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Ray Of Light [21]

3 years ago

6

How do you know that substitution gives the answer to a system of equations?

1 answer:

Cerrena [4.2K]3 years ago

3 0

It gives the answer to a system of equations because it explains it

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Ruben bought 6 comic books for $21dollar , 21. Each comic book was the same price.

musickatia [10]

Answer:

3.5 dollars

Step-by-step explanation:

The price of one comic book is 3.5.

I got this by dividing 21 and 6

6 0

3 years ago

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A) Simplify the expression and explain each step

Arte-miy333 [17]

4x3x = 12x
4x2 = 8
So 12x+8-2

3 0

3 years ago

What is the answer to the question?

Naily [24]

It is 1/3, add up the total number of kids, which is 30, the number of kids 6-8 is 10. 10/30 is equivalent to 1/3

5 0

3 years ago

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= 2. Given the quadratic equation 3x2 – 8x + k = 0 has no real roots. Find the range of values of k.

VashaNatasha [74]

$\text{If there are no real roots, then}\\\\~~~~~\text{Discriminant} < 0\\\\\implies b^2 -4ac < 0\\\\\implies (-8)^2 -4 \cdot 3 k < 0\\\\\implies 64-12k < 0\\\\\ \implies 12k > 64\\\\\implies k > \dfrac{64}{12}\\\\\implies k > \dfrac{16}3\\\\\text{Interval,}~ \left( \dfrac{16}3, ~\infty\right)$

6 0

2 years ago

Prove that the shape below is a rectangle.

Ulleksa [173]

Answer:

HG = EF

GF = HE

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers