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MissTica
2 years ago
8

Show by substitution whether the number r is a solution of the corresponding quadratic equation.

Mathematics
1 answer:
Stels [109]2 years ago
3 0

Answer:

It's choice B.

Step-by-step explanation:

When r= -11,

x^2 + 8x - 33 =  (-11)^2 - 88 - 33

= 121 - 88 - 33

= 0

- so x = -11 gives a zero value and is a solution to the equation.

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54

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62-8=54

the percent decrease so you subtract

6 0
3 years ago
The vertices of triangle DEF are D(12, -8), E(-4, -8), and F(-4, 16). The triangle is dilated with a scale factor of 1/4. Estima
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5 0
2 years ago
Is 22 to 8 and 88 to 48 a proportion
Dominik [7]
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3 years ago
Read 2 more answers
A right rectangular prism is packed with cubes of side length 1 over 2 inches. If the prism is packed with 5 cubes along the len
Dmitry [639]

Answer:

<em>Answer: C.Fraction 11 and 1 over 4 cubic inches</em>

Step-by-step explanation:

The volume of a rectangular prism of length L, width W, and height H is given by:

V=LWH

The prism is packed with cubes of a side length of a=1/2 inch. The volume of each cube is:

V_c=a^3=\left(\frac{1}{2}\right)^3=\frac{1}{8}\ in^3

The prism is packed with L=5, W=3, and H=6, thus the volume (in cubes) is:

V=5*3*6=90\ cubes

Since each cube has a volume of \frac{1}{8} in^3:

V=90\cdot\frac{1}{8}=\frac{45}{4}

Expressing as a mixed fraction:

V=\frac{45}{4}=\frac{44+1}{4}=11\frac{1}{4}

Answer: C.Fraction 11 and 1 over 4 cubic inches

5 0
2 years ago
Can you help me with three questions?<br><br> -2x + 3<br><br> -x + 4<br><br> -x - 19
Aleksandr-060686 [28]

-2x=-3

x=1.5

-x=-4

x=4

-x=19

x=-19

Hope this helps?

6 0
3 years ago
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