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2 years ago

7. Which expression is the exponential form of 3√m

Mathematics

2 answers:

borishaifa [10]2 years ago

7 0

Rewrite the rational (fraction) exponents using the formula ^n√a^x= a x/n

3m 1/2

coldgirl [10]2 years ago

5 0

Reemmber
$\sqrt[n]{x^c}= x^\frac{c}{n}$

if you meant $\sqrt[3]{m}$ , then the answer would be $m^\frac{1}{3}$

if you meant 3√3, then that is $3\sqrt[2]{m^1}= 3m^\frac{1}{3}$

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The difference of two numbers is 15. Five times the smaller is the same as 9 less than twice the larger. Find the numbers

Usimov [2.4K]

Answer:

x= -13

y= -28

Step-by-step explanation:

To find the two numbers, write a system of equations with x as one number and y as another:

x-y=15

5x=2y-9

Use substitution to substitute one equation into another. Then solve for the variable.

x=15+y into 5x=2y-9

becomes

5(15+y) = 2y-9

75+5y = 2y- 9

75+3y= -9

3y = -84

y= -28

To find x, substitute y= -28 into one equation.

x - (-28) = 15

x+28 =15

x = 15-28

x=-13

6 0

2 years ago

PLEASE HELP DUE TOMORROW

kow [346]

190-15=x
I believe?
I THINK THIS IS THE ANSWER

3 0

2 years ago

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

1 year ago

У = 2х – 1 у = 3х + 2 Using substitution method

sergij07 [2.7K]

Answer:

x = -3, y = -7

Step-by-step explanation:

Eliminate the equal sides of each equation and combine.

Solve 2x - 1 = 3x + 2 for x.

-x - 1 = 2

-x = 3

x = -3

Evaluate y when x = -3

y = 3 (-3) + 2

y = -7

(-3, -7)

good luck, i hope this helps :)

7 0

2 years ago

Read 2 more answers

{ = {even numbers

Oksi-84 [34.3K]

Step-by-step explanation:

the members of B are 4,8,12

the members of C are 0 2 3

3 0

1 year ago