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3 years ago

5

Which value, when placed in the box, would result in a system of equations with infinitely many solutions?

2 answers:

Elina [12.6K]3 years ago

8 0

Answer:

a

Step-by-step explanation:

SSSSS [86.1K]3 years ago

7 0

For a system of equations to have infinitely many solutions, they have to intersect infinite times. For linear functions, this can only happen if they are the same line. Let's rearrange the second equation so that it is easier to compare the two functions.

2y-4x=b
2y=4x+b
y=2x+b/2

Because the linear functions must be the same function, set them equal to each other to find b.

2x+b/2=2x-5
b/2=-5
b=-10

So the missing number is -10.

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Find the surface area of the square pyramid 8mm 6mm

bija089 [108]

Answer:

136 mm²

Step-by-step explanation:

$A=a^{2} +2a\sqrt{\frac{a^{2} }{4} } +h^{2}$

$A=6^{2} +2(6)\sqrt{\frac{6^{2} }{4} } +8^{2}$

$A=36 +12\sqrt{\frac{36 }{4} } +64$

$A=36 +12\sqrt{9 } +64$

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$A=36 +36+64$

A = 136

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3 years ago

The quadratic 8x^2+12x-14 has two real roots. What is the sum of the squares of these roots? Express your answer as a common fra

leonid [27]

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Which solid has a greater volume? O A. Figure A 48 B. Figure B O C. they are equal A 2 O D. need more information

MatroZZZ [7]

9514 1404 393

Answer:

B. Figure B

Step-by-step explanation:

The figure is difficult to read. We assume the height of the pyramid is 9, and the radius of the cylinder is 1.

The pyramid volume is ...

V = 1/3Bh

V = 1/3(4²)(9) = 48 . . . cubic units

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The cylinder volume is ...

V = πr²h

V = π(1²)(48) = 48π . . . cubic units

The cylinder has π times as much volume as the pyramid. Figure B is larger.

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<em>Additional comment</em>

If the diameter (not the radius) of the cylinder is 1 unit, then its volume is 12π cubic units and the pyramid has more volume.

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3 years ago

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DiKsa [7]

Answer:

slope = 3

Step-by-step explanation:

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3 years ago

-6(y + 15) = -3y + 6<br> What value of y makes the equation true? Enter the answer in the box.

STatiana [176]

Answer:

y = −32

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

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3 years ago