1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mashutka [201]
4 years ago
11

What are the steps to solving 7=r^1/2??

Mathematics
2 answers:
Rudik [331]4 years ago
8 0

Answer:

Take the square of each side to get r=49

Step-by-step explanation:

7=r^1/2

^ 1/2  means the square root

The inverse is squaring

So we take the square  of each side

7^2=r^1/2^2

7^2 = r

49 =r

Ivenika [448]4 years ago
5 0

Answer:

<h2>r = 49</h2>

Step-by-step explanation:

Domain:\ r\geq0\\\\a^{\frac{1}{n}}=\sqrt[n]{a}\\\\\text{Therefore}\ r^{\frac{1}{2}}=\sqrt[2]{r}=\sqrt{r}.\\\\r^{\frac{1}{2}}=7\\\\\sqrt{r}=7\qquad\text{square both sides}\\\\\left(\sqrt{r}\right)^2=7^2\qquad\text{use}\ (\sqrt{a})^2=a\\\\\boxed{r=49}

You might be interested in
the length of the longer leg of a right triangle is 3 ft more than three times the length of the shorter leg. the length of the
Ulleksa [173]

with the pythagorean theorem

\begin{gathered} (4+3x)^2=x^2+(3+3x)^2 \\ 16+24x+9x^2=x^2+9+18x+9x^2 \\ 16+24x+9x^2=10x^2+18x+9 \\ 16+24x+9x^2-9=10x^2+18x+9-9 \\ 9x^2+24x+7=10x^2+18x \\ 9x^2+24x+7-18x=10x^2+18x-18x \\ 9x^2+6x+7=10x^2 \\ 9x^2+6x+7-10x^2=10x^2-10x^2 \\ -x^2+6x+7=0 \end{gathered}

using the formula of the quadratic equation

\begin{gathered} x_{1,\: 2}=\frac{-b\pm\sqrt{b^2-4ac}}{2a} \\ x1=\frac{-6+\sqrt{6^2-4\left(-1\right)\cdot\:7}}{2\left(-1\right)}=-1 \\ x2=\frac{-6-\sqrt{6^2-4\left(-1\right)\cdot\:7}}{2\left(-1\right)}=7 \end{gathered}

the length cannot be negative, therefore x=7

length of the shorter leg is: 7ft

length of the longer leg is: 3+3(7)= 24ft

length of the hypotenuse is: 4+3(7)= 25ft

5 0
1 year ago
⎧
MrRissso [65]

Answer:

f(n)=-5-3n

Step-by-step explanation:

Given the recursive formula of a sequence

f(1)=−8

f(n)=f(n−1)−3

We are to determine an explicit formula for the sequence.

f(2)=f(2-1)-3

=f(1)-3

=-8-3

f(2)=-11

f(3)=f(3-1)-3

=f(2)-3

=-11-3

f(3)=-14

We write the first few terms of the sequence.

-8, -11, -14, ...

This is an arithmetic sequence where the:

First term, a= -8

Common difference, d=-11-(-8)=-11+8

d=-3

The nth term of an arithmetic sequence is determined using the formula:

T(n)=a+(n-1)d

Substituting the derived values, we have:

T(n)=-8-3(n-1)

=-8-3n+3

T(n)=-5-3n

Therefore, the explicit formula for f(n) can be written as:

f(n)=-5-3n

7 0
3 years ago
What is the value of 3.2n when n=5
Lady bird [3.3K]
3.2n=3.2*5

3.2*5=16 the answer is 16

Hope this helps, have a great day!! 

:)
7 0
3 years ago
Which of these expressions can be used to calculate the monthly payment for
skad [1K]

Answer:

m=(r/n)+0.114r

Step-by-step explanation:

m=monthly payment

r=remaining amount

n=# of months remaining

3 0
4 years ago
The answer is p = -2/3 and q= -2
igomit [66]

y=\dfrac{p}{q+x}\\\\\dfrac{1}{y}=\dfrac{1}{\frac{p}{q+x}}=\dfrac{q+x}{p}

We have x and y intercept:

(2, 0) and (0, 3).

Substitute the coordinates of points to the equation:

(2,\ 0)\\\\0=\dfrac{q+2}{p}\to q+2=0\to q=-2\\\\(0,\ 3)\\3=\dfrac{q+0}{p}\to3p=q\to3p=-2\to p=-\dfrac{2}{3}

6 0
3 years ago
Other questions:
  • An investment is currently worth 2.125×104 dollars . Ten years ago, the investment was worth ​ 1.25×103 ​ dollars. How many time
    12·2 answers
  • The length of a rectangle is (x+22. The width of the rectangle is (x^2+1). Which expression represents the perimeter of the rect
    8·2 answers
  • Pedro gets 8 hours of sleep each night. How many hours does Pedro sleep in a year with 365 days
    6·1 answer
  • 8 and 21 over 40 in decimal and by step plzzzzzz thank u ill rate it
    5·1 answer
  • What is x 35x+10=190
    7·2 answers
  • What is the surface area of the rectangular pyramid below
    13·2 answers
  • Write the fraction 9/54 in simplest form.​
    10·2 answers
  • Which equation shows the point slope form of the line that passes through (5,1) and has a slope of 1/2
    14·1 answer
  • Algebra 1 unit 6- need help asap please show work. Answers that are not applicable will be reported. thanks to whoever helps!
    8·1 answer
  • Two segments are ___?__if they have the same measure
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!