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
juin [17]
3 years ago
8

If x2 = 30, what is the value of x? A. ±60 B. ±15 C. ±square root of 30 D.±square root of 15

Mathematics
1 answer:
Sedaia [141]3 years ago
3 0

Answer:

sorry i cant tell if that two is an exponent. If it is x squared then the answer is the square root of 30

You might be interested in
The formula for finding the volume of a nose cone of an aircraft is V = (pi * d ^ 2 * h)/6 where d is the diameter of the base o
adell [148]

Answer:

h=\frac{6V}{\pi d^2}

Step-by-step explanation:

we have

V=\frac{\pi d^2h}{6}

Solve for h

That means ----> isolate the variable h

step 1

Multiply by 6 both sides

6V=\pi d^2h

step 2

Divide by \pi d^2 both sides

h=\frac{6V}{\pi d^2}

5 0
4 years ago
A metallurgist has an alloy with 5% titanium and an alloy with 30% titanium. He needs 100 grams of an alloy with 15% titanium. H
andrey2020 [161]
Let us convert the percentages to decimal format first.. so 5% is just 5/100 or 0.05 and 15% is just 15/100 or 0.15

so hmmm, so, let's say it needs "x" amount and "y" amount of each respectively, so, whatever "x" and "y" are, they must add up to 100, and whatever their concentration is, must add up to what the mixture yields

thus

\bf \begin{array}{lccclll}
&amount&concentration&
\begin{array}{llll}
concentrated\\
amount
\end{array}\\
&-----&-------&-------\\
\textit{5\% alloy}&x&0.05&0.05x\\
\textit{30\% alloy}&y&0.30&0.3y\\
-----&-----&-------&-------\\
mixture&100&0.15&15
\end{array}
\\\\\\
\begin{cases}
x+y=100\implies \boxed{y}=100-x\\
0.05x+0.3y=15\\
----------\\
0.5x+0.3\left( \boxed{100-x} \right)=15
\end{cases}

solve for "x"

what's "y"? well, y = 100 - x
4 0
3 years ago
What is the diameter of a cone if the volume is 134 and the height is 8
patriot [66]

Answer:

times it

Step-by-step explanation:

5 0
3 years ago
What is the result when 8x^3+6x^2+15x+7 divides by 2x + 1
sveticcg [70]

Answer:

Step-by-step explanation:

3 0
3 years ago
15 - 5 x = 10 x + 45
Tomtit [17]

Answer:

x=-2

Step-by-step explanation:

add 5x , then subtract 45, then divide by 15

6 0
3 years ago
Read 2 more answers
Other questions:
  • Solve 7/4=3/x to the nearest tenth
    5·2 answers
  • In a bag of marbles ½ are red, ¼ are blue, ⅙ are green, and 1/12 are yellow. You pick a marble without looking The marble is mos
    6·1 answer
  • What is 2.161616 as a fraction?
    9·1 answer
  • Find the range of the relation.
    13·1 answer
  • Find the radius and the circumference if the diameter is 11.5 ft.
    9·1 answer
  • HELP A GORL OUT PLEASE
    14·1 answer
  • The cost of renting a car is $46/week plus $0.25/mile traveled during that week. An equation to represent the cost would be y =
    9·1 answer
  • MAX is equiangular If m
    6·1 answer
  • Could someone help me with math? *spam answers not tolerated* THANKS WILL GIVE BRAINLIEST if you have an explanation! Thanks in
    10·1 answer
  • Part B The mass of an average grain of rock salt is about 40 times the mass of an average grain of table salt. If you multiply t
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!