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3 years ago

5

Please help me really need help in this math proplem

1 answer:

nadya68 [22]3 years ago

5 0

.h.i. i think i know the answer

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3. State if each statement is correct. If it is not correct, then fix the mistake.

olya-2409 [2.1K]

Answer:

All are incorrect

Step-by-step explanation:

Required

Determine which is correct or not

$(a)\ 2x * 2x = 4x$

This is incorrect because:

$2x * 2x = 2 * 2 * x*x$

$2x * 2x = 4x^2$ ---- fixed

$(b)\ 3x^3 * 3x^3 = 9x^9$

This is incorrect because:

$3x^3 * 3x^3 = 3 * 3 * x^3 * x^3$

$3x^3 * 3x^3 = 9x^(3+3)$

$3x^3 * 3x^3 = 9x^6$ ---- fixed

$(c)\ 4x(4x + 5) =8x + 5$

This is incorrect because:

$4x(4x + 5) =4x * 4x + 4x * 5$

$4x(4x + 5) =16x^2 + 20x$ ---- fixed

4 0

4 years ago

Which of the following is not in scientific notation?

SSSSS [86.1K]

Answer:

I believe the answer would be 61.2 x 10^4

Step-by-step explanation:

61.2 > 10

4 0

3 years ago

Damian is paid $1,980 monthly. What is his annual salary?

ZanzabumX [31]

Answer:

23,760.

Step-by-step explanation:

Multiply the monthly salary x 12 since there are 12 months

5 0

4 years ago

Read 2 more answers

Work out the area of this semicircle.Take pie to be 3.142 and give your answer to 2 decimal places 10cm

rosijanka [135]

Answer:

The area of the semi circle $A = 157.1 cm^2$

Step-by-step explanation:

<u><em>Explanation</em></u>:-

<em>Given radius of circle 'r' = 10 cm</em>

<em>The area of the circle formula </em>

<em> </em> $A = \pi (r)^{2}$ <em></em>

<em>The area of the semi circle formula </em>

$A = \frac{\pi (r)^{2} }{2}$

taking π =3.142

$A = 3.142 X \frac{(10)^2}{2}$

On calculation , we get

$A = 157.1 cm^2$

<u><em>Final answer</em></u>:-

<em>The area of the semi circle </em> $A = 157.1 cm^2$ <em></em>

7 0

3 years ago

One of the angles in a RIGHT TRIANGLE is 43 degrees.

lozanna [386]

47 degrees

Work:

90+43+x=180
133+x=180
-133 -133
———————
x= 47

6 0

3 years ago