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Tomtit [17]
3 years ago
11

Please answer this question!! 41 points and brainliest!

Mathematics
2 answers:
Ymorist [56]3 years ago
7 0

Answer:

x>-3

Step-by-step explanation:

To solve equations, we use inverse operations. Normally, we use PEMDAS to simplify an equation. To solve it, we use the inverse of each in this order SADMEP. Solving an inequality is the same except for step. When dividing by a negative, the sign of the inequality changes.

We have 5x+7>2(x-1)\\5x+7>2x-2 in simplified form. We begin by subtracting or adding constants across the equal sign. Then doing the same with the variable terms. We finish by dividing by the coefficient of the variable term.

5x+7>2x-2\\5x+7-7>2x-2-7\\5x>2x-9\\5x-2x>2x-2x-9\\3x>-9\\x>-3

To graph, we draw a number line, draw an open circle at -3.

Since it is not equal to, we do not fill it in. We leave it open. We also draw an arrow to the right of -3

madam [21]3 years ago
4 0

Answer:

x > -3

Step-by-step explanation:

5x+ 7 > 2(x-1)

Distribute the 2 on each side

5x+7 > 2x -2*1

5x+7 > 2x-2

Subtract 2x from each side

5x-2x +7 > 2x-2x-2

3x + 7>-2

Subtract 7 from each side

3x+7-7>-2-7

3x>-9

Divide by 3 on each side

3x/3 >-9/3

x > -3


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The power 9^2 is equivalent to 81. What is the value of 9^2?
choli [55]

Answer:

I guess it would be -9

Step-by-step explanation:

Since a negative times a negative is positive... ig thats your answer.

6 0
3 years ago
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Find the values of x and y by writing two equations and solving the system of equations.
Eva8 [605]

Answer:

y=2 x=5

Step-by-step explanation:

3x-2y=11

2x-3y=4

you multiply both equations to cancel one variable out. in this case you multiply the first equation by 2 and the second by -3

     6x-4y=22

+    -6x-9y=12

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

0x+5y=10

y=2

you plug that in either equation

3x-2(2)=11

3x-4=11

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4 0
3 years ago
How many centimeters long is a leg of an isosceles right triangle if its hypotenuse has a length of 8√2 centimeters?
andrew-mc [135]

Answer:

The leg is 8 cm long

Step-by-step explanation:

An isosceles right triangle has the length of its hypotenuse and opposite equal

Let us call the length x

From Pythagoras’ , the square of the hypotenuse equals the sum of the squares of the two other sides

Thus, we have ;

x^2 + x^2 = (8 √2)^2

2x^2 = 128

x^2 = 128/2

x^2 = 64

x= √64

x = 8 cm

7 0
3 years ago
The low temperatures for four nights in December for a city are recorded below.
photoshop1234 [79]

Answer:

the answer is <u>A</u><u> </u>

Step-by-step explanation:

its because -4 is the coldest and 3 is the warmest out of the rest

5 0
3 years ago
40 times something = 3600<br>what's the other number<br><br>​
sammy [17]

Answer:

90

Step-by-step explanation:

3600 / 40 = 90

so

90 x 40 = 3600

3 0
3 years ago
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