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Nitella [24]
3 years ago
7

Deandra is doing her math homework. Out of 24 problems total, she completed the first 12 problems in 1 hour and the last 12 prob

lems in 3 hours. What is the unit rate for all 24 problems?
Mathematics
2 answers:
Travka [436]3 years ago
8 0
To find unit rate for all 24 problems.  
12 problems completed in 1 hour = 12 in 60 minutes
 Last 12 problems in 3 hours = 12 in 180 minutes
 Total 24 in (180+60= 240) minutes
 Time taken to solve one problem = 240/24 = 10 minutes. 
 This means Deandra on an average took 10 minutes to solve each problem.
AlladinOne [14]3 years ago
4 0

If you divide 12 by 3 the correct answer should be 4 problems per hour.

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KatRina [158]

Answer:

323,200,264,512

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8 0
3 years ago
Read 2 more answers
¿Cuál es el área de un rectángulo, sabiendo que su perímetro mide 24 cm y que su base es el triple de su altura?
Brrunno [24]

Answer:

El área del rectángulo es:

27 cm²

Step-by-step explanation:

Consideración:

La formula del perímetro de un rectángulo es:

p = 2(altura + base)

Planteamiento:

24 = 2(a+b)

b = 3a

a = longitud de la altura del rectángulo

b = longitud de la base del rectángulo

Desarrollo:

sustituyendo el valor de la segunda ecuación del planteamiento en la primer ecuación del planteamiento:

24 = 2(a + 3a)

24/2 = 4a

12 = 4a

a = 12/4

a = 3 cm

de la segunda ecuación del planteamiento:

b = 3a

b = 3*3

b = 9 cm

Comprobación:

de la primer ecuación del planteamiento:

24 = 2(3+9)

24 = 2*12

Respuesta:

la formula del área de un rectángulo es:

A = base * altura

A = 9cn * 3cm

A = 27cm²

5 0
3 years ago
Brianna is a waitress in an upscale restaurant. On Friday she waited on 12 groups of customers who spent an average of $186 per
givi [52]

Given :

Brianna is a waitress in an upscale restaurant. On Friday she waited on 12 groups of customers who spent an average of $186 per group.

Her tips averaged 18% of the total amount spent by all the groups of customers that day.

To Find :

Brianna's tip income earnings on Friday.

Solution :

Total amount of money spent by 12 groups :

P = $ 12×186 = $2232 .

She got tip of 18% of the total amount spent by all the groups of customers.

T = P\times \dfrac{20}{100}\\\\T= 2232\times \dfrac{20}{100}\\\\T=\$446.4

Brianna's tip income earnings on Friday is $446.4 .

Hence, this is the required solution.

4 0
3 years ago
FIND om if LO bisects
disa [49]
First you use Pythagorean theorem to find LO is square root of 194(13^2 + 5^2)=13.9. Then use the same method to find OM (194+13^2=363, square root of 363 is 19.1) and get that OM is 19.1
7 0
3 years ago
The table shows the length and width of proportional rectangles.
Korolek [52]

Answer:

60

Step-by-step explanation:

7 0
1 year ago
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