3 years ago

HHEEEEEEEELLLLPPPPPPPP 11 POINTS

Mathematics

1 answer:

svp [43]3 years ago

7 0

The answer is C........

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Which table of ordered pairs represents a proportional relationship?

Alexandra [31]

Answer:

Step-by-step explanation:

2x5=10

4x5=20

8x5=30

8 0

3 years ago

You took 3 test. Your median score was 80, your mean score was 79, and the range was 17, what were your first 3 test scores ?

Monica [59]

Answer:

80, 70 and 87

Step-by-step explanation:

-Range is mathematically defined as the difference between the largest and smallest data point in a data set.

-Given the mean=79, median=80 and the range is 17.

#let a be the largest score and b be the smallest score:

$a-b=17\\\\\bar x=79=\frac{\sum{x_i}}{3}\\\\\therefore x_i=79\times 3=237\\\\$

The sum of the 3 scores is equivalent to the 237.

#we subtract the given median and equate using range to solve for a and b;

$a+b+80=237\\\\a+b=157\ \ \ \ \ \ ...i\\\\a-b=17\ \ \ \ \ \ ...ii\\\\\#from \ ii\\a=17+b\\\\\therefore\\17+b+b=157\\\\2b=140\\\\b=70\\\\a=17+b=17+70=87$

Hence, the test scores are 80, 70 and 87

5 0

3 years ago

A constant force of 85 N accelerates towards a 10 kg box from a speed of 3.0 m/s to a speed of 7.0 m/s as it goes 14 m along a h

photoshop1234 [79]

Answer:

Step-by-step explanation:

Let us find the acceleration of box .

v² = u² + 2as

Putting the values

7² = 3² + 2 a x 14

a = 1.43 m /s²

If coefficient of friction be μ

force of friction = μ mg

= μ x 10 x 9.8

= 98μ

Net force pushing the box

= 85 - 98μ

Applying newton's second law

85 - 98μ = 10 x 1.43

98μ = 85 - 14.3

μ = .72

5 0

3 years ago

Simplify 10 1/2(1 1/7x+2/3)+5 5/6(2 2/5x+4 2/7)

joja [24]

Answer:

26x+32

Step-by-step explanation:

5 0

3 years ago

A. ><br> B. <<br> C. =<br> D. none of the above

Korvikt [17]

Answer:

i think the answer is >

Step-by-step explanation:

Hoped this helped

pls tell me if im wrong

3 0

2 years ago

Read 2 more answers