This is a system of equations, meaning you find the value of one variable and substitute it into the other equation
if y=-x^2-4x+23 we can put that into the second equation for y
This gives us 2x+(-x^2-4x+23)=15
Lets simplify this and set it equal to 0 by moving the 15 over
-x^2-2x+8=0
This gets us x=-4, 2
Lets try plugging both those back into our first equation and see what value of y we get
y=-(-4^2)-4(-4)+23; y=23
y=-(2^2)-4(2)+23; y=11
So you get two sets of solutions
(-4,23) and (2,11)
Answer:
42°
Step-by-step explanation:
3x + 54° = 180° [Supplementary angles]
=> 3x = 180 - 54
=> 3x = 126

=> <u>x = 42</u><u>°</u><u> </u><u>(Ans)</u>
Let's solve your equation step-by-step.<span><span><span><span>
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<span><span>+w</span>=<span>5</span></span><span>

</span>
Step 1: Simplify both sides of the equation.<span><span>
w+</span></span>

<span>=</span><span>

</span>
Step 2: Add

to both sides.<span><span><span>
w+</span></span></span>

<span><span>+</span></span><span>

</span><span>=</span>

<span>+</span><span>

</span><span>
w=</span><span>

</span>
Answer:<span>
w=5</span><span>

</span>
First, let us write the place values of 4 in A and B.
In A, the number is 16.942 and the place value of 4 is 0.04.
In B, the number is 9.214 and the place value of 4 is 0.004.
It is clear that 0.04 > 0.004.
Hence, statement C best compares the value of 4 in each number.
Answer:
V is greater than or equal to 62