MATHEMATICS MIDDLE SCHOOL

Which polynomial is a perfect square trinomial A. 25x^2-20x-16
B. 9a^2-30a-25
C. 25b^2-15b +9
D. 16x^2-24x+9

Answers

Answer 1
Answer:

Answer:

D

Step-by-step explanation:

16x^2 - 24x + 9

(4x - 3)^2

(4x - 3) (4x - 3)

16x^2 - 12x - 12x + 9

16x^2 - 24x + 9

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A giraffe is standing 22 feet from a naturalist hiding in the bush. The naturalist sights the animal and finds the angle of elevation is 30 degrees How tall is the giraffe?

Answers

Answer:

height = 12.7 feet

Step-by-step explanation:

To find the height of the giraffe, we just need to use the tangent relation of the angle of elevation.

The opposite side to the angle is the height of the giraffe, and the adjacent side of the angle is the distance between the giraffe and the narutalist.

So, we have that:

tangent(30) = height / distance

0.5774 = height / 22

height = 22 * 0.5774 = 12.7 feet

Answer:

12.7

Step-by-step explanation:

What is the quotient of 6 and -1/5?

Answers

Answer:

The quotient of 6 and -1/5 is -30.

Step-by-step explanation:

Consider the provided information.

We need to find the quotient of 6 and -1/5

To find the quotient of 6 and -1/5 divide them as shown.

Translate the provided statement.

6/ (-1)/(5)

(6)/(-(1)/(5))

=-6* 5

=-30

Hence, the quotient of 6 and -1/5 is -30.
What really helps is looking at it like a positive and negative number line. Adding a negative is the same as subtracting a positive, and visa versa. The quotient is 5.8

How do you solve the equation 5/x= x-4

Answers

Answer:

x=5

Step-by-step explanation:

write x - 4 as a fraction with denominator = 1

 

5/x = (x - 4)/1

 

Now cross multiply

 

x(x - 4) = 5    multiply out and collect all terms on the left side of the equal sign

 

x2 - 4x - 5 = 0    factor the quadratic into two binomials

 

(x - 5)(x + 1) = 0   the product of two numbers = 0 when either number is zero

 

Therefore x = 5 or x = -1

 

In Loma, Montana, on January 15, 1972, the temperature increased 103 degrees in a 24-hour period. If the lowest temperature on that day was -54 degrees Fahrenheit, what was the highest temperature?

Answers

-54+103\n49

49 degrees

there are 150 sheep in a flock 34% of them are white what is the total number of white sheep in the flock?

Answers

150 (total) × 34 (percent) = 5,100

5,100 ÷ 100 (total percent you can have) = 51

51 sheep are white.

51. 34
150. 100

Jason is keeping track of the amount of money that he spends on gas each month. Below are the amounts for last month: $24.75
$30.25
$34.60
$38.90
What is the best estimation for the amount that Jason spent on gas last month?
A) 20 + 30 + 30 + 40
B) 20 + 30 + 35 + 40
C) 25 + 30 + 35 + 40
D) 30 + 30 + 35 + 40

Answers

The answer is C. They are all no more than £1.10 off,
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