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Harrizon [31]
3 years ago
11

In the formula l2 = h2 +r2, l=25 and r=7, then the value of h is​

Mathematics
1 answer:
Genrish500 [490]3 years ago
8 0

Answer:

18

Step-by-step explanation:

I2=h2+r2

25(2)=h2+7(2)

50=h2+14

-14 -14

36=h2

÷2 ÷2

18=h

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A Number plus it’s half is 21<br> How to write an equation?
nirvana33 [79]
The number is 14. You can put it in an equation by writing 14 + (14 ÷ 2) = 21
6 0
3 years ago
For an oblique rectangular prism, find the volume if the height is divided up into 30 sections, with a total height of h = 60cm,
ladessa [460]

Answer:

Volume of a prism =BH

(length ×width)×height  

(10×20)×60

=12000cm3

Step-by-step explanation:

7 0
3 years ago
Explain reasoning!
vova2212 [387]

Answer:

1.) Incorrect,

2.) Correct

Step-by-step explanation:

1.) Let x be the amount of money,

After increasing x by 20%,

New amount of money ( say y )= (100+20)% of x ( i.e. y is 20% more than x )

= 120 % of x

=\frac{120x}{100}

⇒ y = 1.20x

\because \frac{y-x}{y}\times 100=\frac{ 1.20x-x}{1.20x}\times 100

=\frac{0.2x}{1.2x}\times 100

=\frac{20}{1.2}

≈ 16.67%

Thus, x is approximately 16.67% less than y.

2.) First score = 60%,

Second score = x% ( let )

So, Average percentage score = \frac{60+x}{2}

If \frac{60+x}{2}=70

60+x=140\implies x = 80

4 0
4 years ago
A store pays $46 for a portable GPSnavigation system. The markup is 105%. Find the selling price.
Helga [31]
The markup is the amount added to the price, to make up for other costs, like storage, store expenses and personnel and such.

so, if we take 46 to be the 100%, and then we slap on top of that 105% more, so the selling price is then 100% + 105% = 205%.

if 46 is 100%, what is the 205%?

\bf \begin{array}{ccll}&#10;amount&\%\\&#10;\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\&#10;46&100\\&#10;x&205&#10;\end{array}\implies \cfrac{46}{x}=\cfrac{100}{205}\implies \cfrac{46\cdot 205}{100}=x
7 0
4 years ago
Read 2 more answers
What are the amplitude, period, and phase shift of the given function? f(t)=-1/2sin(3t-2pi)
Romashka [77]

Answer:

The amplitude=|A|=\frac{1}{2}, period=3 and \text{phase shift}=\frac{2\pi}{3}.

Step-by-step explanation:

The given function is

f(t)=-\frac{1}{2}\sin (3t-2\pi)      .... (1)

The general form of sine function is

F(t)=A\sin (Bt-C)+D                 ....(2)

where, |A| is the amplitude, B is period, D is the vertical shift (up or down), and C/B is used to find the phase shift.

On comparing (1) and (2), we get

A=-\frac{1}{2}

B=3

C=2\pi

D=0

So,

amplitude=|A|=\frac{1}{2}

period=3

\text{phase shift}=\frac{2\pi}{3}

Therefore amplitude=|A|=\frac{1}{2}, period=3 and \text{phase shift}=\frac{2\pi}{3}.

8 0
4 years ago
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