2 years ago

Sea f(x)=x²+x+1

Mathematics

1 answer:

Mkey [24]2 years ago

6 0

Answer:

Step-by-step explanation:

la respuesta es una imagen de arriba

mi explicación también está en la imagen de arriba

llama mi atención si no entiendes

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Find the error and then find the correct answer.

qaws [65]

Answer:

w = 3

Step-by-step explanation:

The correct one is given below:

- 5 - 4w = - 17

+5 + 5

- 4w = -12

- 4 -4

w = 3

The error is 4w instead of - 4w

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2 years ago

Write in numbers: seven times the quotient of 8 and 5

miv72 [106K]

Answer:

7(8×5)

7(40)

7×40

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2 years ago

A research company desires to know the mean consumption of meat per week among people over age 40. A sample of 610 people over a

Papessa [141]

Answer: $(3.0,\ 3.2)$

Step-by-step explanation:

Confidence interval for population mean is given by :-

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$ (1)

, where $\overline{x}$ = Sample mean

$z_{\alpha/2}$ = Critical z-value

$\sigma$ = Population standard deviation.

n= Sample size.

As per given , we have

n= 610

$\sigma=1.1$

$\overline{x}=3.1$

Significance level for 85% confidence : $\alpha=1-0.85=0.15$

By z-table critical two tailed z-value : $z_{\alpha/2}=z_{0.075}=1.44$

Put all values in (1) , we get

$3.1\pm 1.44\dfrac{1.1}{\sqrt{610}}$

$3.1\pm 1.44\dfrac{1.1}{24.698}$

$3.1\pm 0.064$

$=(3.1-0.064,\ 3.1+0.064)=(3.036,\ 3.164)\approx(3.0,\ 3.2)$

Hence, the 85% confidence interval for the mean consumption of meat among people over age 40. = $(3.0,\ 3.2)$

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3 years ago

Stacy and Travis are rock climbing. Stacy’s rope is 4 feet shorter the 3 times the length of Travis rope. Stacy’s rope is 23 fee

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23×3=69
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travis's rope is 65ft long.

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3 years ago

Match the system of linear equations, to its graph.

kykrilka [37]

Answer:

The answer is the second graph, Option 2

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2 years ago