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kogti [31]
3 years ago
9

Grace made tables of values to solve a system of equations. First, she found that the x-value of the solution was between 0 and

1, and then she found that it was between 0.5 and 1. Next, she made this table.

Mathematics
2 answers:
kvasek [131]3 years ago
8 0

Answer:

OPtion C is correct answer.

Step-by-step explanation:

Given that there is a system of equations as

y =-4x+3 and y =3x+1

Table is prepared with side by side values of y for a given x

From the table we are to find the solution of the system

On analysing the table we find that the difference between two y's is

0.5, -0.2, -0.9, -1.6, -2.3,-3

Hence we select the one which shows minimum difference i.e. -0.2

For this, x = 0.6

When x =0.6, y shows two values as 0.6 and 0.8

So we approximate y value as average of these two i.e. 0.7

So solution is

(0.6, 0.7)

liraira [26]3 years ago
3 0

Answer: C


Step-by-step explanation:


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A total of 50 juniors and seniors were given a mathematics test. The 35 juniors attained an average score of 80 while the 15 sen
Alik [6]

Answer:

77

Step-by-step explanation:

Firstly, we need to calculate the total score of the junior students and the total score of the senior students.

The total score of the junior students is 35 * 80 = 2,800

The total score of the senior students is 15 * 70 = 1050

The total score is thus 2,800 + 1,050 = 3,850

The average score of the 50 students is thus 3,850/50 which equals 77

8 0
3 years ago
Plz help
Sergio039 [100]
2(5*4)+2(4*3)+2(3*5)=94 sq.m (Orginial SA)
2(4*5)+2(5*6)+2(6*4)=148 sq.m (Total SA)

148-94=54 (New SA)
4 0
3 years ago
Read 2 more answers
Does 27.93 equal to this 20.7+0.9+0.03
nexus9112 [7]
No,27.93 equals <span>20.00+7.00+0.9+0.03</span>
5 0
3 years ago
Need help with this​
blondinia [14]

Answer:

  • r = √(3V/(πh))
  • r ≈ 1.78 cm

Step-by-step explanation:

Multiply by the inverse of the coefficient of r², then take the square root.

  V=\dfrac{1}{3}\pi r^2h\\\\V=\dfrac{\pi h}{3}r^2\\\\r^2=\dfrac{3V}{\pi h}\\\\\boxed{r=\sqrt{\dfrac{3V}{\pi h}}}

For V=50, h=15, this is ...

  {r=\sqrt{\dfrac{3(50)}{\pi(15)}}=\sqrt{\dfrac{10}{\pi}}\approx\boxed{1.78\quad\text{cm}}

4 0
3 years ago
Write the equation in slope-intercept form. y + 5 =- 6(x + 7)​
Dmitry [639]
The answer is : y=-6-47
:)
6 0
3 years ago
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