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3 years ago

Will give brainliest answer

Mathematics

1 answer:

Yakvenalex [24]3 years ago

5 0

Answer:

90 minuets

Step-by-step explanation:

Just some maths

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Solve the simultaneous equations C^2+d^2=5 and 3c+4d=2

Naily [24]

If 3c+4d=2 then c=(2-4d)/3
And if you put that into the other equation
${\frac{2 - 4d}{3}}^{2} + {d}^{2} = 5$
Then you multiply everything by 3, getting

${(2 - 4d)}^{2} + 3 {d}^{2} = 15$
And then

$2 - 4d + \sqrt{3} d = \sqrt{15}$
Leaving
$d( \sqrt{3} - 4) = \sqrt{15} - 2$
I dont have a calc with me right now but you just pot this into the calculator:
$d = \frac{ \sqrt{15} - 2 }{ \sqrt{3} - 4}$
And when you get the number you insert it into the nest eqation to get c

$c = \frac{2 - 4d}{3}$
So basically

$c = \frac{2 - 4 \frac{ \sqrt{15} - 2}{ \sqrt{3} - 4} }{3}$

6 0

3 years ago

Read 2 more answers

The line y=−3x+4

Olegator [25]

Answer: -3

Explanation:
This equation is called slope-intercept form the line you put in has the slope and y-intercept in it, whatever number is in front of x is the slope, this equations slope is -3.

5 0

3 years ago

-3(4 -2y) = 24

Zinaida [17]

-3(4-2y)=24
distribute the -3
-12+6y=24
add 12 to both sides
6y=36
divide 6 on both sides
y=6

6 0

4 years ago

Read 2 more answers

What is the length of the diagonal of a TV that measures 2.25 feet high and 4 feet wide?

NikAS [45]

Answer: Rounded, the diagonal is 4.6 feet

Step-by-step explanation: Use the Pythagorean Theorem: c² = a² + b²

Then take the square root of c² to find the length

2.25² =5.0625 This is a²

4² = 16 This is b² Add a² + b² to get c²

5.o625 + 16 = 21.0625 This is c²

√21.0625 = 4.589389938 This is the square root.

Round this to common measurements or "significant digits" 4.6 feet.

6 0

3 years ago

I need help taking quiz !

Firlakuza [10]

Answer:

3,4,5,6,7

Step-by-step explanation:

thats the anwser

4 0

3 years ago