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Arada [10]
3 years ago
15

Hello i need some help!

Mathematics
2 answers:
loris [4]3 years ago
8 0
3(2-b) can be rewritten as 3•2 - 3b

In the distributive property you are distributing the number outside the parentheses to the numbers inside.
murzikaleks [220]3 years ago
5 0

Answer:

3×2 + 3×-b

Step-by-step explanation:

3(2-b)\\= 3\times 2 + 3\times (-b)\\\\= 6 -3b

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Solve each quadratic equation.<br> a) 2(x + 5) (2x - 3) = 0
damaskus [11]

Answer:

{4x}^{2}  + 14x - 30 \\

Step-by-step explanation:

2(x + 5)(2x - 3)\\ (2x + 10)(2x - 3)\\ 2x(2x - 3) + 10(2x - 3)\\ 4 {x}^{2}  - 6x + 20x - 30\\  {4x}^{2}  + 14x - 30\\

8 0
3 years ago
Use rounding to estimate the product.<br><br> 11.45 × 5
a_sh-v [17]

Answer:

57.3

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just rounded up one

8 0
3 years ago
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construct a right-angled triangle ABC where angle A =90 degree , BC= 4.5cm and AC= 7cm. please ans fast........ Very urgent. Pls
Katena32 [7]

Answer and Step-by-step explanation: The described right triangle is in the attachment.

As it is shown, AC is the hypotenuse and BC and AB are the sides, so use Pytagorean Theorem to find the unknown measure:

AC² = AB² + BC²

AB^{2} = AC^{2}-BC^{2}

AB =\sqrt{AC^{2}-BC^{2}}

AB =\sqrt{7^{2}-4.5^{2}}

AB =\sqrt{28.75}

AB = 5.4

Then, right triangle ABC measures:

AB = 5.4cm

BC = 4.5cm

AC = 7cm

6 0
3 years ago
Paige rides her bike around town. She can ride one half of a mile in 1 30 ith of an hour. If she continues to ride at the same p
oksano4ka [1.4K]
She could travel 15 miles in an hour
6 0
3 years ago
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If a university wants to maintain a 14:1 ratio between students and teachers, how many teachers would be needed to accommodate 8
kolezko [41]
The answer is C. 64 teachers. 

14 x 64= 896 
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