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2 years ago

Please help! Urgent

Mathematics

1 answer:

mote1985 [20]2 years ago

5 0

Answer:

You Probably took the test and got a good grade!

Step-by-step explanation:

I need help myself so tell me what the answer is lol

Stay Positive!

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-2x + y=5 and -5x + y = -4 cooridbnates of the solution to this system of equation

Viktor [21]

Answer:

(3,11)

Step-by-step explanation:

Turn both equations into linear equations:

y=2x+5

y=5x-4

Then, just graph both equations.

Find the point where the two lines intersect. That point of intersection is the solution. That coordinate is (3,11).

8 0

3 years ago

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. Write and solve an equa

MariettaO [177]

Answer:

Steven is 15 and one half years old now

Step-by-step explanation:

Linear equations

Sometimes we need to know the value of a variable in a given equation and that variable is given as a polynomial of degree 1. Solving for that variable means isolating it and replacing the other known values

Steven was 7 years old eight and one-half years ago. If we call x as the actual age of Steven, his age eight and one-half years ago was

$x-8\frac{1}{2}$

We know he was 7 years old then, so

$x-8\frac{1}{2}=7$

We need to know his actual age, so let's solve for x, adding $8\frac{1}{2}$ to each side of the equation

$x-8\frac{1}{2}+8\frac{1}{2}=7+8\frac{1}{2}$

Simplifying

$x=15\frac{1}{2}$

Steven is 15 and one half years old now

7 0

3 years ago

What is the inverse function f f(x)=radical x +7

Arte-miy333 [17]

Step-by-step explanation:

by switching the places of x and y ans solving for y

4 0

3 years ago

What are the significant digits in 0.00025km?

brilliants [131]

Anything between the decimal and last non-zero digit
so 00025 are significant
the 0 in front is insignificant because it could be
00000.00025

zeroes after the 25 don't matter becasue it could be
0.000250000000 and it wouldn't change

the sig figs are 00025

4 0

3 years ago

Read 2 more answers

A student said thst the distance between (-5,7) and (3,7) is 2 units is the student correct?

Usimov [2.4K]

No.

The distance is |-5 -3| = 8 units. (Y-coordinates are the same, so the distance is measured entirely in the x-direction. Distance is non-negative.)

3 0

3 years ago