2 years ago

NEED ANSWER!!! “write an equation to find y, the cost of shirts,given x, the number of shirts”?

Mathematics

1 answer:

Romashka-Z-Leto [24]2 years ago

7 0

Answer:

3 x + y=

Step-by-step explanation

More math questions if you would

Sholpan [36]

Answer:

Step-by-step explanation:

So we are given the function:

$f(x)=7x+8$

To find the inverse of the function, we simply need to flip f(x) and x and then solve for f(x). Thus:

$x=7f^{-1}(x)+8\\x-8=7f^{-1}(x)\\f^{-1}(x)=\frac{x-8}{7}$

So the answer is A.

7 0

3 years ago

Read 2 more answers

Type your answer in the box. Evaluate y3 – 2y (y – 5) + 13 when y = -3

kap26 [50]

Answer:

-62

Step-by-step explanation:

y³ – 2y (y – 5) + 13

when y = -3

y³ – 2y (y – 5) + 13

=(-3)³ – 2(-3) [ (-3) – 5] + 13 (by PEDMAS, evaluate parentheses first)

=(-27) + (6) (-8) + 13 (next do multiplication)

=(-27) + (-48) + 13

= -27 - 48 + 13

= -62

3 0

3 years ago

A circular spinner for a game has a radius of 5 cm. The probability of winning on one spin of this spinner is $\frac{2}{5}$. Wha

irina [24]

The total area of a circle is pi * radius^2

The total area of the circle is pi x 5^2 = 25pi sq. cm.

2/5 of this is success, so the answer is 2/5 * 25pi = 10 pi sq. cm.

4 0

3 years ago

If r varies directly as p and inversely as q2, and r = 27 when p =3 and q = 2, find r when p = 2 and q= 3

WITCHER [35]

Answer:

k = 36 and r = 8

Step-by-step explanation:

Given that r varies directly as p and inversely as q² then the equation relating them is

r = $\frac{kp}{q^2}$ ← k is the constant of variation

To find k use the condition r = 27 when p 3 and q = 2, thus

27 = $\frac{3k}{4}$ ( multiply both sides by 4 )

108 = 3k ( divide both sides by 3 )

k = 36

r = $\frac{36p}{q^2}$ ← equation of variation

When p = 2 and q = 3, then

r = $\frac{36(2)}{3^2}$ = $\frac{72}{9}$ = 8

8 0

3 years ago