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photoshop1234 [79]
3 years ago
15

Translate the following word phrase into an algebraic expression.

Mathematics
1 answer:
morpeh [17]3 years ago
4 0

Answer:

D

Step-by-step explanation:

4x + 7

this is exactly, 1:1, what the sentence said.

the product of 4 and a number = 4x

is increased by 7 = 4x + 7

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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
Firlakuza [10]

Answer:

Time required to hit the ground is 7.9 s.

Step-by-step explanation:

The height of the rocket is given by

y =- 16 x^2 + 119 x + 57

For the time to hit the ground, put y = 0

-16x^2+119x+57=0\\\\16 x^2 - 119 x - 57 = 0 \\\\x = \frac{119\pm\sqrt{14161+3648}}{32}\\\\x = \frac{119\pm133.45}{32}\\\\t = - 0.45 s, 7.9 s

Time cannot be negative, so time to hit the ground is 7.9 s.

6 0
3 years ago
Archeologists use carbon-14 which has a half-life of 5730 years to determine the age of the artifact in carbon dating. How much
Musya8 [376]

Answer:

50 percent

5,730 years; The graph shows that 50 percent of the carbon-14 atoms have decayed after 5,730 years, so 5,730 is the half-life of carbon-14. 2. 12.5% 3.

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3 0
3 years ago
A bead is formed by drilling a cylindrical hole of 2mm diameter through a sphere with an 8mm diameter. Estimate the volume of th
Juliette [100K]

Volume of the bead = Volume of the sphere - volume of the cylindrical hole = 242.95 mm³.

<h3>What is the Volume of a Sphere and a Cylinder?</h3>
  • Volume of a sphere = 4/3πr³
  • Volume of a cylinder = πr²h

Volume of the bead = Volume of the sphere - volume of the cylindrical hole

= 4/3π(4³) - π(1²)(8)

= 268.08 - 25.13

Volume of the bead = 242.95 mm³

Learn more about volume of sphere on:

brainly.com/question/22807400

8 0
2 years ago
Which function is graphed below? <br> Y= 1/3(3)x <br> Y=3(1/3)x<br> Y=(1/2)x+2<br> Y=(2)x -1
pashok25 [27]
I can’t tell you the answer because I can’t see the function that’s on the graph :)
3 0
3 years ago
Graph y= 1/3x+3 .<br> i need help with it
Olenka [21]

Answer:

the y intercept is 3 and you go up 1 over 3 from the y intercept

Step-by-step explanation:

the y intercept is 3 and you go up 1 over 3 from the y intercept

7 0
3 years ago
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