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Anettt [7]
2 years ago
10

Please help!!! And Please PLEASE write a detailed explanation of how you got your answer, not just the answer!!!! Brainliest WIL

L be included for the BEST and most ACCURATE answer!!! Thank You!!!

Mathematics
2 answers:
Norma-Jean [14]2 years ago
8 0
I think it would be the first option

Adding up the lengths of the exposed sides of the square would give you 40. You do not count the sides of the square in the middle because it's being covered by the 2 half circles.

We can use the 2 squares to measure the half circles. Since the circles cover 2 sides of the square, the circle is 20 units long on the flat side. To find the perimeter of the curves, you would at Pi into the equation.
GuDViN [60]2 years ago
6 0
A I did the quiz hopefully this helps
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Pleeeeese help me as fast as you can!!!
Aleonysh [2.5K]

Answer:

A. y=3x-10

C. y+6=3(x-15)

Step-by-step explanation:

Given:

The given line is 6x+18y=5

Express this in slope-intercept form y=mx+b, where m is the slope and b is the y-intercept.

6x+18y=5\\18y=-6x+5\\y=-\frac{6}{18}x+\frac{5}{18}\\y=-\frac{1}{3}x+\frac{5}{18}

Therefore, the slope of the line is m=-\frac{1}{3}.

Now, for perpendicular lines, the product of their slopes is equal to -1.

Let us find the slopes of each lines.

Option A:

y=3x-10

On comparing with the slope-intercept form, we get slope as  m_{A}=3.

Now, m\times m_{A}=-\frac{1}{3}\times 3=-1. So, option A is perpendicular to the given line.

Option B:

For lines of the form x=a, where, a is a constant, the slope is undefined. So, option B is incorrect.

Option C:

On comparing with the slope-point form, we get slope as  m_{C}=3.

Now, m\times m_{C}=-\frac{1}{3}\times 3=-1. So, option C is perpendicular to the given line.

Option D:

3x+9y=8\\9y=-3x+8\\y=-\frac{3}{9}x+\frac{8}{9}\\y=-\frac{1}{3}x+\frac{8}{9}

On comparing with the slope-intercept form, we get slope as  m_{D}=-\frac{1}{3}.

Now, m\times m_{D}=-\frac{1}{3}\times -\frac{1}{3}=\frac{1}{9}. So, option D is not perpendicular to the given line.

8 0
3 years ago
I will add you as BRAINLIEST if you can get it right! Someone Plz help!!!
Eva8 [605]

Find the ratio of the similar known sides:

1.34/2 = 0.67

The smaller triangle is 0.67 the size of the larger one.

Multiply the similar sides by the ratio:

DE = 4 x 0.67 = 2.68

FE = 3 x 0.67 = 2.01

3 0
3 years ago
I need help please............
Anettt [7]
A) x=4
B) x= -3
C) x= -1/6
D) x=24
5 0
3 years ago
Look at pic 10 pts will mark brainilest tell me if u need multiple choice answers
stealth61 [152]

Answer:

Step-by-step explanation:

1/2 b*h *2

1/2 * 14*24*2= 336

The base l*w

10*14= 140

Sides l*w

25*10*2= 500

500+140+336=976

8 0
2 years ago
Frank invests $1,000 in simple interest investment account that pays 8% a year. After a number of years, he withdraws his balanc
elena-s [515]

Answer:

15 years

Step-by-step explanation:

Given data

P=$1,000

R=8%

A= $2200

I= A-P

I=2200-1000

I=$1200

Applying the formula

I=PRT/100

1200=1000*8*T/100

cross multiply

1200*100= 8000T

120000= 8000T

divide both sides by 8000

T=120000/8000

T=15  years

Hence the time is 15 years

6 0
2 years ago
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