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3 years ago

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

Mathematics

1 answer:

antoniya [11.8K]3 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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Mariulka [41]

Answer:

7.7

Step-by-step explanation:

square root 59 and it's 7.681, round to tenth to get 7.7

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2 years ago

A scale drawing of a kitchen is shown below. The scale is 1 : 20.

Arada [10]

Answer:

0.138889

Step-by-step explanation:

formula is to divide by 144

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2 years ago

Read 2 more answers

Is the mix number of 17/3

Licemer1 [7]

This fraction $\frac{17}{3}$ , is not a mixed fraction. $5 \frac{2}{3}$ is a mixed fraction.

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3 years ago

Read 2 more answers

If A pizza shop sells pizzas that are 10 inches (in diameter) or larger. A 10-inch cheese pizza costs $8. Each additional inch c

nydimaria [60]

8 + 1.5(10-d) + .75t = Total

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2 years ago

Una compañía suministra electricidad. Cobra $100 mensuales fijos más 15 centavos por kilowatt hora. En los primeros 400 kilowatt

sweet [91]

Answer:

La función resultante es una función a trozos:

$C_{T}(x) = \left\{\begin{array}{cc}100+0.15\cdot x,\,0\le x \le 400\\112+0.12\cdot x,\,x> 400\\\end{array}$

Step-by-step explanation:

El coste total de la electricidad suministrada ( $C_{T}$ ), medida en pesos, es la suma del coste fijo ( $C_{F}$ ) y el coste variable ( $C_{V}$ ), medidas en pesos.

$C_{T} = C_{F}+C_{V}$ (1)

Ahora, tenemos que el coste fijo es $ 100 mensuales, así:

$C_{F} = \$ \,100$ (2)

Y el coste variable considera que se cobra 15 centavos por kilowatt-hora para los primeros 400 kilowatts-hora y 12 centavos por kilowatt-hora para cada kilowatt-hora que pase de 400 kilowatts-hora en el mes:

(i) Menos o igual que 400 kilowatts-hora:

$C_{V} = 0.15\cdot x$ (3)

Donde $x$ es la electricidad suministrada en kilowatts-hora.

(ii) Mayor que 400 kilowatts-hora:

$C_{V} = 0.15\cdot (400)+0.12\cdot (x-400)$

$C_{V} = 12+0.12\cdot x$

La función resultante es una función a trozos:

$C_{T}(x) = \left\{\begin{array}{cc}100+0.15\cdot x,\,0\le x \le 400\\112+0.12\cdot x,\,x> 400\\\end{array}$

3 0

3 years ago