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3 years ago

Need Help asap

Mathematics

2 answers:

Andrej [43]3 years ago

4 0

Answer:

B, D, E

Step-by-step explanation:

stiks02 [169]3 years ago

3 0

We have been given a graph of piecewise function. Using that we have to select the function from given choices which is represented by graph.

g(x) = −2x, −2 < x < 0

Answer:

NO. Because g(x) = −2x has negtive slope so that means it goes downward also there is no y-intercept in g(x) = −2x but the only graph that has y-intercept in given graph goes upwawrd so that can't be answer.

g(x) = −2, x < −2

Answer:

YES. Because g(x) = −2 is a horizontal line which is only on the left side oof x=-2. Graph of this part is present in given graph. So yes it is answer.

g(x) = x − 2, −2 < x < 1

Answer:

NO. Because g(x) = x−2 has y-intercept at y=-2 and slope 1 so that means graph of g(x)= x-2 must be going upward and crossing at y=-2 butt there is no such graph. Hence this can't be answer.

g(x) = −2x + 6, x ≥ 1

Answer:

YES. Because g(x) = −2x+6 satisfies the graph which is going downward.

g(x) = x/2+ 1, –2 ≤ x < 1

Answer:

YES. Because g(x) = x/2+ 1 satisfies the graph which is going downward.

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Q: Solve by the Extraction of Roots method: -<br><br> -5x²=-50

My name is Ann [436]

Answer:

$x = \sqrt{10}$

Step-by-step explanation:

$- 5 {x}^{2} = - 50 \\ {x}^{2} = \frac{ - 50}{ - 5} \\ {x}^{2} = 10 \\ x = \sqrt{10}$

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3 years ago

Solve 2(4/x+8)=18 <br><br> Side note: 4/X is supposed to be a fraction

kirill115 [55]

9514 1404 393

Answer:

x = 4

Step-by-step explanation:

Divide by 2, subtract 8 ...

2(4/x +8) = 18

4/x +8 = 9

4/x = 1

4 = x . . . . . multiply by x

6 0

3 years ago

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The cost of renting a bus for a field trip was split evenly among 20 students. At the last minute, 10 more students joined the t

dexar [7]

By solving a linear equation, we will see that the total cost for renting the bus is $90.

<h3>What was the total cost of renting the bus, in dollars?</h3>

Let's say that the total cost is C.

When there are 20 students, each student should pay:

p = C/20

When the other 10 students are added (for a total of 30) each student pays:

p' = C/30.

We know that the cost for each of the original 20 students decreased by $1.50, so:

p' = p - $1.50

Then we have 3 equations to work with:

p = C/20

p' = C/30.

p' = p - $1.50

Now we can replace the first and second equations into the third one:

C/30 = C/20 - $1.50

Now we can solve this linear equation for C:

C/20 - C/30 = $1.50

C*( 1/20 - 1/30) = $1.50

C*(30/600 - 20/600) = $1.50

C*(10/600) = $1.50

C*(1/60) = $1.50

C = 60*$1.50 = $90

So the total cost for renting the bus is $90.

If you want to learn more about linear equations:

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2 years ago

Hallar M x M / x + y =4

hjlf

Answer:

M x M / x + y =4

Step-by-step explanation:

6 0

3 years ago

Help me iv been trying from this morning

GalinKa [24]

Answer:

i did the first

Step-by-step explanation:

1st way

Standard form: a(X-h)²+k = ( -2/3X² -16/3X -32/3) +32/3 -17/3 = -2/3(X +4)² +5

y = -2/3*X^2-16/3*X-17/3

X = -4 ±√( 15/2) = -6.7386, or -1.2614

Axis of symmetry: X= -4; Vertex (maximum)=(h,k)=( -4, 5); y-intercept is (0,-5.66666666667)

two real roots: X=-1.2613872124776866 and -6.738612787477313

5 0

3 years ago

Read 2 more answers