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Maksim231197 [3]
3 years ago
5

Timothy bought concrete mix for several projects. He used 3.5 bags of concrete mix for a new set of stairs and 2.25 bags of conc

rete mix for a garden wall. Timothy mixed 345 pounds of concrete in all. Answer parts a and b
Mathematics
2 answers:
Fiesta28 [93]3 years ago
8 0

Answer: 3.5y + 2.25y =345

Step-by-step explanation:

lapo4ka [179]3 years ago
4 0

Answer:

Step-by-step explanation:

44

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In a random sample of 62 professional actors, it was found that 40 were extroverts. Please find the point estimate, 95% confiden
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The point Estimate is 0.645 , the confidence interval is (0.525 ,0.764).

<h3>What is Point Estimate ?</h3>

The point estimate is the proportion of success in the sample.

From the data given

p = 40/62

p = 0.645

The point Estimate is 0.645

(b) Confidence interval for true proportion is

\rm {p -Z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}}  , p +Z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}

For 95 % Z = 1.96

p =0.645

1-p = 0.355

putting the values

\rm {0.645 -1.96 \sqrt{\dfrac{0.645\times0.355}{62}}  , {0.645 +1.96 \sqrt{\dfrac{0.645\times0.355}{62}} \\

(0.525 , 0.764)

Lower Limit = 0.525

Upper Limit = 0.764

To know more about Point Estimate

brainly.com/question/17514579

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3 0
2 years ago
Pablo wants to pour 82.69 grams of salt into a container. So far, he has poured 38.4 grams. How much more salt should Pablo pour
Hunter-Best [27]

Answer:

so far he has poured 38.4 grams

Step-by-step explanation:

7 0
3 years ago
How can graphing an inequality help to solve it
erma4kov [3.2K]

Answer:

It helps you see the equation in "picture" form.

Step-by-step explanation:

When you see the inequality in a graph form, most people can benefit from seeing a different version of the same problem.

4 0
3 years ago
graph the solution to the following system of inequalities y&lt;-2x+7, y greater than or equal to 2x - 3 ​
Alex777 [14]

Answer:

See attached diagram

Step-by-step explanation:

Graph the solution of the inequality y First, draw the dotted line y=-2x+7 (dotted because the sign of the inequality is <). Then determine wich part of the coordinate plane should be shaded. Since the origin's coordinates satisfy the inequality, then this point should belong to the region (red part on the diagram).

Graph the solution of the inequality y\ge 2x-3. First, draw the solid line y=2x-3 (solid because the sign of the inequality is ≥). Then determine wich part of the coordinate plane should be shaded. Since the origin's coordinates satisfy the inequality, then this point should belong to the region (blue part on the diagram).

The intersection of both regions is the solution of the system of two inequalities.

6 0
3 years ago
If a basketball was dropped 32 feet from a second floor of a home, how far would it rebound if it bounciness was
valentina_108 [34]

Answer:

23.68

Step-by-step explanation:

74% = 74/100

\frac{74}{100} · \frac{32}{1} = 23.68

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3 years ago
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