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4 years ago

Which item below would be least expensive, with sales tax?

Mathematics

1 answer:

natta225 [31]4 years ago

8 0

28 plus nine percent sales tax

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A rectangular playground has a perimeter of 30 yards. It is 6 yards wide. What is the area of the playground?

Yuki888 [10]

I believe it’s 180. Hope this helps!

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3 years ago

PLEASE PLEASE PLEASE PLEASE HELP ME NO ONE WANTS TO HELP

Troyanec [42]

Answer:

You have to know the basic properties of exponents.

Jill's answer is wrong because you add the powers when there are like bases. You don't multiply.

$2^{-3} *2^{6} = 2^{3}$

-3+6=3

The base stays the same.

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3 years ago

There were 135 cars in a rally each driver paid 25$ fee to participate in the rally how much money did the drivers pay in all

erma4kov [3.2K]

Times 135 by 25. Answer: 3375.

6 0

4 years ago

Read 2 more answers

Which of the following accurately lists all of the discontinuities for the graph below?

Murljashka [212]

Answer:

jump discontinuity at x = 0; point discontinuities at x = –2 and x = 8

Step-by-step explanation:

From the graph we can see that there is a whole in the graph at x=-2.

This is referred to as a point discontinuity.

Similarly, there is point discontinuity at x=8.

We can see that both one sided limits at these points are equal but the function is not defined at these points.

At x=0, there is a jump discontinuity. Both one-sided limits exist but are not equal.

3 0

3 years ago

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Calculate the side lengths a and b to two decimal places.

navik [9.2K]

Answer:

D. a = 11.71 and b = 15.56

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS
Equality Properties

Trigonometry

All angles in a triangle add up to 180°

Pre-Calculus

Law of Sines: $\frac{sin(A)}{a} =\frac{sin(B)}{b} =\frac{sin(C)}{c}$

Step-by-step explanation:

Step 1: Define

AC = b

CB = a

AB = 7

m∠A = 45°

m∠B = 110°

m∠C = ?

Step 2: Find missing ∠

Set up equation: m∠C + 45° + 110° = 180°
Combine like terms: m∠C + 115° = 180°
Isolate unknown: m∠C = 25°

Step 3: Find measure of b

Substitute: $\frac{sin(25)}{7} =\frac{sin(110)}{b}$
Cross-multiply: $bsin(25)=7sin(110)$
Isolate b: $b=\frac{7sin(110)}{sin(25)}$
Evaluate: $b=15.5645$
Round: $b \approx 15.56$

Step 4: Find measure of a

Substitute: $\frac{sin(25)}{7} =\frac{sin(45)}{a}$
Cross-multiply: $asin(25)=7sin(45)$
Isolate a: $a=\frac{7sin(45)}{sin(25)}$
Evaluate: $a=11.7121$
Round: $a \approx 11.71$

6 0

3 years ago