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zmey [24]
3 years ago
5

Which of the following values satisfies the inequality 9 < 2x + 7 < 15?

Mathematics
1 answer:
scZoUnD [109]3 years ago
8 0

Answer:

B. X = 2

Step-by-step explanation:

2(0)+7 = 7 --> 7<9 so no

* 2(2)+7 = 11 --> 9<11<15 so yes *

2(4)+7 = 15 --> 15 = 15 so no

2(6)+7 = 19 --> 19>15 so no

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Does translation change a shapes orientation
lara [203]

Answer:

No

Step-by-step explanation:

Translation only moves a shape from one spot to another.

6 0
3 years ago
Read 2 more answers
In the diagram below, value of x is: <br><br> A. 11 <br><br> B. 55<br><br> C. 5<br><br> D. 35
koban [17]
Sum of complementary angles = 90
so
5x + 35 = 90
5x = 90 -35
5x = 55
x = 11

answer is A. 
x = 11
3 0
2 years ago
Can u please solve this question?
Lapatulllka [165]

Answer:

It is TRUE for all Real numbers, i.e. [x] = ]x+1[ for all x∈R.

Step-by-step explanation:

Let's write given statement as [ x ]  = ] x+1 [

where [ x ] step function means next integer greater than or equal to x,

and ] y [ means last integer less than or equal to y.

Let's take an example of x = 2.5

So  [ 2.5 ] = 3.

and ] 2.5 + 1 [ = ] 3.5 [ = 3.

Similarly, we can take any example of Real numbers like 3.7, 4.2, 5.6, 8.9 etc.

It is TRUE for all Real numbers, i.e. [x] = ]x+1[ for all x∈R.

3 0
3 years ago
I will give u brainliest
Dmitry_Shevchenko [17]

Answer:

1 & 2 = Right Triangles

3 & 4 = Not Right Triangles

Step-by-step explanation:

Solved Using Pythagorean Theorem:

1) 9^{2} + 12^{2} = 225

15^{2} = 225

2) 15^{2} + 36^{2} = 1521

39^{2} = 1521

3) 10^{2} + 26^{2} = 776

28^{2} = 784

4) 10^{2} + 12^{2} = 244

16^{2} = 256

3 0
3 years ago
collect data (in decibels) of 10 different things in term of loudness. Arrange the data in ascending order &amp; find mean, medi
ss7ja [257]
Whisper-20dB
Quiet Residence-30dB
Soft stereo in Residence-40dB
Average Speech-60dB
Cafeteria-80dB
Pneumatic Jackhammer-90dB
Loud crowd noise-100dB
Accelerating Bike-100dB
Rock concert-120dB
Jet Engine (75 ft away)-140dB

(1)Mode=100dB (since 100 is occurring the maximum no. of times, i.e. it has the highest frequency of 2)
(2)Mean=sum of observations/Total number of observations
=(20+30+40+60+80+90+100+100+120+140)/10
=770/10=10dB
(3)Median= 1/2[{n/2}th observation + {(n/2)+1}th observation], where, n=total no. of observations
So, 1/2[{10/2}th observation + {(10/2)+1}th observation]
=1/2[5th observation+6th observation]
=1/2[80+90]                    [Because:5th observation=80dB and 6th=90dB]
=1/2(170)
=85
Therefore, median=85dB

6 0
3 years ago
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