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zaharov [31]
2 years ago
5

I need help with this question​

Mathematics
1 answer:
eimsori [14]2 years ago
4 0

Answer:

No idea for this question

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Please help by solving with method. Thanks ​
Xelga [282]

Answer:

(a) AD=6 cm

(b) 66 cm²

(c) 38 cm

Step-by-step explanation:

(a) To get the length of AD, we can use pythagoras on the triangle part. Let's say the dotted line intersects DC at E. Then since AB and DC are parallel, AD is equal to BE. EC = 8 cm simply by subtracting AB from DC (15-7=8).

Then pythagoras says that 8²+BC²=10². So BC = √(100-64) = 6. And since BC=AD, AD is also 6.

(b) Area of the rectangle DEBA is 7*6 = 42. Area of triangle ECB is base times half height: 8*3 = 24. Sum is 42+24 = 66 cm²

(c) Perimeter is 7+10+15+6 = 38 cm. Add all the side lengths.

3 0
3 years ago
Read 2 more answers
A dice is rolled and a marble is selected at random from a bag with 2 red marbles, 2 green marbles, 2 yellow marbles, 1 purple m
laila [671]
1/3 times 6/8

1/3 times 3/4

So, the answer is 3/12

Simplify: 1/4
4 0
2 years ago
What is the value of x?<br> B<br> (x-4)<br> С<br> 19<br> А A<br> F<br> X
IgorC [24]

Answer:

hello did you already get the answers

3 0
3 years ago
Solve the inequality for y. y + 4x &lt; -3
Olin [163]

Answer:

\huge \boxed{y

Step-by-step explanation:

y + 4x < -3

Subtracting 4x from both sides of the inequality.

y + 4x -4x< -3-4x

Simplifying the inequality.

y

4 0
3 years ago
Your bank offers free access to online banking, but they charge you $.02 for each online e-check you send. They charge you $.10
Artist 52 [7]

Answer: 17.28

Step-by-step explanation:

18*12 =216*.02=4.32

18*12=216*.10=21.6

21.6-4.32=17.28

4 0
2 years ago
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