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3 years ago

PLEASE ANSWER ASAP PLEASE

Mathematics

1 answer:

Nezavi [6.7K]3 years ago

3 0

Answer:

the answer is c

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What is the y coordinate of the solution to the system of equations? 3x+6y=3 5x-y=27

Illusion [34]

Solve for y
eliminate x
multiply firs tequation by -5 and 2nd by 3 and add them

-15x-30y=-15
<u>15x-3y=81 +</u>
0x-33y=66

-33y=66
divide both sides by -33
y=-2

the y coordinate is y=-2

7 0

3 years ago

Through: (-5, -5), parallel to y = 3/5x + 3

Komok [63]

Answer:

$\displaystyle y=\frac{3}{5}x-2$

Step-by-step explanation:

We want to find the equation of a line parallel to:

$\displaystyle y=\frac{3}{5}x+3$

And passes through (-5, -5).

Recall that parallel lines must have the same slope.

Since the slope of our old line is 3/5, the slope of our new line must also be 3/5.

So, we know that the slope of our new line is 3/5 and it passes through (-5, -5).

Now, we can use the point-slope form given by:

$y-y_1=m(x-x_1)$

We will let (-5, -5) be (x₁, y₁). m is the slope or 3/5. Hence:

$\displaystyle y-(-5)=\frac{3}{5}(x-(-5))$

Simplify:

$\displaystyle y+5=\frac{3}{5}(x+5)$

Distribute:

$\displaystyle y+5=\frac{3}{5}x+3$

Subtract 5 from both sides:

$\displaystyle y=\frac{3}{5}x-2$

And we have our equation.

7 0

3 years ago

The total cost for renting a boat is $25 and the cost of fuel a operating the boat is $1.30 per day write equation that will giv

denis-greek [22]

C is the correct answer

$25 is constant and $1.30 is the variable cost that changes per day, therefore it would be $25 + (1.3×No. of Days)

3 0

3 years ago

An element with mass 970 grams decays by 27.7% per minute. How much of the

Alex

Answer:

14.35 grams

Step-by-step explanation:

Amount left, in grams = (970 grams)(1.000 - 0.277)^m, where m is the number of minutes. This is exponential decay.

Amout left = (970 grams)(0.723)^13 = (970 grams)(0.01475), or 14.35 grams

4 0

3 years ago

Read 2 more answers

Estimate the percent of each number. 47% of 77

Anettt [7]

ANSWER

36 .19

EXPLANATION

We want to estimate

$47\% \: of \: 77$

This is the same as

$\frac{47}{100} \times 77$

$\frac{47}{100} \times \frac{77}{1}$

We multiply the numerators to get,

$\frac{3619}{100}$

We convert to decimals to get

$36.19$

5 0

3 years ago