All categories

2 years ago

Julianne desk is 75 centimeters long she say her desk is 7.5 meters long describe her error

Mathematics

2 answers:

allsm [11]2 years ago

8 0

First of all she said meters instead of centimeter.
and 2 she added a decimal point in between 7 and 5.

algol132 years ago

8 0

7.5 means it is 7 meters and 5 centimeters but 75cm is 0.75 or just 75cm

You might be interested in

I just need to know how to do these questions in the picture above^?

Sav [38]

In the second one I'm pretty sure you just measure the length of the points.

5 0

2 years ago

Read 2 more answers

In the month of June, the temperature in Johannesburg, South Africa, varies over the day in a periodic way that can be modeled a

Art [367]

Answer:

The answer is " $\bold{T = - 7.5 \cos \frac{\pi}{12}( t - 4 )+ 10.5}$ "

Step-by-step explanation:

Given value:

Temp-maximum= $18^{\circ}$

Temp. minimum = $3^{\circ}$

It is halfway between 10 am and 10 pm to 4 am.

The sinus and cosine roles could be used throughout the year to predict fluctuations in climate models. Its type of formula that can be used to model such information is:

$T = A \cos B(t-C) + D,$ where parameters are A, B , C, D, T is the ° C temperature and t is the time (1-24)

$A = amplitude = \frac{(T_{max} - T_{min})}{2}\\\\$

$= \frac{(3 - 18)}{2}\\\\= - \frac{15}{2}\\\\ = -7.5$

$B = \frac{2 \pi}{24}\\\\$

$= \frac{\pi}{12}$

$C = \text{ units translated to the right}= 4$

$D = y_{min} + amplitude = units \ translated \ up\\\\$

D = 7.5 + 3 = 10.5

Its trigonometric function equation that model temperature T hours after midnight in Johannesburg t.

$T = - 7.5 \cos \frac{\pi}{12}( t - 4 )+ 10.5$

6 0

3 years ago

What is the sign of -9. (0/-3)

katovenus [111]

Answer:

- is the answers for the question

Step-by-step explanation:

please mark me as brainlest

4 0

2 years ago

Find the percent of change. Round to the nearest tenth if necessary: 25 is increased by 80%

AleksAgata [21]

Answer:

Step-by-step explanation: Find what 80% of 25 is, you can do this by dividing 25 by 100. Then multiply the output by 80. Add that output to 25 and you should get an answer of 45.

6 0

1 year ago

A pet Shop manager wants the dame number of birds in each cage. He wants to use as few cages possible, but can only have one typ

KengaRu [80]

42 divided by 7 =6

18 divided by3 =6

7+3=10 cages

8 0

3 years ago

Read 2 more answers