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Delicious77 [7]
3 years ago
15

Find the sum of (x²+3xy+y²)+(x³+3x²y+2xy²+y³)​

Mathematics
1 answer:
victus00 [196]3 years ago
5 0
X
3
+
3
x
2
y
+
2
x
y
2
+
y
3
+
x
2
+
3
x
y
+
y
2
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The diagonal of a square is 8 cm.
VladimirAG [237]

the length of the side of this square is 4\sqrt{2} \:or \:5.65cm

Answer:

Solutions Given:

let diagonal of square be AC: 8 cm

let each side be a.

As diagonal bisect square.

let it forms right angled triangle ABC .

Where diagonal AC is hypotenuse and a is their opposite side and base.

By using Pythagoras law

hypotenuse ²=opposite side²+base side²

8²=a²+a²

64=2a²

a²=\frac{64}{2}

a²=32

doing square root on both side

\sqrt{a²}=\sqrt{32}

a=±\sqrt{2*2*2*2*2}

a=±2*2\sqrt{2}

Since side of square is always positive so

a=4\sqrt{2} or 5.65 cm

6 0
2 years ago
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Triangle ABC has side lengths:
Nat2105 [25]
ABC and HJK are congruent and the corresponding sides and angles are equal. Side HJ is congruent with side AB so HJ is also 3.5cm in length.
8 0
3 years ago
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Please help me with all thank you
crimeas [40]
1. 7 : 07
2. 9 : 45
3. 6
4. 2 : 25
5. 8
6. 17
5 0
3 years ago
17) Convert the number to scientific notation 0.00317
Masteriza [31]

Answer:

3.17x10^-3

Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the  

10. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

6 0
3 years ago
If the temperature is -17° F at 8 am, and 23°F at noon, how much did the temperature rise?
dedylja [7]
17 + 23 = 40

The temperature rose 40 degrees.
3 0
3 years ago
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