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ozzi
3 years ago
5

The diagram shows a square ABDE and an equilateral triangle BCD work out the size of angle EBC.​

Mathematics
1 answer:
Phoenix [80]3 years ago
8 0

9514 1404 393

Answer:

  105°

Step-by-step explanation:

∠EBC = ∠EBD + ∠DBC

∠EBC = 45° + 60°

∠EBC = 105°

__

The diagonal of the square bisects the 90° corner angle, so the portion of interest is 90°/2 = 45°.

An equilateral triangle has all three angles the same: 180°/3 = 60°.

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21 x ________ ÷ 3 = 21 *
GrogVix [38]

Answer:

first one: <u>3</u>

second one: <u>b</u>

third one: <u>3.2</u>

Step-by-step explanation:

first one:

21 x ________ ÷ 3 = 21

rewrite equation:

21 ÷ 3 x ___ = 21

7 x ___ = 21

(21 / 7 = 3)

7 x 3 = 21

second one:

b x h ÷ h = ___

B

third one:

876 x 3.2 ÷ ______ = 876

2803.2 ÷ ___ = 876

(2803.2 / 876 = 3.2)

2803.2 x 3.2 = 876

7 0
3 years ago
How do you find the next three terms in the geometric sequence 9, -3, 1, , ... ?
levacccp [35]
Each term is being divided by -3, so the next three terms would be:

-1/3, 1/9, -1/27
7 0
3 years ago
Brainliest + Points!<br><br> Please explain !
Morgarella [4.7K]

Answer:

A) -2/5

Step-by-step explanation:

Note that for a slope, the slope of the line is found by using the equation:

slope = (rise/run).

In this case, find two points. For example, i will use:

(0, 2) & (5, 0). (x = 0, y = 2) ; (x = 5, y = 0)

Note that "rise" = y, and "run" = x. Plug in the corresponding numbers for the corresponding points.

(2 - 0)/(0 - 5) = slope

Simplify

(2)/(-5) = slope

-(2/5) is your answer.

Note that it does not matter where the negative sign is placed.

~

6 0
4 years ago
What is the lcm for 7,14,16
MAXImum [283]

Answer:

112

Step-by-step explanation:

To find the least common multiple, we break the numbers down into prime factors

7 = 7

14 = 7*2

16 = 2*8 = 2*4*2 = 2*2*2*2

Then we take the largest number of times it appears in all the numbers

2 appears 4 times so we take take four 2's

7 appears 1 so we take one 7


LCM = 2*2*2*2*7

LCM = 112

7 0
3 years ago
Yall know the rate of change?
ale4655 [162]

Answer:

M=-3

Step-by-step explanation:

Slope:

y2-y1/x2-x1

-3-3/1+1=6/-2=-3

4 0
3 years ago
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