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jeyben [28]
3 years ago
9

Write and algebraic expression:

Mathematics
1 answer:
Triss [41]3 years ago
6 0

Answer:

21b

Step-by-step explanation:

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If a textbook costs £7.80, how many can be bought for £101.40?
Semenov [28]

Answer:

13 textbook can buy.

Step-by-step explanation:

13 textbook can buy.

8 0
2 years ago
Read 2 more answers
Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 5 liters of natural oil for every 8 liters of
Sloan [31]

9514 1404 393

Answer:

  340

Step-by-step explanation:

The ratio of natural to synthetic is give as ...

  5 : 8

Then the ratio of natural to total would be ...

  5 : (5+8) = 5 : 13

The amount of natural oil in 884 total liters of oil will be ...

  (5/13)(884 L) = 340 L

884 liters of Petrolyn oil will contain 340 liters of natural oil.

4 0
2 years ago
Read 2 more answers
ANSWER QUICKLY!!!!!
Paul [167]

Answer:

1. The possible roots are ±1, ±2, ±3, ±6. These are the factors of the trailing constant (6) divided by the factors of the leading coefficient (1). When the leading coefficient is 1, the possible roots are the factors of the constant

2. The polynomial is easier to evaluate when it is written in Horner form:

 f(x) = ((x -4)x +1)x +6

To show that 2 is a zero, we want to find f(2):

 f(2) = ((2 -4)2 +1)2 +6 = (-4 +1)2 +6 = -6 +6 = 0

 f(2) = 0, so 2 is one of the zeros of this function

3.  Using synthetic division (attached) or polynomial long division, we can divide the given polynomial by (x-2) to find the remaining factors. This division gives (x^2 -2x -3), which can be factored as (x -3)(x +1), so the three actual roots are ...

 x = 2 (from above), x = 3, x = -1 (from our factorization)

4. In factored form, the polynomial can be written ...

 f(x) = (x +1)(x -2)(x -3)

The first factor was found from the fact that 2 was given as a zero of the function. For any zero "a", a factor of the polynomial is (x-a).

The remaining factors were found by factoring the quadratic trinomial that resulted from the division of f(x) by x-2. That trinomial is x^2 -2x -3.

There are a number of methods that can be used to factor x^2 -2x -3. Again, the rational root theorem can help. It suggests that ±1 and ±3 are possible roots.

4 0
2 years ago
Membership for a robotics club is $15 per month plus a one-time registration fee of $35. Write an equation in slope-intercept fo
Gemiola [76]
Y = 15x + 35

15 dollars per month, and 35 initial fee
6 0
3 years ago
Find the distance from point P to RQ
Wewaii [24]

Answer:

option A : about 2.8 units

Step-by-step explanation:

To find the distance from P to RQ , Find the distance from ( 1 , 1) to (3 , 3).

 Distance = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}

                 = \sqrt{(3-1)^2 + (3-1)^2}\\\\= \sqrt{2^2 + 2^2 }\\\\= \sqrt{4 + 4 }\\\\= \sqrt{8}\\\\=2\sqrt{2}

                 = 2.83 units

4 0
3 years ago
Read 2 more answers
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