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lakkis [162]
3 years ago
9

40 POINTS ANSWER QUICKLY PLEASEE

Mathematics
2 answers:
Sedaia [141]3 years ago
8 0
I is equal to the square root of -1
The square root of 25 is 5
So the answer is C
never [62]3 years ago
5 0

Hey!

\\Solution:\\\\\sqrt{-25} - 4\\\\Rule~of~radicals: \sqrt{-a} = \sqrt{-1} \sqrt{a} \\Apply: \sqrt{-25} - 4 = \sqrt{-1} \sqrt{25} - 4\\\\Rule~of~imaginary~numbers: i = \sqrt{-1} \\Apply: \sqrt{-1} \sqrt{25} - 4 = 5i - 4\\\\Answer:\\5i - 4\\\\Hope~This~Helped!~Good~Luck!

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Find the domain and range. state whether each set of ordered pairs is a function or not.
Gre4nikov [31]

Answer:

Set A is a function

set B is not a function

3 0
3 years ago
Need some help with number word problems, tysm if you do :)
lord [1]

Answer:

Read below

Step-by-step explanation:

<em>x is always the smaller number</em>

<em>y is always the larger number</em>

<u>underlined</u> means it's the question

bolded means it's the answer

<em>1. </em>

<u>One number is 6 times as large as another. Their sum is 42. Find the numbers.</u>

The numbers need to fit the criteria:

  • 6x=y
  • x+y=42

A. 6+36=42 (correct)

B. 7+42=49 (incorrect)

C. 7+35=42 (incorrect because it doesn't follow the 1st rule)

D. 6+42=48 (incorrect)

Only A. 6, 36 fits the criteria.

<em>2. </em>

<u>One number is 3 less than another. Four times the smaller is 4 more than 3 times the larger. Find the numbers.</u>

The numbers need to fit the criteria:

  • x+3=y
  • 4x-4=3y

A.

4+3=7

12-6≠21 (incorrect)

B.

7+3=10

28-3≠30 (incorrect)

C.

13+3=16

52-4=48 (correct)

D.

9+3≠13 (incorrect)

Only C. 13, 16 fits the criteria.

<em>3. </em>

<u>One number is 4 less than another. Five times the smaller is 3 less than 4 times the larger. Find the numbers.</u>

The numbers need to fit the criteria:

  • x+4=y
  • 5x+3=4y

A.

13+4=17

65+3=68 (correct)

B.

-23+4= -19

-115+3≠ -76 (incorrect)

C.

17+4=21

85+3≠84 (incorrect)

D.

-11+4+ -7

-35+3≠ -33 (incorrect)

Only A. 13, 17 fits the criteria.

<em>4.</em>

<u>The sum of two numbers is 23. When three times the smaller is subtracted from the larger, the result is 3. Find the numbers.</u>

The numbers need to fit the criteria:

  • x+y=23
  • y-3x=3

A.

5+18=23

18-15=3 (correct)

B.

8+15=23

15-24≠3 (incorrect)

C.

-13+36=23

36+39≠3 (incorrect)

D.

-5+28=23

28+15≠3 (incorrect)

Only A. 5, 18 fits the criteria.

<em>5.</em>

<u>The sum of two numbers is 26. When twice the smaller is subtracted from the larger, the result is 2. Find the numbers.</u>

The numbers need to fit the criteria:

  • x+y=26
  • y-2x=2

A.

8+18=26

18-16=2 (correct)

B.

9+17=26

17-18≠2 (incorrect)

C.

7+19=26

19-14≠2 (incorrect)

D.

6+20=26

20-12≠2 (incorrect)

Only A. 8, 18 fits the criteria.

4 0
4 years ago
I know Im asking a lot but HELPPPP
Free_Kalibri [48]

Answer:

n=36-19

n=15

Step-by-step explanation:

:-)

4 0
3 years ago
Simplify the ratio<br> 2kg : 8kg
lora16 [44]
Answer: 1kg: 4kg

Calculation/Explanation:
Divide both sides of the ratio by "2" It now is 1kg:4kg
5 0
4 years ago
Read 2 more answers
The temperature changes can be represented by the expression -0.5( 1 -2h).Chase says that the temperature change can also be rep
UNO [17]

Answer:

The expression are equivalent

Step-by-step explanation:

The question requests that we show whether the equation -0.5( 1 -2h) is equivalent to 4(2h + 2) - 7h - 8.5 or not :

Simplifying 4(2h + 2) - 7h - 8.5 ; we have ;

4(2h + 2) - 7h - 8.5

8h + 8 - 7h - 8.5

8h - 7h + 8 - 8.5

h - 0.5

-0.5(1 - 2h)

-0.5 + h

= h - 0.5

Hence, both expressions are the same

3 0
3 years ago
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