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astraxan [27]
3 years ago
8

Help? (i mark brainlist)

Mathematics
2 answers:
Annette [7]3 years ago
3 0
The answer is D
Hope this helps :)
Brrunno [24]3 years ago
3 0
Answer: d
Explanation:
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37 is the answer
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Solve the inequality.<br> 2(4+2x)≥5x+5<br> A. x≤−2<br> B. x≥−2<br> C. x≤3<br> D. x≥3
LenaWriter [7]

\text{Solve for x:}\\\\2(4+2x)\geq5x+5\\\\\text{Use the distributive property}\\\\8+4x\geq5x+5\\\\\text{Subtract 5x from both sides}\\\\8-x\geq5\\\\\text{Subtract 8 from both sides}\\\\-x\geq-3\\\\\text{Divide both sides by -1, while also flipping the inequality}\\\\x\leq3\\\\\boxed{\text{Answer: C.} \,x\leq3}

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3 years ago
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A rocket is launched from a tower. the height of the rocket, y in feet, is related to the time after launch, x in seconds, by th
GaryK [48]

Answer: 10.17\ seconds

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Given the following Quadratic equation:

y=-16x^2+153x+98

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1. Substitute y=0 into the equation:

0=-16x^2+153x+98

2. Use the Quadratic formula x=\frac{-b\±\sqrt{b^2-4ac}}{2a}.

In this case:

a=-16\\b=153\\c=98

Substituting values into the Quadratic equation, you get (Round the values to the nearest hundreth):

x=\frac{-153\±\sqrt{153^2-4(-16)(98)}}{2(-16)}\\\\x_1=10.17\\x_2=-0.60

3. The positive value is the time that the rocket will hit the ground.

Therefore, the rocket will hit the ground after 10.17\ seconds.

7 0
3 years ago
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OleMash [197]

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3 years ago
What the solution 2(4+2x)≥5x+5
olga nikolaevna [1]

Answer:

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4(2) + 2x(2) ≥ 5x + 5

8 + 4x ≥ 5x + 5   (subtract 8 from each side)

4x ≥ 5x + 5  - 8

4x ≥ 5x - 3    (subtract 5x from both sides)

4x -5x ≥ - 3

-x  ≥ - 3  (multiply both sides by -1, remember to flip the inequality when multiplying both sides by a negative number)

x ≤ 3

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