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enyata [817]
3 years ago
10

Which of the following is equivalent to the expression (4x + 7)(x - 8)?

Mathematics
1 answer:
igomit [66]3 years ago
6 0

Answer:

4x^2-25x-56

Step-by-step explanation:

I'm not sure what your choices are, but I am assuming to need to simplify.

Here is how you do it:

(4x + 7)(x - 8) - Multiply 4x and x

     4x^2

(4x + 7)(x - 8) - Multiply 4x and -8

     -32x

(4x + 7)(x - 8) - Multiply 7 and x

     7x

(4x + 7)(x - 8) - Multiply 7 and -8

     -56

Now, add all of the terms together.

4x^2-32x+7x-56

    -32x+7x = -25x

4x^2-25x-56

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elixir [45]

160000000 =

move the decimal so only one number is to the left

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Maurinko [17]

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Step-by-step explanation:

5 0
3 years ago
Jenna and Heidi together have $60. Jenna has $9 more than twice Heidi’s amount. How much money does each have?
Marina86 [1]

Jenna has $43 and Heidi has $17.

Step-by-step explanation:

Total amount = $60

Let,

Amount of Jenna = x

Amount of Heidi = y

According to given statement;

x+y=60   Eqn 1

x=2y+9   Eqn 2

Putting value of Eqn 2 in Eqn 1;

(2y+9)+y=60\\2y+9+y=60\\3y=60-9\\3y=51

Dividing both sides by 3,

\frac{3y}{3}=\frac{51}{3}\\y=17\\

Putting y=17 in Eqn 2

x=2(17)+9\\x=34+9\\x=43

Jenna has $43 and Heidi has $17.

Keywords: linear equations, substitution method

Learn more about substitution method at:

  • brainly.com/question/10736268
  • brainly.com/question/10764770

#LearnwithBrainly

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4 years ago
Evaluate:
Anit [1.1K]

-(-9) - 14 - (6) + 5 + (-8) - 2 - (11) - (-2)

9 - 14 - (6) + 5 + (-8) - 2 - (11) - (-2)

-5  - (6) + 5 + (-8) - 2 - (11) - (-2)

-11+ 5 + (-8) - 2 - (11) - (-2)

-6+ (-8) - 2 - (11) - (-2)

-14 - 2 - (11) - (-2)

-16 - (11) - (-2)

-27+2

-25

Choice A

8 0
3 years ago
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