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astra-53 [7]
3 years ago
9

What is the opposite of the opposite of -1.4

Mathematics
2 answers:
worty [1.4K]3 years ago
3 0
Its still going to be -1.4
Sergio [31]3 years ago
3 0

Pretty sure it's 1.4 the opposite of  7 is -7. I might be thinking of absolute value so don't take my answer as solid. I hope it helps

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(a+4)² - 3²<br> Factored out
uranmaximum [27]

Answer:

a =  - 7

a =  - 1

Step-by-step explanation:

(a+4) {}^{2}  - 3 {}^{2}  \\ a {}^{2}  + 8a + 16 - 9 \\ a {}^{2}  + 8a + 7 \\ a {}^{2}  + a + 7a + 7 \\ a(a + 1) + 7(a + 1) \\ (a + 7)(a + 1) \\ a + 7 = 0 \:  \:  \:  \: or \:  \:  \:  \: a + 1 = 0 \\ a =  - 7 \:  \:  \:  \: \:  \:  \:  \:  or \:  \:  \: a =  - 1

8 0
2 years ago
Solve this quadratic equation.<br> x2 + 5x + 3 = 0
Xelga [282]

Answer:

Step-by-step explanation:

2x+5x+3=0

7x+3=0

   -3   -3

   =0  =-3

7x=-3

-3/7=-0.42857142857

x=-0.42857142857

I think it is right

3 0
2 years ago
ben owns a older american truck. The odometer shows distance travelled in miles. On a recent trip to deliver produce for his emp
expeople1 [14]

Answer:

$2,239.66

Step-by-step explanation:

To find the amount of reimbursement, convert miles to km by multiplying 1564 by 1.609 since 1 mile = 1.609 km.

He drive 1564(1.609)=2,516.476 km.

Multiply this distance by $0.89 per km.

2516.476(0.89)=$2,239.66

3 0
3 years ago
A camera has a list price of $579.99 before tax. If the sales tax rate is 7.25%, find the total cost of the camera with sales ta
dezoksy [38]

Answer:

519.99(.0825) = 42.899

519.99 + 42.899 = $562.89

Step-by-step explanation:

3 0
2 years ago
Choose the correct simplification of the expression (2x2y6z5)(5x4y5z3).
erastovalidia [21]

Answer:

The correct option is 4.

Step-by-step explanation:

The given expression is

(2x^2y^6z^5)(5x^4y^5z^3)

Simplify the given expression.

(2x^2y^6z^5)\times (5x^4y^5z^3)

(2\times 5)(x^2x^4)(y^6y^5)(z^5z^3)

10x^{2+4}y^{6+5}z^{5+3}                  [\because x^mx^n=x^{m+n}]

10x^6y^{11}z^8

Therefore correct option is 4.

8 0
3 years ago
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