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valentinak56 [21]

3 years ago

12

7) Find the distance between the points B(-2, 14) and C(3, 8) to the nearest tenth.

1 answer:

RoseWind [281]3 years ago

8 0

$\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ B(\stackrel{x_1}{-2}~,~\stackrel{y_1}{14})\qquad C(\stackrel{x_2}{3}~,~\stackrel{y_2}{8})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ BC=\sqrt{[3-(-2)]^2+[8-14]^2}\implies BC=\sqrt{(3+2)^2+(8-14)^2} \\\\\\ BC=\sqrt{25+36}\implies BC=\sqrt{61}\implies \stackrel{\textit{rounded up}}{BC=7.8}$

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Pls help, will mark brainliest

SashulF [63]

Step-by-step explanation:

$\frac{\pi}{2} = 90$

its 1/4 of the circle

circle circumference:

$8 \times \pi$

we need 1/4 of it, so its

$2 \times \pi = 6.28$

5 0

3 years ago

Bryan wants to purchase a skateboard. He has $50 to spend. he finds one that regularly sells for $70.00 and is on sale for 40% o

Maksim231197 [3]

Bryan has enough to buy skateboard as it will cost $44.94

Step-by-step explanation:

Original price = $70.00

Discount = 40%

Amount of discount = 40% of original price

Amount of discount = $\frac{40}{100}*70$

Amount of discount = $\frac{2800}{100}$

Amount of discount = $28

Price after discount = Original price - amount of discount

$Price\ after\ discount=70-28 = $42\\$

Sales tax = 7% = $\frac{7}{100} = 0.07$

Sales tax amount = Price after discount (0.07)

$Sales\ tax\ amount= 42(0.07) = $2.94\\$

Price of skateboard = Price after discount + sales tax

Price of skateboard = 42+2.94 = $44.94

Bryan has enough to buy skateboard as it will cost $44.94

Keywords: sales tax, subtraction

Learn more about subtraction at:

#LearnwithBrainly

5 0

3 years ago

Pleaseee help me....what will the y-coordinate of b' if ab is dilated by a factor of 2/5, centered at the origin. A=(2,2) B=(10,

sdas [7]

Answer:

The y-coordinate of B' is equal to 2

Step-by-step explanation:

step 1

Find the distance of AB

$AB=10-2=8\ units$

step 2

Find the length of A'B'

Multiply the length of AB by the scale factor

$A'B'=8*\frac{2}{5}= 3.2\ units$

step 3

Find the midpoint AB

$M=(\frac{2+10}{2},\frac{2+2}{2} )$

$M=(6,2)$

step 4

<em>Find the x-coordinate of B'</em>

The x-coordinate of B' is equal to the x-coordinate of midpoint plus the semi distance A'B'

$6+\frac{3.2}{2}=6+1.6=7.6$

<em>Find the y-coordinate of B'</em>

The y-coordinate of B' is equal to 2 (because is a horizontal line)

3 0

4 years ago

Read 2 more answers

Question is down below

mr Goodwill [35]

The correct answer would be B.

7 0

4 years ago

Read 2 more answers

Graph (x+2)^2+y^2=100

LenaWriter [7]

Answer:

circle of radius 10 centered at (-2, 0)

Step-by-step explanation:

The equation is of the form ...

(x -h)^2 +(y -k)^2 = r^2

with (h, k) = (-2, 0) and r=10.

This is the standard form of the equation of a circle with radius r centered at (h, k).

See the attached for a graph.

3 0

3 years ago