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3 years ago

7.5 x 10^-4 write in scientific notation and standard ALOT OF POINTS

2 answers:

8 0

$ANSWER:\\0.00075\\HOPE\\IT\\HELPS!\\MARK\\BRAINLIEST\\IF\\IT\\DOES\\I\\WILL\\BE\\JOYFUL! :)\\I\\LOVE\\HELPING\\OTHERS!$ $The$ $exponent$ is negative; the number is small.

Mars2501 [29]3 years ago

8 0

Answer:

the answer is

0.00075

hope this helps you

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A circular garden has a radius of 3 meters. What is the area of the garden? Write your answer using π. Show your work.

Gwar [14]

Answer: 9 $\pi$

Step-by-step explanation:

Sorry the pi sign looks weird. The formula for area of a circle is $a=\pi r^2$ , so we have to substitute the radius with 3. The square of 3 is 9, so the answer is 9pi.

7 0

3 years ago

Mr. Martin's math test, which is worth 100 points, has 35

AlekseyPX

Number of questions worth 5 points = 10

Number of questions worth 2 points = 25

Further explanation:

The given system is a system of linear equations in two variables.

We will use the subsitution method to solve the system

Given equations are:

$x+y=35\\5x+2y=100$

From equation no 1:

$x+y=35\\x=35-y$

Putting x=35-y in second equation

$5x+2y=100\\5(35-y)+2y=100\\175-5y+2y=100\\-3y=100-175\\-3y=-75\\\frac{-3y}{-3}=\frac{-75}{-3}\\y=25\\Putting y=25 in first equation\\x+25=35\\x= 35-25\\x=10$

Hence,

Number of questions worth 5 points = 10

Number of questions worth 2 points = 25

Keywords: Linear Equations, Substitution method

Learn more about substitution method at:

#LearnwithBrainly

3 0

3 years ago

Read 2 more answers

What’s the inverse of f(x) = x + 2 ?

ArbitrLikvidat [17]

Answer:

Step-by-step explanation:

f(x) = x + 2.....change f(x) to y

y = x + 2....now switch x and y and solve for y

x = y + 2

x - 2 = y....change y to f-1(x)...represents an inverse

f-1(x) = x - 2 <== ur inverse

4 0

3 years ago

Read 2 more answers

Given a point A(-2,5), find the coordinates of a point B so that the line segment AB has each slope.

Kaylis [27]

Step-by-step explanation:

I understand this that we need to find a point B for each of a) to f).

remember, the slope is the (y coordinate difference / x coordinate difference) when going from one point on the line to the other.

the slope 2/3 means that when going to B x has to increase by 3, and y has to increase by 2.

so, B = (-2 + 3, 5 + 2) = (1, 7)

-2/3 means that either x or y have to decrease and the other to increase.

e.g. x increases by 3, y decreases by 2.

so, B = (-2 + 3, 5 - 2) = (1, 3)

4 stands for 4/1.

so, x increases by 1, y increases by 4.

B = (-2 + 1, 5 + 4) = (-1, 9)

similar to c) -3 stands for -3/1.

and similar to b) either x or y has to decrease and the other to increase.

e.g. x increases by 1, y decreases by 3.

B = (-2 + 1, 5 - 3) = (-1, 2)

that means the y difference is 0. B has the same y coordinate.

e.g. B = (3, 5)

x can be any value.

the line is a horizontal line going through y = 5 or (0, 5) on the y-axis.

that means the x difference is 0. B has the same x coordinate.

e.g. B = (-2, 9)

y can be any value.

the line is a vertical line going through x = -2 or (-2, 0) on the x-axis.

8 0

1 year ago

Of the 240 available seats for a concert, 63 seats were reserved. What fraction of seats was reserved? Write your answer in simp

Olin [163]

63/240 seats or 21/80
The greatest common denominator is 3, so you would divide both by 3.

6 0

3 years ago