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stira [4]
3 years ago
8

Please help it’s a pic

Mathematics
2 answers:
Evgesh-ka [11]3 years ago
7 0

Answer:

58°

Step-by-step explanation:

<MQR = <XQL (vertically opposite angles)

28 + 5b = 70 - 2b

28 - 70 = -2b - 5b

-42 = -7b

-42/-7 = b

6 = b

<MQR = 28 + 5b

= 28 + 5(6)

= 28 + 30

= 58°

Tamiku [17]3 years ago
5 0

Answer:

(A)

Step-by-step explanation:

<XQL and <MQR are vertical angles, which means that their measures are equal to each other.

I used the two equations to solve for b.

[see first picture]

When B got solved, I replaced b in MQR's equation with 6 (B = 6), and I got 58, which is option A.

[see second picture]

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The total cost of $4 sharpeners and $7 folders is $30.05. If the cost of a sharpener is $a, and a folder is $2.80 more expensive
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Answer:

  a = $0.95

Step-by-step explanation:

The cost of a sharpener is 'a', and the cost of a folder is $2.80 more, so is a+2.80. The total cost of 4 sharpeners and 7 folders is ...

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7 0
3 years ago
Enunciado:Si una empresa determina que sus costos obedecen a un modelo lineal y además sabe que si produce $10$ unidades sus cos
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Responder:

y = 200x + 2000

Explicación paso a paso:

Deje que la ecuación lineal se exprese como y = mx + c

m es la pendiente

c es la intersección

Si la empresa produce $ 10 unidades, sus costos totales son $ 4000 dólares y si produce $ 15 unidades sus costos ascienden a $ 5000 dólares, entonces podemos representar esto como puntos de coordenadas;

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Conseguir la pendiente

m = 5000-4000 / 15-10

m = 1000/5

m = 200

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4000 = 200 (10) + c

4000-2000 = c

c = 2000

Sustituya m = 200 y c = 2000 en la ecuación y = mx + c

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