3 years ago

Square 20cmx20xm

Mathematics

1 answer:

Oxana [17]3 years ago

3 0

Answer:

8,000

Step-by-step explanation:

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solve this word problem leading to quadratic equation: the area of a rectangle is 60cm². The length is 11cm more than the width.

morpeh [17]

Answer:

Step-by-step explanation:

let : x The length and y the width you have this system :

xy =60....(1)

x = y+10...(2)

put the value for x in (1): (y+10)y =60

the quadratic equation is : y² +10y - 60 = 0

Δ =b² - 4ac a = 1 b= 10 c= - 60

Δ =10² - 4(1)(-60) = 324 =18²

y 1 = (-10-18)/2 negatif...... refused

y 2 = (-10+18)/2 =4

the width is 4

8 0

2 years ago

If the simple interest on $7000 for 10 years is $6300, then what is the interest rate? I will pick branliest answer with the

Roman55 [17]

Answer:

0.09

Step-by-step explanation:

So if you use the Simple interest equation it will begin with:
Interest total = Initial Amount of money x Interest rate per year x Years money is invested for.

Then substitute the values you have been given so:

$6300 = 7000 x Interest rate per year x 10.

This is simplifies to 6300 = 70,000 x Annual Interest rate

You can rearrange this to find the annual interest rate by dividing by 70,000:
$\frac{6300}{70000} = Interest\ rate$

Simplifying this would be:
$\frac{63}{700}\\$ = Interest rate.

The interest rate is 0.09.

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1 year ago

Help pleaseee i don’t understand thisss

kotegsom [21]

Answer:

The answer is;

box A:3/2

box B:2/3

6 0

2 years ago

Can someone answer this really fast?

Vikki [24]

Answer:

Use your brain

Step-by-step explanation:

Because

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3 years ago

Read 2 more answers

Billy takes 2 hours to paint 500 pictures. Sandy takes 3 hours to paint 450 pictures. if they work together, how long would it t

SVETLANKA909090 [29]

Billy can do 4 hours which is 1000 pictures
and Sandy 3 1/15 hours 500 pictures and 1/15 is 50.
Let me know if I'm wrong
Hope this helps

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3 years ago