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sesenic [268]
3 years ago
10

Solve the inequality 6h−5(h−1)≤7h−11 and write the solution in interval notation. Use improper fractions if necessary.

Mathematics
1 answer:
Kobotan [32]3 years ago
6 0

Answer:

h \geq 2\frac{2}[3}

Step-by-step explanation:

We solve the inequality similarly to how we would solve an equalitu.

6h - 5(h-1) \leq 7h - 11

6h - 5h + 5 \leq 7h - 11

h - 7h \leq -11 - 5/

-6h \leq -16

Multiplying everything by -1

6h \geq 16

Simplifying by 2

3h \geq 8

h \geq \frac{8}{3}

8 divided by 3 is 2 with rest two. So as a improper fraction, the answer is:

h \geq 2\frac{2}[3}

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Find an equation in standard form of the parabola that passes through (-2, 9), (-4, 5), and (1, 0)
Natasha_Volkova [10]

Answer:

y=-1x^2 -4x +5

Step-by-step explanation:

Given points (-2, 9), (-4, 5), and (1, 0)

General quadratic equation is y=ax^2 +bx+c

plug in each point and frame three equations

(-2,9)

9=a (-2)^2+b(-2) + c

4a-2b+c=9  equation 1

(-4,5)

5 = 16a -4b+c   equation 2

(1,0)

0= a + b + c   equation 3

Use equation 1  and 3

multiply third equation by -1  and then add it with equation 1

4a - 2a + c = 9

-a  -b     -c = 0

---------------------

3a - 3b = 9

divide whole equation by 3

a - b = 3   equation 4

use equation 2  and 3

16a -4b+c  = 5

-a   -b  -c =0

------------------------

15a -5b = 5

divide whole equation by 5

3a -b= 1  equation 5

use equation 4  and 5 . multiply equation 5 by -1

-3a +b =-1

a - b = 3

-----------------------

-2a = 2

a= -1

plug it in equation 4  and find out b

a - b = 3

-1 - b = 3

add 1 on both sides

-b = 4  so b= -4

Now plug in the values and find out c

a + b+c = 0

-1 -4 + c= 0

-5 +c =0

c=5

Now plug in the values in the general equation

y=ax^2 +bx+c

y=-1x^2 -4x +5





8 0
4 years ago
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Step-by-step explanation:

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Step-by-step explanation:

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