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4 years ago

130% of what number is 20.8

Mathematics

2 answers:

BartSMP [9]4 years ago

5 0

Answer:

Step-by-step explanation:

The equation would be 130% x N = 20.8

To solve you would have to switch the equation around and to do that you would divide. 130% is the same as 1.30 or 1.3

20.8 ÷ 1.3 = 16

N = 16

Hope that helps and have a great day!

Gemiola [76]4 years ago

3 0

Answer 16

Step-by-step explanation:

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bearhunter [10]

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Step-by-step explanation:

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3 years ago

Use the real zeros to factor f x^4 plus 10^3 minus 20x^2 minus 90x plus 99

Furkat [3]

Answer:

f(x) = (x + 11) (x + 3) (x − 1) (x − 3)

Step-by-step explanation:

f(x) = x⁴ + 10x³ − 20x² − 90x + 99

f(x) is a fourth order polynomial, so it has 4 roots. Use rational root theorem to find possible rational roots.

±99, ±11, ±9, ±3, ±1

By trial and error, the zeros are -11, -3, 1, and 3.

f(x) = (x + 11) (x + 3) (x − 1) (x − 3)

7 0

3 years ago

-1/225x^2+2/3x what is the vertex of this quadratic function?

Julli [10]

$\bf \textit{vertex of a parabola}\\ \quad \\\\

\begin{array}{lccclll}
y=&-\frac{1}{225}x^2&+\frac{2}{3}x\\\\
y=&-\frac{1}{225}x^2&+\frac{2}{3}x&+0\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}\qquad 
\left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)$

6 0

3 years ago

Escribe una ecuación que represente la tabla. por favor respondan ^^

jarptica [38.1K]

Un ecuacion es y = 12 + x.

6 0

3 years ago

laura quiere cubrir con papel china una puesta como la que se muestran el dibujo cuánto centímetros cuadrados tendrá que cubrir

TEA [102]

Answer:

El área a cubrir es de 4800 cm^2.

Step-by-step explanation:

La pregunta está incompleta:

Laura quiere cubrir con papel de china una puerta como la que se muestra en el dibujo cuánto es centímetros cuadrados. Las medidas son 80 cm de largo y 60 cm de ancho.

Tenemos que calcular el área que representa la puerta, cuyos lados son 80 cm y 60 cm.

El área A se calcula multiplicando ambos lados:

$A=80\,cm\cdot60\,cm=4800\,cm^2$

7 0

3 years ago