MATHEMATICS MIDDLE SCHOOL

Mrs. Rowan allotted 30 minutes at the beginning of class for her students to complete an exam. The last student took 42 minutes to complete the exam. What is Mrs. Rowan's percent error?

Answers

Answer 1

Answer:

Using percentage concepts, it is found that Mrs. Rowan percent error is of 40%.

The percent error is given by the extra time afforded multiplied by 100% and divided by the allotted time.

In this problem:

Allotted time of 30 minutes.
The last student took 42 minutes to complete the exam, thus the extra time afforded was of 12 minutes.

The percent error is:

$P = (12)/(30) * 100\% = 0.4 * 100\% = 40\%$

The percent error is of 40%.

A similar problem is given at brainly.com/question/16903296

Answer 2

Answer:

Step-by-step explanation:

Percent error = |actual − theoretical| / actual × 100%

|42 − 30| / 42 × 100% = 28.6%

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If BC=6.7, CD=6.2, and AD=13.3, find AB to the nearest tenth

Answers

Answer:

The answer is 14.4 units.(option A)

Step-by-step explanation:

Angles BAC and CAD are equal.

We can solve this by using the proportional relation.

$(AB)/(BC) =(AD)/(CD)$

Let AB be = x

So, $(x)/(BC) =(AD)/(CD)$

$(x)/(6.7) =(13.3)/(6.2)$

$(x)/(6.7) =2.145$

$x=6.7*2.145$ = 14.37 units

And rounding to nearest tenth, we get 14.4 units.

Answer:

14.4

Step-by-step explanation:

AB / BC = AD/CD

AB/6.7 = 13.3 / 6.2

AB = 13.3 * 6.7 / 6.2

AB = 14.4

Help?? Please...I struggling

Answers

Answer:

Step-by-step explanation:

15 = 1*3*5

64 = 1*8*8 = 1*2*2*2*2*2*2

15 and 64 have only "1" that presents in both 15 and 64.

So, GCF of 15 and 64 is 1.

I need this explained

Answers

$\text{Hey there!}$

$\text7x}^2\text{- 32x - 60}$

$\text{The answer is: (7x + 10)(x - 6)}$

$\text{Because if you follow the step to the answer (first you have to distribute}$ $\text{then combine the like terms after distributing) after all of that you SHOULD}$ $\text{get the equation back!}$

$\text{Distribute}\downarrow\n\n\text{7x(x)=7x}^2\n \text{7(-6x)= -42}\n\text{10(x)= 10x}\n\text{10(-6)= -60}$

$\text{Combine your like terms (terms that has the almost the same thing)}\downarrow$

$\text{-42x + 10x = -32x}$

$\text{The other terms stays the same because they DON'T have like terms}$

$\text{Original problem: 7x}^2\text{- 32x -60}$

$\boxed{\boxed{\bf{Answer: (7x+10(x -6))}}}\checkmark$

$\text{Good luck on your assignment and enjoy your day!}$

~ $\frak{LoveYourselfFirst:)}$

Sam and lou need a total of 1 foot of wire for a science project.sam wire is 8 out of 2 n lou is 7 out of 8.Do they have enough.

Answers

≈ 12 in = 1 ft. ≈
8/2 in = 4 in
7/8 in = 7/8 in
4 + 7/8 = 4 7/8
No. They do not have enough.

How about you get a ruler and add all there inches up and see if you get 1 foot✔️✔️✔️

Find 1/9 as many as 3 divided by 5

Answers

1/9 times 3/1 = 1/3. Now divide 1/3 by 5 or multiply by 1/5 and you get 1/15. There's your answer

(2x^2 -x+5)v+ (3x^2 -3x -2)

Answers

5x^2 - 4x +3
explanation is attached
Enjoy !

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I need help with this problem and if you can help me with the other ones like this that would be great thx

Please help me idk this