The solution of the system of equations 2x - y = 1 and x - 3y = 8 using Cramer's rule is, x = ; y = Check Answer Q. 2 Tick every option that applies. For finding the solution of a system of 3 equations, we find D, Dₓ, Dᵧ, and Dz. Then the system has Responses ...
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If AC = 36 and BD = 2x + 30, find x. ABCD is a trapezoid. If AC is equal to 8 x - 3 and BD is equal to 2 x + 9, find the value of x so that ABCD is isosceles. A parallelogram ABCD has lengths of sides and angles given below. Find the...
How do you write y + (1/3)x = 4 into slope-intercept form? How do you write 7x - y = 3 in slope-intercept form? How do you write y + 6 = (-3/4)(x + 8) in slope-intercept form? How do you write the slope-intercept form of 2x - 3y = -6?
1. Find: \displaystyle \operatorname { lim } _ { x \rightarrow - 1 } \frac { 6 x + 5 } { 5 x - 6 } 2. Find: \displaystyle \operatorname { lim } _ { x \rightarrow - 4 } \frac { x ^ { 2 } - 16 } { x Use two meth...
⑵冷盆端上来，梁实秋先生说他有糖尿病，不能吃带甜味的熏鱼。“冰糖肘子”端上来，他又说不能碰，因为里面加了冰糖；“什锦炒饭”端上来，他还是说不能吃，因为淀粉会转化为糖。 ⑶最后，端上“八宝饭”，我猜他一定不会碰了，没想到梁先生居然大笑道：“这个我要。”朋友提醒他“里面既有糖又有饭”。
x+10=36,解得x=26.(3)2x2-4x+3√(x^2-2x+6)=15设y=√(x^2-2x+6),则y2=x2-2x+6,方程整理得:2y2+3y-27=0,分解因式得:(2y+9)(y-3)=0,解得:y=-4.5(不符合题意,舍去)或y=3,则有x2-2x+6=9,即(x-3)(x+1)=0,解得:x=3或x=-1,经检验x=3或x=-1都是...
(2)x-5y+3y-2x; (3)a3+3a2-5a-4+5a+a2. 知识点3 代数式求值 A. if B. when C. as long as 相关知识点: 试题来源: 解析 解:(1)原式=(3+2-4)a2b=a2b. (2)原式=(1-2)x+(3-5)y=-x-2y. (3)原式=a3+(3+1)a2+(5-5)a-4 =a3+4a2-4.反馈...