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3 years ago

What is the value of this expression when x=-1 and Y = 2? 4x3y2

Mathematics

2 answers:

3241004551 [841]3 years ago

8 0

-48 plugging in everything and using PEMDAS it should be -48

DochEvi [55]3 years ago

6 0

Answer:

-48

Step-by-step explanation:

4 x -1= -4

3 x 2= 6

-4×6= -24

-24×2= -48

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18. Use Pascal's triangle to find the coefficients of the expanded polynomial (a + b)^3.

Over [174]

Answer:

Step-by-step explanation:

Hello, let's compute the first lines of the Pascal's triangle.

1 1

1 2 1

1 3 3 1

So for this question,

$(a+b)^3=a^3+3a^2b+3ab^2+b^3$

And then, the correct answer is A.

Thank you

6 0

4 years ago

Different sizes of ribbon need to be cut to go around various shapes for a craft project.

Dima020 [189]

You have five numbers $\sqrt{6},\ 2\dfrac{1}{2},\ -\sqrt{1},\ \dfrac{7}{2}, \ 3.\overline{3}.$

Among them there is one negative number $-\sqrt{1},$ this number is smallest.

Note that

$(\sqrt{6} )^2=6 \text{ and } \left(2\dfrac{1}{2}\right)^2=(2.5)^2=6.25.$

Since 6.25>6, then

$2\dfrac{1}{2}>\sqrt{6}$

and these numbers are less than 3

Note that

$\dfrac{7}{2}=3.5 \text{ and } 3.\overline{3}=3.333333....,$

then $3.3333333...$ and these numbers are greater than 3.

Therefore, the correct order from the smallest to the greatest is:

$-\sqrt{1}, \quad \sqrt{6},\quad 2\dfrac{1}{2},\quad 3.\overline{3}, \quad \dfrac{7}{2}.$

3 0

3 years ago

Haley has 3 3/8 cups of sugar to make pies. If each pie uses 2 1/4 cups of sugar, how many pies can she make?

tester [92]

Answer:

With 3 3/8 cups of sugar Haley can make one and a half pie.

Step-by-step explanation:

The amount of sugar required to make each pie = 2 1/4 cup

Now, $2 \frac{1}{4} = 2 + \frac{1}{4} = 2 + 0.25 = 2.25$

So, Haley uses 2.25 cup of sugar foe each pie.

Total cups of Sugar Haley has = 3 3/8 cups.

Now, $3 \frac{3}{8} = 3 + \frac{3}{8} = 3 + 0.375 = 3.375$

So, the total amount of sugar Haley has is 3.375 cups.

Now, $\textrm{Number of pies she can make} = \frac{\textrm{Total cups of sugar she has}}{\textrm{Cups of sugar required for each cake}}$

= $\frac{3.375}{2.25} =1.5$

or the number of pies she can make = 1.5

Hence, with 3 3/8 cups of sugar Haley can Make 1 1/2 pie.

8 0

3 years ago

Need help with this question please:

julsineya [31]

Answer:

If the data is collected in a biased manner, or the number of observations is too small, the graph could be skewed. To ensure the data is not skewed, collect a large representative unbiased sample. Hope this helps

Step-by-step explanation:

7 0

3 years ago

Which operation should you perform first when evaluating the expression 3²+ 2

Harrizon [31]

Answer:

You should calculate 3² first.

Step-by-step explanation:

In PEMDAS, E (which stands for exponents) comes before A (which stands for addition) so therefore you should calculate 3² first.

6 0

4 years ago

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