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Firdavs [7]
3 years ago
11

I really need help urgently!!! Geometry!

Mathematics
1 answer:
Naddik [55]3 years ago
3 0
Both triangles are similar because 2 angles are same, only difference is in size.
similarity theorem - 2 angles of one triangle are congruent to 2 angles of another triangle, corresponding sides are in proportional.

24/ 3x+6 = 32/28
24 x 28 = 32 (3x+6)
x = 5

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A supplier sold a scanner machine for Rs 41,400 with 15% VAT after allowing 10% discount on it's marked price and gained 20%. By
victus00 [196]

3%

Answer:

Selling price with VAT {15%} = Rs 41400

S.P +15% of S.P =Rs 41400

S.P(1+15%)=Rs 41400

S.P=Rs 41400/1.15

Selling price without VAT =Rs 36000

Again

Discount = 10%

M.P =S.P+ Discount % of M.P

M.P-Discount% of M.P= S.P

M.P(1-Discount%)=Rs 36000

M.P(1-10%)=Rs 36000

M.P=Rs 36000/0.9

Marked Price = Rs 40,000

again

Discount =Discount % of M.P

=10% of 40000

=Rs 4,000

Again

Profit=20%

For 20% profit

Cost price = (S.P*100)/(100+profit%)

=(36000*100)/(100+20)

= Rs 30000

For 24% profit

selling price = (100+profit%)*C.P/100

=(100+24)*30000/100

=Rs 37200

Again

Discount = 40000–37200 = Rs2800

Discount % = discount/M.P*100%

=2,800/40,000* 100 = 7%

Finally

Discount percent to be reduced =10%–7%= 3%

3 0
2 years ago
Factor 3y^2 - 4y. plzzzzzz
Lisa [10]

Answer:

y(3y - 4)

Step-by-step explanation:

3y^{2} -4y

Both have y.

Factor y out of 3y^{2} -4y

y(3y-4)

7 0
4 years ago
Gavin, Colin and Dan share some sweets in the ratio 4:5:3. Gavin gets 20 sweets. How many sweets are there altogether?
Aliun [14]

9514 1404 393

Answer:

  60

Step-by-step explanation:

Gavin has 20/4 = 5 times as many sweets as his corresponding number of ratio units. The total number of ratio units is 4+5+3 = 12, so the total number of sweets is 5×12 = 60.

There are 60 sweets altogether.

_____

They are divided as ...

  • Gavin: 20
  • Colin: 25
  • Dan: 15
8 0
3 years ago
ILL GIVE BRAINLIEST!! Find y. Give your answer in<br> the simplest form.<br> 45°<br> y = [?]
ehidna [41]

Answer:

y = 2

Step-by-step explanation:

Using the sine ratio and the exact value

sin45° = \frac{1}{\sqrt{2} } , then

sin45° = \frac{opposite}{hypotenuse} = \frac{\sqrt{2} }{y} = \frac{1}{\sqrt{2} } ( cross- multiply )

y = (\sqrt{2} )² = 2

8 0
3 years ago
Given f(x)=-1/7√16-x^2 find f^-1(x)
Vera_Pavlovna [14]

Answer:

f^{-1}(x)=\pm \sqrt{49x^2-16}

Not a function.

Step-by-step explanation:

The given function is;

f(x)=-\frac{1}{7}\sqrt{16-x^2}

Let y=-\frac{1}{7}\sqrt{16-x^2}

Interchange x and y;

x=-\frac{1}{7}\sqrt{16-y^2}

Solve for y;

-7x=\sqrt{16-y^2}

Square both sides

(-7x)^2=(\sqrt{16-y^2})^2

49x^2^2=16-y^2

49x^2^2-16=y^2

y=\pm \sqrt{49x^2-16}

The inverse is

f^{-1}(x)=\pm \sqrt{49x^2-16}

f^{-1}(x)=\pm \sqrt{49x^2-16} is not a function because one x-value maps onto to different y-values.

6 0
4 years ago
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