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Shalnov [3]
3 years ago
7

Please Help!! 8th Grade

Mathematics
1 answer:
vredina [299]3 years ago
7 0
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Solve 15 ≥ -3x or 2/5x ≥ -2. <br><br> A.) {x | x ≤ -5}<br> B.) {x | x ≥ -5}<br> C.) {all reals}
Lapatulllka [165]
15 \geq -3x\quad|:(-3)\qquad\vee\qquad  \dfrac{2}{5}x \geq -2\quad|\cdot5\\\\\\&#10;-5 \leq x\qquad\vee\qquad  2x \geq -10\quad|:2\\\\\\&#10;-5 \leq x\qquad\vee\qquad  x \geq -5\\\\\\x\geq -5\qquad\implies\qquad\boxed{\{x | x \geq -5\}}

Answer B.
6 0
3 years ago
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PLEASE HELP The coefficients of the first four terms in the expansion of (a + b) ^5 are a) 1, 3, 5, 7 b) 1, 4, 6, 4 c) 1, 2, 3,
xeze [42]

Answer:

D is the correct answer

Step-by-step explanation:

Fifth row of Pascal pyramid is 1 , 5, 10, 10, 5 , 1

The expansion should always have n + 1 number of terms

Where n is the power

5 0
3 years ago
Read 2 more answers
Plzzzzzzzzzz helpppppppp
Minchanka [31]

Answer:

i'd say do it with division what equals 31? im not going to say the staright up answer

]

7 0
2 years ago
16 &gt; - 8 + x<br><br> A. x &gt; 24<br><br> B. x &lt; 24<br><br> C. x &gt; 8<br><br> D. x &lt; 8
xeze [42]

Answer:

B. x < 24

Step-by-step explanation:

16 > - 8 + x

+8 > +8 + x     Add 8 to both sides

24 > x

Final answer: x < 24

6 0
3 years ago
Evaluate the expression for a = 5, b = 11, and c = 3. 2a + 2c(b − 5) A. 64 B. 46 C. 54 D. 163
Artemon [7]

2a +2c(b-5)

substitute a=5 b=11 c=3

2(5) +2(3) (11-5)

10+6(6)

10+36

46

Choice B


8 0
3 years ago
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