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san4es73 [151]
2 years ago
14

What is the value of 1/2 x3 + 3.4y when x = 2 and y = 5 Thanks

Mathematics
2 answers:
joja [24]2 years ago
6 0
I believe it's 19.5.
balandron [24]2 years ago
4 0
All you have to do is plug the answers in the equation, but the answer is 20!
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As an estimation we are told 5 miles is 8 km. <br> Convert 30 miles to km.
sergeinik [125]

Answer:

48km

5miles = 8km

×6 = ×6

30miles= 48km

6 0
3 years ago
Im lost please help me
zepelin [54]
Let C = the Chinese books.
Let E = the English language books.

C = 4/5 E

E - 300 = C - 180 Notice how you get this equation. You take 300 away from the English books and 180 from the Chinese and according to the question, you get an equal number of both. Put c = 4/5E into the second equation.

E - 300 = 4/5 E - 180 Add 300 to both sides.
E = 4/5 E - 180 + 300
E = 4/5 E + 120 Now subtract 4/5 E from both sidies.
E - 4/5 E = 120
1/5 E = 120 Now multiply by 5
E = 120 * 5
E = 600

So the number of books are
600 written in English
4/5 of 600 = 2400 /5 = 480 Chinese books.

English 600
Chinese 480
6 0
3 years ago
Triangle ABC has been reflected over the x-axis to create triangle A'B'C'. Which of the following statements is true?
Leto [7]

Answer:

A ' = (-2, -3)

B ' = (0, -3)

C ' = (-1, 1)

=======================================================

Explanation:

To apply an x axis reflection, we simply change the sign of the y coordinate from positive to negative, or vice versa. The x coordinate stays as is.

Algebraically, the reflection rule used can be written as

Applying this rule to the three given points will mean....

Point A = (-2, 3) becomes A ' = (-2, -3)

Point B = (0, 3) becomes B ' = (0, -3)

Point C = (-1, -1) becomes C ' = (-1, 1)

The diagram is provided below.

Side note: Any points on the x axis will stay where they are. That isn't the case here, but its for any future problem where it may come up. This only applies to x axis reflections.

Step-by-step explanation:

7 0
2 years ago
Kimberly has a job to tile a room 14 x 12 ft with 1 ft square tiles. How many tiles Does he need?
jeyben [28]
She needs 168 tiles.
3 0
3 years ago
I'LL MARK THE CORRECT ANSWER AS BRAINLIEST !!!<br> which one is true?
sergejj [24]

Answer:

2.7

3

6

Step-by-step explanation:

2.7×3 = 8.1

3x3=9

6×3= 18

18-8.1= 9.9 < 10

18-9= 9 < 10

18-18=0 < 10

5 0
3 years ago
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