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Natasha_Volkova [10]
3 years ago
14

The solution set for all real numbers x such that 2x + 3 < 19 and 2x − 3 ≤ -7 is (blank, blank]

Mathematics
1 answer:
fgiga [73]3 years ago
3 0
Hello : 
<span>2x + 3 < 19 and 2x − 3 ≤ -7 :
the system :
</span><span>2x + 3 < 19 .....(1)
2x − 3 ≤ -7......(2)
by (1) : 2x </span>< 16
             x < 8
by(2) : 2x  ≤ -4
           x ≤ -2
conclusion :   x < 8 and  x ≤ -2
The solution set  is : x ≤ -2
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A race car accelerates at 2 m/s2 from 12 m/s to 18 m/s. Find distance and time
Marizza181 [45]

Answer:

Distance = 45 meters

Time = 3 seconds

Step-by-step explanation:

Here, we want to calculate distance and time

To find the time, we can use one of the Newtons law of motion

V = U + at

In this question

V = final velocity = 18 m/s

U = initial velocity = 12 m/s

a = acceleration

Thus;

18 = 12 + 2(t)

18-12 = 2t

2t = 6

t = 6/2

t = 3 seconds

Mathematically we can also find the distance using one of the equation of motion;

D = ut + 1/2 at^2

D = 12(3) + 1/2 * (2) * 3^2

D = 36 + 9

D = 45 m

6 0
3 years ago
Y=1/5x+3 what is the graphing for this problem
nirvana33 [79]
This is not clear sorry

4 0
3 years ago
The length of atrain car is 50.6 feet. This is 5.8 feet less than 6 times the width. What is the width?
hichkok12 [17]
∗ l = 50.6 ft
∗ w = ?

∗ The length is 50.6 feet. The question is saying that 50.6 is 5.8 feet less than 6 times the width.

∗ 6w - 5.8 = 50.6

∗ 6w = 56.4

∗ w = 9.4

Now lets check.

∗ If the length is 5.8 feet less than 6 times the width, and we found 9.4 as the answer, then;
6 times 9.4 - 5.8 should equal 50.6

∗ 6 • 9.4 - 5.8 = l

∗ 56.4 - 5.8 = l

∗ 50.6 = l


⋆The width is 9.4 feet⋆

♡´・ᴗ・`♡вяαιиℓιєѕт ρℓєαѕє♡´・ᴗ・`♡


5 0
3 years ago
Help number 16 sos please
natta225 [31]
The answer is 0.4722. I hope this helps :)
5 0
3 years ago
Please help it’s probably Easy but I don’t know
hoa [83]

Answer:

7 × 1/5

Step-by-step explanation:

hope this helps

7 × 1/5= 1.40

7 0
3 years ago
Read 2 more answers
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