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3 years ago

What is the percent of decrease on an item that went from $25 to $20?

Mathematics

2 answers:

MAVERICK [17]3 years ago

7 0

The percent of decrease on $25 to $20 is 5 percent.

Andrews [41]3 years ago

4 0

The percent of decrease on an item that went from $25 to $20 is 5 percent.

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Maya thinks there are twice as many players in the league with more than 4 years of experience than there are players with less

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Sorry don’t now the answer to this problem

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3 years ago

forty yards of fabric are used to make 9 school banners. how many yards of fabric does banner use? between what 2 whole numbers

saul85 [17]

Answer:

4 4/9,4 and 5

Step-by-step explanation:

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2 years ago

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What is the height of a cylinder with a volume of 936 times 3.14 cubic inches and a diameter of 24 inches?

S_A_V [24]

H= .6.5

V=πr^2h

h= v/πr^2 = 2940.5/π*12^2 = 6.49993 = 6.5

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3 years ago

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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

Karla has spent $42 on food. She bought milk, cheese, and meat. The milk cost half as much as the cheese and the meat cost four

Alina [70]

M = milk

C= cheese

X=meat

milk = 0.5c

meat = 4c

cheese = 1c

4 +0.5 = 1c = 5.5c

C= 42/5.5 = 7.64

X = 7.64 x 4 = 30.56

M =7.64 * 0.5 = 4.67

30.56 + 3.82 + 7.64 = approximately $42

4 0

3 years ago