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Katen [24]
3 years ago
5

04.Um rojão acoplado a fogos de artifício é lançado de um penhasco, 25 metros acima de um lago. O rojão cairá no lago após explo

dir ao atingir sua altura máxima. A altura h do rojão, em metros, em relação à superfície do lago é dada por h(t) = –5t2 + 20t + 25, em que t é o tempo, em segundos, a partir do instante de lançamento. Considerando essas informações, pode-se afirmar que o rojão atingirá o lago a) 5 segundos após o lançamento. B) 2 segundos após o lançamento. C) 1 segundos após o lançamento. D) 1 segundos antes do lançamento. E) 4 segundos após o lançamento.
Mathematics
1 answer:
In-s [12.5K]3 years ago
7 0

Answer:

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Step-by-step explanation:

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The model shown was used to find the product of two fractions: A rectangle divided into nine columns of equal size and 4 rows of
Valentin [98]

The equation that represents the array (rectangles and area) multiplication model that sows two grey shaded columns of length one ninth each and three rows with dots of width one fourth each is option <em>a</em>

a) The equation with fractions two ninths times three fourths is equal to six thirty sixths

\dfrac{2}{9} \times \dfrac{3}{4} = \dfrac{6}{36}

<h3>What is an array (area) multiplication model?</h3>

An array representation of a multiplication is a rectangular visual order of positioning of rows and columns that indicates the terms of a multiplication equation.

Please find attached the area model to multiply the fractions

The terms of the equation represented by the model are indicated by the two columns of length one ninth each shaded grey and the three rows of width one fourth each covered with dots, such that the equation can be presented as follows;

\left(\dfrac{1}{9} +\dfrac{1}{9}\right) \times \left(\dfrac{1}{4} +\dfrac{1}{4} + \dfrac{1}{4} \right) = \dfrac{2}{9} \times \dfrac{3}{4} =\dfrac{6}{36}

The equation that the model represents is therefore;

  • The equation with fractions two ninths times three fourths is equal to six thirty sixths

Learn more about multiplication models here:

brainly.com/question/24586779

#SPJ1

8 0
1 year ago
Melinda bought 6 bowls for $13.20. what was the unit rate in dollars
never [62]
<u>6
</u>13.20
Divide by 6
<u>1
</u>2.2
6 0
3 years ago
Check all that apply
lozanna [386]

Answer:

D. be congruent

Step-by-step explanation:

vertical angles are angles that are across from each other on intersecting lines and they are always congruent

3 0
3 years ago
forty eight students were divided into two groups for a field trip. The first group is three times as large as the second group
NISA [10]
I believe the first group would have 36 and the second group would have 12
4 0
3 years ago
Evaluate 3^2 + (7 − 2) ⋅ 4 − 6 over 3
goldfiish [28.3K]

Answer:

7.7

Step-by-step explanation:

we basically follow the BEDMAS rule

1st we workout the bracket (7-2)=5

2nd the exponent 3^2=9

3rd the multiplication (7-2) . 4 = 5 . 4 = 20

4th addition 9+20=29

5th step is subtraction 29-6=23

the final step is dividing 23 by 3, which will become 7.7

6 0
2 years ago
Read 2 more answers
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