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
Cloud [144]
3 years ago
11

Im a bit confused with this... any help would be great :(

Mathematics
1 answer:
max2010maxim [7]3 years ago
8 0

Step-by-step explanation

(9).

ΔXYZ ≅ ΔRST

XZ = RS

XZ = 60

RS = 60

(10).

ΔABC ≅ ΔEDC

AC = EC

EC = 56

AC = 56

(11).

ΔJKL ≅ ΔMKN

JL = MN

3x - 2 = x + 1

2x = 3

x = 3/2 ⇒ x = 1.5

(12).

ΔBCD ≅ GEF

BD = GF

BD = 57

(13).

ΔPQR ≅ SQT

PQ = SQ

x + 5 = 8

x = 8 - 5

x = 3

(14).

ΔCDE ≅ GDF

ED = FD

ED = 4

You might be interested in
The vertices of a triangle ABC are A(7, 5), B(4, 2), and C(9, 2). What is measure of angle ABC? 30° 45° 56.31° 78.69°
GenaCL600 [577]

The measure of angle ABC is 45°

<em><u>Explanation</u></em>

Vertices of the triangle are:   A(7, 5), B(4, 2), and C(9, 2)

According to the diagram below....

Length of the side BC (a) =\sqrt{(4-9)^2+(2-2)^2}= \sqrt{25}= 5

Length of the side AC (b) = \sqrt{(7-9)^2 +(5-2)^2}= \sqrt{4+9}=\sqrt{13}

Length of the side AB (c) = \sqrt{(7-4)^2 +(5-2)^2} =\sqrt{9+9}=\sqrt{18}

We need to find ∠ABC or ∠B . So using <u>Cosine rule</u>, we will get...

cosB= \frac{a^2+c^2-b^2}{2ac} \\ \\ cos B= \frac{(5)^2+(\sqrt{18})^2-(\sqrt{13})^2}{2*5*\sqrt{18} }\\ \\ cosB= \frac{25+18-13}{10\sqrt{18}} =\frac{30}{10\sqrt{18}}=\frac{3}{\sqrt{18}}\\ \\ cosB=\frac{3}{3\sqrt{2}} =\frac{1}{\sqrt{2}}\\ \\ B= cos^-^1(\frac{1}{\sqrt{2}})= 45 degree

So, the measure of angle ABC is 45°

7 0
3 years ago
Read 2 more answers
23 girls have a mean height of 153cm
DanielleElmas [232]

Answer:

Mean height of 159

Step-by-step explanation:

Add 153 and 165, then divide by 2 to find the average of 159.

6 0
3 years ago
I can’t get this answer right
statuscvo [17]

Answer:

A

Step-by-step explanation:

I believe this is correct, if not feel free to let me know and I will fix it. I'm sorry in advance if it is incorrect.

8 0
3 years ago
Read 2 more answers
Mike had 280 dollars to spend on 8 books.After buying them he had 16 dollars. How much did each book cost?
adell [148]
Well, you can't really determine the price of 1 book, but you can find out the average cost.

280 - 16 = 8x (x = cost of 1 book)
264 = 8x
264/8 = 8x/8
33 = x

So the average cost of one book is 33$( A little expensive if I do say so myself)
Hope this helped!
6 0
3 years ago
Read 2 more answers
What unit would be best to use for measuring the weight of a stapler?
Alika [10]
<span>The unit that would be best to use for measuring the weight of a stapler are grams. Since a stapler is not too heavy, you don't need a large unit for measurement of weight. Kilograms would be too large, because normally staplers do not weigh a couple of kilograms, but rather a certain number of grams. Hope I helped! :) Cheers!</span>
7 0
3 years ago
Other questions:
  • Allie, Ben, and Cliff plant ceilings in the neighborhood park. Ali plans 40% of the total number of ceiling, then place 45% of t
    12·1 answer
  • The number of people who own smartphone to the number of people who owns a flip phone of 4:3 if 500 more people own a smartphone
    5·1 answer
  • A car with a mass of 1,250 kg travels at 2.24 m/s and bumps into a stopped car with a mass of 1,300 kg. After the collision, the
    12·1 answer
  • What is the equation of the line that contains the points (2,6) and (-2,4)
    9·2 answers
  • What number is the opposite of -3?<br> Explain your reasoning
    10·1 answer
  • 1. Find the surface area of a cylinder with diameter 24 mm and height 16 mm
    7·1 answer
  • 2^7/2^3 basic exponent rules
    8·2 answers
  • Award brainly for random response! Ü
    7·2 answers
  • HELP ASAP! I’m very confused and need help! Thank you!
    15·1 answer
  • Does x - 6 = 2 (4x + 3) have
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!