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4 years ago

What two numbers add to equal -11 and multiply to equal 28?

2 answers:

8 0

The answer for first is -4 and -7 (-4 + -7) = 11 , -4 x -7 = 28

The answer to the second is -17 and -3 (-17+-3) = 20, -17 x -3 = 51

The answer to the third is -9 and 4 ( -9 + 4) = -5 , -9 x 4 = -36

The answer is obtained by hit and trial method and there are many other algebraic ways to solve this. Since it was a bit easy one, i thought to apply the hit and trial method.

ss7ja [257]4 years ago

4 0

-4 + -7 = -11 4 * 7 = 28
-17 + -3 = -20 17 * 3 = 51
4 + -9 = - 5 4 * -9 = 36

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Transversal t cuts parallel lines rand s. Which angles must be congruent to 22?

Nesterboy [21]

The answer is A 3,6,7

5 0

3 years ago

Find the missing term (x^12)^5 x (x^-2)^9 x what =(x^40)^5

Annette [7]

Answer:

$x^{158}$

Step-by-step explanation:

We are given,

$(x^{12} )^{5} \times (x^{-2} )^{9} \times y = (x^{40} )^{5}$ .

It is required to find the value of y.

Now, on simplifying above equation, we get,

$x^{60} \times x^{-18} \times y = x^{200}$

i.e. $x^{42} \times y = x^{200}$

i.e. $y = x^{200} \times x^{-42}$

i.e. $y = x^{158}$

Hence, the missing term is $x^{158}$ .

3 0

3 years ago

Read 2 more answers

Sodium - 24 has a hourly decay rate of 5%

allsm [11]

Answer:

The amount of sodium- 24 remain after 90 hours of decay is 8.90 gram

Step-by-step explanation:

Given as :

The amount of sodium-24 = 900 gram

The decay rate of sodium is 5 %

The time period for its decay = 90 hours

$Final value of sodium -24 = initial value \times (1 - \frac{Rate}{100})^{Time}$

Or, $Final value of sodium -24 = 900 gram \times (1 - \frac{5}{100})^{90}$

Or, Final value of sodium -24 = 900 g × $(0.95)^{90}$

Or, Final value of sodium -24 = 900 g × $(9.88)^{-3}$

∴ Final value of sodium -24 = 8.899 gram

Hence The amount of sodium- 24 remain after 90 hours of decay is 8.90 gram Answer

5 0

3 years ago

A shoe dealer purchased net Birr 8,000 worth of shoes from a shoe company.A Find the amount it is to pay the company including V

Yanka [14]

Answer:

A) Total amount to be paid = Birr 8,560

B) Amount of VAT liable to the dealer = Birr 520

Step-by-step explanation:

The tax on bought commodity and the tax on sold commodity isn't provided but in some places, these values are 7% and 9% respectively. So, these are the values that will be used for this question.

Note that these values vary from country to country and the value missing from this question will not change how the question is solved; the question will still be solved in a similar manner, only the parameters will vary.

A) The dealer bought Birr 8000 at 7% tax.

Total amount to be paid = cost price (1 + r%)

r = 7% = 0.07

Total amount to be paid = 8000 × 1.07 = Birr 8,560

B) To find the VAT, it is the difference between the tax paid when the good was bought and the tax put on it after it was sold.

Tax paid when the shoes were bought = 7% of cost price = 7% × 8,000 = Birr 560

Tax paid when the shoes were sold = 9% of selling price = 9% × 12,000 = Birr 1,080

VAT = tax recovered on sale - Tax paid on purchase

VAT = 1080 - 560 = Birr 520

Hope this Helps!!!

5 0

3 years ago

Fraction question...pls help out!!!

pentagon [3]

The answer is D because, as decimals, 4 1/3 would be 4.33(a repeating decimal) and 4 3/5 would be 4.6, and 4.4 is between those two numbers. I hope this helps.

8 0

3 years ago

Read 2 more answers