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aksik [14]
2 years ago
10

Which description is correct for the polynomial 4x² + 3x +5?

Mathematics
1 answer:
antoniya [11.8K]2 years ago
5 0

Answer:

A. Quadratic trinomial

Step-by-step explanation:

You can easily eliminate B and C because trinomial means there are three terms. B has monomial (one term) and C has binomial (two terms).

Now you have A and D. D is cubic which means the first term (4x²) would have to be cubed (4x³). Quadratic means it is squared.

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The length of a rectangular plot of land is 10 yards more than its width if the area of the land is 600 yd.² find the dimensions
Andrews [41]

Answer:

The dimension of the plot is 30 yd by 20 yd

Step-by-step explanation:

Given;

Area = 600 yd^2

Length = width + 10

l = w + 10 ......1

Area of a rectangular plot is;

Area A = length × width

A = l × w

Substituting equation 1;

A = (w+10) × w

A = w^2 + 10w

600 = w^2 + 10w

w^2 +10w -600 = 0

Solving the quadratic equation;

w = -30 or 20

cannot be negative

w = 20 yd

l = w+10 = 20+10 = 30yd

The dimension of the plot is 30 yd by 20 yd

6 0
2 years ago
ANSWER IT PLZ! Evaluate the expression 4² + 6 · 5² - 3³ ÷ 3² = ?
Ulleksa [173]

Answer:

= (6×25)

= 150 - (27÷9)

= 150 - 3

= 147

7 0
3 years ago
Read 2 more answers
If Y varies directly as X and Y= 79 when X= 49, Find Y if X = 9
ryzh [129]

Answer:

y = 14.5

Step-by-step explanation:

given that y varies directly as x

mathematically,

y ∝ x

y = kx .............................................. where k is the constant of proportionality.

k = y /x

given that

y = 79

x = 49

k = 79/49

k = 1.61

to find y when x = 9

from

y = kx

y = 1.61 × 9

y = 14.5

therefore the value of y when x = 9 in ths variation is evaluated to be equals to 14.5

7 0
3 years ago
Carlos bought 70 feet of rope for $19.60. He needs 30 more feet. If the unit price is the same, how
Maru [420]

Answer:

8.40

Step-by-step explanation:

7 0
3 years ago
Solve: (-5) + (-18) <br><br>A -23<br><br>B- 13<br><br>C 13<br><br>D 23​
Lina20 [59]
The answer would be -23
8 0
2 years ago
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