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pychu [463]
3 years ago
9

Help pls, confused .

Mathematics
2 answers:
frutty [35]3 years ago
5 0

ANSWER

{f}^{ - 1} (x)=  \frac{7x + 3}{4}

EXPLANATION

The given function is

f(x) =  \frac{4x - 3}{7}

Let

y = \frac{4x - 3}{7}

We now interchange x and y to obtain:

x = \frac{4y - 3}{7}

Next, we have to make y the subject.

\frac{x}{1}  = \frac{4y - 3}{7}

Cross multiply:

7x =4y-3

Add 3 to both sides:

7x+3=4y

y =  \frac{7x + 3}{4}

Therefore the inverse is

{f}^{ - 1} (x)=  \frac{7x + 3}{4}

The last choice is correct.

zloy xaker [14]3 years ago
3 0

Answer:

ooo that looks hard maybe you should ask for help

Step-by-step explanation:

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soldi70 [24.7K]
For number 9 the answer is B
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3 years ago
William has $7.50 to spend at the pretzel shop. A pretzel costs $1.25 and a soft drink costs $0.90. He buys one drink and p Whic
Basile [38]

Complete Question

William has $7.50 to spend at the pretzel shop. A large pretzel costs $1.25 and a soft drink costs $0.90. He buys one drink and p pretzels. Which inequality can be used to find the number of pretzels William can buy?

a) 1.25p−0.9≤7.5

b) 1.25p+0.9≤7.5

c) 1.25p+0.9≥7.5

d) 1.25+0.9p≤7.5

Answer:

b) 1.25p+0.9≤7.5

Step-by-step explanation:

William has $7.50 to spend at the pretzel shop.

This means Williams can spend at least $7.50

A pretzel costs $1.25 and a soft drink costs $0.90. He buys one drink and ?pretzel

Therefore, the inequality can be used to find the number of pretzels William can buy is written as

1.25p+0.9≤7.5

Option b is the correct option

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3 years ago
If limx →<br> 2<br> ax<br> 2−b<br> x−2<br> = 8 find the value of a and b
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3 years ago
Solve for x:<br> (2x/3) + 10 = (x/5) + (36/5)
Reil [10]

Answer:

x = -6

Step-by-step explanation:

(2x/3) + 10 = (x/5) + (36/5)

15*[(2x/3) + 10 = (x/5) + (36/5)]   <em>[Multiply both sides by 15 in order to convert the fractions to whole numbers]</em>

(15/3)*2x +15*10 = (15/5)x + (15/5)*36

5*2x + 150 = 3x + 3*36

10x +150 = 3x + 108

7x = -42

x = -6

===

<u>Check:</u>

Does (2x/3) + 10 = (x/5) + (36/5) work for x = -6?

(2(-6)/3) + 10 = (-6/5) + (36/5) ?

-4 + 10 = (30/5) ?

6 = 6  YES

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2 years ago
I WILL MAKE BRAINLYEST
julsineya [31]
(a) 64

divide 16 by .25 and you will get 64

(b) 34

multiply 40 by .85
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3 years ago
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