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3 years ago

Correct answer will get brainliest :)

Mathematics

1 answer:

klasskru [66]3 years ago

5 0

<h2><em><u>Answer:</u></em></h2>

<h2><em><u>omg I brilliant but I won't say the answer lol I don't know why</u></em></h2>

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Slove for the variable<br> 2a-5=5a+23

Lyrx [107]

Answer:

$a = 9 \frac{1}{3}$

Step-by-step explanation:

$2a - 5 = 5a + 23 \\ 2a - 5a = 23 + 5 \\ - 3a = 28 \\ \frac{ - 3a}{ - 3} = \frac{28}{ - 3} \\ a = 9 \frac{1}{3}$

3 0

3 years ago

What is the midpoint between the following two points

qwelly [4]

Answer:

B, (6,0)

Take the average of the x values and the average of the y values:

(3+9)/2 = 6

(-2+2)/2 = 0

This means the answer (the average (midpoint) of the two points) is (6,0)

5 0

4 years ago

Solve the system of linear equations by substitution.

lakkis [162]

Answer: (6,2)

Step-by-step explanation:

Replace all occurrences of

y with 2x−10 in each equation.

−x+20=14

y=2x−10

Solve for x in the first equation.

x=6y=2x−10

Replace all occurrences of x with 6 in each equation.

y=2x=6

(6,2)

Point Form:

(6,2)

Equation Form:

x=6,y=2

3 0

3 years ago

A circle's radius that has an initial radius of 0 cm is increasing at a constant rate of 5 cm per second.

djyliett [7]

Answer:

a) $r(t)=5t$

b) $A=\pi\cdot r^2$

c) $A=\pi\cdot (5t)^2$

d) $A=25\pi t^2$

Step-by-step explanation:

We know that the circle is increasing its radio from an initial state of r=0 cm, at a rate of 5 cm/s.

This can be expressed as:

$r(0)=0\\\\dr/dt=5\\\\r(t)=r(0)+dr/dt\cdot t=0+5t\\\\r(t)=5t$

a) Radius of the circle, r (in cm), in terms of the number of seconds, t since the circle started growing:

$r(t)=5t$

b) Area of the circle, A (in square cm), in terms of the circle's radius, r (in cm):

$A=\pi\cdot r^2$

c) Circle's area, A (in square cm), in terms of the number of seconds, t, since the circle started growing:

$A=\pi\cdot r^2\\\\A=\pi\cdot (5t)^2$

d) Expanded form for the area A:

$A=\pi\cdot (5t)^2=25\pi\cdot t^2$

3 0

3 years ago

Ferris started to bike the 4 1/3 miles to school. After 3/5 mile, he stoppedto talk to a friend. How mush farther did he have to

Margarita [4]

Answer:

3 11/15 miles

Step-by-step explanation:

4 1/3 - 3/5

4 5/15 - 9/15

3 20/15 - 9/15

3 11/15 miles

5 0

3 years ago