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3 years ago

If m = 9, what is the value of the expression 3m - 4?

Mathematics

2 answers:

fomenos3 years ago

8 0

Answer:

Step-by-step explanation:

let's subsitute into 3m-4 using 9
3(9)-4
now let's multiply 3*9 which is 27
27-4 = 23
we are done :)

larisa [96]3 years ago

6 0

Answer: 23

Step-by-step explanation:

3(9) - 4

27 - 4

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Which expressions are polynomials?

Drupady [299]

Answer:

The third one

Step-by-step explanation:

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3 years ago

an isosceles triangle has a vertex angle of 21.21 degrees. two sides of the triangle are each 17.91 ft long. whats the area of t

lubasha [3.4K]

Answer:

The area of triangle is $A=58.02\ ft^{2}$

Step-by-step explanation:

Let

B -----> the measure of the vertex angle of the isosceles triangle ABC

a and c -----> the two congruent sides of the isosceles triangle ABC

we know that

The area of a triangle applying the law of sines is equal to

$A=\frac{1}{2}(a)(c)sin(B)$

we have

$a=c=17.91\ ft$

$B=21.21\°$

substitute in the formula

$A=\frac{1}{2}(17.91)(17.91)sin(21.21\°)$

$A=58.02\ ft^{2}$

7 0

4 years ago

Niu has decorated x cards. He started with 24 stickers, and he used 4 stickers per card. Which expressions can we use to describ

Kisachek [45]

Answer:

$24-4x$

Step-by-step explanation:

We have been given that Niu has decorated x cards. He started with 24 stickers and he used 4 stickers per card. So stickers used in x cards will be 4x.

As initial number of stickers was 24, so we can find number of stickers left after decorating x cards by subtracting number of stickers used in x cards from 24.

$\text{Number of stickers that Niu has left}=24-4x$