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3 years ago

Anybody know the answer to this?

Mathematics

2 answers:

avanturin [10]3 years ago

8 0

Answer:

The answer is 18

Step-by-step explanation:

Substitute b for -3 and y for 5 so 3*5=15

You then subtract -3 from 15 so a negative minus a negative is a positive so the equation would be 3*5=15--3= 3*5=15+3=18

Bezzdna [24]3 years ago

4 0

Answer:

3*5 - -3 = 18

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5x+2y=6 3y=2x+9 how many solutions does this problem have? No solution, one solution, or infinite solutions

Komok [63]

Answer:

One solution

Step-by-step explanation:

First, organize the equations by moving y to the left hand side:

5x + 2y = 6, subtract 5x from both sides and we get: 2y=6-5x

3y = 2x + 9 is already done

Next, set the coeficcient of both y values equal to the least common multiple of 2 and 3 which is 6:

2y=6-5x multiply both sides by 3, 6y = 18-15x

3y=2x+9 multiply both sides by 2, 6y = 4x+18

Substitute y on both sides and we get 18-15x=4x+18

Simplify that and you get 19x=0, x equals 0, so there is one solution

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2 years ago

In which quadrant would these coordinates be located?

stepladder [879]

D.) Quadrant I
Both values are positive, which means it must be quadrant 1

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3 years ago

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I need some help on my homework

irakobra [83]

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3 years ago

Priya has a piece of string 5/6 yard long. She cuts 3/5 of the piece of string for a craft. What is the length of the string lef

Solnce55 [7]

Total length of the string = $\frac{5}{6}$ yard

Length of string used for craft = $\frac{3}{5}$ of total length of string

= $\frac{3}{5}$ of $\frac{5}{6}$

= $\frac{3}{5} \times \frac{5}{6}$

= $\frac{3}{6}$ yard

Length of the string left after use = Total length of the string - Length of string used for craft

Length of the string left after use = $\frac{5}{6}-\frac{3}{6}$

= $\frac{2}{6}$

Reducing it to the lowest term, we get

= $\frac{1}{3}$ yard

Therefore, the length of string left is $\frac{1}{3}$ yard.

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3 years ago

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What is the inverse of the function below? f(x) = 5x - 2

kupik [55]

Answer:

B. f -1(x) = x + 2 / 5

$f^{-1}(x)=\frac{x+2}{5}$

Step-by-step explanation:

To find the inverse of a function we need to interchange x and y an solve for y.

Since $f(x)=y$ , then

$f(x)=5x-2$

$y=5x-2$

$x=5y-2$

Add 2 to both sides

$x+2=5y-2+2$

$x+2=5y$

Divide both sides by 5

$\frac{x+2}{5}=\frac{5y}{5}$

$\frac{x+2}{5}=y$

$y=\frac{x+2}{5}$

$f^{-1}(x)=\frac{x+2}{5}$

We can conclude that the correct answer is B. f -1(x) = x + 2 / 5

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3 years ago