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1 year ago

Using the rule y = 4x , find thr value of y when x is 5

Mathematics

1 answer:

Sidana [21]1 year ago

6 0

Answer:

y=4(5) =20

Step-by-step explanation:

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What is the answer for x

uranmaximum [27]

Answer:

x=20

Step-by-step explanation:

This is a right triangle, so we can use the pythagorean theorem to help us find x.

The the theorem states that the sum of the legs squared is equal to the length of the hypotenuse squared.

Thus, our equation is:

x^2+48^2=52^2

Simplify.

x^2+2304=2704

Subtract 2304 from both sides.

x^2=400

Find the square root of both sides.

x=20

8 0

2 years ago

Read 2 more answers

WILL MARK BRAINLIEST IF CORRECT!!!

natta225 [31]

Answer:

false

Step-by-step explanation:

(8/4)/2 = 1

8/(4/2) = 4

6 0

2 years ago

Read 2 more answers

if the result, when solving a system by either elimination or substitution, is -5 = -5, the solution is:

Bond [772]

Answer:

Infinitely many solutions

Step-by-step explanation:

When the solved system has the same number on each side, the system has infinite solutions.

3 0

2 years ago

Find the estimates of x^2-x-2=3

Julli [10]

Answer:

$x=\frac{1+\sqrt{21}}{2}\approx 2.79\\or\ x=\frac{1-\sqrt{21}}{2}\approx -1.79$

Step-by-step explanation:

Given

Quadratic equation is

$x^2-x-2=3\\x^2-x-5=0$

Roots of the quadratic equation $ax^2+bx+c=0$ are

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\$

So, for the given equation roots are

$x=\frac{1\pm\sqrt{(-1)^2-4(1)(-5)}}{2\cdot 1}\\x=\frac{1\pm\sqrt{21}}{2}\\so, x=\frac{1+\sqrt{21}}{2}\approx 2.79\\or\ x=\frac{1-\sqrt{21}}{2}\approx -1.79$

5 0

2 years ago

F(x) = -7x - 1<br> f() = -8

xxMikexx [17]

Answer:

f(1) = -8

Step-by-step explanation:

Apparently, you want the argument of the function such that the function value is -8. Fill in the given information and solve for x:

-8 = -7x -1

-7 = -7x . . . . add 1

1 = x . . . . . . . divide by -7

Now, you know that ...

f(1) = -8

3 0

2 years ago