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4 years ago

Please help question in the picture

Mathematics

1 answer:

coldgirl [10]4 years ago

8 0

Answer:

Step-by-step explanation:

To see if it is a right triangle, find the relationship using:

$a^2+b^2$ _ $c^2$

If the sum of a and b squared is equal to c (the Pythagorean theorem) then it is a right triangle.

Insert the values, with the biggest number being c (this is because c represents the hypotenuse, and the hypotenuse is the longest side of a triangle):

$15^2+36^2$ _ $39^2$

Simplify exponents:

$225+1296$ _ $1521$

Simplify addition:

$1521$ _ $1521$

Find the relationship:

$1521=1521$

It is a right triangle.

Finito.

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The graph shows the career interests of the students at Linda's college. Suppose there are 900 students at the school. How many

nevsk [136]

Answer:

117 students

Step-by-step explanation:

13/100 = X/900

(13 * 900)/100 = 117

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2 years ago

Sam bought brushes for $8,a palette for $5,and oil paints for $15.He paid $29.82 in all.What sales-tax rate did Sam pay?

Darina [25.2K]

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3 years ago

Read 2 more answers

Find k if (x+1) 2x^3+kx^2+1

Viktor [21]

<h2>Question:</h2>

Find k if (x+1) is a factor of 2x³ + kx² + 1

<h2>Answer:</h2>

k = 1

<h2>Step-by-step explanation:</h2>

The factor of a polynomial F(x) is another polynomial that divides evenly into F(x). For example, x + 3 is a factor of the polynomial x² - 9.

<em>This is because;</em>

i. x² - 9 can be written as (x - 3)(x + 3) which shows that both (x - 3) and (x + 3) are factors.

ii. If x = -3 is substituted into the polynomial x² - 9, the result gives zero. i.e

=> (-3)² - 9

=> (9) - 9 = 0

Therefore, if (x + a) is a factor of a polynomial, substituting x = -a into the polynomial should result to zero. This also means that, if x - a is a factor of a polynomial, substituting x = a into the polynomial should give zero.

<em><u>From the question</u></em>

Given polynomial: 2x³ + kx² + 1

Given factor: x + 1.

Since x + 1 is a factor of the polynomial, substituting x = -1 into the polynomial should give zero and from there we can calculate the value of k. i.e

2(-1)³ + k(-1)² + 1 = 0

2(-1) + k(1) + 1 = 0

-2 + k + 1 = 0

k - 1 = 0

k = 1

Therefore the value of k is 1.

3 0

3 years ago

Please help me how many times can 3 go into 77

faust18 [17]

Answer:

3 can go into 77 25 times.

3 0

3 years ago

Helpppppppppppppppppp!

julia-pushkina [17]

Remember that the radicand (the area under the root sign) must be positive or zero for a radical with an even index (like the square root or fourth root, for example). This is because two numbers squared or to the fourth power, etc. cannot be negative, so there are no real solutions when the radicand is negative. We must restrict the domain of the square-root function.

If the domain has already been restricted to $x \geq -11$ , we can work backwards to add 11 to both sides. We see that $x+11$ must be under the radicand, so the answer is A.

7 0

3 years ago