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allochka39001 [22]
2 years ago
11

-3x + 7 - 5x < 15 true ​

Mathematics
1 answer:
Helen [10]2 years ago
5 0

Answer:

x>-1

Step-by-step explanation:

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Solve the quadratic by quadratic formula below<br><br> x squared-14x=-49
lubasha [3.4K]
X^2-14x+49=0

Factor
(x-7)(x-7)

Check
-7-7=-14
-7*-7=49

Use ZPP
x-7=0
x=7

Final answer: x=7
5 0
3 years ago
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Evaluate the function f(x)= -2x +1 for f(3). <br><br> A)-5<br> B)6<br> C)7<br> D)10
pantera1 [17]
<span>f(x)= -2x +1 for f(3)

f(3) = -2(3) + 1 = -5

answer
</span><span>A)-5</span>
4 0
2 years ago
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You are competing in a race. The table shows the times from last year's race. You want your time to be last year's median time w
olasank [31]

Answer:

  28 ≤  x ≤40

Step-by-step explanation:

Arrange the data from the smallest to the largest

26, 27, 28,32, 32, 33, 35, 36, 38, 40,42,48

Identify the median value

26, 27, 28,32, 32,<u> 33, 35</u>, 36, 38, 40,42,48

Getting the median

(33+35)/2   =  68/2  = 34 minutes

You want your time to be last year's median time with an absolute deviation of at most 6 minutes

This mean ±6 minutes, hence this will be 34 ± 6

34+6=40  and 34-6=28

The inequality will be    28 ≤  x ≤40

7 0
2 years ago
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A semi- circle has an area of 35cm . What is its diameter?
patriot [66]

Answer:

<h2>Area Semicircle = 1/2 πr² </h2>

where

r radius of semicircle

→ ½ * 22/7 * r² = 35

→ 11/7 * r² = 35

→ r² = 35*7/11

→ r² = 245/11

→ r² = 22.77

→ r = √22.77

→ r = 4.77

Therefore,

Diameter = 2*4.77

= 9.54 cm

5 0
2 years ago
2√3 ∙ 3√2<br> Multiple choice<br> 5√5<br> 5√6<br> 6√6<br> Not possible<br> None of the above
nevsk [136]
2√3 ∙ 3√2= 6√6
alternate form- 14.69
5 0
3 years ago
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