^(-2) it would be (1/x)^2
The rest is all the same

6 0

4 years ago

Someone pls help, its on trig ratios.

Mars2501 [29]

Answer:

$BC=12.8,\\AC=15.1$

Step-by-step explanation:

In right triangles only, the tangent of an angle is equal to its opposite side divided by its adjacent side.

Therefore, we have the following equation:

$\tan 58^{\circ}=\frac{BC}{8}$

Solving, we get:

$BC=8\tan 58^{\circ}\approx \boxed{12.8}$

Also in right triangles only, the cosine of an angle is equal to its adjacent side divided by the hypotenuse of the triangle.

$\cos 58^{\circ}=\frac{8}{AC},\\AC=\frac{8}{\cos 58^{\circ}},\\AC\approx \boxed{15.1}$

We can also use the Pythagorean theorem now that we've found BC. However, if you choose to do so, make sure you don't use a rounded value for BC, as that could cause a notable deviation in your final answer.

Using the Pythagorean theorem to verify our answers:

$8^2+(8\tan 58^{\circ})^2=\left(\frac{8}{\cos 58^{\circ}}\right)^2\:\checkmark$

6 0

3 years ago

Need to be show how to solve step by step. And find a least common multiple

Firlakuza [10]

A cheap way to go about it is, use the LCD and multiply both sides by it.

now, notice the denominators, x, 4, 4x, clearly the LCD is 4x, so let's multiply both sides by that, to do away with the denominators,

$\bf \cfrac{5}{x}+\cfrac{3}{4}=\cfrac{8}{4x}\implies \boxed{4x}\left( \cfrac{5}{x}+\cfrac{3}{4} \right)=\boxed{4x}\cdot \cfrac{8}{4x}\implies 20+3x=8
\\\\\\
3x=-12\implies x=\cfrac{-12}{3}\implies x=-4$

8 0

3 years ago