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Orlov [11]
3 years ago
15

there are 25 cows on the farm. Some of the cows are in the barn. 14 of the cows are in the field. How many cows are in the barn?

Think : is this a joining or separating problem?
Mathematics
1 answer:
mash [69]3 years ago
8 0
Separating because you have to do 25-14 for your answer. 11 cows are in the barn.
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. Greg has a school debt of $9 875. He wants to make biweekly payments and pay off the loan in 4 years. If the interest rate is
galina1969 [7]
They would be approximately $15,553.12.
7 0
3 years ago
Which expression is equivalent to ( 11 x − 8 ) + ( 7 − 4 x ) ?
dlinn [17]

Answer:

7x-1

Step-by-step explanation:

Use commutative property:

(11x-4x) + (-8+7) = 7x-1

6 0
3 years ago
1. What is the approximate area of a circle with a diameter of 20 inches?
ad-work [718]

Answer:

1. 100\pi

2. 27 cm^{3}

3. 30

Step-by-step explanation:

Area = \pir^{2}

       = \pi x 10x^{2}

       = 100\pi

Volume = l x w x h

             = 3 x 3 x 3

             = 27

7 0
3 years ago
Which expressions are polynomials?
igor_vitrenko [27]

Option A: z + 1

Option B: 6 + w

Option D: 2 x^{4}-y

Solution:

Let us first define the polynomial.

A polynomial can have constants, variables, exponents and fractional coefficients.

A polynomial cannot have negative exponents, fractional exponents and never divided by a variable.

<u>To find which expressions are polynomial:</u>

Option A: z + 1

By the definition, z + 1 is a polynomial.

It is polynomial.

Option B: 6 + w

By the definition, 6 + w is a polynomial.

It is polynomial.

Option C: y^{2}-\sqrt[3]{y}+4

y^{2}-\sqrt[3]{y}+4=y^{2}-{y}^{1/3}+4

Here, y have fractional exponent.

So, it is not a polynomial.

Option D: 2 x^{4}-y

By the definition, 2 x^{4}-y is a polynomial.

It is polynomial.

Hence z + 1, 6 +w and 2 x^{4}-y are polynomials.

6 0
4 years ago
Vhich of the following is a true statement about skew lines?
krok68 [10]

Answer:

A. Skew lines cannot lie in the same plane.

Step-by-step explanation:

(*Which)

Skew Line Definition (from Wikipedia): <em>"In three-dimensional geometry, skew lines are two lines that do not intersect and are not parallel." </em>-Wikipedia

<em>"Two lines that both lie in the same plane must either cross each other or be parallel, so skew lines can exist only in three or more dimensions."</em> -Wikipedia

Skew lines cannot lie in the same plane so A is correct and C is incorrect.

B and D are incorrect because our friend Wikipedia just said it was incorrect.

5 0
4 years ago
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