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3 years ago

Which best describes the solution for this equation 0.5(4x+3)=5x-2.5

Mathematics

2 answers:

Mrac [35]3 years ago

8 0

Answer:

Step-by-step explanation:

0.5(4x+3)=5x-2.5

0.5*4x + 0.5*3 = 5x - 2.5

2x + 1.5 = 5x - 2.5

2.5 + 1.5 = 5x - 2x

4 = 3x

3x = 4

x = 4/3 = 1 1/3

adelina 88 [10]3 years ago

3 0

Answer:

(—— • (4x + 3)) - (5x - —) = 0 10 2

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PLEASE HELP ASAP, I WILL GIVE BRAINLESSLY ANSWER SHOW WORK PLEASE

zhannawk [14.2K]

Answer:

C. $N(t)=150\cdot 3^t$

Step-by-step explanation:

You are given the exponential function $n(t)=ab^t.$

From the table, $N(t)=150$ at $t=0,$ thus

$N(0)=a\cdot b^0\\ \\150=a\cdot 1\ [\text{ because }b^0=1]$

Also $N(t)=450$ at $t=1,$ thus

$N(1)=a\cdot b^1=a\cdot b.$

Since $a=150,$ substitute it into the second equation

$450=150\cdot b\\ \\b=\dfrac{450}{150}\\ \\b=3$

and the expression for the exponential function is

$N(t)=150\cdot 3^t$

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3 years ago

Larissa practices for a swimming tournament

scoundrel [369]

Answer:

Larissa takes 59.141 seconds to complete both laps.

Step-by-step explanation:

The complete time is the sum of time taken on each lap. We translate the two statements into mathematical expressions to determine the required output:

(i) She completes her first lap in 31.135 seconds:

$x_{1} = 31.135\,s$

(ii) She completes her second lap 3.129 seconds faster than the first lap:

$x_{2} = x_{1}-3.129\,s$

$x_{2} = 31.135\,s - 3.129\,s$

$x_{2} = 28.006\,s$

Then, the time taken by Larissa to complete both laps is:

$\Delta x = x_{1} + x_{2}$

$\Delta x = 31.135\,s+28.006\,s$

$\Delta x = 59.141\,s$

Larissa takes 59.141 seconds to complete both laps.

4 0

3 years ago

The volume of a cube shaped box is 27 cubic centimeters . What is the height of the box

Bad White [126]

V(cube)=a³=27
a=3
height =3cm

6 0

3 years ago

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7 is 1/10 of what number

umka21 [38]

We should find the original number, 7 of 1/10. We divide the known number for the numerator, than multiply for denominator.

7 : 1 = 7 * 10 = 70 <- answer

So 7 is 1/10 of 70

We can check our work:

1/10 of 70 = 7?

70 : 10 = 7*1 = 7

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3 years ago

Question 1

Doss [256]

For the answer to the question If the distance from the plane (P) to the tower (T) is 5,000 ft., how far is the bird (B) from the plane (P)? The answer is 11,779 feet.
And for the answer to the second question on what is the angle of depression from the bird (B) to the observer (O)? The answer is 56.31°

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3 years ago

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