Bộ 10 Đề kiểm tra giữa kì 2 Toán 10 có đáp án (Mới nhất) (Đề 6)

Song song với nhau.

Vuông góc nhau.

Cắt nhau nhưng không vuông góc.

Trùng nhau.

$a^2=b^2+c^2-bc.\cos A$.

$a^2=b^2+c^2+2bc.\cos A$.

$a^2=b^2+c^2-2bc.\cos A$.

$a^2=b^2+c^2+bc.\cos A$

$f\left(x\right)=x-1$

$f\left(x\right)=x-2$

$f\left(x\right)=-x+2$

$f\left(x\right)=-x^2+4x-4$

$\{\begin{array}{c}a>0\\ \Delta <0\end{array}$.

$\{\begin{array}{c}a>0\\ \Delta \le 0\end{array}$.

$\{\begin{array}{c}a<0\\ \Delta <0\end{array}$.

$\{\begin{array}{c}a<0\\ \Delta \le 0\end{array}$.

$x>-\frac{7}{3}.$

$x<-\frac{7}{3}.$

$x\ge -\frac{7}{3}.$

$x\ne -\frac{7}{3}$.

dương.

âm.

trái dấu với a.

cùng dấu với a.

$S=\left[-3;4\right]$.

$S=\left(-\infty ;4\right)$.

$S=\left(-3;4\right)$.

$S=\left(-3;+\infty \right)$.

$4x-11>x$.

$2x-1>3$.

$3x+2<4$.

$2x-3<0$.

$(3;2)$.

$(3;-2)$.

$(2;-3)$.

$(2;3)$.

$\{\begin{array}{c}a<0\\ \Delta <0\end{array}$.

$\{\begin{array}{c}a>0\\ \Delta \le 0\end{array}$.

$\{\begin{array}{c}a>0\\ \Delta <0\end{array}$.

$\{\begin{array}{c}a<0\\ \Delta \le 0\end{array}$.

$\frac{a\sqrt{3}}{2}$.

$a\sqrt{3}$.

$\frac{a\sqrt{2}}{2}$.

$a\sqrt{2}$.

1.

3.

2.

Vô số.

$3x+2y\le 6.$

$3x+2y\ge 6.$

$2x+3y\ge 6.$

$3x+2y+6>0.$

$f\left(x\right)>\mathrm{0,}\forall x\in \left(1;3\right)$.

$f\left(x\right)<\mathrm{0,}\forall x\in \left(1;3\right)$.

$f\left(x\right)>\mathrm{0,}\forall x\in \left(-\infty ;1\right)\cup \left(3;+\infty \right)$.

$f\left(x\right)<\mathrm{0,}\forall x\in ℝ$.

$x\ne 3$.

x = 3.

x > 3.

x < 3.

g(x) có Δ < 0, a < 0.

g(x) có Δ > 0, a < 0.

g(x) có Δ > 0, a > 0.

g(x) có Δ = 0, a < 0.

f(x) = 3x + 5.

f(x) = 4x² – 3x + 1.

f(x, y) = 2x – 3y – 1.

f(x) = 2021

$S=\frac{abc}{R}$.

$S=\frac{abc}{2R}$.

$S=\frac{4abc}{R}$ .

$S=\frac{abc}{4R}$.

(x₀;y₀) = (0;0)

(x₀;y₀) = (-1;-1)

(x₀;y₀) = (-2;-2)

(x₀;y₀) = (1;1)

$f\left(x\right)<\mathrm{0,}\forall x\in \left(-\infty ;\frac{1}{3}\right)$.

$f\left(x\right)\ge \mathrm{0,}\forall x\in ℝ$.

$f\left(x\right)>\mathrm{0,}\forall x\in ℝ$.

$f\left(x\right)\le \mathrm{0,}\forall x\in ℝ$.

$3x+2y-9=0$.

$3x+2y-6=0$.

$3x+2y-7=0$.

$3x+2y-8=0$.