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3 years ago

Carpenters are installing hinges. They have 371 screws. Each hinge needs 3 screws. How many hinges can they install?

Mathematics

1 answer:

harkovskaia [24]3 years ago

6 0

Answer:

Carpenters can install about 123 hinges.

Step-by-step explanation:

Since each hinge requires 3 screws. Divide 371 by 3.

= 123.666667

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In a multiple choice examination of 20 questions, four marks are given for each correct answers and one mark is deducted for eac

finlep [7]

Answer:

Total Mark = 5c - a

Step-by-step explanation:

Total Mark = 4c - (a - c) = 5c - a

Marks for correct questions = 4c

Marks deducted for incorrect questions = a - c

8 0

3 years ago

Helppp! Is Figure A’B’C’D’ a reflection of Figure ABCD? Explain. *

Korolek [52]

Yes. It would be a reflection over the line.

8 0

3 years ago

a quadratic equation has a discriminant of 12. which could be the equation? a.0 = –x2 8x 2 b.0 = 2x2 6x 3 c.0 = –x2 4x 1 d.0 = 4

Norma-Jean [14]

Answer:

Option b which is $2x^2+6x+3=0$

Step-by-step explanation:

We have been given the discriminant 12

We have to choose the equation which will satisfy the given discriminant.

We will consider all the given equation one by one

First we will take option a which is $-x^2+8x+2=0$

Discriminant from the equation we will find by the formula

$D=b^2-4ac$

Here, a=-1,b=8 and c=2 on substituting the values we will get

$D=8^2-4(-1)(2)=72$

Hence, option a is incorrect.

Now, we will consider option b which is $2x^2+6x+3=0$

Here, a=2,b=6 and c=3 on substituting the values we get

$D=(6)^2-4(2)(3)=12$

Hence, option b is correct

Therefore, option b is the required answer.

8 0

3 years ago

Read 2 more answers

A cyclist estimates that he will bike 80 miles this week. He actually bikes 75.5 miles. What is the percent error of the cyclist

maw [93]

Answer:

<em>The percent error of the cyclist's estimate is 5.63%</em>

Step-by-step explanation:

<u>Percentages</u>

The cyclist estimates he will bike 80 miles this week, but he really bikes 75.5 miles.

The error of his estimate in miles can be calculated as the difference between his estimate and the real outcome:

Error = 80 miles - 75.5 miles = 4.5 miles

To calculate the error as a percent, we divide that quantity by the original estimate and multiply by 100%:

Error% = 4.5 / 80 * 100 = 5.625%

Rounding to the nearest hundredth:

The percent error of the cyclist's estimate is 5.63%

5 0

3 years ago

I bought 7 boxes of shotgun shells for $71 not counting sales tax. One type of shell costs $5 per box and the other costs $14 pe

IRINA_888 [86]

Answer:

No Becky!

Step-by-step explanation:

ugh

7 0

3 years ago