All categories

3 years ago

Still have to times it by 20%

Mathematics

2 answers:

Len [333]3 years ago

7 0

If you have to multiply something by 20%, and percent means per one-hundred, it means:

x(20/100)

or

x(0.2)

Brut [27]3 years ago

6 0

Times what by 20% ? If you can ask me the full question i would love to help!

You might be interested in

Find the value of n, correct to 4 significant figures.

Law Incorporation [45]

Answer:

6.708

Step-by-step explanation:

Y varies directly as the square of x (Given)

$\implies y\:\alpha \:x^2$ ......(1)

Y varies inversely as the square root of z (Given)
$\implies y\:\alpha\: \frac{1}{\sqrt z}$ ......(2)

Combining (1) & (2), we find:

$y\:\alpha \:\frac{x^2}{\sqrt z}$

$\implies y=\frac{kx^2}{\sqrt z}$ (Where k is constant of proportionality).....(3)

Now, when y = 2, x = 3 and z = 4, we find the value of k i.e. constant.

$2=\frac{k(3)^2}{\sqrt 4}$

$\implies 2=\frac{k(9)}{2}$

$\implies k =\frac{4}{9}$

Plugging the value of k in (3), we find:

$y=\frac{4x^2}{9\sqrt z}$ ....(4)

Next, in equation (4), plug y = 5, x = n and z = 16 and obtain the value of n by solving it.

$5=\frac{4(n)^2}{9\sqrt {16}}$

$\implies 5=\frac{4(n)^2}{9(4)}$

$\implies 5=\frac{(n)^2}{9}$

$\implies 5(9)=(n)^2$

$\implies 45=(n)^2$

$\implies n=\sqrt{45}$

$\implies n=6.70820393$

$\implies n\approx 6.708$

7 0

2 years ago

Pls help in this maths problem

tester [92]

Answer:

SORRY I don't know second number . I did only first .

5 0

3 years ago

Help please !!!!!!!!!!!

morpeh [17]

Answer:

The third one is the answer

Step-by-step explanation:

the first number shows the distance along, and the second number shows the distance up or down. Begin at the point and follow a vertical line either up or down to the x-axis. There is your x-coordinate

8 0

3 years ago

the store sells glittery string at $.95 per inch and plastic covering for $.60 per square inch. Luckily, the store charges no ta

11111nata11111 [884]

Answer:

Step-by-step explanation:

Multiply 0.60 with 43

Multiply 0.95 with 25

You will get $49.55 which is below $50

5 0

3 years ago

So here is a theoretical question. Let L1 and L2 be linear transformation from a vector space V into Vector space W. Let {v1,v2,

noname [10]

<span>if v belongs to V, then we can find scalars a1,a2,...,an, such that v=a1*v1+a2*v2+...+an*vn, L1(v)=L1(a1*v1+a2*v2+...+an*vn) =a1*L1(v1)+a2*L1(v2)+...+an*L1(vn) =a1*L2(v1)+a2*L2(v2)+...+an*L2(vn) =L2(a1*v1+a2*v2+...+an*vn) =L2(v)</span>

6 0

3 years ago