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Zolol [24]
3 years ago
8

Simplify the expression show work 15-3[2+6(-3)]

Mathematics
1 answer:
arsen [322]3 years ago
8 0

Answer:

•15-3 [2+6(-3)]

●Applying BODMAS:

•15-3 [2+(-18)]

•15-3 (2-18)

•15-3 (-16)

•15+48

•63

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What are the solutions to x2 + 8x + 7 =.b?
loris [4]

Answer:

x = 7 and x = -1

Step-by-step explanation:

First, we need to factor this quadratic.

To do this, start by finding all the factors of C.

7 x 1, -7 x -1

Now, we need to pick out the factors that add up to the b number, which is 8. That would be 7 and 1.

Now, we can use the numbers 7 and 1 to create two binomials.

( x + 7 ) ( x + 1 ) = 0

The last thing we need to do is to set those binomials to 0 and solve each of them individually.

x + 7 = 0

x = - 7

Solving the first binomial gives us our first solution, -7.

x + 1 = 0

x = -1

Solving the second one gives us our second solution, -1.

The solutions are -7 and -1.

4 0
3 years ago
The slide at the playground has a height of 6 feet.The base of the slide measured on the ground is 8 feet.what is the length of
Mariulka [41]

Answer: 10ft

Step-by-step explanation:

Using the Pythagorean theorem (a² + b² = c²) you would end up with an equation like this: 36 + 64 = 100. You would then square root 100 and the answer would be 10 ft

7 0
3 years ago
Is the square root of 4 rational
WITCHER [35]

Answer:

yes

Step-by-step explanation:

3 0
3 years ago
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If x2 = 30, what is the value of x?<br> A. ±60 B. ±15 C. ±square root of 30 D.±square root of 15
anygoal [31]

Answer:

  C.  ±square root of 30

Step-by-step explanation:

Apply the square root function to both sides of the equation:

  \sqrt{x^2}=\sqrt{30}\\\\|x|=\sqrt{30}\\\\x=\pm\sqrt{30}

_____

The absolute value equation has two solutions. They match choice C.

6 0
3 years ago
What is the value of "h"?
kotegsom [21]

Answer:

h = 76

Step-by-step explanation:

2 + h - 48 = 30

h + 2 - 48 = 30

h - 46 = 30

h - 46 + 46 = 30 + 46

h = 76

4 0
2 years ago
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