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taurus [48]
2 years ago
11

Help Plz Will Upvote

Mathematics
2 answers:
kykrilka [37]2 years ago
4 0
Not the best handwriting but I hope it helped!

horsena [70]2 years ago
4 0
The answer to you question is B which is 5.
You might be interested in
ABC and EDC are straight lines. EA is parallel to DB. EC = 8.1 cm. DC = 5.4 cm. DB = 2.6 cm. (a) Work out the length of AE. cm (
harkovskaia [24]

By applying the knowledge of similar triangles, the lengths of AE and AB are:

a. \mathbf{AE = 3.9 $ cm}\\\\

b. \mathbf{AB = 2.05 $ cm} \\\\

<em>See the image in the attachment for the referred diagram.</em>

<em />

  • The two triangles, triangle AEC and triangle BDC are similar triangles.
  • Therefore, the ratio of the corresponding sides of triangles AEC and BDC will be the same.

<em>This implies that</em>:

  • AC/BC = EC/DC = AE/DB

<em><u>Given:</u></em>

EC = 8.1 $ cm\\\\DC = 5.4 $ cm\\\\DB = 2.6 cm\\\\AC = 6.15 $ cm

<u>a. </u><u>Find the length of </u><u>AE</u><u>:</u>

EC/DC = AE/DB

  • Plug in the values

\frac{8.1}{5.4} = \frac{AE}{2.6}

  • Cross multiply

5.4 \times AE = 8.1 \times 2.6\\\\5.4 \times AE = 21.06

  • Divide both sides by 5.4

AE = \frac{21.06}{5.4} = 3.9 $ cm

<u>b. </u><u>Find the length of </u><u>AB:</u>

AB = AC - BC

AC = 6.15 cm

To find BC, use AC/BC = EC/DC.

  • Plug in the values

\frac{6.15}{BC} = \frac{8.1}{5.4}

  • Cross multiply

BC \times 8.1 = 6.15 \times 5.4\\\\BC = \frac{6.15 \times 5.4}{8.1} \\\\BC = 4.1

  • Thus:

AB = AC - BC

  • Substitute

AB = 6.15 - 4.1\\\\AB = 2.05 $ cm

Therefore, by applying the knowledge of similar triangles, the lengths of AE and AB are:

a. \mathbf{AE = 3.9 $ cm}\\\\

b. \mathbf{AB = 2.05 $ cm} \\\\

Learn more here:

brainly.com/question/14327552

3 0
2 years ago
What is the number below that subtracted 7 from four times it multiplied and equals 1?
Dvinal [7]

Answer:

a.4

Step-by-step explanation:

because

4 0
3 years ago
Please help!! I Will give brainliest!! Just the coordinates will be fine!!
Lerok [7]

Answer:

(2, 1) (1, 5) and (4, 3)

Step-by-step explanation:

Basically switch the x and y axes, and depending on the quadrant, switch the negative and positive signs to their appropriate ones.

hope this helps!

please heart and five-star it if u have the chance! :D

6 0
3 years ago
At school, the maximum number of students that can be in a classroom is 21. If there are 16 students signed up for the geometry
nalin [4]

Step-by-step explanation:

Simple

We will subtract

21 - 16 = 5

So 5 more students can join the class

7 0
3 years ago
If the bottom of a ship is 15.8 below the surface of the sea, calculate the pressure at the bottom of the ship. The density of t
Zolol [24]
Given:
Depth, h= 15.8
Density of seawater= 1030kg/m3

We need to find:
Pressure

Answer:
P= ρhg
P=(1030)(15.8)(9.81)= 159647.94 Pa
7 0
3 years ago
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