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3 years ago

How do I find the value of an expression

Mathematics

1 answer:

levacccp [35]3 years ago

5 0

Answer:

Step-by-step explanation:

To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations. In the example above, the variable x is equal to 6 since 6 + 6 = 12. If we know the value of our variables, we can replace the variables with their values and then evaluate the expression.

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A brace for a shelf has the shape of a right triangle. its hypotenuse is 14 inches long and the two legs are equal in length. ho

maks197457 [2]

To answer this item, we make use of the equation derive from the Pythagorean theorem for right triangles which states that the square of the hypotenuse (the longest side) is equal to the sum of the squares of the two shorter sides. If we let x be the measure of both the shorter sides (we call this as legs), we have,
(14 in)² = (x²) + (x²)
Simplifying the equation,
196 in² = 2x²
Divide both sides of the equation by 2,
98 in² = x²
To get the value of x, we get the square root of both sides of the equation,
x = sqrt (98) = 7√2 inches

Hence, the measure of each leg of the right triangle is 7√2 inches or approximately 9.9 inches.

8 0

3 years ago

Witch method can be used to find the area of the composite shape?

Setler79 [48]

No idea because there is no image

6 0

3 years ago

Rudy has 10 white she sells 23 pink seashells and 21 Brown see cells if he divides the cells into equally between three friends

Alex_Xolod [135]

Answer:

Each friend will get 18 sea shells.

Step-by-step explanation:

Given:

Rudy has white sea shells = 10

Rudy has pink sea shells = 23

Rudy has brown sea shells = 21

Number of friends = 3

Rudy divides the sea shells into equally between three friends.

We need to find how many sea shells each friend can get.

Now first we find the total number sea shells.

Total number of sea shells = white sea shells + pink sea shells + brown sea shells = 10 + 23 + 21 = 54

Now to find number of sea shell each friend can get we will divide total number of sea shell with number of friends.

number of sea shell each friend can get = $\frac{\textrm{Total number of sea shells}}{\textrm{ Number of friends}} = \frac{54}{3}=18$

Hence each friend will get 18 sea shells.

8 0

3 years ago

Identify the zeros of the polynomial function N(x)=1/2 (x-1)(x+3).

zhannawk [14.2K]

Answer:

a:x=-3

c:x=1

Step-by-step explanation:

The zeros of a function are the values of x for which the value of the function f(x) becomes zero.

In this problem, we have the following function:

$f(x)=\frac{1}{2}(x-1)(x+3)$

Here we want to find the zeros of the function, i.e. the values of x for which

$f(x)=0$

In order to make f(x) equal to zero, either one of the factors $(x-1)$ or $(x+3)$ must be equal to zero.

Therefore, the two zeros can be found by requiring that:

$x-1=0\\\rightarrow x=+1$

$x+3=0\\\rightarrow x=-3$

So the correct options are

a:x=-3

c:x=1

6 0

3 years ago

Solve the exponential equation: 2^3x+1 = 128

dsp73

Answer:

So x=2.32956156226

Step-by-step explanation:

First subtract 1 on both sides

2^3x=127

Now you can rewrite this as

(2^3)^x

As it still equals the same thing

Now 2^3 is 8

So the equation is now

8^x=127

So we use log formula

log8 127=x

So how many times do we have to multiply 8 by itself to get 127?

The answer is: 2.32956156226

Hope this helps!

3 0

3 years ago

How do I find the value of an expression ​

How do I find the value of an expression