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3 years ago

the regular price of a shirt is $40 during a sale a discount of 20% is given calculate the amount a customer pays for d shirt

Mathematics

2 answers:

Norma-Jean [14]3 years ago

3 0

Answer:

$32

Step-by-step explanation:

0.8*40

Verizon [17]3 years ago

3 0

Answer:$32

Step-by-step explanation:

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What is the solution the solution to x/-1 > -6

wlad13 [49]

Answer:

x < 6

Step-by-step explanation:

x/-1 > -6

x < (-6) * (-1)

so, x < 6

5 0

3 years ago

I need help Plot it on the picture please.

Bumek [7]

Answer:

Plot -2 2/3 two dots to the left of -2. Plot 5/6 one dot to the left of 1.

Step-by-step explanation:

3 0

4 years ago

1)a chord of length 18cm midway the radius of a circle. calculate the radius of the circle correct to 1d.p. 2)if two parallel ch

kykrilka [37]

Part 1:

Given that the length of the chord is 18 cm and the chord is midway the radius of the circle.

Thus, half the angle formed by the chord at the centre of the circle is given by:

$\cos\theta=\frac{\left( \frac{1}{2} r\right)}{r}= \frac{1}{2} \\ \\ \Rightarrow\theta=\cos^{-1}\left( \frac{1}{2} \right)=60^o$

Now,

$\sin60^o= \frac{9}{r} \\ \\ \Rightarrow r= \frac{9}{\sin60^o} =10.392$

Therefore, the radius of the circle is 10.4 cm to 1 d.p.

Part 2I:

Given that the radius of the circle is 10 cm and the length of chord AB is 8 cm. Thus, half the length of the chord is 4cm. Let the distance of the mid-point O to /AB/ be x and half the angle formed by the chord at the centre of the circle be θ, then

$\sin\theta= \frac{4}{10} = \frac{2}{5} \\ \\ \theta=\sin^{-1}\left( \frac{2}{5} \right)=23.6^o$

Now,

$\cos23.6^o= \frac{x}{10} \\ \\ \Rightarrow x=10\cos23.6^o=9.165\approx9.2cm$

Part 2II:

Given that the radius of the circle is 10cm and the angle distended is 80 degrees. Let half the length of chord CD be y, then:

$\sin40^o= \frac{y}{10} \\ \\ \\ \Rightarrow y=10\sin40^o=6.428$

Thus, the length of chord CD = 2(6.428) = 12.856 which is approximately 12.9 cm.

3 0

3 years ago

How to solve (-7)+10?

slavikrds [6]

-7 + 10 = 3
=
10 + (-7)
Is the same as
10 - 8
…
Not sure if this was that helpful.. I hope it did.

8 0

3 years ago

Read 2 more answers

Can the sides of a triangle be in the given ratio? 3:4:5

RUDIKE [14]

Answer:

Yes

Step-by-step explanation:

In order to determine if a triple of values will form a triangle, we must apply the Triangle Inequality Theorem, which states that for a triangle with lengths a, b, and c:

a + b > c

a + c > b

b + c > a

Here, let's suppose that since the ratio of the sides is 3 : 4 : 5, then let the actual side lengths be 3x, 4x, and 5x, where x is simply a real value.

With loss of generality, set a = 3x, b = 4x, and c = 5x. Plug these into the Triangle Inequality to check:

a + b > c ⇒ 3x + 4x >? 5x ⇒ 7x > 5x ⇒ This is true

a + c > b ⇒ 3x + 5x >? 4x ⇒ 8x > 4x ⇒ This is also true

b + c > a ⇒ 4x + 5x >? 3x ⇒ 9x > 3x ⇒ This is true

Since all three conditions are satisfied, we know that a true triangle can be formed given that the ratio of their sides is 3 : 4 : 5.

<em>~ an aesthetics lover</em>

5 0

3 years ago

Read 2 more answers

the regular price of a shirt is $40 during a sale a discount of 20% is given calculate the amount a customer pays for d shirt​

the regular price of a shirt is $40 during a sale a discount of 20% is given calculate the amount a customer pays for d shirt