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3 years ago

If x and y are both negative when is x-y positive

Mathematics

2 answers:

Oduvanchick [21]3 years ago

7 0

When multiplying two negative numbers the answer is positive

jarptica [38.1K]3 years ago

4 0

Hmm

let's try some numbers

we have 3 scenarios
x>y
x=y
x<y

x>y
x=-1 and y=-2
x-y=-1-(-2)=-1+2=1
it's positive when x>y

x=y
x=-1, y=-1
-1-(-1)=-1+1=0
nope

x<y
x=-2 and y=-1
-2-(-1)=-2+1=-1
nope

x-y is positive when 0>x>y

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Find the value of x. x√5=x^4

Kaylis [27]

Answer:

x=0, $\sqrt[6]{5}$

Decimal form,

x=0,1.30766048......

Step-by-step explanation:

x $\sqrt{5}$ = $x^{4}$

x $\sqrt{5}$ - $x^{4}$ =0

(take x as a common factor)

x( $\sqrt{5}$ - $x^{3}$ )=0

So,

x=0 and $\sqrt{5}$ - $x^{3}$ =0

for $\sqrt{5$ - $x^{3}$ =0

(add $x^{3}$ for both sides)

$\sqrt{5}$ = $x^{3}$

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x= $\sqrt[6]{5}$

So,

x=0, $\sqrt[6]{5}$

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2 years ago

Ex) A nursery plants a new tree and attaches a guy wire to help support the tree

o-na [289]

Answer:

d = 5,35 ft

Step-by-step explanation: See annex

Figure in annex is clear,

sin ∠42⁰ = d / 8

And

sin ∠42⁰ = 0.669

d/8 = 0,669

d = 0,669*8

d = 5,35 ft

8 0

2 years ago

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55 points see attachment below

Ludmilka [50]

Answer:

f(3) = -20

Step-by-step explanation:

To find the value of a function, substitute the number for the variable and do the arithmetic.

f(x) = -2x^2 +x -5 . . . . . . given

f(3) = -2(3^2) +(3) -5 . . . . function value for x = 3

f(3) = -2(9) +3 -5 = -18 +3 -5

f(3) = -20

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2 years ago

Y+b=10???????????????

tatyana61 [14]

5+5=10

y=5
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2 years ago

Breakfast Bar’s scrambled egg recipe uses 8 eggs to feed 5 people. How many eggs are they going to need to serve 100 people on S

Afina-wow [57]

Answer:

160

Step-by-step explanation:

If 5 people = 8 eggs

1 person = 8÷5 = 1.6 eggs

100×1.6= 160 eggs

3 0

1 year ago

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