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Salsk061 [2.6K]
3 years ago
12

How do you solve 7x-2=x²-10? Can you show the steps please :)

Mathematics
1 answer:
nekit [7.7K]3 years ago
8 0

Answer: x=−1 or x=8

Step-by-step explanation: 7x−2=x2−10

Learn how to solve quadratic equations

Khan Academy Video: Solving a quadratic by factoring

Khan Academy Video: Quadratic Formula 1

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Mary put new tiles on her kitchen floor. The floor measures 6 feet long by 5 feet wide. she used 10 tiles to cover the entire fl
balu736 [363]

Answer:

30 square feet

Step-by-step explanation:

Number of tiles used for covering the kitchen floor = 10

Area covered by the floor = 6 * 5 feet^2                                                

                                        = 30 square feet

Length of each tiles = 3 feet

Width of each tiles = w feet

Area covered by each tiles = 3w square feet

Then the equation can be written as

3w * 10 = 30

30w = 30

w= 30/30      

   = 1 feet

10 *3w = 30

6 0
3 years ago
Choose the correct solution and graph inequality q + 1/3 > 1/2​
kherson [118]

Answer:

first choice

Step-by-step explanation:

make 1/3 and 1/2 a common denominator, which is 6.

1x2

-      = 2

         -

3x 2   6

1 x 3  

-       =    3

             -

2 x 3      6

now u have 2/6, and 3/6

u subtract 2/6 by 3/6 since ur finding a solution to an inequality. remember to do the opposite sign.

2/6-2/6 = 0 (u cancel that out)

3/6 - 2/6 = 1/6

now u have

q>1/6

since there's no 1/6 the first choice is the most accurate

7 0
3 years ago
Mark estimates that the distance from his house to his school is 15.5 mi. The actual distance is 14.5 mi.
lapo4ka [179]
So the error is 1 mile

I ask what % of 15.5 = 1

How you write this;

x/100 *15.5 = 1

15.5x = 100

x = 100/15.5

x = 6.451629 round up 6.45

% error is 6.45 %
7 0
3 years ago
Read 2 more answers
Can 8/45 be simplified?
AleksandrR [38]
8/45 is already in simplest form because it has NO common denominator to divide both, the numerator and the denominator with. So no, 8/45 cannot be simplified. <span />
8 0
3 years ago
Read 2 more answers
Two inches shorter than Kathryn's height
vfiekz [6]
What do you mean???? Maybe give more details then I can help
7 0
3 years ago
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