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Mazyrski [523]
2 years ago
5

There are two questions there. Feel free to just answer one. I’m stuck on these last two.

Mathematics
2 answers:
LenaWriter [7]2 years ago
7 0

Answer:

Someone already answered so you mine will be useless, anyway have a nice day :D

Step-by-step explanation:

arlik [135]2 years ago
3 0

Answer:

7. option D

8. option D

Step-by-step explanation:

7.  we can assume the height of the radio tower to be x. We're given with its shadow,the height of the person and also their shadow. Since we have 3 known values and an unknown, we can make a proportion comparing the tower's height to the height of the person.

∴ 6/10 = x/ 400

⇒ x= (6 * 400)/10 = 240 feet.

8.  The question is similar to the above question where again we have 3 knowns and one unknown. Let us assume the length to be x. We'll again compare the length of the two photographs and make it as a proportion.

∴ 4/6 = x/10

⇒ x = (4 * 10)/6 = 6.7 in

Hope that answers your questions!

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Please help i'm not that good at math. Determine the number of real solutions for each system of equations.
ratelena [41]

System A has ONE real solution

System B has NO real solutions

System C has ONE real solution

7 0
3 years ago
Read 2 more answers
Please help me with this math question I really need help ;/. I'll give brainliest if u help.
Darya [45]

Step-by-step explanation: You have to substitute the numbers in for x & y

(0, -5): YES

3x - 4y - 8 = 12

3(0) - 4(-5) - 8 = 12

0 + 20 - 8 = 12

20 - 8 = 12

12 = 12


(4, -2): YES

3x - 4y - 8 = 12

3(4) - 4(-2) - 8 = 12

12 + 8 - 8 = 12

20 - 8 = 12

12 = 12


(8, 2): NO

3x - 4y - 8 = 12

3(8) - 4(2) = 12

24 - 8 = 12

16 = 12


(-16, -17): YES

3x - 4y - 8 = 12

3(-16) - 4(-17) - 8 = 12

-48 + 68 - 8 = 12

20 - 8 = 12

12 = 12


(-1, -8): NO

3x - 4y - 8 = 12

3(-1) - 4(-8) = 12

-3 + 32 = 12

29 = 12


(-40, -34): NO

3x - 4y - 8 = 12

3(-40) - 4(-34) - 8 = 12

-120 + 136 - 8 = 12

16 - 8 = 12

8 = 12


Hope this help you!!! :)

7 0
3 years ago
What is the property of 3m x 1 =3m
Kipish [7]

Answer:

Assuming this is for a Conic Section. There is no property as it does not match a conic section.

8 0
2 years ago
Forty five percent of middle schools have a horse as a mascot. If there are 420 middle schools how many have a horse as a mascot
allochka39001 [22]
189
Because you have to turn it into a percentage in order to know how many per 1 percent. So multiply 420 by 100 and get 4.2 then you multiply it by 45 and you get 189 so 179 schools have a horse mascot
3 0
3 years ago
I need help. Please. Thank you.
Bond [772]

Answer:

Some answers include 42, 48, 54, etc.

Step-by-step explanation:

Since the number must be divisible by 2: the number must be even.

For a number to be divisible by 3, the sum of the digits must be divisible by 3.

4+2=6 which is divisible by 3

4+8=12 which is divisible by 3

5+4=9 which is divisible by 3

You can extend this logic for any number from 40 up to 99 since your number must be two digits and greater than 40.

If this helped, a brainliest would be greatly appreciated!

4 0
3 years ago
Read 2 more answers
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