Ask question

Ask question

All categories

3 years ago

6

Help help help help help

1 answer:

Semenov [28]3 years ago

4 0

Your answers are a and d hope this helps

You might be interested in

The product of two number is 20 and the sum of square is 41 find the number

Marianna [84]

Let the two number is a and b

so,

product =ab=20

sum of square= $\bold{a^2+b^2=41 }$

Then,

$\bold{(a+b)^2=a^2+b^2+2ab }$

$\bold{ (a+b)^2=41+2×40 }$

$\bold{ (a+b)^2=81 }$

$\bold{a+b=\sqrt{81} }$

$\bold{a+b=9 }$ •••••••••(equation I)

Now,

$\bold{(a-b)^2=a^2+b^2-4ab }$

$\bold{ (a-b)^2=41-4×20 }$

$\bold{(a-b)^2=41-40 }$

$\bold{a-b=\sqrt{1} }$

$\bold{a-b=1 }$ ••••••••(equation II)

Now,combine the equation I and equation II

we,get

$\bold{a+b+a-b=9+1 }$

$\bold{a+\cancel{b}+a\cancel{-b}=10 }$

$\bold{ 2a=10 }$

$\bold{a=\dfrac{10}{2} }$

$\blue{\boxed{ a=5 }}$

Then,

put the value of a in equation II.

we get that,

$\bold{5-b=1 }$

$\bold{b+1=5 }$

$\bold{b=5-1 }$

$\bold{\boxed{\blue{b=4}} }$

<em><u>so</u></em><em><u>,</u></em><em><u> </u></em>

<em><u>The</u></em><em><u> </u></em><em><u>two</u></em><em><u> </u></em><em><u>number</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u> </u></em><em><u>5</u></em><em><u> </u></em><em><u>and</u></em><em><u> </u></em><em><u>4</u></em><em><u>.</u></em>

6 0

2 years ago

Read 2 more answers

Use the slope formula to find the slope of the line through the points (1, -2) and (-2,8).

lys-0071 [83]

Answer:

Step-by-step explanation:

(8 + 2)/(-2 - 1)= -10/3

6 0

3 years ago

What is the answer for this problem: 8540 X 6789

icang [17]

The answer is 57,978,060

4 0

2 years ago

Read 2 more answers

Anybody help please hm

77julia77 [94]

Answer:

1

Step-by-step explanation:

if you use a calculator, it will come up as 1. I don't know why, but it does.

Hope this helps!

5 0

1 year ago

Find the absolute value of a-b-c^2 when a=4, b=-3, and c=10

VashaNatasha [74]

Answer:

93

Explanation:

4-(-3)-10^2

4+3-100

7-100

-93

Find the absolute value......

so therefore

|-93|=93

6 0

2 years ago

Read 2 more answers