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2 years ago

I need a little help. (The question is on the screenshot by the way)

Mathematics

2 answers:

vagabundo [1.1K]2 years ago

7 0

Answer:

Step-by-step explanation:

the answer iud D

Olegator [25]2 years ago

5 0

Answer:

$\boxed{8} < \sqrt{80} < \boxed{9}$

Step-by-step explanation:

$\sqrt{80} =8.94427191$

Since, 8.94427191 falls between 8 and 9.

$\therefore \: \boxed{8} < \sqrt{80} < \boxed{9}$

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Alexandra wants to invest in an option that would help to increase her investment value by the greatest amount in 20 years. How

Serjik [45]

Answer:

i d k

Step-by-step explanation:

7 0

2 years ago

A record of radius 15 cm is spinning at 45 revolutions per minute. What is the linear speed, in cm/min, of a point on the rim of

Afina-wow [57]

What you need to know for this case is that the linear velocity is defined as the product of the angular velocity by the radius.
We have then:
v = w * r
Substituting the values:
v = (45) * (15) = 675
v = 675 cm / min
answer:
The linear speed, in cm / min, of a point on the rim of the record is:
v = 675 cm / min

4 0

3 years ago

Megan's text messaging plan costs $15 for the first 600 messages and 5¢ for each additional text message. If she owes $24.60 for

kirill [66]

Create an equation where x equals extra messages

15 + .05X = 24.60

.05x = 9.60

x=192

So she sent 192 EXTRA messages. Add this to the original 600 and you get 792 messages

7 0

3 years ago

PLEASE HELP me solve algebraically. J) 4(1-2j) = 7(2j + 10) K) 4/3h=12 L) n/5= 2 + n/3 M) d/4 - 2/3 = 2 N= 7= -2 (-3 - x)

Paul [167]

Answer:

J ) j = - 3,

K ) h = 9,

M ) d = - 24,

N ) x = 1 / 2

Step-by-step explanation:

J )

$4(1-2j) = 7(2j + 10),\\4-8j=14j+70,\\-8j=14j+66,\\\\-22j=66,\\j = - 3,\\\\Solution, j = - 3$

I applied the distributive property, resulting in the second step. Afterwards I subtracted 4 from either side of the equation, received - 22j = 66 after combining like terms, and divided - 22 on either side to get j = -3.

K )

$4 / 3h = 12,\\4h = 36,\\h = 36 / 4 = 9\\\\Solution, h = 9$

Multiplying each end of the equation by 3 resulted in the simplified expression 4h = 36. Dividing either side by 4, I got h = 9.

M )

$d / 4 - d / 3 = 2,\\3d - 4d = 24,\\- d = 24,\\\\Solution, d = - 24$

Taking the LCM of 4 and 3, I got 12, multiplying either side by 12 / 12. Combining like terms and dividing - 1 on either side of the equation - d = 24, I received d = - 24.

N )

$7 = - 2 * ( - 3 - x ),\\- 3 - x = - 7 / 2,\\- x = - 1 / 2,\\\\Solution, x = 1 / 2$

After dividing the first equation by - 2 on each end, I received a simplified equation that, by adding 3 on it's part, got x to be = 1 / 2

8 0

3 years ago

Ryne Sandburg runs track for Muller High School. He can run 200 meters in 22 seconds. If he holds the same pace, how long should

irina [24]

Answer:

33 seconds

Step-by-step explanation:

200m/22sec. times 300m/x sec.

200x = 6600

200x/200 = x

6600/200 = 33

x = 33 seconds

4 0

3 years ago

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