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Ksju [112]
3 years ago
12

Last night, the temperature fell from 0°F to Negative 13 and one-fifth°F in4 and two-fifths hours. Alan calculated the average t

emperature change per hour.
Negative 13 and one-fifth divided by 4 and two-fifths = Negative StartFraction 66 over 5 EndFraction divided by StartFraction 22 over 5 EndFraction = Negative StartFraction 66 over 5 EndFraction (StartFraction 22 over 5 EndFraction) = Negative StartFraction 1,452 over 25 EndFraction
Alan solved the problem, but when he checked the answer by estimating, it didn’t seem right. What error did he make?
Alan converted the mixed number to the wrong improper fraction.
He did not use the correct reciprocal fraction.
He did not change the division problem to multiplication.
He added the numerators and denominators instead of multiplying.
Mathematics
2 answers:
Sever21 [200]3 years ago
7 0

Answer:

the real answer is b

Step-by-step explanation:

hope this helps:^

USPshnik [31]3 years ago
5 0
Negative 3.14
Times that by Pi which is 3.14 and then multiply by the base number and you will get the correct answer
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An 8-ounce box of Crispy Crackers costs $1.59 and a 32-ounce box costs $6.79. Which box is the better buy?
Aleksandr-060686 [28]

Answer: 8 oz

Step-by-step explanation:

Cost less per oz

3 0
3 years ago
A cross section is made by the intersection of a plane and a square pyramid at an angle either parallel or perpendicular to the
alukav5142 [94]
A cross section is the two dimensional shape that is created when a slice is made through a solid figure by an intersection of a plane and the solid body.

A square pyramid is a pyramid with a square base.

Case 1: When the plane intersects the square pyramid at an angle perpendicular to the base but not through the vertex. In this case a trapezoid is formed.

Case 2: When the plane intersects the square pyramid at an angle perpendicular to the base and through the vertex. In this case a triangle is formed.

Case 3: When the plane intersects the square pyramid at an angle parallel to the base. In this case a square is formed.

<span>Therefore, a cross section made by the intersection of a plane and a square pyramid at an angle either parallel or perpendicular to the base can be of shapes:

-square
-triangle
-trapezoid</span>
8 0
3 years ago
Read 2 more answers
Complete the passage to describe velocity vs time graphs.A velocity vs time graph is a graph that shows the relationship between
Fiesta28 [93]
1)Time is plotted on the x-axis in seconds
2)Velocity of the object is plotted on the y-axis in meters per second
4 0
3 years ago
Square root of 48841​
agasfer [191]

Answer:

The square root of 48841 is 221.

Step-by-step explanation:

If you multiply 221 by 221, then you get 48841. So the square root is 48841. Hope this helped! :D

5 0
3 years ago
Determine whether the following statement regarding the hypothesistest for two population proportions is true or false.
murzikaleks [220]

Answer:

False

Step-by-step explanation:

Let p1 be the population proportion for the first population

and p2 be the population proportion for the second population

Then

H_{0} p1  = p2

H_{a} p1 ≠ p2

Test statistic can be found usin the equation:

z=\frac{p1-p2}{\sqrt{{p*(1-p)*(\frac{1}{n1} +\frac{1}{n2}) }}} where

  • p1 is the sample population proportion for the first population
  • p2 is the sample population proportion for the second population
  • p is the pool proportion of p1 and p2
  • n1 is the sample size of the first population
  • n2 is the sample size of the second population.

As |p1-p2| gets smaller, the value of the <em>test statistic</em> gets smaller. Thus the probability of its being extreme gets smaller. This means its p-value gets higher.

As the<em> p-value</em> gets higher, the null hypothesis is less likely be rejected.

7 0
3 years ago
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