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3 years ago

Simplify the expression 9x + 7 – x + 3

Mathematics

2 answers:

Alex787 [66]3 years ago

6 0

$\huge{\boxed{ \tt{Solution :- }}}$

<h3>Given :</h3>

$\sf {9x+7-x+3}$

$\sf {Simplify\:the\:expression.}$

Now we solving it :

$\sf{ : \implies{9x + 7 -x + 3}} \\ \\ \bf{By \:combining \: in \: like\:terms :} \\ \\ \sf{ : \implies{9x - x + 7 + 3 \: \: \: }} \\ \\ : \implies{\boxed {\tt{8x +10}}}$

$\bf{\therefore{The\:answer\: is\:8x +10.}}$

$\rule {307}{2}$

Sphinxa [80]3 years ago

5 0

Answer:

8x + 10

Step-by-step explanation:

combine 9x and -x to get 8x

combine 7 and 3 to get 10

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The heights of North American women are nor-mally distributed with a mean of 64 inches and a standard deviation of 2 inches. a.

serious [3.7K]

Answer:

0.1587

Step-by-step explanation:

Given the following :

Mean (m) of distribution = 64 inches

Standard deviation (sd) of distribution = 2 inches

Probability that a randomly selected woman is taller than 66 inches

For a normal distribution :

Z - score = (x - mean) / standard deviation

Where x = 66

P(X > 66) = P( Z > (66 - 64) / 2)

P(X > 66) = P(Z > (2 /2)

P(X > 66) = P(Z > 1)

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2 years ago

How many calories are in a package of peanuts with 15 grams of protein

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Answer:

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Step-by-step explanation:

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3 years ago

Pentagon ABCDE is shown on the coordinate plane below.

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The second choice is the correct one.

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2 years ago

Read 2 more answers

Help me do examples for a function and a non function

bekas [8.4K]

Answer:

{(1,2) (3,4) (5,6)} and {(1,2) (1,4) (5,6)}

Step-by-step explanation:

you really want to think of a function as a vending machine. if you press B12 on a vending machine because thats where the chips are, only the chips should come out. in a function, the input value aka x (B12, what youre putting in) should only have one output value aka y, (the chips)

an example of a function would be {(1,2) (3,4) (5,6)}

an important thing to remember is that one output value can belong to multiple input values. there can be chips (output) in both B12 and C12 (inputs) BUT as i said before, there CANNOT be two outputs for one input. B12 cannot give you both chips and a drink.

using this, another example of a function would be {(1,2) (3,2) (5,2)}

an example of an non function would be {(1,2) (1,4) (5,6)} because x, the input value, has multiple output values which is not possible. the output of 1 can not be 2 and 4 at the same time which we can see in the (x,y) coordinates.

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2 years ago

Explain why the graph of quadratic function could not contain both a minimum vertex and a maximum vertex at the same time.

KonstantinChe [14]

A quadratic function is a function of the form $f(x)=ax^2+bx+c$ . The vertex, $(h,k)$ of a quadratic function is determined by the formula: $h= \frac{-b}{2a}$ and $k=f(h)$ ; where $h$ is the x-coordinate of the vertex and $k$ is the y-coordinate of the vertex. The value of $a$ determines if the parabola opens upward or downward; if $a$ is positive, the parabola opens upward and the vertex is the minimum value, but if $a$ is negative the graph opens downward and the vertex is the maximum value. Since the quadratic function only has one vertex, it could not contain both a minimum vertex and a maximum vertex at the same time.

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