2 years ago

What are two numbers that multiply to -20 and add to 1

Mathematics

1 answer:

True [87]2 years ago

7 0

Answer:

5 and -4

Step-by-step explanation:

Answer is 5 and -4

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Help me pls this is hard

ohaa [14]

Answer:

Opposite angles are right angles.

Step-by-step explanation:

There are no right angles in a parallelogram.

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2 years ago

miles bought 3.75 acres of land in 1993. in 1197, he bought enough land to double his property. then in 2001, miles was forced t

Musya8 [376]

Miles has 3.45 acres of land now. You're welcome.

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3 years ago

Mark and Amber Vinson have $22,000 to invest in two accounts, part at 10% and part at 12%. If they want to earn a return of at l

KengaRu [80]

22,000 x 2= 44,000

120%

So I think it would equal to 345,600,0

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3 years ago

Solve for x, y, and z

zloy xaker [14]

Answer:

The solution is x=1,y=2,z=3

Step-by-step explanation:

The given system of equations is ;\

2x−3y+4z=8...(1)

3x+4y−5z=−4...(2)

4x−5y+6z=12...(3)

Make x the subject in equation (1)

$x=\frac{8+3y-4z}{2}...(4)$

Put equation (4) into equation (2) and (3)

$3(\frac{8+3y-4z}{2})+4y-5z=-4$

Multiply through by;

$3(8+3y-4z)+8y-10z=-8$

Expand;

$24+9y-12z+8y-10z=-8$

Simplify;

$17y-22z=-32...(5)$

Equation (4) in (3)

$4(\frac{8+3y-4z}{2})-5y+6z=12$

$2(8+3y-4z)-5y+6z=12$

$16+6y-8z-5y+6z=12$

$y-2z=-4$

$y=2z-4...(6)$

Put equation (6) into equation (5)

$17(2z-4)-22z=-32$

$34z-68-22z=-32$

$34z-22z=-32+68$

$12z=36$

z=3

Put z=3 into equation (6)

y=2(3)-4=2

Put y=2 and z=3 into equation 4

$x=\frac{8+3(2)-4(3)}{2}=1$

The solution is x=1,y=2,z=3

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2 years ago

Which of the following statements would not translate to the equation 8 ÷ x = -4?

Hoochie [10]

The answer is letter B

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2 years ago