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KiRa [710]
2 years ago
8

Eighteen is 25% less than what number?

Mathematics
2 answers:
Elenna [48]2 years ago
8 0

Answer:

72

Step-by-step explanation:

multiply 18 by 4,

since 100/4 is 25, and four quarters makes a dollar, multiply it by 4

18(4) = 72

ki77a [65]2 years ago
5 0
The answer is 72. I hope it helps!

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Monique bought a shirt for $22.80 during a 30% off sale. How much dose the shirt cost when it is not on sale
vfiekz [6]

Answer:$29.64

Step-by-step explanation:

$22.80 + 30%= $29.64

3 0
3 years ago
Read 2 more answers
Someone please help me with this question
mrs_skeptik [129]

Answer:

10x

Step-by-step explanation:

By definition

(f\codt g)(x)=f(x)\cdot g(x)

So we just need to multiply the two functions

(f\cdot g)(x)= f(x)\cdot g(x)\\=\sqrt{2x}\cdot \sqrt{50x}\\=\sqrt{(2x)\cdot (50x)}=\sqrt{100x^2}\\=10\sqrt{x^2}\\=10x \text{ since x is non negative}

8 0
2 years ago
Compound interest of $1000 is invested at 10% compounded continuously, the future value s at any time t in years is given by s=1
crimeas [40]

Answer: 6.93 years

Step-by-step explanation:

Given

Rate of interest is r=10\%

Future value is given by s=1000e^{0.1t}

For the investment to double itself, i.e. s=2000

\Rightarrow 2000=1000e^{0.1t}\\\Rightarrow 2=e^{0.1t}\\\\\text{Taking log both sides}\\\\\Rightarrow \ln 2=0.1t\\\\\Rightarrow t=\dfrac{\ln 2}{0.1}\\\\\Rightarrow t=6.93\ \text{years}

It takes around 6.93 years to double the investment.

8 0
3 years ago
Billy buys a fridge.
Alex777 [14]
To answer this item, we let x represent the original price of the object or the fridge before it happened. 

The representation would lead us to conclusion that the total amount to be paid is equal to,

                   1.20x = £480

The value of x from the equation,

                     x = 400

The answer is <span>£</span>400
7 0
3 years ago
H(t)=-16t^{2}+100t+10 find the domain and range. please
RSB [31]

Answer:

Step-by-step explanation:

The graph of this function is that of a parabola that opens down (due to the negative coefficient of t^2).  The axis of symmetry is

        -b          -100

x = --------- = ----------- = 50/16 = 25/8.

        2a        2(-16)

The y value of the vertex is h(25/8) = -16(25/8)^2 + 100(25/8) + 10, or 166/25.

The largest value this function can take on is 166/25.  Thus, the range is

(-infinity, 166/25).

Since the given function is a polynomial, the domain consists of all real numbers.

3 0
3 years ago
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