Ask question

Ask question

All categories

Angelina_Jolie [31]

2 years ago

15

the video game drew and jan want to buy costs $55 write an expression to show how many weeks it will take them to save enough to

buy the video game use paraentheses and brackets in your expression then evalutae the expression

1 answer:

kumpel [21]2 years ago

5 0

There isn't enough information. Does it say how much they make a week? Or so I cannot help.

You might be interested in

Its please excuse my dear aunt sally if yall know any of that (32-4)*5*(10+22)

Marina CMI [18]

Complete the brackets first and then multiply it all.
28x5x32= 4480

5 0

3 years ago

Read 2 more answers

Select the correct answer.

yuradex [85]

Answer:

A

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

50 POINTS AND BRAINLIEST

algol [13]

From the left $(x\to2^-)$ the function is clearly approaching 5, while from the right $(x\to2^+)$ it is approaching -2.

8 0

3 years ago

Which expression should you simplify to find the 90% confidence interval,

Alex787 [66]

Answer:

$0.45 - 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.287$

$0.45 + 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.613$

And we can conclude at 95% of confidence that the true proportion of interest for this case is between 0.287 and 0.613

Step-by-step explanation:

The estimated proportion of interest is $\hat p=0.45$

We need to find a critical value for the confidence interval using the normla standard distributon. For this case we have 95% of confidence, then the significance level would be given by $\alpha=1-0.95=0.05$ and $\alpha/2 =0.025$ . And the critical value is:

$z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96$

The confidence interval for the true population proportion is interest is given by this formula:

$\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$

Replacing the values provided we got:

$0.45 - 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.287$

$0.45 + 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.613$

And we can conclude at 95% of confidence that the true proportion of interest for this case is between 0.287 and 0.613

8 0

3 years ago

Triangle ABC is graphed on a coordinate grid with vertices at A (-2, -4), B (2, -4) and C (0, 2). Triangle ABC is dilated by a s

Papessa [141]

Answer:

The rule which best represents the dilation that was applied to Triangle ABC to create A’B’C’ will be:

(x, y) → (1/2x, 1/2y)

Step-by-step explanation:

Given the vertices of a triangle

A(-2, -4)

B(2, -4)

C(0, 2)

After the dilation, the vertices of an image triangle be

A' (-1, -2)

B '(1, -2)

C' (0, 1)

If we closely observe, we can notice that the image triangle vertices A'B'C' are half of the original triangle ABC.

i.e. (x, y) → (1/2x, 1/2y)

verification

A(-2, -4) → A'(-2/2, -4/2) = A'(-1, -2)

B(2, -4) → B'(2/2, -4/2) = B'(1, -2)

C(0, 2) → C'(0/2, 2/2) = C'(0, 1)

Thus, it is verified and we conclude that the rule which best represents the dilation that was applied to Triangle ABC to create A’B’C’ will be:

(x, y) → (1/2x, 1/2y)

6 0

2 years ago