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Elis [28]
3 years ago
12

In the rectangle shown below, EC =

Mathematics
1 answer:
elixir [45]3 years ago
3 0
Answer is D. 10

First, find the missing horizontal length of the triangle.

8 - 3 = 5

Afterwards, find the area of the triangle.

(lengthxwidth)2/2= triangle area
(5x4)/2 = 10
You might be interested in
Can someone help me please asap
riadik2000 [5.3K]

Answer:

A. 55°

B. 71°

C. 100°

D. 65°

E. 120°

F. 155°

G. 147°

H. 36°

I. 70°

J. 54°

K. 24°

L. 40°

Step-by-step explanation:

A. 180 - (90 + 35) = 55°

B. 180 - (34 + 75) = 71°

C. 180 - (43 + 38) = 100°

D. 180 - 50 = 130 / 2 = 65°

E. 180 - (90 + 30) = 60°

180 - 60 = 120°

F. 180 - (120 + 35) = 25°

180 - 25 = 155°

G. 180 - 145 = 35 + 112 = 148°

H. 180 - (40 + 26) = 144°

180 - 144 = 36°

I. 180 - (60 + 65) = 125°

180 - 125 = 55°

180 - (55 + 50) = 75°

180 - (75 + 35) = 70°

J. 180 - 116 = 64°

180 - (64 + 62) = 54°

K. 180 - (138 +18) = 24°

L. 180 - (80 + 60) = 40°

7 0
3 years ago
A B C or D need asap please
Paladinen [302]

Answer:multiplication property of -1

Step-by-step explanation:

because it is muliplying by negatives

3 0
3 years ago
Read 2 more answers
Chris earns money working at the neighborhood grocery store. The table shows how much money he earned for four weeks.
Vitek1552 [10]
The answer is D because his money depends on how many hours he works.
4 0
4 years ago
Read 2 more answers
Please help! i'm not really good at these, thank u sm if u help!
Archy [21]

Answer:

Correct: a, b, c, d, f, g, h, i, l

Incorrect: e, j, k

Step-by-step explanation:

a. -120=60(-2) {insert x and y into the equation and see if it works} Correct

b. 60 is being multiplied by hours, so it is the mph Correct

c. 60 is always the one being multiplied, so it's the constant Correct

d. 210=60(3.5) {insert 3.5 as x [cause hours] and see if it equals 210 [it does]} Correct

e. y is the dependent variable, and it represent miles driven Incorrect

f. Direct variation equation is y=kx {in the equation, k=60} Correct

g. x is the independent variable, and it represents the hours driven Correct

h. The x and the y are proportional Correct

i. y is the dependent variable, and it represent miles driven Correct

j.  y is the dependent variable, and it represent miles driven Incorrect

k. Rise=y Run=x The first point would be (1,60) {rise=60 run=1} Incorrect

l. (0,0) is a solution, and it is also the y-intercept Correct

(hope this helps :P)

8 0
3 years ago
Using this diagram, find x and y
PilotLPTM [1.2K]

Answer:

x=13

y=11

Step-by-step explanation:

3y+5+52=90

3y=90-57

3y=33

y=33/3=11

4x=52

x=52/4=13

8 0
2 years ago
Read 2 more answers
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