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Alexeev081 [22]
3 years ago
12

Please help! Two math problems!!!

Mathematics
1 answer:
Fynjy0 [20]3 years ago
3 0

Answer:

Tell me if i am wrong. :)

Step-by-step explanation:

To solve for y:

Q.1   2x + y = -1

       y = -1 - 2x

Q. 2.  4x - 5y = 7

        y = 7 - 4x over -5

 

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Dylan works out and burns 10 calories per minute swimming and 7 calories per minute biking. He wants to burn a minimum of 600 ca
Alexxandr [17]

Answer:

The solution in the attached figure

Step-by-step explanation:

Let

x -----> the time Dylan spends swimming

y -----> the time Dylan spends biking

we know that

10x+7y \geq 600 -----> inequality A

x \geq 2y -----> inequality B

Solve the system by graphing

The solution is the shaded area

see the attached figure

5 0
3 years ago
PLEASE HELP ME!!!!!!!!!!!!
rjkz [21]
The answer is C.
The volume of the cylinder is 37.7.
The volume of the two comes combined is 25.14.
Put together, This is 62.84.
62.84 divided by 3.1415... is about 20.
3 0
3 years ago
A license plate has six characters. Three characters are letters, two characters are numbers (0-9), and one character is a lette
jok3333 [9.3K]

Answer:1)Number of different license plates can be made =17576×100×260=456976000

2)Probability of getting a plate with abc123 or 123 abc=0.0000004

Given that :-A license plate has six characters.

As three characters are letters ∴ ways of these 3 letters into the plate with repetition = 26×26×26=17576 ways

and  two characters are numbers (0-9 - total 10 characters)∴ways of these 2 numbers into the plate with repetition=10×10 =100 ways

and one character is a letter or a number=26×10=260

So number of different license plates can be made =17576×100×260=456976000

Now Probability of getting a plate with abc123 or 123 abc

=P(abc123 or 123abc)=P(abc123)+P(123abc)-P(abc123)×P(123abc)=1/456976000+1/456976000-1/456976000×1/456976000

=1/456976000(1+1-1/456976000)

=1/456976000(2-0.0000002)=2/456976000=0.0000004

Probability of getting a plate with abc123 or 123 abc=0.0000004

3 0
3 years ago
PLEASE ANSWER I NEED HELP WITH THIS I WILL MARK YOU AS BRAINLIEST IF YOU ANSWER CORRECTLY​
mixas84 [53]

De Answer is:

1:2 2:4 3:6 4:8 5:10 8:10 10:20

Step-by-step explanation:

multiply paper by 2 to get cards

4 0
3 years ago
Which of the following number lines represents the solution for 3x + 12 ≤ 24 ?
kari74 [83]

Answer:

Option (2)

Step-by-step explanation:

Given inequality is,

3x + 12 ≤ 24

3x + 12 - 12 ≤ 24 - 12

3x ≤ 12

\frac{3x}{3}\leq \frac{12}{3}

x ≤ 4

Now we can plot this inequality on a number line.

An arrow starting with a solid point from x = 4 directing towards negative infinity will be the graph on a number line.

Therefore, Option (2) will be the correct option.

5 0
3 years ago
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