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Sergeeva-Olga [200]

3 years ago

6

18-20 please find the answer

2 answers:

Alisiya [41]3 years ago

6 0

-2 because since the top number is a positive number isn’t bigger than the negative number so it will be -2

NNADVOKAT [17]3 years ago

5 0

<h2>Answer: -2</h2><h2 /><h3>Step-by-step explanation: When subtracting positive numbers, count to the left. When subtracting negative numbers, count to the right.</h3>

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A square and an equilateral triangle have equal perimeters. the area of the triangle is

Ivenika [448]

a - length of side of a square

t - length of side of a triangle

The perimeter of a square: $P_S=4a$

The perimeter of a triangle: $P_T=3t$

We have the area of a triangle: $A_T=16\sqrt3\ cm^2$

The formula of an area of an equilateral trinagle: $A_T=\dfrac{t^2\sqrt3}{4}$

Substitute:

$\dfrac{t^2\sqrt3}{4}=16\sqrt3$ <em>multiply both sides by 4</em>

$t^2\sqrt3=64\sqrt3$ <em>divide both sides by $\sqrt3$ </em>

$t^2=64\to t=\sqrt{64}\to t=8\ cm$

The perimeter of a triangle: $P_T=3(8)=24\ cm$

Substitute to the formula of a perimeter of a square:

$4a=24$ <em>divide both sides by 4</em>

$a=6\ cm$

The formula of a diagonal of a square: $d=a\sqrt2$

Substitute:

$d=6\sqrt2\ cm$

3 0

3 years ago

When solving -1/8(x+35)=-7 , what is the correct sequence of operations

TiliK225 [7]

x= -623/18

Hope it helps for you,buddy!

6 0

3 years ago

Read 2 more answers

Marti is filling a 10– inch diameter ball with sand to make a medicine ball that can be used for exercising. To determine if the

Mice21 [21]

Answer:

Option A. $30\ pounds$

Step-by-step explanation:

step 1

Find the volume of the sphere ( medicine ball)

The volume is equal to

$V=\frac{4}{3}\pi r^{3}$

we have

$r=10/2=5\ in$ ----> the radius is half the diameter

Convert inches to feet

Remember that

1 ft=12 in

$r=5\ in=5/12\ ft$

assume

$\pi=3.14$

substitute

$V=\frac{4}{3}(3.14)(5/12)^{3}$

$V=0.3029\ ft^{3}$

step 2

Find the weight of the ball

Multiply the volume in cubic foot by 100

$0.3029*100=30.29\ pounds$

Round to the nearest pound

$30.29=30\ pounds$

6 0

3 years ago

The diagram shows a right-angled triangle.

Ratling [72]

Where is the diagram?

4 0

3 years ago

Can't get this one. Anyone know how to do it?

avanturin [10]

Function g takes 4 as input and return 2 as output
f takes input 2 and returns output 4
from the graph
g(4)=2
f(2)=4

7 0

3 years ago