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Andru [333]
3 years ago
14

7. If A = 2x + 3 and B = x^2 - 5x + 1, what is the value of A-5B?​

Mathematics
1 answer:
taurus [48]3 years ago
7 0

Answer:

\huge \boxed{ \boxed{ \tt  - 5 {x}^{2}  + 27 x- 2}}

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>
  • algebra
  • PEMDAS
<h3>given:</h3>
  • A=2x+3
  • B=x²-5x+1
<h3>to find:</h3>
  • A-5B
<h3>let's solve:</h3>

step - 1 : define

A-5B=2x+3-5(x²-5x+1)

step - 2 : solve

  1. distribute -5 to the parentheses:2x+3-5x²+25x-5
  2. rewrite:-5x²+2x+25x-5+3
  3. combine like terms:-5x²+27x-2

and

we are done

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qaws [65]

Step-by-step explanation:

S+24/7 = -2

7×{S +24/7} = -2×7

S+24 = -14

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7 0
4 years ago
Which of the following is not a Pythagorean triple?
Vinil7 [7]

Answer: D,(11,61,62)

Step-by-step explanation:28,45,53

53²=28²+45²

2,809= 784+2,025

         = 2,809

53²=2,809

(28,45,53) is a Pythagorean triple

16,63,65

65²=16²+63²

4225=256+3969

        = 4225

65²=4225

(16,63,65) is a Pythagorean triple

13,84,85

85²=13²+84²

7225=169+7056

        =7225

85²=7225

(13,84,85) is a Pythagorean triple

11,61,62

62²=11²+61²

3,844=121+3,721

        =3,842

62²=3,844

(11,61,62) is not a Pythagorean triple

4 0
3 years ago
tge width of a piece of plywood is 4 3/4 feet. the length is 5 1/3 feet. by how much does the length exceed the width?simplify t
Shkiper50 [21]
First, you have to make the denominators the same.
5 1/3 is now 5 4/12
4 3/4 is now 4 9/12

5 4/12
- 4 9/12

4 16/12
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7/12

Hope this helps!

3 0
3 years ago
anna has 300naira and ojo has 1860naira.if anna saves 50 naira a day and ojo spends 70 a day, after how many days will they have
ExtremeBDS [4]

Answer:

Anna and Ojo will have same amount after 13 days.

Step-by-step explanation:

Given that:

Anna has 300 naira

She saves 50 naira per day.

Let,

x be the number of days.

y be the amount saved

y = 50x + 300

Ojo has 1860 naira

He spends 70 naira per day.

Let,

x be the number of days

y be the amount left

y = 1860 - 70x

For equal amount, the equations will be equal

50x +300 = 1860 - 70x

50x + 70x = 1860 - 300

120x = 1560

Dividing both sides by 120

\frac{120x}{120}=\frac{1560}{120}\\x=13

Hence,

Anna and Ojo will have same amount after 13 days.

4 0
3 years ago
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