MATHEMATICS HIGH SCHOOL

If u spenpend 20 minutes a night doing homework how many seconds

Answers

Answer 1

Answer:

Answer:

1200 seconds per 20 minute study session

Step-by-step explanation:

20 min x 60 sec = 1200 seconds

Answer 2

Answer:

Answer:1,200 secs

Step-by-step explanation:

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a rectangular garden has dimensions of 100 feet by 10, next season, the garden decreased to 2/5 of its size. what is the scale of the drawing for the new garden

Answers

Answer: 40 ft by 4 ft

Step-by-step explanation:

See attached picture

How do you write this in standard form? (6-7i)/(1-2i)

Answers

$\frac { \left( 6-7i \right) }{ \left( 1-2i \right) } \cdot 1\n \n =\frac { \left( 6-7i \right) }{ \left( 1-2i \right) } \cdot \frac { \left( 1+2i \right) }{ \left( 1+2i \right) } \n \n =\frac { 6+12i-7i-14{ i }^( 2 ) }{ 1+2i-2i-4{ i }^( 2 ) }$

$\n \n =\frac { 6+5i-14\left( -1 \right) }{ 1-4\left( -1 \right) } \n \n =\frac { 6+5i+14 }{ 1+4 } \n \n =\frac { 20+5i }{ 5 } \n \n =\frac { 20 }{ 5 } +\frac { 5i }{ 5 } \n \n =4+i$

What's substitution for y=4x-1;y=2x-5

Answers

y=4x−1;y=2x−5
Step: Solve y=4x−1 for y:
Step: Substitute 4x−1 for y in y=2x−5:
y=2x−5
4x−1=2x−5
4x−1+−2x=2x−5+−2x(Add -2x to both sides)
2x−1=−5
2x−1+1=−5+1(Add 1 to both sides)
2x=−4
2x/2=−4/2(Divide both sides by 2)
x=−2
Step: Substitute−2 for x in y=4x−1:
y=4x−1
y=(4)(−2)−1
y=−9(Simplify both sides of the equation)
Answer:y=−9 and x=−2

4. A couple has 4 children. What is the probability that they have at least 2 girls?

Answers

6/16 or 3/8 unless you mean percentage

Every prime number greater than 10 has a digit in the ones place that is include in wich set of numbers A- 1,3,7,9 B-1,3,5,9 D-1,3,7

Answers

That's very interesting. I had never thought about it before.
Let's look through all of the ten possible digits in that place,
and see what we can tell:

-- 0:
   A number greater than 10 with a 0 in the units place is a multiple of
   either 5 or 10, so it's not a prime number.

-- 1:
    A number greater than 10 with a 1 in the units place could be
    a prime (11, 31 etc.) but it doesn't have to be (21, 51).

-- 2:
   A number greater than 10 with a 2 in the units place has 2 as a factor
   (it's an even number), so it's not a prime number.

-- 3:
   A number greater than 10 with a 3 in the units place could be
   a prime (13, 23 etc.) but it doesn't have to be (33, 63) .

-- 4:
   A number greater than 10 with a 4 in the units place is an even
   number, and has 2 as a factor, so it's not a prime number.

-- 5:
   A number greater than 10 with a 5 in the units place is a multiple
   of either 5 or 10, so it's not a prime number.

-- 6:
   A number greater than 10 with a 6 in the units place is an even
   number, and has 2 as a factor, so it's not a prime number.

-- 7:
   A number greater than 10 with a 7 in the units place could be
   a prime (17, 37 etc.) but it doesn't have to be (27, 57) .

-- 8:
   A number greater than 10 with a 8 in the units place is an even
   number, and has 2 as a factor, so it's not a prime number.

-- 9:
   A number greater than 10 with a 9 in the units place could be
   a prime (19, 29 etc.) but it doesn't have to be (39, 69) .

So a number greater than 10 that IS a prime number COULD have
any of the digits 1, 3, 7, or 9 in its units place.

It CAN't have a 0, 2, 4, 5, 6, or 8 .

The only choice that includes all of the possibilities is 'A' .

Solve for x
64°
Х
45°

Answers

Answer:

x = 109

Step-by-step explanation:

64 + 45 = 109

180 - 109 = 71

180 - 71 = 109

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