2 years ago

A = 4r^2 solve for r2

Mathematics

1 answer:

Llana [10]2 years ago

4 0

Not sure what you mean by solve for r^2 but a/4=r^2 if u wanna go further r=(a/4)^1/2

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How many unique triangles can be drawn with given side lengths of 8 inches, 10.3 inches, and 13 inches?

REY [17]

Answer: 1

Step-by-step explanation: There can only be one triangle like that!

4 0

2 years ago

Read 2 more answers

Easy Points if you know math. Please help, question attached in picture.

blagie [28]

Answer:

y = 1/2x +6

Step-by-step explanation:

We have a point and a slope. Therefore we can use the point slope form to create a line

y-y1 = m(x-x1)

y-5 = 1/2(x--2)

y-5 = 1/2(x+2)

Distribute the 1/2

y-5 = 1/2x +1

Add 5 to each side

y-5+5 = 1/2x +1+5

y = 1/2x +6

This is in slope intercept form

6 0

2 years ago

Im just gonna waste my points. first to comment gets the points I guess.

Aliun [14]

Answer:

Hey

Step-by-step explanation:

8 0

3 years ago

Dana saved 450 for food for her upcoming vacation. The breakfast was included with their hotel, but lunch and dinner are not. Wh

zzz [600]

Answer:

$10d + 40r \leq 450$

Step-by-step explanation:

Given

$Savings = 450$

$Dana\ Cooks, d = 10$

$Restaurant, r = 40$

Required

Represent this as an inequality

When Dana cooks;

$Cost\ per\ meal = 10$

$Cost\ per\ d\ meals = d * 10$

$Cost\ per\ d\ meals = 10d$

At Restaurant

$Cost\ per\ meal = 40$

$Cost\ per\ r\ meals = 40 * r$

$Cost\ per\ r\ meals = 40 r$

Add these two results:

$Result = 10d + 40r$

<em>To represent as an inequality, the above result must be less than or equal to Dana's total savings</em>

i.e.

$10d + 40r \leq 450$

3 0

3 years ago

Round up to the nearest hundredth

Shalnov [3]

$x^2+3x-5=0\\\\a=1;\ b=3;\ c=-5\\\\b^2-4ac=3^2-4\cdot1\cdot(-5)=9+20=29\\\\x_1=\dfrac{-b-\sqrt{b^2-4ac}}{2a};\ x_2=\dfrac{-b+\sqrt{b^2-4ac}}{2a}\\\\x_1=\dfrac{-3-\sqrt{29}}{2\cdot1}=\dfrac{-3-\sqrt{29}}{2}\approx-4.19\\\\x_2=\dfrac{-3+\sqrt{29}}{2\cdot1}=\dfrac{-3+\sqrt{29}}{2}\approx1.19$

5 0

3 years ago