Estimated the sum. 523+295

Answers

Answer 1

Answer: The answer is 820 (520+300)

Answer 2

Answer: the estimated sum is 800 because 523 can be rounded to 500 and 295 can be rounded to 300 and 500+300=800.

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What the circumference of the base?

Answers

The formula for the circumference of a circle is:

C = 2πr

The radius (r) is half of the diameter, so to find the radius just divide the diameter by two...

radius = 20 ÷ 2

radius (r) = 10 m

Plug in what you know into the formula for the circumference:

C = 2π(10)

C = 20π

The exact circumference is: 20π m

The approximate circumference is: 63 m

Hope this helped!

~Just a girl in love with Shawn Mendes

Answer:

c=2piR would be the equation

Step-by-step explanation:

X ^3 + 6x^2 +12x+8 ÷(x+2)

Answers

x^2+4x+4 and there is no remainder

Answer:

you cant solve it, since we need and = sign and other numbers on that side,

but you can simplify it to (x^2+4x+4)

Step-by-step explanation:

x^3+6x^2+12x+8/x+2

=(x+2)(x+2)(x+2)/x+2

=x^2+4x+4, since you cancel out one of the numerators(x+2) with the denominator

Write each expression as the product of two factors 1x3+7x3=

Answers

3+21= 25 is ur answer

Answer:it is 24

Step-by-step explanation:

idk how to explain i used a calculater

The coordinates of the vertices of a polygon are (-2, 1). (-3, 3), (-1, 5), (2, 4), and (2, 1). What is the perimeter of the polygon to the nearest tenth of a unit. Do not label your answer. Answer with a number only.

Answers

Answer:

$15.2\ units$

Step-by-step explanation:

step 1

Plot the vertices of the polygon to better understand the problem

we have

$A(-2, 1). B(-3, 3), C(-1, 5), D(2, 4),E(2, 1)$

using a graphing tool

The polygon is a pentagon (the number of sides is 5)

see the attached figure

The perimeter is equal to

$P=AB+BC+CD+DE+AE$

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^(2)+(x2-x1)^(2)}$

step 2

Find the distance AB

$A(-2, 1). B(-3, 3)$

substitute in the formula

$d=\sqrt{(3-1)^(2)+(-3+2)^(2)}$

$d=\sqrt{(2)^(2)+(-1)^(2)}$

$d_A_B=√(5)=2.24\ units$

step 3

Find the distance BC

$B(-3, 3), C(-1, 5)$

substitute in the formula

$d=\sqrt{(5-3)^(2)+(-1+3)^(2)}$

$d=\sqrt{(2)^(2)+(2)^(2)}$

$d_B_C=√(8)=2.83\ units$

step 4

Find the distance CD

$C(-1, 5), D(2, 4)$

substitute in the formula

$d=\sqrt{(4-5)^(2)+(2+1)^(2)}$

$d=\sqrt{(-1)^(2)+(3)^(2)}$

$d_C_D=√(10)=3.16\ units$

step 5

Find the distance DE

$D(2, 4),E(2, 1)$

substitute in the formula

$d=\sqrt{(1-4)^(2)+(2-2)^(2)}$

$d=\sqrt{(-3)^(2)+(0)^(2)}$

$d_D_E=√(9)\ units$

$d_D_E=3\ units$

step 6

Find the distance AE

$A(-2, 1).E(2, 1)$

substitute in the formula

$d=\sqrt{(1-1)^(2)+(2+2)^(2)}$

$d=\sqrt{(0)^(2)+(4)^(2)}$

$d_A_E=√(16)\ units$

$d_A_E=4\ units$

step 7

Find the perimeter

$P=AB+BC+CD+DE+AE$

substitute the values

$P=2.24+2.83+3.16+3+4=15.23\ units$

Round to the nearest tenth of a unit

$P=15.2\ units$

What is (x-5) (x+5)?

Answers

$(x-5)(x+5)\nFOIL\ Method\n\nFirst \nx*x=x^2\n\nOutside\nx*5=5x\n\nInside\n-5*x=-5x\n\nLast\n-5*5=-25 \n\n Combine\ like\ terms.\n\n-5x+5x=0x\n\nCombine\ together\n\nx^2-25$

Hope this helped :)

$(x-5) (x+5)=x\cdot x+5\cdot x-5\cdot x-5\cdot5=x^2+5x-5x-25=\n \n=x^2-25$

Can someone help me please!!!!!1.Grace and Allie are going to meet at the fountain near their houses.They both leave their houses at the same time. Allie passes Grace's house on her way to the fountain.
* Allie's walking rate is 2 meters per second.,* Grace's walking rate is 1.5 meters per second.
A-How many seconds will it take Allie to reach the fountain.
b-Suppose Grace's house is 90 meters from the fountain. Who will reach the fountain first,Allie or Grace explain why.

Answers

Well, if the fountain is 90 meters from the fountain, to find Allie's distance, simply divide 2 by 90.
90/2 = 45

It will take Allie about 45 seconds to reach the fountain.

Obviously, Allie will reach the fountain first because she is walking more meters per second.

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