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Stels [109]
3 years ago
15

HELP ME ASAP PLEASE!

Mathematics
1 answer:
vodomira [7]3 years ago
4 0
The first one is the answer.
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A student estimated a mass of 250grams, according to the scale the mass is actually 240grams. What is the percent error? (round
NeX [460]

Answer:

4.2%

Step-by-step explanation:

percent error = (estimated value - actual value)/(actual value) × 100%

Here, the estimated value is 250 g, and the actual value is 250 g.

percent error = (estimated value - actual value)/(actual value) × 100%

percent error = (250 g - 240 g)/(240 g) × 100%

percent error = 10/240 × 100%

percent error = 0.041666... × 100%

percent error = 4.2%

4 0
3 years ago
Read 2 more answers
raffle tickets are being sold for a fundraiser. The relationship between n, number of raffle tickets sold, and A, amount of mone
jolli1 [7]

Answer:

D. N(a) = (a + 20)/3

Step-by-step explanation:

A(n) = 3n - 20

A is a function of n. The inverse will be: N is a function of a.

Change A(n) to y and n to x.

y = 3x - 20

Switch x and y.

x = 3y - 20

Solve for y.

x + 20 = 3y

3y = x + 20

y = (x + 20)/3

Now switch y to N(a) and x to a.

Answer: N(a) = (a + 20)/3

8 0
4 years ago
Read 2 more answers
Help me please it is due tomorrow help with 2 or 3 just what in the boxes a nd who has what
artcher [175]
2640 is the answer for number 2.


4 0
3 years ago
Read 2 more answers
Due to inflation, the price of an item increased by 45% and then dropped by 20%. By what percent did the price increase?
Marysya12 [62]

<u>Answer</u>:

Percentage of increase = 16%

===============================================

<u>Step-by-step explanation:</u>

Let the price of an item ⇒ x

When the price of the item increased by 45%, the price will be ⇒ 1.45 x

Then dropped by 20%

So, the final price will be ⇒ (1 - 0.2) * 1.45x = 0.8 * 1.45 x = 1.16 x

By comparing between the original price and the final price

The difference = 1.16 x - x = 0.16x

Percentage of increase = \frac{1.16x}{x} *100=16%

8 0
3 years ago
1/2(n-5)=1/2(23-5) I cannot find what’s half of 23-5
liraira [26]

Answer:

n = 23

Step-by-step explanation:

if 1/2 (n-5) = 1/2 (23-5)

that must mean that n=23.

and if you are just looking for 1/2 of 23-5 that is just 9. (23-5) = 18 and half of 18 is 9

3 0
3 years ago
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