Combine like terms to create an equivalent expression. 3.26d+9.75d-2.653.26d+9.75d−2.65

Mathematics

2 answers:

trasher [3.6K]3 years ago

0 0

<h2>Explanation:</h2><h2></h2>

Combining like terms is used in math in order to simplify expressions. We combine common terms in order to make the expression much easier. Common terms are those that have the same variable and exponent. So in the expression:

$3.26d+9.75d-2.65 \\ \\ \\ So: \\ \\ \text{The terms} \ 3.26d, \ 9.75d \ \text{have the same variable d and exponent 1} \\ \text{therefore we can combine them}$

Thus, the expression becomes:

$3.26d+9.75d-2.65=(3.26d+9.75d)-2.65=\boxed{13.01d-2.65}$

KATRIN_1 [288]3 years ago

0 0

Answer:

13.01d-2.65

Step-by-step explanation:

thank me later :)

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PLEASE HELP =(

Elena-2011 [213]

Let X = pounds of Bermuda grass needed.

(20 pounds bahia grass x $6.30) + ( X x $3.65) = (20 +X) x $4.90

Simplify:

126 + 3.65X = 98 + 4.90X

Subtract 3.65X from each side:

126 = 98 + 1.25X

Subtract 98 from each side:

28 = 1.25X

Divide both sides by 1.25

X = 28 / 1.25

X = 22.4 pounds required.

4 0

3 years ago

Let f(x) = 1/x . Find the number b such that the average rate of change of f on the interval [2, b] is − 1/8

vekshin1

Answer:

b=4

Step-by-step explanation:

So, we have the function $f(x)=1/x$ . We need to find b such that the average rate of change or the slope is -1/8 between the intervel [2, b]. First, let's find f(2).

f(2) = 1/(2) = 1/2

So, we have the point (2, 1/2)

At point b, f(b) = 1/b.

Let's plug this into the slope formula:

$\frac{y_2-y_1}{x_2-x_1}=\frac{.5-\frac{1}{b} }{2-b} =-1/8$

Now, we just need to solve for b. First, let's multiply both the numerator and denominator by b (to get rid of the annoying fraction in the numerator).

$\frac{.5b-1}{2b-b^2} =\frac{-1}{8}$