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Advocard [28]
3 years ago
11

Solve z= 3x + 5xy for x

Mathematics
2 answers:
Yanka [14]3 years ago
6 0

Answer:

x= z/3+5y this is the correct answer, mark brainliest? or however you spell it.

Andreas93 [3]3 years ago
6 0

ANSWER : y=z/5x-3/5

EXPLANATION : z= 3x + 5xy

Move 3x to the other side

Sing changes from +3x to -3x

z-3x=3x-3x+5xy

z-3x=5xy

Divide both sides by 5x to get y by itself

z/5x-3x/5x=5xy/5x

Cross out 5x and 5x

Divide by 5 and x

Then becomes 1*1*y=y

-3x/5x ( cross out x and x )

Then becomes -3/5

answer: y=z/5x-3/5

PLEASE MARK AS BRAINLIEST

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Robert is 10 years older than her brother. In 2 years, Robert will be three times as old as his brother. How old are they now?
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Robert is 13 and his brother is 3 y.o.
X... brother’s age
X+10... Robert’s age
X+10+2... Robert’s age in 2 years
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6 0
3 years ago
Solve the system of equations.<br> 5y – 4c = -7<br> 2y + 4x = 14
Lesechka [4]

c=\frac{5y}{4\\} + \frac{7}{4\\}

x=-\frac{y}{2} + \frac{7}{2}

Step-by-step explanation:

if 'c' is meant to be another 'x' the answer is

(3, 1)

x = 3,y = 1

4 0
3 years ago
A seal went 15 below sea level to catch a fish. A sea lion dove 6 feet less than two times as deep as the seal to catch a larger
anygoal [31]

Answer:

2\times 15-6 = 24\ below\ sea\ level

Step-by-step explanation:

Given that:

Distance traveled by seal to catch the fish = 15 below sea level

Sea lion wanted to catch a larger fish so sea lion dove 6 feet lesser than two time the distance that the seal traveled.

To find:

The expression to represent the position of the sea lion in the sea.

Solution:

If the distance traveled by seal is represented by D then as per the question statement:

Twice of D = 2\times D

6 lesser than twice of D = 2\times D - 6

Now, putting the value of D = 15

Therefore, the expression to represent the sea lion's position w.r.to sea level.

2\times 15-6\\ = 24\ below\ sea\ level

5 0
3 years ago
A student charges $31.50 for 3 hours of babysitting. If the amount the student earns babysitting is proportional to the hours sp
vodomira [7]

Answer:

C) y is equal to 10.5x

Step-by-step explanation:

$31.50 is charged for <em>3  </em>hours so, for 1 hour we need to divide 31.50 by 3, which results in 10.50. So 1 hour of babysitting is $10.50

this is because x is equal to the number of hours they babysit. we do not know the actual so it is replaced with x

and y is equal to the sum of 10.5x because we multiply the number of hours worked, and the amount per hour.

7 0
3 years ago
Find the missing side.<br> 6 is A^2 <br>10 is B^2<br> what is the missing side​
topjm [15]

Answer:

8

Step-by-step explanation:

This is a right triangle, which fits the Pythagorean Theorem, a^2 +b^2 = c^2. The variables a, b, and c all are sides of the triangle, while a and b are the two legs and c is the hypothenuse.

In this problem, we see that 6 and x are the legs and 10 is the hypothenuse.    We put 6 as "a" and x as "b" (but it doesn't matter which is a and b) and 10 is c. Therefore, we have the equation:

6^2 + x^2 = 10^2

which further simplifies to:

36 + x^2 = 100

x^2 = 64

and so x would equal 8 (or -8, but it is impossible to have a side length of -8).

Therefore, the missing side is 8.  

7 0
3 years ago
Read 2 more answers
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