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lesantik [10]
3 years ago
13

Solve for x: 3 < x + 3 < 6 45 points.

Mathematics
2 answers:
Bezzdna [24]3 years ago
8 0

Answer:

0 < x < 3

Step-by-step explanation:

3 < x + 3 < 6

Subtract 3 across the inequality

3 - 3 < x + 3 - 3 < 6 - 3

0 < x < 3

irinina [24]3 years ago
3 0

Answer:

0 < x < 3

Step-by-step explanation:

3 < x + 3 < 6    (Subtract 3 from all terms)

0 < x < 3    (The third option is the answer)

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ArbitrLikvidat [17]

Answer: y=-4x+13

Explanation : because it is :)

4 0
2 years ago
z varies directly with x and inversely with y^2. When x = 2 and y = 5, z = 8. What is the value of z when x = 4 and y = 9?
Ivanshal [37]
Direct variation is  y = kx

Inverse variation is y = k/y

if z varies directly with x, then the equation would be z = kx

if z varies inversely with y^2 then the equation would be z = k/y^2. Combining, these two, we have z = kx/y^2

We use the first set of values to find the constant k:

x = 2, y = 5, z = 8:

8 = 2x/25, k = 100. Now we use the second set of values to find z:

x = 4, y = 9, k = 100 and z is unknown:

z = (4X100)/9^2

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*plz rate brainliest
4 0
3 years ago
Read 2 more answers
Please help me with this question
adoni [48]

Answer:

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5 0
3 years ago
Which shows the correct substitution of the values a, b, and c from the equation 0 = 4x2 + 2x – 1 into the quadratic formula bel
neonofarm [45]

Answer:

x = StartFraction negative 2 plus or minus StartRoot 2 squared minus 4(4)(negative 1) EndRoot Over 2(4) EndFraction

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

ax^2+bx+c=0

is equal to

x=\frac{-b(+/-)\sqrt{b^2-4ac} }{2a}

in this problem we have

4x^2 + 2x - 1=0

so

a=4

b=2

c=-1

substitute in the formula

x=\frac{-2(+/-)\sqrt{2^2-4(4)(-1)} }{2(4)}

therefore

x = StartFraction negative 2 plus or minus StartRoot 2 squared minus 4(4)(negative 1) EndRoot Over 2(4) EndFraction

8 0
2 years ago
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Solve for b, i already solved for A <br> will give brainliest
larisa86 [58]

Answer:

b=23 degrees

Step-by-step explanation:

a was 66 degrees so b=23 degrees   180-90-66=23

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3 years ago
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