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alina1380 [7]
3 years ago
8

Look at the picture below to help. pls

Mathematics
1 answer:
Nesterboy [21]3 years ago
5 0
X > -8

Explanation:
times the 7 on both sides, you get s+1>-7
minus the one on both sides and you get s>-8 open circle on negative 8 going to the right is your final answer. open circles are for inequalities with just a less/greater than sign. closed circles are for less/greater than or EQUAL to.
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If sarah is 24 years younger than her mother and if the sum of their age is 68 how old is sarah
UkoKoshka [18]
The sum of two numbers if just the numbers added together, so you would just need to do some simple algebra.

The ages added together are 68, and the opposite of addition is subtraction!

(total age) - (sarahs age) = (mothers age)
68 - 24 = 44

44 should be her mothers age!


(If you were trying to calculate the sum of their ages, you would just add them together, and 24 + 44 = 68)

7 0
3 years ago
Choose the property that justifies the following statement. If x = 2 and x + y = 3, then 2 + y = 3.
user100 [1]

  .................................

4 0
3 years ago
Find the directional derivative of f(x,y,z)=z3−x2yf(x,y,z)=z3−x2y at the point (−5,5,2)(−5,5,2) in the direction of the vector v
olga_2 [115]

We are given

f=z^3 -x^2y

Firstly, we can find gradient

so, we will find partial derivatives

f_x=0 -2xy

f_x=-2xy

f_y=0 -x^2

f_y=-x^2

f_z=3z^2

now, we can plug point (-5,5,2)

f_x=-2*-5*5=50

f_y=-(-5)^2=-25

f_z=3(2)^2=12

so, gradient will be

gradf=(50,-25,12)

now, we are given that

it is in direction of v=⟨−3,2,−4⟩

so, we will find it's unit vector

|v|=\sqrt{(-3)^2+(2)^2+(-4)^2}

|v|=\sqrt{29}

now, we can find unit vector

v'=(\frac{-3}{\sqrt{29} } , \frac{2}{\sqrt{29} } , \frac{-4}{\sqrt{29} })

now, we can find dot product to find direction of the vector

dir=(gradf) \cdot (v')

now, we can plug values

dir=(50,-25,12) \cdot (\frac{-3}{\sqrt{29} } , \frac{2}{\sqrt{29} } , \frac{-4}{\sqrt{29} })

dir=(-\frac{150}{\sqrt{29} } - \frac{50}{\sqrt{29} } - \frac{48}{\sqrt{29} })

dir=-\frac{248\sqrt{29}}{29}.............Answer



7 0
4 years ago
Read 2 more answers
Which number is larger 2.5 or the absolute value of 2.5
11111nata11111 [884]

Answer:

they are both =

Step-by-step explanation:

it's the same number

6 0
3 years ago
Read 2 more answers
Algebra I: Quadratics
sertanlavr [38]
The answer id 12 meters.divide -2x^2+20x+48 by 2 to get x alone and then umbrella
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