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3 years ago

−7x−50≤−1 AND−6x+70>−2

Mathematics

2 answers:

Jet001 [13]3 years ago

6 0

Answer:

B. -7 is less than or equal to x, which is less than 12

Step-by-step explanation:

-7x -50 </= -1

add 50 to both sides

-7x <= 49

divide both sides by -7. When you divide and inequality by a negative number, the direction of the inequality changes.

x >/= -7

---------------------------------

-6x + 70 > -2

subtract 70 from both sides

-6x > -72

divide both sides by -6, flipping the inequality sign

x < 12

------------------------------

Since the problem says *and*, we can say x is equal than or greater to -7 and less than 12

-7 </= x < 12

please let me know if you have questions, or if the signs don't come through clearly

Alchen [17]3 years ago

4 0

Answer:

That other persons explantion and answer is correct.

Step-by-step explanation:

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Answer:

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3 years ago

Find the value of x in the triangle shown below

frutty [35]

Answer:

sqrt(104) =x

Step-by-step explanation:

We can use the Pythagorean theorem since this is the right triangle.

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3 years ago

The diameter of a sphere is 2,160 mm. The diameter of a second sphere is 7,520 mm. Approximately how many times larger is the vo

fgiga [73]

Answer:

Approximately 42 times larger

Step-by-step explanation:

The diameter of a sphere is 2,160 mm.

The diameter of a second sphere is 7,520 mm.

To see how many times larger is the diameter of second sphere is than the diameter of the second sphere, we divide to get:

$k = \frac{7520}{2160}$

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To see how many times larger the volume is, we cube both sides

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4 years ago

Subtract (6a^2+3a) - (4a^2 + 2a)

Alexus [3.1K]

Answer:

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Step-by-step explanation:

(6a²+3a) - (4a² + 2a) (expand parentheses)

= 6a²+3a - 4a² - 2a (group like terms)

= 6a²- 4a²+3a- 2a

= 2a² + a

= a(2a+1)

7 0

3 years ago

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