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Evgesh-ka [11]
4 years ago
12

Help answer this plz

Mathematics
2 answers:
Sphinxa [80]4 years ago
8 0
X=-1 is the answer. Hope that helps!
mote1985 [20]4 years ago
7 0
First, distribute the 10 on the right side, you'll get 20x+30.
Second, combine like terms on the left side which will be 11 and -4, and you'll get 7.
Third, move the -3x to the right side of the equation and combine terms, which will make it 23x.
Fourth, move the 30 to the left side of the equation and combine like terms which will make it -23x.
Lastly, divide 23x on both sides and after you do that, your answer should be x= -1
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What would the graph of<br> Х/4.8 &lt; 1.25 look like?
Rina8888 [55]

Answer:

Step-by-step explanation:

x/4.8 < 1.25                             Multiply both sides by 4.8

4.8 x /  4.8 < 1.25*4/8

x < 6

What this means is that every every number less than 6 is a solution to this inequality.

Graph 32 (shown below is a red area. The important thing to note is that the boundary at 6 is dotted which means it is not included in the solution.

What you want is more closely related to a number line and sort of looks like this

-----o-----o-----o-----o-----o-----o-----o-----o

    -1      0      1       2      3      4      5     6

<===============================o                                                              

Explanation

The top line is the actual number line or the graph

o------- is the way it is made.

The second line are the number divisions of the number line

The third line shows which way the inequality goes and that it is open at 6. Open means that you can get close to 6 but you can't touch 6.

5 0
3 years ago
Find the directional derivative of the function at the given point in the direction of the vector v. f(x, y, z) = xey + yez + ze
attashe74 [19]

Answer: 6 / √26

Step-by-step explanation:

Given that f(x, y, z) = xe^y + ye^z + ze^x

so first we compute the gradient vector at (0, 0, 0)

Δf ( x, y, z ) = [ e^y + ze^x,  xe^y + e^z,  ye^z + e^x ]

Δf ( 0, 0, 0 ) = [ e⁰ + 0(e)⁰, 0(e)⁰ + e⁰, 0(e)⁰ + e⁰ ] = [ 1+0 , 0+1, 0+1 ] = [ 1, 1, 1 ]

Now we were also given that  V = < 4, 3, -1 >

so ║v║ = √ ( 4² + 3² + (-1)² )

║v║ = √ ( 16 + 9 + 1 )

║v║ = √ 26

It must be noted that "v"  is not a unit vector but since ║v║ = √ 26, the unit vector in the direction of "V" is ⊆ = ( V / ║v║)

so

⊆ =  ( V / ║v║) = [ 4/√26, 3/√26, -1/√26 ]

therefore by equation   D⊆f ( x, y, z ) = Δf ( x, y, z ) × ⊆

D⊆f ( x, y, z ) = Δf ( 0, 0, 0 ) × ⊆ = [ 1, 1, 1 ] × [ 4/√26, 3/√26, -1/√26 ]

= ( 1×4 + 1×3 -1×1 ) / √26

= (4 + 3 - 1) / √26

= 6 / √26

8 0
4 years ago
Casey and her friends want to buy some fruit smoothies. suppose they go to the smoothie shop that advertises a sale of two fruit
Oxana [17]

Answer:

$15

Step-by-step explanation:

If you have 2 smoothies for $5 you need to take 5 times 3. Cause we have split the 6 into 3 cause you get 2 smoothies for $5.

6 0
3 years ago
A two column table with 5 rows. The first column, x, has the entries, negative 3, negative 1, 1, 3. The second column, y, has th
kupik [55]

Answer:

y=3 x=1

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Mrs. Dodson has a jar full of pennies and quarters. There are 120 coins in the jar worth a
Anton [14]

<em><u>Answer: 10.</u></em>

<em><u /></em>

<em><u>Step-by-step explanation:</u></em>

<em><u>DIVISION. 120/12.</u></em>

<em><u>That is hard! Here's a trick.</u></em>

<em><u>12x9= 99=9=108. Or 12x6=66+6=72.</u></em>

<em><u>We will stick with 12x9,  that equals 108.</u></em>

<em><u>We should add another 12 until we get to 120. </u></em>

<em><u>108+12=120. That is 10 times. The trick was...</u></em>

<em><u>dividing by 12 is hard, so lets say 12x4. I can put 4 and 4 together.</u></em>

<em><u>44 then and another 4. That is 48. So 12x4=48.</u></em>

<em><u /></em>

5 0
3 years ago
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