An inequality: a number sentence with ≤, ≥, <, >, = or ≠
≤ means: "less than or equal to"
≥ means: "greater than or equal to"
< means: "less than"
> means: "greater than"
≠ means: "not equal to"
= means: "equals"

8 0

3 years ago

Calculate the value of 4x2 + xy when x = 3 and y=-2.

Alchen [17]

Answer:

Step-by-step explanation:

4x squared + xy

4x(4x) + xy

12(12) + 3 x 2

144 + 6

= 150

4 0

3 years ago

Hamdan says that when you add fractions with the same denominator, you can add the numerators and keep the same denominator. Is

Elina [12.6K]

Answer:

Yes, Hamdan is correct.

Step-by-step explanation:

Let the two fractions are q/r and s/r.

Here, the denominator is same for both the fractions.

So, as we add them, add the numerators and the denominators remains same.

$\frac{q}{r}+\frac{s}{r}\\\\=\frac{q + s}{r}$

For example

$\frac{3}{5}+\frac{4}{5}\\\\=\frac{3 + 4}{5}\\\\=\frac{7}{5}$

So, Hamdan is correct.

6 0

3 years ago