09/23/21

solve the system of equations with three variables

7x + y + 5z = 274x + 3y + 5z = 216x + y + 2z =9
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09/23/21

Any number that can be expressed as the ratio of two integers, a/b, where b ≠ 0, is a rational number.
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09/22/21

which element is heavier strontium or zirconium
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09/22/21

Physics Question - Finding T (Period)
Starting from rest (stationary) a train accelerates at 2 meters per second squared and travels 100 meters. How long does this take?
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09/22/21

Adding vectors - finding vector B with resultant and vector A
Hello,I've been trying to figure out the following question for some time : the resultant of two vectors, A and B, is a vector of 40 meters towards the north. If the magnitude of A is 30 m and it... more
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09/22/21

R and S are complementary angles. if R=12x-3 and S=7x-2, find R

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09/22/21

Solve the system by inverting the coefficient matrix and using the following theorem:

If A is an invertible n x n matrix, then for each n x 1 matrix b, the system of equations A x = b has exactly one solution, namely, x = a^-1b. x + y + z = 3x + y - 2z = 6-2x + y + z = 0
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09/22/21

Polynomials Inequalities Practice
Show number line test and state answer in interval notation 10) 6 + 5x - 6x2> 0
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09/21/21

functions word problem
A square with side length  𝑎 is inscribed inside a circle. Denote by  𝑆  the area of the region inside the circle, and outside the square (the shaded region in the diagram).  How would you... more
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09/21/21

Silver melts at 960.8°C. At what Fahrenheit temperature does silver melt?
Please show work! (Chemistry question)
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09/21/21

Solve for V (Question)
PV = nRT Solve for V. ( no number, just rearrange the equation)
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09/21/21

If WX=14 and W lies at -9 where could X be located

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09/20/21

Use the following diagram for questions 1-2.
Use the Vertical Angles Theorem to prove the following: Given: ∠1 ≅ ∠2 Prove: ∠1 ≅ ∠2 ≅ ∠3 ≅ ∠4 2. How can you prove ∠1 ≅ ∠2 ≅ ∠3 ≅ ∠4 without using the vertical angles theorem? Explain.
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09/20/21

How would I rewrite and solve the equation P=2l+2w for w?
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09/20/21

Solve the equation. 2/3h−1/3h+11=8
what is "y" solve the equation
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09/20/21

If the two spinners shown are each spun once, what is the probability that the sum of the two numbers is either even or a multiple of 3?
Spinner 1 has: (1, 2, 3, 4, 5, 6)Next spinner has: (1, 2, 3, 4, 5, 6, 7, 8)Been stuck on this problem for a long time. I know the answer but I have no idea how the textbook got there.
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09/20/21

If the Transco Tower were actually 3,000. meters tall, how long in seconds would an object take to free-fall off of the top of the building? (ignoring air resistance).
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09/20/21

Suppose a piece of glass dropped near the top of the hotel falling 215 meters. Ignoring air resistance, what will the velocity in m/s of the piece of glass be when it strikes the ground?

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09/20/21

using the definition of the slope of a tangent line, and find the slope of each function at x=c
f(x)=3-7x at x=-4g(x)=2x^2+x. at x=0h(x)= 1/3x. at x=6
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09/19/21

Can you show the workings for the last part (that you explained saying you just use the distance formula and then you have your answer which is 389.82)?
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09/19/21

If f(x) is an odd function, which of the following must be even?
A. -f(x)B. f(|x-1|)C. none of these.D. | f(x) | E. f(x+1)
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09/19/21

If f(x) is an odd function, which of the following must be even?
A. -f(x)B. f(|x-1|)C. none of these.D. | f(x) | E. f(x+1)
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09/17/21

motorcycle jump

 In an action movie, the heroine is supposed to jump with a motorcycle from the roof of one skyscraper to another one. The roof of the second skyscraper is h=8 meters lower, and the gap between the... more
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09/17/21

The temperature of a gas is increased from 125⁰C to 182⁰C inside of a rigid container. The original pressure of the gas was 1.22atm, what will the pressure of the gas be after the temperature change?
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09/17/21

Water heater math problem

 A solar water heater costs about $6240 to install (after rebates). A traditional gas water heater costs about $850, and costs about $320 per year to run. The average annual cost to run the solar... more
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