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3 years ago

What is the x value for 21x+7y=42

Mathematics

2 answers:

xz_007 [3.2K]3 years ago

6 0

Step-by-step explanation: The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable, but we can work out its value if we try!

Andreyy893 years ago

5 0

The value of X is 1.66 repeated ?

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-f(x) = 2x + 6 Find f(-4)

jenyasd209 [6]

The answer is 1 Bcuz u have to first plug in -4 for f then solve the equation by adding like terms and dividing

4 0

3 years ago

PLEASE HELP!! ASAP!!! There’s another part

xeze [42]

Answer:

??????????

Step-by-step explanation:

5 0

2 years ago

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11) Endpoint: (0,4), midpoint (-10, -3) Find the endpoint?

earnstyle [38]

Answer:

(-20,-10)

Step-by-step explanation:

$( - 10 \: \: - 3) = ( \frac{0 + x}{2} \: \: \frac{4 + y}{2} )$

Solve for.x coordinate

$- 10 = \frac{0 + x}{2} \\ - 20 = 0 + x \\ x = - 20$

solve for y coordinate

$- 3 = \frac{4 + y}{2} \\ - 6 = 4 + y \\ - 10 = y$

5 0

3 years ago

Which angles are vertical to DEA? Question is located in the attached file (image)

ValentinkaMS [17]

Answer:

∠CEB

Step-by-step explanation:

The vertical angle is one that is directly opposite to the original angle. In this image of two intersecting lines, it looks like the angle ∠CEB is directly across from our angle ∠DEA. So, the angle ∠CEB is vertical to ∠DEA.

Hopefully that was helpful! :)

3 0

2 years ago

Round 4.93 to 1 decimal place

seropon [69]

4.93
^ This number is less than 5, so we round down to 4.9.

3 0

2 years ago

Read 2 more answers