I really need help pls

Please help

EleoNora [17]

Answer:

Step-by-step explanation:

(5⅔)/4 = (17/3)/4 = 17/12

7 0

3 years ago

the clearance price of a book is $9. The original price of the book was $25. By what percentage was the price of the book decrea

solong [7]

Answer:

=64 %

Step-by-step explanation:

The percentage decrease is found by

Percent decrease = (original - new)/ original * 100 percent

The original price is 25

The new price is 9

Percent decrease = (25-9)/25 * 100%

=16/25 * 100%

=64 %

7 0

4 years ago

Analyze the diagram below and complete the instructions that follow.<br><br> Find m

Stells [14]

Answer:

D. 70.53

Step-by-step explanation:

To solve this problem, one must use the right angle trigonometric rations. These ratios can be used to describe the ratio between the sides and an angle in a right triangle. Please note, each side is named relative to the angle that one is looking at, thus the same side can acquire different names based on the angle one uses to describe it. The trigonometric ratios are the following:

$sin(\theta)=\frac{opposite}{hypotenuse}\\\\cos(\theta)=\frac{adjacent}{hypotenuse}\\\\tan(\theta)=\frac{opposite}{adjacent}$

In this case, one is asked to find the measure of (<CBA), one is given the hypotenuse (the side opposite the right angle), and the side adjacent to this angle. Therefore, one should use the cosine (cos) function to find this angle.

$cos(\theta)=\frac{adjacent}{hypotenuse}$

Substitute,

$cos(CBA) = \frac{3}{9}$

Simplify

$cos(CBA) = \frac{1}{3}$

Inverse operations,

$CBA=cos^-1(\frac{1}{3})$

Compute,

m<CBA = 70.53

7 0

3 years ago

An isosceles triangle has two sides of equal length, a, and a base, b. The perimeter of the triangle is 15. 7 inches, so the equ

brilliants [131]

The lengths that make the sense for the value of b are 0.5 inches and 2 inches.

<h2>Given </h2>

An isosceles triangle has two sides of equal length, a, and a base, b.

The perimeter of the triangle is 15.7 inches, so the equation to solve is 2a + b = 15.7.

<h3>What is the triangle inequality theorem?</h3>

If two sides of a triangle are unequal, the longer side has a greater angle opposite to it.

$\rm a+a > b\\\\2a > b$

The equation of the perimeter of the triangle;

$\rm 2a+b = 15.7\\\\2a = 15.7-b\\\\a = \dfrac{15.7-b}{2}$

1. Substitute b = 0.5 in the equation;

$\rm a = \dfrac{15.7-b}{2}\\\\ a = \dfrac{15.7-0.5}{2} \\\\ a = \dfrac{15.2}{2}\\\\a = 7.6$

Then,

Verify the triangle inequality theorem;

0.5 + 7.6 > 7.6 is true

7.6 + 7.6 > 0.5 is true

2. Substitute b = 2 in the equation;

$\rm a = \dfrac{15.7-b}{2}\\\\ a = \dfrac{15.7-02}{2} \\\\ a = \dfrac{13.7}{2}\\\\a = 6.85$

Then,

Verify the triangle inequality theorem;

0.5 + 76.85 > 6.85 is true

6.85 + 6.85 > 2 is true

Hence, the lengths that make the sense for the value of b are 0.5 inches and 2 inches.

To know more about the Triangle inequality theorem click the link given below.

brainly.com/question/1026055

5 0

2 years ago

Harlem is redecorating his room. A new desk costs (d) dollars. A bookshelf costs $114 less than the desk. A new lamp costs twice

Alexxx [7]

Answer:

Harlem is redecorating his room. A new desk costs (d) dollars. A bookshelf costs $114 less than the desk. A new lamp costs twice as much as the bookshelf. Write an expression showing how much all of Harlem s new furniture will cost.

5 0

3 years ago