All categories

3 years ago

Annie estimates that the height of a bookcase is 78.25 in. The actual height is 75.50 in.

Mathematics

2 answers:

ki77a [65]3 years ago

4 0

Answer: uhm your answer would be 3.6 sorry if this is to late :D

Step-by-step explanation:

tankabanditka [31]3 years ago

3 0

Answer:

The percentage error is 3.6 % .

Step-by-step explanation:

Formula

$Error\ percentage = \frac{Error\times 100}{Exact\ value}$

$Error = \left |Approx - Exact \right |$

As given

Annie estimates that the height of a bookcase is 78.25 in. The actual height is 75.50 in.

Here

Approx value = 78.25 in

Exact value = 75.50 in

$Error = \left |78.25 - 75.50\right |$

Error = 2.75

Put in the formula

$Error\ percentage = \frac{2.75\times 100}{75.50}$

$Error\ percentage = \frac{275}{75.50}$

Error percentage = 3.6 %

Therefore the percentage error is 3.6 % .

You might be interested in

Combine as indicated by the terms <br> x-y/x+y - x+y/x-y

RSB [31]

The answer is -1 because when cross simplifying you get 0/2-2/0 which =-2/2 and that simplified is -1

The answer is -1

6 0

3 years ago

Which is best estimate of the circumference of this circle when radius is 3

nydimaria [60]

Answer:

D/About 18.85

Step-by-step explanation:

So, Using the Circle Circumfrince Formula:

$A=2\pi r\\A=6\pi \\A=18.85....$

There you go!

Hope this helps!

P.S. Stay Safe!

4 0

3 years ago

A brand of diet chips has 30% of the calories of the regular brand. If the diet brand has 90 calories, how many calories does th

mina [271]

It's true that many people are eating more fat and calories than they need. ... If fats that a person has eaten aren't burned as energy or used as building blocks, ... so to figure out how many calories you're eating, you'll need to do three things: ... A small bag of corn chips may contain two or more servings — although most ... Here are the best and worst healthy chips to try. ... Diet & Nutrition ... potato chip consumption has been linked to weight gain), it can be difficult to ... the top snack brands that claim to be healthier alternatives to regular potato chips, ... Read on to find out which surprising brand is your best choice, and which ...

4 0

3 years ago

egment AB falls on line 2x − 4y = 8. Segment CD falls on line 4x + 2y = 8. What is true about segments AB and CD?

jolli1 [7]

Answer:

The line segments AB and CD are perpendicular to each other.

Step-by-step explanation:

Segment AB falls on line 2x − 4y = 8.

Rearranging the equation into slope-intercept form we get, ............. (1)

Therefore, slope of the line segment AB is

Now, the segment CD falls on line 4x + 2y = 8.

Rearranging the equation into slope-intercept form we get, ............. (2)

Therefore, the slope of the line segment CD is, N = - 2

So, M × N =

Hence, we can conclude that the line segments AB and CD are perpendicular to each other

8 0

4 years ago

A cosmetics company makes three batches of a nail polish color called Purple Dusk using the recipe shown.

Ivanshal [37]

Answer:

Batch 1:- Red 2 ounces Blue 1 1/2 ounces

Batch 2:- Red 3 White 3 3/4 ounces.

Batch 3:- White 4 1/6 Blue 2 1/2 ounces.

Step-by-step explanation:

Batch 1

Amount of the white paint = 5/12 of the batch = 2 1/2 or 5/2 ounces.

5/12 is equivalent to 5/2 ounces of white paint.

1/12 ......................... 5/2 / 5 = 5/10 = 1/2 ounce.

Red paint.

!/3 of the product contains red paint which is 4/12 so this is 4 times 1/12 = 4 * 1/2 ounce = 2 ounces of red paint.

Blue paint.

Similarly to the above amount of blue paint = 1/4 =3/12

= 3 * 1/2 = 1 1/2 ounces of blue paint.

Batch 2.

We can calculate the missing quantities in a similar way to Batch 1.

Blue Paint = 3/12 of the product = 2 1/4 ( = 9/4) ounces so

1 /12 =

9/4 * 1/3 = 9/12 = 3/4 ounce

Red Paint:- 1/12 is equivalent to 3/4 ounce so

Amount of red paint = 4 * 3/4 = 3 ounces (answer)

White paint = 5 * 3/4 = 15/4 = 3 3/4 ounces (answer)

Batch 3.

Red paint = 3 1/3 ounces is equivalent to 4/12 of the product.

So 1/12 = 10/3 / 4 = 10/12 = 5/6 ounces.

White paint = 5/6 * 5 = 4 1/6 ounces.

Blue paint = 5/6 * 3 = 15/6 = 2 1/2 ounces.

3 0

3 years ago