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ioda
3 years ago
11

4) Se a = 7, b = -3 e c =2, a equação do 2º grau que corresponde a esses coeficientes é: 2x(x+1) + 5x² - 5x = - 2 2x² + 7x - 5 =

0 3x² -7 = 0 4(x² + 7) - 3x - 7 = 0 Nenhuma das alternativas acima.
Mathematics
1 answer:
maxonik [38]3 years ago
3 0

Answer:

hiduddseir rut the. rwi. ei ej ei rfcua di

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A pair of basketball shoes was originally priced at $80, but was marked up 47.5%. What was the retail
Lelu [443]
47.5% in decimal form is 0.475.

Since the price was increased, we add 1 to 0.475 to get 1.475.

80 * 1.475 = 118

Another way to solve this is to multiply 80 by 0.475, which is 38, then add it to 80.

The retail price of the shoes is $118.
6 0
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(Please help!)<br><br> Divide:<br> (4x² +33x+37) = (x+7)<br><br> Quotient:<br><br> Remainder:
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Answer:

2

Step-by-step explanation:

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5 0
2 years ago
Which trigonometric ratios are correct for triangle DEF?
ziro4ka [17]
Sin(D) = 24/25
tan(D) = 24/7
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3 0
3 years ago
We can calculate the depth ddd of snow, in centimeters, that accumulates in Harper's yard during the first hhh hours of a snowst
inna [77]

Answer:

0.2 hours

Step-by-step explanation:

The depth, d of snow (in cm) that accumulates in Harper's yard during the first h hours of a snowstorm can be calculated using the equation:

d=5h

When d=1cm, we want to determine the value of h.

1=5h

h=1/5=0.2

Therefore, it takes 0.2 hours for 1 centimeter of snow to accumulate in Harper's yard.

3 0
3 years ago
The sum of the interior angles of a polygon with n sides is 1980°. Find n.
natka813 [3]

Answer:

n = 13

Step-by-step explanation:

The sum of the measures of the interior angles of an n-sided polygon is

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Set (n - 2)180 equal to 1980 and solve for n.

(n - 2)180 = 1980

Divide both sides by 180.

n - 2 = 11

Add 2 to both sides.

n = 13

3 0
3 years ago
Read 2 more answers
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