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navik [9.2K]
3 years ago
5

Pls help me pls pls pls help me. thanks. ​

Mathematics
2 answers:
Naddika [18.5K]3 years ago
3 0

Answer:

7ab

Hope it helped.

nikdorinn [45]3 years ago
3 0

Answer:

Step-by-step explanation:

21ab² = 3 * 7 * a * b²

28abc = 2 * 2 * 7 * a * b * c

42abc² = 2 * 3 * 7 * a * b * c

HCF = 7ab

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a student scores 71 out of 100 on a test, if the maximum score on the tests is also 100, what score does the student need to mai
Nonamiya [84]
(71+x)/2=78
71+x=156
x=85

Th student needs to score a min of 85
8 0
3 years ago
Stanley makes paper constellations. The following data points represent how many stars were in each
____ [38]

Answer:

Check Explanation and the attached image.

Step-by-step explanation:

The histogram of the set of data presented is presented in the attached image to.this solution

The histogram represents data by indicating the frequency of distribution on the y-axis and the sets of variables indicated on the x-axis.

With the constellations named numbers 0 to 6, the frequency of each constellation, that is, the number of stars in each constellation corresponds to the height of the bar representing each constellation.

Hope this Helps!!!

5 0
3 years ago
The graph below describes the journey of a train between two cities.
Veseljchak [2.6K]

Answer:

[A] Acceleration in first 15 min = 200  km/h²

[B] Distance between two cities = 125 km

[C] Average Speed of journey =  62.5  km/hr

Step-by-step explanation:

To Solve:

Acceleration in first 15 min

Distance between two cities  

Average speed of journey

Solve:

[A] Work out the acceleration, in km/h?, in the first 15 mins.

Each horizontal block is 1/8 hr = 7.5 min

Each vertical block is 10 km/hr

Time                     Velocity  km/hr

0 Min  ( 0 hr)            0

15 Min (1/4 hr)           50

45 Min (3/4 hr)         50

60 MIn  ( 1 hr)            100

90 Min  ( 3/2 hr)        100

120 Min ( 2hr)            0

Acceleration in first 15 min  (1/4 hr)  =  (50 - 0)/(1/4 - 0)  = 50/(1/4)

= 200  km/h²

Hence, Answer for [A] = 200  km/h²

[B] Work out the distance between the two cities. $60 Velocity (in km/h)

= (1/2)(0 + 50)(1/4 - 0)  + 50 * (3/4 - 1/4)  + (1/2)(50 + 100)(1 - 3/4)  + 100 * (3/2 - 1) + (1/2)(100 + 0)(2 - 3/2)

=  25/4  + 25 + 75/4   + 50 + 25

= 125

Distance between two cities = 125 km

[C] Work out the average speed of the train during 20 the journey.

Average Speed of journey = 125/2  = 62.5  km/hr

[RevyBreeze]

5 0
3 years ago
4.1.3 Quiz: Simple interest
Ne4ueva [31]

Answer:

simple intrest

Step-by-step explanation:

because intrest

4 0
3 years ago
Read 2 more answers
A central angle of a circle measures 42 degrees. What else can be shown to measure 42 degrees?
Slav-nsk [51]

Answer:

Vertically opposite angles

Step-by-step explanation:

Given

\theta = 42^\circ

Required

What else can measure \theta = 42^\circ

The question has missing options. So, I will give a general explanation.

Using the attached image as a point of reference.

Given that:

\theta = 42^\circ

The value of b is calculated as:

b = \theta

Because b and \theta are vertically opposite angles

<em>This gives:</em>

<em></em>b = 42^\circ<em></em>

<em></em>

<em>So, one possible answer to the question is a vertically opposite angle</em>

4 0
3 years ago
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