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aleksandr82 [10.1K]
2 years ago
7

Please help! Pleaseeee

Mathematics
2 answers:
murzikaleks [220]2 years ago
7 0
No solution (top equation is multiplied by -4 all values would cancel out)
Mumz [18]2 years ago
5 0
(1/2)x +y = 3 (equation 1)
2x +4y = 12 (equation 2)

((1/2)x +y = 3) x4
= 2x +4y = 12

2x +4y = 12
-
2x +4y = 12
= nothing

answer is B infinitely many solutions as the lines are stacked on top of another.
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The sum of two numbers is 148. The larger number is two less than three times the smaller. What are the two numbers?
Lyrx [107]
Let
x--------->  the larger number
y---------> the smaller number

we know that
x+y=148------> equation 1
x=3y-2------> equation 2

substitute 2 in 1
[3y-2]+y=148--------> 4y=150---------> y=150/4------> y=37.5
x=3y-2----> x=3*37.5-2-----> x=110.5

the answer is
the larger number is 110.5
the smaller number is 37.5
4 0
3 years ago
Read 2 more answers
B -5 ≥ -45 answer and steps
Natalka [10]

Answer:

-50

Step-by-step explanation:

b-5 \geq -45

b-5 = -45 ( collect like terms)

b = -45 + -5

b = -45 -5  b = -50

8 0
2 years ago
In a group of 1500 people, 585 have blood type A, 165 have blood type B, 690 have blood type O, and 60 have blood type AB. What
deff fn [24]
When calculating probability you need to remember that probability is:
something that you are observing divided by total number of participants.
The number you get is relative value(has value between 0 and 1) and if you want to get it in percentage (more clearly) just multiply it with 100.

In this case we are observing blood type B persons. Number of them is 165.
Total number of persons is 1500. Therefore our calculation looks like this:

165/1500 = 0.11    or  the probability is 0.11*100=11%
6 0
3 years ago
Read 2 more answers
What is the exact volume of the cone
Vitek1552 [10]

Answer:

V≈418.88

Step-by-step explanation:

Volume formula:   V=πr^2h /3

R= radius

H= height

R= 5 ft

H= 16 ft

Formula= V=π5^2(16/3)

7 0
3 years ago
If a*b means 2a + b , then what is 2*5 ?
rewona [7]

To solve this problem you must apply the proccedure shown  below:

If (a)(b)=2a+b, you have that:

(2)(5)=(2)(2)+5=9

Because a=2 and b=5

Therefore, as you can see, the answer is: 9

5 0
3 years ago
Read 2 more answers
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