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ss7ja [257]
4 years ago
14

ΔABC is right-angled at A and |AB|=2|AC|. Prove that |BC|^2=5|AC|^2

Mathematics
1 answer:
allsm [11]4 years ago
6 0
|AB|^2+|AC|^2=|BC|^2\\\\
(2|AC|)^2+|AC|^2=5|AC|^2\\
4|AC|^2+|AC|^2=5|AC|^2\\
5|AC|^2=5|AC|^2

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What are 10 different words for addition , subtraction, Divison
Elenna [48]
Addition : sum, plus, together, added to, total of, combined, both  

Subtraction: difference, minus, take away, fewer than, less than, decreased by are not, change  

Multiplication: product of, multiplied by, times, of, double, triple 

Division: quotient of, divided by, per, into, out of ratio, of unit price, cut up, separated, share equally, split,  half,  parts
4 0
3 years ago
Which equation represents the line that passes through (0,8)and(2,0)
Lelu [443]
The answer is C.

y= -4x + 8
You can plug in your coordinates.


For (0,8), plug in the x and y values.
8 = -4(0) +8
8 = 0+8
8=8 so, this works

For (2,0) plug in your coordinates.
y = -4x + 8
0 = -4(2) + 8
0 = -8 + 8
0=0

If both coordinates work for the equation, then they pass through that line.
6 0
4 years ago
The product of 7/8 × 1 3/4
andreev551 [17]
It is 91/32 or 2 27/32 or 2.84375
4 0
4 years ago
Read 2 more answers
1. 3(6a); for a=3<br>2. 5d(4); for d=-2​
Firdavs [7]

Answer:

Step-by-step explanation:

1. Solution for 3(6a)a=3 equation:

Simplifying

3(6a) * a = 3

Remove parenthesis around (6a)

3 * 6a * a = 3

Multiply 3 * 6

18a * a = 3

Multiply a * a

18a2 = 3

Solving

18a2 = 3

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Divide each side by '18'.

a2 = 0.1666666667

Simplifying

a2 = 0.1666666667

Take the square root of each side:

a = {-0.408248291, 0.408248291}

2.Solution for 5d(4)d=-2 equation:

Simplifying

5d(4) * d = -2

Reorder the terms for easier multiplication:

5 * 4d * d = -2

Multiply 5 * 4

20d * d = -2

Multiply d * d

20d2 = -2

Solving

20d2 = -2

Solving for variable 'd'.

Move all terms containing d to the left, all other terms to the right.

Divide each side by '20'.

d2 = -0.1

Simplifying

d2 = -0.1

Reorder the terms:

0.1 + d2 = -0.1 + 0.1

Combine like terms: -0.1 + 0.1 = 0.0

0.1 + d2 = 0.0

5 0
3 years ago
Fill in the table using this function rule.<br> y=29-4x
NeTakaya

Answer:

25, 21, 13, 9

Step-by-step explanation:

All you do here is plug in the X from the table to the X in the equation so,

y=29 - 4 x 1 = 25

y=29 - 4 x 2 = 21

y=29 - 4 x 4 = 13

y=29 - 4 x 5 = 9

7 0
3 years ago
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