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4 years ago

Evaluate the following expression. 10 + 2 ÷ 2=__________

Mathematics

1 answer:

Triss [41]4 years ago

7 0

Answer:

Step-by-step explanation:

order of operations, divide first then add

2/2 is 1 +10 is 11

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Each day Diego's mother drives to her office in Baltimore. The driving distance from home to Baltimore, Maryland is 7 miles. On

Sidana [21]

Answer:

Step-by-step explanation:

(7+8)*3

6 0

3 years ago

PLZ HELP ME! I WILL MAKE YOU BRAINLIEST! Xian and his cousin Kai both collect stamps. Xian has 60 stamps, and Kai has 76 stamps.

zvonat [6]

Answer: After 4 months they will have the same number of Stamps

Xian and Kai will have 124 stamps each one.

Step-by-step explanation:

60+16x = 76+12x (Subtract 12 from both sides)

-12 -12

60+4x = 76 (Subtract 60 from both sides)

-60 -60

4x/4x = 16/4x (Divide 16 by 4)

X = 4

3 0

3 years ago

Need answers for 70-75

adoni [48]

Answer:

70. 0

71. -54

72. 12

73. 86

74. 59

Step-by-step explanation:

To evaluate an expression, substitute specific values for the variables and simplify using Order of Operations.

70. c-3d becomes

$(1)-3(\frac{1}{3}) = 1-(\frac{3}{3}) = 1-1 = 0$

71. $x+x^3-4x^4$ becomes

$2+2^3-4(2)^4 = 2+8-4(16) = 2+8-64=10-64=-54$

72. $5a+3a^2$ becomes

$5(-3)+3(-3)^2 = -15 +3(9) = -15 + 27 = 12$

73. $F=\frac{9}{5}C+32$ becomes

$F=\frac{9}{5}(30)+32=\frac{270}{5}+32 = 54+32 = 86$

74. $F=\frac{9}{5}C+32$ becomes

$F=\frac{9}{5}(15)+32=\frac{135}{5}+32 = 27+32 = 59$

8 0

3 years ago

Una persona camina 7 kilómetros hacia el norte, después 3 kilómetros hacia el este y, luego, 3 kilómetros hacia el sur. ¿A qué d

qaws [65]

Answer:

La persona está a 5 kilómetros con respecto al punto de partida.

Step-by-step explanation:

Considérese que la dirección norte coincide con el semieje +y y que la dirección este coincide con el semieje +x. A continuación, obtenemos las formas vectoriales equivalentes de cada afirmación:

(i) Una persona camina 7 kilómetros hacia el norte:

$\vec r_{1} = 7\,\hat{j}\,[km]$

(ii) Después 3 kilómetros hacia el este:

$\vec r_{2} = 3\,\hat{i}\,[km]$

(iii) Y luego, 3 kilómetros hacia el sur:

$\vec r_{3} = -3\,\hat{j}\,[km]$

El vector resultante de desplazamiento se construye a partir de la siguiente suma de vectores:

$\vec R = \vec r_{1}+\vec r_{2} + \vec r_{3}$ (1)

$\vec R = 3\,\hat{i} + 4\,\hat{j}\,[km]$

Asumiendo que la distancia coincide con el desplazamiento resultante, calculamos la distancia con respecto al punto de partida mediante el Teorema de Pitágoras:

$\|\vec R\| = \sqrt{3^{2}+4^{2}}$