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2 years ago

Consider the following proportion:

Mathematics

2 answers:

lakkis [162]2 years ago

8 0

Answer:

x=9/4

Step-by-step explanation:

Assoli18 [71]2 years ago

7 0

Answer:

2x=84

÷2. ÷2

x=42

Step-by-step explanation:

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3 years ago

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juin [17]

Answer:

The last one

Step-by-step explanation:

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2 years ago

You have $550 in a savings account that earns 3% simple interest each year. How much will be in your account in 10 years? Pleaze

Softa [21]

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3 years ago

The sum of 4 times the number x and 26 is 130.

Lesechka [4]

Answer:

A. Correct choice is C

B. Correct choice is B

Step-by-step explanation:

4 times the number x is 4x.

The sum of 4 times the number x and 26 is 4x+26.

The sum of 4 times the number x and 26 is 130, then

4x+26=130.

Correct option is option C.

Solve this equation:

4x=130-26,

4x=104,

x=26.

6 0

2 years ago

6. Let f and g be differentiable functions

Julli [10]

Answer:

(b) 1

Step-by-step explanation:

To differentiate $h(x)=f(x)g(x)$ we will need the product rule:

$h'(x)=f'(x)g(x)+f(x)g'(x)$ .

We have $h'(x)=f(x)g'(x)$ , so the following equation is true by the transitive property:

$f'(x)g(x)+f(x)g'(x)=f(x)g'(x)$

By subtraction property we have:

$f'(x)g(x)=0$

Since $g(x) \neq 0$ , then we can divide both sides by $g(x)$ :

$f'(x)=\frac{0}{g(x)}$

$f'(x)=0$

This implies $f(x)$ is constant.

So we have that $f(x)=c$ where $c$ is a real number.

Since $f(0)=1$ and $f(0)=c$ , then by transitive property $1=c$ .

So $f(x)=1$ .

Checking:

$h(x)=1 \cdot g(x)$

$h'(x)=g'(x)=1 \cdot g'(x)$

So the following conditions were met.

5 0

3 years ago