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Paraphin [41]
2 years ago
14

Can someone help me please!

Mathematics
1 answer:
erica [24]2 years ago
5 0

9514 1404 393

Answer:

  B, C, E

Step-by-step explanation:

Distributing the minus sign in the given expression results in ...

  6x +1 -3x -(-1)

  6x +1 -3 +1 . . . . simplify

The two expressions that show the constant terms as +1 - 1 are erroneous. The two constant terms are +1 -(-1) or +1 +1.

The correct expressions are the 2nd, 3rd, and 5th ones (b, c, e).

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A research organization reported that 41 percent of adults who were asked to describe their day responded that they were having
Neporo4naja [7]

Answer:

B) No, because the p-value is greater than any reasonable significance level

Step-by-step explanation:

H-null: p = 0.41

H-alt: p =/= 0.41

1 proportion Z test

On a calculator: stat + tests + 5

   p: .41

   x: 245

   n: 600

   prop: =/= p

This gives a p-value = .934

(standard significance level is .05, so this p-value is much larger)

fail to reject H-null

3 0
3 years ago
Al precio de p dólares por unidad, se venden x unidades de cierto artículo al mes en el mercado con p=50-0.5x ¿Cuántas unidades
Ray Of Light [21]

Answer:

Se debe vender un mínimo mensual de 40 artículos para tener un ingreso mínimo de 1.200 dólares.

Step-by-step explanation:

De acuerdo con el enunciado, x es la cantidad mínima de artículos a un precio de p. Además, los ingresos totales deben ser de un mínimo de 1200. En consecuencia, tenemos el siguiente sistema de ecuaciones:

x \cdot p = 1200 (1)

p = 50-0.5\cdot x (2)

Aplicando (2) en (1), tenemos la siguiente ecuación polinómica:

x\cdot (50-0.5\cdot x) = 1200

50\cdot x -0.5\cdot x^{2} = 1200

0.5\cdot x^{2}-50\cdot x +1200 = 0 (3)

Por la Fórmula de la Cuadrática tenemos las raíces del polinomio:

x_{1} = 60, x_{2} = 40

De acuerdo con el resultado anterior, se debe vender un mínimo mensual de 40 artículos para tener un ingreso mínimo de 1.200 dólares.

3 0
3 years ago
Michael went to dinner with his friend. Their total was $25.70. If they left a 20% tip, what was their total
lana66690 [7]

Answer: <em>$20.56</em>

Step-by-step explanation:

<em>Let's take our given total and use this equation</em>

<em>25.70(n)</em>

<em>n will equal 0.80 in this case, as they left a 20% tip so we need to find out what 80% of 25.70 is first</em>

<em />25.70(0.80)<em />

<em>$20.56 is the total without the tip!</em>

4 0
3 years ago
I need help ASAP please ant thank you <br> what is x
Marizza181 [45]

Answer:

(3x-17)°+(x+40)°+(2x-5)°=180°[sum of angle of triangle]

6x°+18°=180°

6x°=180°-18°

x°=162°÷6°

x°=27°

Again,

=3x-17. 2x-5. x+40°

=3×27-17. =2×27-5. =27+40

=64°. =49°. =67°

6 0
2 years ago
Help me please don’t need an explanation just a quick answer
Vikki [24]
Cfxgxhcgxjcbchcjchxjfhx
5 0
3 years ago
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