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2 years ago

Is 25x²-40xy+16y²a perfect square number? why?

Mathematics

1 answer:

Crank2 years ago

8 0

Answer:

yes

Step-by-step explanation:

25x² - 40xy + 16y² can be factored as

(5x - 4y)² ← a perfect square

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Find the distance between the points ( 19 , 16 ) and ( − 13, 10 )

Inessa [10]

Answer:

$\sqrt{1060}=32.55..... or 32.6$

Step-by-step explanation:

$\sqrt{(-13-19)^2+(10-16)^2}$

$\sqrt{(-32)^2+(-6)^2}$

$\sqrt{1024+36}$

$\sqrt{1060}=32.55..... or 32.6$

hope this helps

7 0

3 years ago

Suppose j varies jointly with g and v, and j=2 when g=4 and v=3. <br> Find j when g=8 and v=9.

vladimir2022 [97]

Answer:

$j=12$

Step-by-step explanation:

we know that

In a join variation, If j varies jointly with respect to g and v, the equation will be of the form $j = kgv$

where k is a constant

step 1

Find the value of k

we have

j=2,g=4,v=3

substitute and solve for k

$2 = k(4)(3)$

$2 = 12k$

$k=\frac{1}{6}$

The equation is equal to

$j=\frac{1}{6}gv$

step 2

Find the value of j when g=8,v=9

substitute the values in the equation and solve for j

$j=\frac{1}{6}(8)(9)$

$j=12$

3 0

3 years ago

the perimeter of rectangular garden is 64 centimeters .the length of garden is three times the width .find the lenght

kakasveta [241]

Answer:

length= 24cm

Step-by-step explanation:

interpreting the question

L=3w

perimeter=2(l+w)

64=2(3w+w)

64=2(4w)

64=8w, Divide both sides by 8

w= 8cm

since w= 8

L=3w

L=3×8

L=24cm

6 0

3 years ago

What is 25% of 140? 14 30 35 40

Semenov [28]

Here is the answer :

0.25 *140 = 35

3 0

3 years ago

Read 2 more answers

I dont know why it says im in high school im in middle school. But anyways can someone please explain how to get percentage.

tigry1 [53]

Answer:

Step-by-step explanation:

To change a decimal into a percent you multiply by 100.

If there is a fraction that you need to convert into a percent. Completely divide the fraction. 4/5 = 0.8 then multiply by 100 you get 80%. This means that 4 is 80% of 5

6 0

3 years ago

Read 2 more answers

Is 25x²-40xy+16y²a perfect square number? why?​

Is 25x²-40xy+16y²a perfect square number? why?