MATHEMATICS HIGH SCHOOL

Very simple challenge hard question

Answers

Answer 1

Answer:

Answer:

-58.41509433

Step-by-step explanation:

0.4+8(5-0.8*5/8)-5/(2.5)=34.4

[0.4+8(5-4/8)-(2)]=

[0.4+8(40-4)/8)-2=34.4 ( nominator)

15-(8.9-2.6/(2/3))*34*2/5 =-53

15-(8.9-3.9)*68/5

15-5*68/5=

15-68=-53 ( denominator)

(34.4/-53) *90

-58.41509433

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The ticket price for the ice hockey match was £14.50. The price has increased by 7%. How much is a ticket after the increase?

Answers

7%= $\frac {7}{100}$ = 0.07
14.5 × 0.07 = 1.015
Add this number to the original:
14.5+1.015 = £15.515

There is another way, whenever they give us an increased Percentage, they provide us with a hint!
we add that increased percent to 100
100+7=107%
107%= $(107)/(100)$ = 1.07
14.5×1.07= £15.515, it can also be rounded to 15.52
£15.515≈£15.52

20 is 12.5$ of what number?

Answers

Asumming you mean "20 is 12.5% of what number?", the answer is 160.

The time, in seconds, that it takes a pendulum to swing back and forth is modeled by the equation below. f (l) = 2 pi StartRoot StartFraction l Over 32 EndFraction EndRoot, where l is the length of the pendulum in feet What is the approximate length of a pendulum that takes 2.4 pi seconds to swing back and forth?

Answers

Answer:

46.08 feet.

Step-by-step explanation:

Given that, for length, $l$ feet, the time period, $f(l)$ , of the pendulum is

$f(l)=2\pi\sqrt{(l)/(32)}$ .

As the time period equals the time taken by the pendulum in one back and forth motion, so, actually, the given $2.4\pi$ seconds to swing back and forth is the time period.

Let $l_0$ feet be the length of the pendulum for the time period $2.4\pi$ seconds, so

$f(l_0)=2.4\pi$

$\Rightarrow 2\pi\sqrt{(l_0)/(32)}=2.4\pi$

$\Rightarrow \sqrt{(l_))/(32)}=1.2$

$\Rightarrow (l_0)/(32)=(1.2)^2$ [squaring on both the sides]

$\Rightarrow l_0=1.44*32$

$\Rightarrow l_0=46.08$

Hence, the approximate length of a pendulum that takes $2.4 \pi$ seconds to swing back and forth is 46.08 feet.

Answer:

the answer is d on edge 2020

Step-by-step explanation:

Write the equation of the line that passes through the points (3,1) and (-2,6)

Answers

$slope = y2 - y1 / x2 - x1$

$6 - 1 / - 2 - 3$

$5 / - 5$

$- 1$

$y = mx + c$

$1 = - 1 * 3 + c$

$1 = - 3 + c$

$1 + 3 = c$

$c = 4$

$y = - 1x + 4$

$y = - x + 4$

Erika has three pieces of ribbon each peace is 25 yards long she needs to cut pieces that are 22 inches long what is the greatest number of 22 inch pizza is that she can cut from the three pieces of ribbon

Answers

Answer:

120 pieces with a bit left over

Step-by-step explanation:

Recall that 1 yard = 36 inches. Thus, a 22-inch piece of ribbon has length

L = (22 inches) / (36 inches / yd) = 11/18 yd.

We must now find out how many 22-inch, or 11/18-yard, pieces can be cut from each 25-yd piece. Divide 25 yd by (11/18 yd/piece), obtaining:

25 yd 18 pieces

--------- * ----------------- = 40.91 pieces.

1 11 yd

Since we're interested in only whole pieces of length 11/18 yd, this produces 40 pieces with 0.91 piece left over.

Cutting up the three 25-yd pieces will then result in 3(40 pieces), or 120, pieces of length 11/18 yd.

Round to the nearest hundredth 5.6192

Answers

That is to take the number rounded to the nearest value to two numbers to the right of the decimal:

5.62