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aliina [53]
3 years ago
11

Which expression is equivalent to this polynomial? 6x2 + 10x − 56=

Mathematics
2 answers:
Semmy [17]3 years ago
7 0

Step-by-step explanation:

A 4x - 16 - 6x2 - 6x + 40

Solving like terms

-6x2 - 2x + 24

B 3x2 + 5x - 28 + 3x2 - 5x - 28

Solving like terms

6x2 - 64

C 4x - 16 + 6x2 + 6x - 40

Solving like terms

6x2 + 10x - 56

Option C is the correct answer

hammer [34]3 years ago
4 0
2nd one maybe I’m not to sure srry
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Find the value for the following determinant.<br><br> 5<br> -5<br> -11
s2008m [1.1K]

Answer:

i think -11

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Factor completely y^2-xy-56x^2
olga2289 [7]
You can factor this out by thinking of the factors of 56 that have a sum of -1. 7 and 8 are factors of 56 and to get a sum of -1, 8 should be negative. 7 + -8 = -1

So y^{2} - xy -  56x^{2} factored out is (y+7x)(y-8x)

We can check this using FOIL
F = (y)(y) = y^{2}
O = (y)(-8x) = -8xy
I = (7x)(y) = 7xy 
L = (7x)(-8x) = -56x^{2}
y^{2} - 8xy + 7xy - 56x^{2} Combine like terms
y^{2} - xy - 56x^{2}
3 0
3 years ago
Read 2 more answers
A clothes shop has some special offers.
castortr0y [4]

Answer:

The cost of 5 jumpers will be £ 58.40 (one more can be taken for free), the cost of 4 T shirts will be £ 9.60, and the total cost of the purchase will be £ 68.

Step-by-step explanation:

Since a clothes shop has some special offers, for which T-shirts are buy one get one free and jumpers are 3 for 2, and the normal price of a T-shirt is £ 4.80 and the normal price of a jumper is £ 14.60, to determine how much does it cost to get 5 jumpers and 4 T-shirts using this offer as appropriate, the following calculation must be performed:

4 T shirts = 2 + 2

4.80 x 2 = 9.60

5 jumpers = 2 (+1) + 2

4 x 14.60 = 58.40

Therefore, the cost of 5 jumpers will be £ 58.40 (one more can be taken for free), the cost of 4 T shirts will be £ 9.60, and the total cost of the purchase will be £ 68.

6 0
2 years ago
Help please i need help asap
hram777 [196]
What do you need help with? you have nothing here to answer

3 0
3 years ago
If you give correct answer with the Explanation I mark you brainliest answer and give 5 stars
Sedaia [141]

Answer:

x  = +4√5, x = -4√5

Step-by-step explanation:

Given:

x² - 80

Find:

Zeroes

Computation:

x² - 80

x² - 80 =  0

x² = 80

x = √80

x = ±4√5

x  = +4√5, x = -4√5

7 0
2 years ago
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