1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ipatiy [6.2K]
4 years ago
11

Questions are in the screenshot.

Mathematics
1 answer:
White raven [17]4 years ago
6 0

For question 4, x = 18 units,

For question 5, x = 8.333 units.

Step-by-step explanation:

Step 1:

Since the given polygons are similar to each other, all the ratios of one polygon to the other will remain equal for all the values of the two similar polygons.

We take the ratio of the same sides of both polygons i.e. the ratio of the lengths or the ratio of the widths.

Step 2:

For question 4, the first rectangle has a length of 9 units while the width is 3 units.

For the second rectangle, the length is x as x is greater than the width in the first rectangle. The width is 6 units.

The ratio of the first rectangle to the second is;

\frac{3}{6} : \frac{9}{x} , x = (9)(\frac{6}{3} ) = 18. So x = 18 units.

Step 3:

The shapes in question 5 are made of a square and a triangle.

For the first shape, the side length is 6 units while the side of the triangle is 10 units.

For the second shape, the side length is 5 units while the side of the triangle is x units.

The ratio of the first shape to the second is;

\frac{6}{5} : \frac{10}{x} , x = (10)(\frac{5}{6} ) = 8.333. So x = 8.333 units.

You might be interested in
Solve the equation 2 sec² x = 3 - tan x for the domain 0° ≤ x ≤ 360° ​
vodka [1.7K]

2 \sec^2 x = 3- \tan x \\\\\implies 2(1 +\tan^2 x) = 3- \tan x \\\\\implies 2 + 2 \tan^2 x +\tan x -3 =0\\\\\implies 2 \tan^2 x + \tan x  -1 =0\\\\\implies 2u^2 + u -1 =0~~~ ;[\text{set} \tan x = u]\\\\\implies u = \dfrac{-1\pm \sqrt{1-4\cdot 2 \cdot (-1)}}{2(2)}\\\\\implies u =\dfrac{-1 \pm\sqrt{9}}{4}\\\\\implies u = \dfrac{-1 \pm 3}{4}\\\\\implies u = \dfrac{2}{4}=\dfrac 12~~ \text{or}  ~~u =\dfrac{-4}{4} =-1\\\\

\implies \tan x = \dfrac 12 ~~ \text{or} ~~  \tan x =-1~~~ ;[\text{Substitute back u =tan x}]\\\\\text{Now,}~ \\\\\tan x = -1,\\\\\implies x = n\pi - \dfrac{\pi}4\\\\\\\text{For interval,}~ [0,2\pi) \\\\x = \dfrac{3\pi}4, \dfrac{7\pi}4\\\\\text{In degrees,}~ x = 135^{\circ}, x =315^{\circ}\\\\\tan x = \dfrac 12\\\\\implies x = n\pi + \tan^{-1} \left(\dfrac 12 \right)\\\\\text{For interval} ~[0,2\pi),\\\\

x=\tan^{-1} \left(\dfrac 12 \right),  \left[\pi +\tan^{-1} \left( \dfrac 12 \right)\right]\\\\\text{in degrees,}   ~~x=\tan^{-1} \left(\dfrac 12 \right),  \left[180^{\circ} +\tan^{-1} \left( \dfrac 12 \right)\right]\\\\\\\\\text{Combine all solutions:}\\\\x=\dfrac{3\pi}4, \dfrac{7\pi}4, \tan^{-1} \left(\dfrac 12 \right),  \left[\pi +\tan^{-1} \left( \dfrac 12 \right)\right]\\\\\\

\text{In degrees,}~ x = 135^{\circ},~315^{\circ},~\tan^{-1} \left(\dfrac 12 \right),  \left[180^{\circ} +\tan^{-1} \left( \dfrac 12 \right)\right]

4 0
2 years ago
Pls help fast pls pls pls pls pls
krok68 [10]

Answer:

{3a}^{2} -  {7b}^{2}  +  {2a}^{2}  +  {b}^{2}

Step-by-step explanation:

  1. Since 2 opposite add up to 0,remove them from the expression (+4ab, - 4ab)

2. Calculate the product

3 0
3 years ago
Helppppppppppppppppppppp
FinnZ [79.3K]

Answer:

9^20

Step-by-step explanation:

When the exponents are multiply by an exponent, you multiply the exponent in this case the exponents are 4 and 5 so 4(5)=20.

7 0
3 years ago
Web developers use the hex color code system. The format is a # followed by 6 numbers or letters. The numbers can be anything fr
Norma-Jean [14]

Answer:

16,777,216

Step-by-step explanation:

5 0
3 years ago
You invest $1800 in an account at 2% per year simple interest. The equation
anastassius [24]

the answer is in the picture

8 0
3 years ago
Other questions:
  • 1. Find the slope of a line that passes through the two points (-2,-2) and (-1,7).
    15·1 answer
  • List all common multiples of 5 and 9
    10·1 answer
  • Help me (geometry) !!!
    14·1 answer
  • Solve by substitution<br> x = y - 3<br> 2x + y = 12<br><br> Help!!
    12·2 answers
  • What is the slope of (0,4) and (-4,-3)
    5·2 answers
  • John has finished compiling a list of the various members of the joint application development (JAD) group and the list is as fo
    13·1 answer
  • Helpppppppppppppp ASAP
    8·1 answer
  • Help please ill mark brainliest
    15·1 answer
  • Juan is 5 and his mom is 35. In how many years will Juan's mom be 3 times Juan's age?
    8·2 answers
  • SOLVE THE SIMULATENOUS EQUATIONS Y=X-2 AND Y= 3X+5
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!