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jolli1 [7]
3 years ago
8

Is this right?? please help!

Mathematics
1 answer:
Ganezh [65]3 years ago
4 0

Answer:

  6 < x < 8

Step-by-step explanation:

The compound inequality in this instance represent the "and" condition, not the "or" condition.* We might solve it like this.

  -47 > 1 -8x > -63 . . . . given

Multiply by -1:

  47 < -1 +8x < 63

Add 1:

  48 < 8x < 64

Divide by 8:

  6 < x < 8

______

* You can tell this is the case by looking at the ends of the given statement:

  -47 > -63 . . . . a true statement, so the solution set will be an intersection, not a union.

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A number increased by 4 is the same as 19 minus 2 times the number. (10 points) plss help tkssss
ohaa [14]

Step-by-step explanation:

x+4=19-2x

Im pretty sure Im right!

4 0
3 years ago
Meranda works for 7 hours at 10.25 per hour how much does she earn ?
frosja888 [35]
You take how much she makes and multiply it by the hours she works
 10.25*7
=71.75
5 0
3 years ago
3. You can ride your bike 1/5 of a mile per minute. If it takes you 3 1/3 minutes to get
Allushta [10]

Answer:

2/3

.......................

6 0
3 years ago
2x + 5y = -3<br> 2x + 2y = 6
oee [108]

Answer:

(6, - 3 )

Step-by-step explanation:

Given the 2 equations

2x + 5y = - 3 → (1)

2x + 2y = 6 → (2)

Subtracting (1) from (2) term by term will eliminate the x- term

(2x - 2x) + (2y - 5y) = 6 - (- 3), that is

- 3y = 9 ( divide both sides by - 3 )

y = - 3

Substitute y = - 3 in either of the 2 equations and solve for x

Substituting y = - 3 in (1)

2x + 5(- 3) = - 3

2x - 15 = - 3 ( add 15 to both sides )

2x = 12 ( divide both sides by 2 )

x = 6

Solution is (6, - 3 )

8 0
3 years ago
Read 2 more answers
–3 = –2x2 + 2x
wel

Answer:

Determine the next step for solving the quadratic equation by completing the square.

0 = –2x2 + 2x + 3

–3 = –2x2 + 2x

–3 = –2(x2 – x)

–3 + = –2(x2 – x + )

StartFraction negative 7 Over 2 EndFraction = –2(x – StartFraction 1 Over 2 EndFraction)2

StartFraction 7 Over 4 EndFraction = (x – StartFraction 1 Over 2 EndFraction)2

The two solutions are Plus or minus StartFraction StartRoot 7 EndRoot Over 2 EndFraction

-7/2 = -2(x - ½)²

Step-by-step explanation:

0 = –2x^2 + 2x + 3

Subtract 3 from each side

-3 = –2x^2 + 2x

Factor out the -2

-3 =- 2(x^2 -x)

Take the coefficient of x and divide by 2 and square it

-1 /2 = -1/2 ^2 = 1/4

Add it to each side  Remember the -2 on the outside so we need to multiply it by -2  

-2 *1/4 =  -1/2

-3 -1/2= -2(x^2 -x +1/4)

-7/2 = -2(x^2 -x +1/4)

-7/2 = -2(x-1/2)^2

7/2 = -2(x - ½)²

4 0
3 years ago
Read 2 more answers
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