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3 years ago

John spent $75 on a shopping trip for new clothes last week. He had expected to spend $100 on clothes,

Mathematics

1 answer:

timofeeve [1]3 years ago

4 0

Answer:

Absolute error = $25

Step-by-step explanation:

Given that:

Amount spent by John on shopping trip = $75

Estimated amount to spent on shopping trip = $100

Absolute error = Approximate value - Exact value

Here,

Approximate value = $100

Exact value = $75

Absolute error = 100 - 75

Absolute error = $25

Percentage = $\frac{Absolute\ error}{Exact\ value}*100$

Percentage = $\frac{25}{75}*100$

Percentage = 33.33%

Hence,

Absolute error = $25

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Christy walks from her house to a bus stop that is 380 yards away a. If Christy is 10 yards from her house, how far is she from

puteri [66]

Answer:

a) 370 yards

b) 196.6 yards

c) z ∈ (0, 380)

d) The variable z assumes infinite values, since there are infinite position numbers from z = 0 yards to z = 320 yards.

Step-by-step explanation:

a) (380 - 10 ) yards = 370 yards

b) (380 - 183.4) yards = 196.6 yards

c) and d)

This situation can be described as a horizontal line that begins at point

P₁ = 0 yards (Christy's house) and ends at P₂ = 320 yards (Bus stop). Where a is the varying distance from her house, which can be calculated in the following way:

z = Final Position - Initial Position

As Christy walks from her house to the bus stop, the variable z assumes infinite values, since there are infinite position numbers from z = 0 yards to z = 320 yards.

6 0

3 years ago

The twenty-six coins in my pocket are all dollar coins and quarters, and they add up to seventeen dollars in value. How many dol

Law Incorporation [45]

Currency such as dollars can come in various forms such as dimes, quarters, pennies, and nickels.

The number of quarter coins is 12 and the number of dollar coins is 14 coins.

Let's represent:

The number of 1 dollar coin = d

The number of 1 quarter coin = q

The twenty-six coins in my pocket are all dollar coins and quarters. The algebraic equation for this statement above is =

d + q = 26 ........ Equation 1

Making d the subject of the formula

d = 26 - q

1 dollar coin = $1

1 quarter = $0.25

The value of the dollar and nickel coins is seventeen dollars. The algebraic expression for this statement is :

$1 x d + $0.25 x q = 17

d + 0.25q = 17.................Equation 2

Substitute 26 - q for d in Equation 2

26 - q + 0.25q = 17

Collecting like terms

26 - 17 = q - 0.25q

9 = 0.75q

Divide both sides by 0.75

9/0.75 = 0.75q/0.75

q = 12 coins

Solving for number of dollar coins

d = 26 - q

q = 12

d = 26 - 12

d = 14 coins

Therefore, the number of quarter coins is 12 and the number of dollar coins is 14 coins.

To learn more, visit the link below:

brainly.com/question/22799498

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2 years ago

QUICK!!!! BRAINLIEST GETS 40 POINTS

muminat

Answer:

i think it is c

Step-by-step explanation:

plz give brainliest.....

5 0

3 years ago

Read 2 more answers

What is the greatest common factor of 24s3, 12s4, and 18s?

slava [35]

Answer:

Step-by-step explanation:

The GCF if 24s^3, 12s^4 and 18s is

24s^3: 2^3 * 3 s s s

12s^4: 2^2 * 3 s *s* s* s

18s: 3^2 * 2 s

3s is the GCF

7 0

3 years ago

Transforme em π rad :<br>a)30°<br>b)40°<br>c)45°<br>d) 50°

Roman55 [17]

Answers:

a) $\frac{1}{6} \pi rad$

b) $\frac{2}{9} \pi rad$

c) $\frac{1}{4} \pi rad$

d) $\frac{5}{18} \pi rad$

Step-by-step explanation:

In this case we are dealing with angles, which can be expressed in degrees ( $\°$ ) or radians ( $rad$ ).

Now, before making the conversions we have to know the equivalence between degrees and radians:

$180 \°=1 \pi rad$

Taking this information into account, let's begin with the answers:

a) $30\° \frac{1 \pi rad}{180 \°}=\frac{1}{6} \pi rad$

b) $40\° \frac{1 \pi rad}{180 \°}=\frac{2}{9} \pi rad$

c) $40\° \frac{1 \pi rad}{180 \°}=\frac{1}{4} \pi rad$

d) $50\° \frac{1 \pi rad}{180 \°}=\frac{5}{18} \pi rad$

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4 years ago