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Anna71 [15]
3 years ago
12

Four times a number r minus 9 is greater than 7​

Mathematics
1 answer:
lana [24]3 years ago
4 0

Answer: 4r - 9 > 7, r= 4

Step-by-step explanation: Add 9, 4r > 16, divide by 4 to get the value of ‘r’ by itself

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Which inequality represents the value of x that ensures triangle abc exists?
olasank [31]

Answer:

Option A.

Step-by-step explanation:

According to triangle inequality theorem, a triangle exists if the sum of two sides is greater that third side.

Apply this theorem on each combination.

Case I: (2x+4)+6x>18

8x+4>18

8x>14

x>\dfrac{14}{8}

x>\dfrac{7}{4}      ...(1)

Case II: (2x+4)+18>6x

2x+22>6x

22>4x

\dfrac{22}{4}>x

\dfrac{11}{2}>x     ...(2)

Case III: 6x+18>2x+4

6x-2x>4-18

4x>-14

x>-\dfrac{14}{4}

x>-\dfrac{7}{2}     ...(3)

On combining (1), (2) and (3), we get

\dfrac{7}{4}

Therefore, the correct option is A.

3 0
3 years ago
X-4=10;4x+1=57<br>i need to change the first equation into to the second equation.
cestrela7 [59]

Is this what you mean this is what i understood.



X-4=10;4x+1=57


First equation solve for x.

X-4=10

Add 4 both sides

X=10+4


X=14

Second equation substitute your x answer into second equation to make both sides equal.

4x+1=57

4(14)+1=57

56+1=57

57=57

4 0
3 years ago
What is -7 + -9 A. -16 B. -2 C. 2 D. 16​
nataly862011 [7]

Answer:

is A. -16

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Plz help me plz I give you brainliest
iren2701 [21]
It is 5,250. 35% percent of 15,000 is 5,250 which is the answer
3 0
3 years ago
Read 2 more answers
Maggie and her sister bought for their mother that gift of $54.75. maggie contributed $26 to the gift. write an addition equatio
natita [175]

Answer:

54.75 = 26 + x

Step-by-step explanation:

You can solve for x by subtracting 26 from both sides of the equation.

3 0
3 years ago
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