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3 years ago

Describe 3 different situations where you would need to know how to

Mathematics

2 answers:

Ksenya-84 [330]3 years ago

7 0

Answer:

when calculating the discounted price of an item

(You spend $42.00 on groceries, but you have a coupon for 10% off. What is the final price of your bill?)

when calculating tax

(You buy a pair of sunglasses for $49.00. The sales tax is 7%.How much do you need to pay including tax?)

when calculating the mark-up of a price

(James bought a pair of jeans for $23 . He sold it online on marks it up by 20% . How much did he profit?)

den301095 [7]3 years ago

5 0

Answer:

as your intelligence in your mind

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The elevation of driskill mountain Louisiana is 163 meters above sea level death Valley has an elevation of -86 meters right any

timama [110]

Answer:

$-86$

Step-by-step explanation:

We have been given that the elevation of driskill mountain Louisiana is 163 meters above sea level. The death Valley has an elevation of -86 meters.

We can represent this information in an inequality as: $-86$ . Our inequality means that the elevation of death valley is less than elevation of driskill mountain.

8 0

3 years ago

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#4 find the value of x round answer to the nearest tenth

AnnyKZ [126]

Answer:

Step-by-step explanation:

Since this is a right angled triangle:

tan(∅) = opposite side/adjacent side

In this triangle:

tan(25°) = x/19

x = 8. 86 ≅ 8.9

6 0

3 years ago

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Lisa has a rectangular trampoline that is 6 feet long and 12 feet wide. What is the area of her trampoline in square feet?

Cloud [144]

6*12 = 72ft²

The area of the trampoline is 72ft²

Hope this helps! :)

3 0

4 years ago

Harry is trying to solve the equation 0 = 2x2 − x − 6 using the quadratic formula. He has made an error in one of the steps belo

bija089 [108]

<h3><u>Given</u> - </h3>

➙ a quadratic equation in which Harry lagged due to an error made by him, 2x² - x - 6= 0

<h3><u>To solve</u> - </h3>

➙ the given quadratic equation.

<h3><u>Concept applied</u> - </h3>

➙ We will apply the quadratic formula as given in the question. So, let's study about quadratic equation first because we are supposed to apply the formula in equation.

What is quadratic equation?

➙ A quadratic equation in the variable x is an equation of the form ax² + bx + c = 0, where a, b, c are real numbers, a ≠ 0.

Now, what is quadratic formula?

➙The roots of a quadratic equation ax + bx + c = 0 are given by $\sf{\:\frac{-b \pm\: \sqrt {b ^ 2 - 4ac}}{2a}}$ provided b - 4ac ≥ 0.

<h3><u>Solution</u> - </h3>

here as per the given quadratic equation,

a = 2, b = -1 and c = -6

putting in the formula,

$\implies\sf{x=\frac{-(-1) \pm\: \sqrt {(-1)^2 - 4(2)(-6)}}{2(2)}}$

$\implies\sf{x=\frac{1 \pm\: \sqrt {1+48}}{4}}$

$\implies\sf{x=\frac{1 \pm\: \sqrt {49}}{4}}$

$\implies\sf{x=\frac{1 \pm\: 7}{4}}$

Solving one by one,

$\implies\sf{x=\frac{1 + \: 7}{4}}$

$\implies\sf{x=\frac{8}{4}}$

$\implies{\boxed{\bf{x=2}}}$

________________

$\implies\sf{x=\frac{1 - \: 7}{4}}$

$\implies\sf{x=\frac{-6}{4}}$

$\implies{\boxed{\bf{x=\frac{-3}{2}}}}$

________________________________

<em><u>Note</u> - Hey dear user!! You haven't provided the solution which was solved by Harry (A.T.Q). Please go through the solution as it will help you to find the error done by Harry.</em>

Hope it helps!! (:

4 0

2 years ago

Kari rode his bicycle 3/8 of the distance from Lakeview to Bay cove, which is 24.1 miles. How many more miles does he need to ri

motikmotik

3/8 = 0.375.

24.1 * 0.375 = 9.03.

24.1 - 9.03 = 15.07.

Kari has 15.07 more miles to go.

8 0

3 years ago

Read 2 more answers