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3 years ago

H(x)=16-x, when x= -4

Mathematics

1 answer:

olchik [2.2K]3 years ago

8 0

Answer: -5

Step-by-step explanation: H(-4)=16-(-4)

[ -(-)=+ ]

Add 4

H(-4)=20

Divide -4

H=-5

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What is x*x=15? (Basically make an equation that equals up to 15.)

rodikova [14]

Answer:

$\displaystyle \sqrt{15} = x$

Step-by-step explanation:

Be VERY careful. When it write out the equation that way, it will give the speculation of this:

$\displaystyle 15 = x^2$

Now, in this case, since you were extra explanatory about this [what is written in parentheses], two factors I know of that multiply to 15 are these:

** $\displaystyle 15 = 2 \times 7\frac{1}{2}$

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3 0

3 years ago

(2a^2 + ab +2b)+(4a^2-3ab+9)

maw [93]

Answer:

-2 a b + 2 b + 6 a^2 + 9

Step-by-step explanation:

Simplify the following:

2 a^2 + a b + 2 b + 4 a^2 - 3 a b + 9

Grouping like terms, 2 a^2 + a b + 2 b + 4 a^2 - 3 a b + 9 = (a b - 3 a b) + 2 b + (2 a^2 + 4 a^2) + 9:

(a b - 3 a b) + 2 b + (2 a^2 + 4 a^2) + 9

a b + a b (-3) = -2 a b:

-2 a b + 2 b + (2 a^2 + 4 a^2) + 9

2 a^2 + 4 a^2 = 6 a^2:

Answer: -2 a b + 2 b + 6 a^2 + 9

5 0

3 years ago

Solve this equation -129=6(7+7x)-3

leva [86]

Answer:

-4

Step-by-step explanation:

-129 = 6(7 + 7x) - 3

Distribute the 6 into the parentheses.

-129 = 42 + 42x - 3

Add like terms.

-129 = 39 +42x

Subtract 39 from both sides.

-168 = 42x

Divide 42 from both sides.

-4 = x

7 0

3 years ago

Read 2 more answers

Consider the function f(x) = 49.5(0.82).

slavikrds [6]

Answer:

1. Exponential decay

2. 18%

Step-by-step explanation:

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3 years ago

Does anyone know how to do these maths question???

Dmitry_Shevchenko [17]

Answer:

Part 1) $f(g(x))=3(x^2)+2$

Part 2) $g(f(5))=289$

Step-by-step explanation:

we know that

A composite function is a function that depends on another function. A composite function is created when one function is substituted into another function

we have

$f(x)=3x+2$