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Mandarinka [93]
3 years ago
14

25p+40q=375 Solve for p and q?

Mathematics
1 answer:
fiasKO [112]3 years ago
5 0

Answer:

When you have 2 unknowns, you need 2 equations to solve for them.

Step-by-step explanation:

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19. Which one of the following statements expresses a true proportion?
choli [55]
That would be : 3:5 = 12:20....because 3/5 = 12/20
7 0
3 years ago
A jar contains 38 red marbles numbered 1 to 38 and 38 blue marbles numbered 1 to 38 a marble is drawn at random from the jar
liq [111]

Answer:

P(Red) = 0.50'

P(Odd) = 0.50\\

Step-by-step explanation:

Given

Red = 38

Blue = 38

Required (Missing part of the question)

(a) The marble is red. (b) The marble is odd-numbered

Solving (a): Probability of Red.

This is calculated as:

P(Red) = \frac{Red}{Total}

P(Red) = \frac{38}{38+38}

P(Red) = \frac{38}{76}

P(Red) = 0.50

Solving (b): Probability of Odd

Since each marble type is numbered 1 to 38, then half of it are odd.

i.e. 19 odd numbered red marbles and 19 odd numbered blue marbles.

So, the probability of odd is:

P(Odd) = \frac{Odd}{Total}

P(Odd) = \frac{19+19}{38+38}

P(Odd) = \frac{38}{76}

P(Odd) = 0.50\\

5 0
3 years ago
What's the solution x+1/4x=15
lianna [129]

Answer:

x = 12

Step-by-step explanation:

1.25x = 15

x = 12

3 0
3 years ago
Yolanda hadid 275 photos on her camera. Then she took 61 more photos. How many photos are on her camera now?
elena55 [62]

Answer:

336

Step-by-step explanation:

This is just normal addition.

              1

              275

               +61

                336

                   

8 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP, BRAINLEST
Artyom0805 [142]

Answer:

equation in standard form is  -3x + 5y = -26

Step-by-step explanation:

standard form of equation of line is

Ax + By = C

where A,B and C are integers.

such line has slope -A/B

Another form of line equation is slope intercept form, which can be written as

y = mx+ c

since in problem m = 3/5

thus, equation is

y = 3/5 x + c

Given that (2,-4) passes through this line, this point will satisfy the above equation

-4 = 3/5 *2 + c

=> - 4 = 6/5 + c

=> c = -4 -6/5 = (-4*5 - 6)/5

=> c = (-20 - 6)/5 = -26/5

Thus, equation in slope intercept form is

y = 3/5 x -26/5

lets rewrite this equation in  Ax + By = C

Multiplying LHS and RHS by 5 we have

5y =( 3/5 x)* 5 - (26/5 * 5)

=> 5y = 3x - 26

we have to bring 3x on LHS for that

we subtract 3x from both side

5y  -3x = 3x - 26 -3x

=> 5y  -3x =  - 26

rearranging the equation

-3x + 5y = -26

Thus, equation in standard form is  -3x + 5y = -26

6 0
3 years ago
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