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Mathematics

1 answer:

Paul [167]3 years ago

8 0

9 is the answer.
How?
We need to find the total number of hours he worked for, and then we need to divide the amount of money he earned by the number of hours he worked for to find how much he earned per hour.
To find the total number of hours worked, add 2.75 and 1.75. The answer is 4.5 hours.
Divide 40.50 by 4.5, and the answer is 9. So, he earned 9 per hour.

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a triangle has a base that is 3 times longer than its height. it has a area of 486 sq cm. what is the base and height

saw5 [17]

B = 3h . . . . . . . .given by the problem statement
A = (1/2)bh . . . . formula for the area of a triangle

486 cm² = (1/2)*(3h)*h . . . substitute given information
(2/3)*486 cm² = h² . . . . . .multiply by 2/3
√324 cm = h . . . . . . . . . . . . . .take the square root

The height is 18 cm.
The base is 3*18 = 54 cm.

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3 years ago

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Ksivusya [100]

Answer:

Step-by-step explanation:

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5 0

3 years ago

Does anyone understand what to do here?

My name is Ann [436]

9514 1404 393

Answer:

see attached

Step-by-step explanation:

There are several possible ways to describe the "type" of a polynomial. Here, since there is a separate column for "degree", we assume that "type" refers to the number of terms.

Polynomials with 1, 2, or 3 terms are called, respectively, monomial, binomial, and trinomial. The first two expressions listed have 1 term only, so are monomials. The last expression has 3 terms, so is a trinomial.

The coefficients are the constant multiplier of the term. Some say a "constant", such as the -8 in the last expression, is not considered a coefficient, because there are no variables that it is multiplying. Here, we have listed it among the coefficients in that expression.

The degree of a term is the sum of the degrees of the variables in the term. For terms with only one variable, it is the exponent of that variable. For terms such as the second expression, the degree is the sum of the exponents: 3+4 = 7. The degree of a polynomial with more than one term is the highest degree of all the terms.