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erik [133]
3 years ago
14

Select the order pair(s) that are solutions to this system of inequalities:

Mathematics
1 answer:
Phoenix [80]3 years ago
5 0
You need to substitute the ordered pairs into the system of equations and pick the ones that makes the system of equations true: 

0 < -3(0) + 2  (True)
0 ≥ 0 - 1         (True) 
----------------
-4 < -3(0) + 2 (True)
-4 ≥ 0 - 1        (False) 
----------------
4 < -3(1) + 2  (False)
4 ≥ 1 - 1         (True) 
----------------
3 < -3(-3) + 1 (True)
3 ≥ -3 - 1        (True)
----------------

The Answer is (0,0) and (-3,3)
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Five times the sum of three times a number and 4 is -10, find the number.
Minchanka [31]

Answer:

-2

Step-by-step explanation:

5[3x+4)]=-10

15x+20= -10

15x=-30

x= -2

5 0
4 years ago
the sum of two integers with different signs is 8. give two possible integers that fit this description
hammer [34]
Two of the possible answers might be the followings:
 a. 10+(-2)=8
b.    9+(-1)=8
so the integers are +10, -2  and +9, -1
3 0
3 years ago
A company in Maryland has developed a device that can be attached to car engines, which it believes will increase the miles per
HACTEHA [7]

Answer:

About 0.72

Step-by-step explanation:

Given the data:

With device : 22.6, 23.4, 28.4, 29, 29.3, 20.0

Without device :26.9, 24.4, 20.8, 20.8, 20.2, 26.0, 28.1, 25.6

Using calculator:

With device data:

Sample size (n1) = 6

Degree of freedom (df1) = 6 - 1 = 5

Mean(m1) = 25.45

Variance (s²1) = 15.631

Without device data:

Sample size (n2) = 8

Degree of freedom (df2) = n - 1 = 7

Mean (m2) = 24.1

Variance (s²2) = 9.54

s²t = ((df1/(df1 + df2)) * s²1) + ((df2/(df1 + df2)) * s²2)

s²t = ((5/(5+7)*15.63) + ((7/(5+7))*9.54)

= ((5/12) * 15.63) + ((7/12) * 9.54) = 12.0775

s²m1 = s²t/n1 = 12.0775/6 = 2.0123

s²m2 = s²t/n2 = 12.0775/8 = 1.511

T - statistic :

Tstat = (m1 - m2)/√(s²m1 + s²m2)

Tstat = (25.45 - 24.10) / √(2.0123 + 1.511)

Tstat= 1.350/√3.5233

Tstat = 1.350 / 1.8770455

Tstat = 0.7192153 = 0.72

8 0
3 years ago
Is 3/4 proportional to 6/15 ​
LiRa [457]

answer:

no

step-by-step explanation:

step one- cross multiply

3*15=4*6

step two- multiply

3*15=45 4*6=24

step three- simplify

45=24

45 and 24 aren't equal, therefore 3/4 and 6/15 are not proportional

good luck :)

i hope this helps

have a nice day !!

4 0
3 years ago
What Is the place value of 8 in 5678
Yakvenalex [24]
That would be the ones place, because 7 would be the tens place, 6 would be the hundreds place, and 5 would be the thousands place.
Hope this helped >.<
6 0
3 years ago
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