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3 years ago

This person did something wrong and I do not know what it is :( Please help this is for points!

Mathematics

1 answer:

Inga [223]3 years ago

7 0

Answer:

It is, indeed, a reduction. But, the scale factor of the dilation should be a fraction instead of a whole number, since the shape has shrunk.

Instead of $\frac{KN}{K'N'}$ , it should be $\frac{K'N'}{KN}$ . That would make it (4 - 2) / (8 - 4) = 2 / 4 = 1/2.

Hope this helps!

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Katrina is building a deck. She cuts 3 lengths of wood from a 72-inch board. The first length is 30 3.4 inches. The second lengt

stich3 [128]

Common denominators!

If you have to add... 3 fractions with 4 as the denominators: 
Then you can combine the numerators: 

a/c+ b/c = (a+b)/c and a/d + b/d + c/d = (a+b+c)/d 

Let's plug in the numbers.

a=3, b=1, c=1, d =4 
3/4 + 1/4 + 1/4 = 5/4 or 1 1/4! 

So the equation for the problem: 

Lt = L1+ L2 + L3 + L4 or 
L4 = Lt - L1 - L2 - L3 Plug in the numbers 

L4 ( remains ) = L total, 72 - L1 ( first cut at 30 3/4 ) - L2 ( second cut 12 1/4 ) - L3 ( 16 1/4 ) 

So 72 - 30 - 12 - 16 - 3/4 - 1/4 - 1/4 =? 
( break this down into simple terms and do it in your head... 

72 - 30 = 42, 42 - 21 = 30, 30 - 16 = 14, 14 - 3/4 = 13 1/4 - 1//4 = 13 - 1/4 = 12 3/4!

8 0

3 years ago

When you form general ideas and rules based on your experience and observation you call that form of reasoning

KiRa [710]

The answer is A. Induction

3 0

3 years ago

A tin has asquare base whose sides measures 32 cm .the vertical sides are 50cm high.cake mixture is poured into the tin and leve

zepelin [54]

Answer:

(a) V = 51200 cubic cm

(b) V' = 38912 cubic cm

Step-by-step explanation:

side of the square base, s = 32 cm

height, h = 50 cm

height of cake mixture, h' = 38 cm

(a) The capacity of the tin is the volume.

Capacity of tin, V = s x s x h = 32 x 32 x 50 = 51200 cubic cm

(b) The volume of the cake mixture is

V' = s x s x h'

V' = 32 x 32 x 38 = 38912 cubic cm

V'' = V - V' = 51200 - 38912 = 12288 cubic cm

6 0

3 years ago

2. A man buys eggs at 55kobo a score . he finds that 10% of the eggs are unsellable but sells the rest at 60kobo a dozen .find i

liubo4ka [24]

Answer:

Percentage Profit is 63.63%

Step-by-step explanation:

The man buys 440 eggs at 55 pence a score

i.e. he buys 20 eggs for 55 pence

He buys 1 egg for 55/20 = 2.75 pence

Therefore, he buys 440 eggs for = 440 × 2.75 = 1210 pence

10% eggs are unsaleable

thus he sold = 440 - 440 × 10/100 = 440 - 44 = 396 eggs

Eggs sold in dozen = 396/12 = 33

He sold 1 dozen for = 60 pence

Thus, he sold 33 dozen for = 33 × 60 = 1980 pence

Profit = 1980 - 1210 = 770 pence

% Profit = (770/1210) × 100 = 63.63%

(hope this helps can i plz have brainlist :D hehe)

3 0

3 years ago

How do you convert the general equation form of a circle to standard form? Answer correctly to get 20 points. Please provide an

ivanzaharov [21]

Answer:

Step-by-step explanation:

The standard form of a circle's equation is (x-h)² + (y-k)² = r² where (h,k) is the center and r is the radius. To convert an equation to standard form, you can always complete the square separately in x and y.

5 0

3 years ago