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3 years ago

11

What two numbers add up to 1 but multiply to -2

1 answer:

Minchanka [31]3 years ago

3 0

Negative 1 and positive 2 will add up to 1 and will multiply to -2.

-1 + 2 = 1

-1 * 2 = -2

The two numbers are -1 and 2.

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What numbers add up to -5 and multiply to get -90

Molodets [167]

Let
x-------> the first number
y-------> the second number

we know that

$x+y=-5 \\ x=-5-y$ equation 1

$x*y=-90$ equation 2

substitute the equation 1 in equation 2

$[-5-y]*y=-90 \\ -5y- y^{2} =-90 \\ y^{2} +5y-90=0$

using a graphical tool to resolve the second order equation
see the attached figure
the numbers are
-12.311
7.311

3 0

3 years ago

Read 2 more answers

Please tell me correct and

choli [55]

Answer:

$\frac{1}{4}$ or $0.25$ (they're the same)

Step-by-step explanation:

First Part:

$4^{3} = 64$
$8^{2} = 64$
$2 = 2$
Multiply them together: 64 × 64 × 2 = 8192

Second Part:

$2^{7} = 128$
$16^{2} = 256$
Multiply them together: 128 × 256 = 32768

Wrap it all up:

8192 ÷ 32768 = 0.25 = 1/4

I hope this helps!

7 0

3 years ago

Find the area of the circle. Round your answer to the nearest hundredth. 3 in

forsale [732]

Answer:

28.27 or 28 rounded up.

7 0

3 years ago

Read 2 more answers

What is the value of the expression

Y_Kistochka [10]

Answer:

0.8

Step-by-step explanation:

We begin with the expression: $0.5+(-\frac{3}{4} )+0.25-(-\frac{4}{5} )$

First, we need to convert the fractions into decimals to make this easier.

$-\frac{3}{4}=-0.75$ and $-\frac{4}{5} =-0.8$

Once we have this, we can simplify it

$0.5-0.75+0.25-(-0.8)\\\\0.5-0.75+0.25+0.8\\\\0.75-0.75+0.8\\\\0.8$

4 0

3 years ago

A city has a populations of 38,802,500 people. estimate the population ot hte nearest ten million

Zolol [24]

Answer:

39,000,000

Roundend to the nearest 1,000,000 or

the Millions Place.

38,802,500.0000000

Roundend to the nearest 0.0000001 or

the Ten Millionths Place.

8 0

3 years ago