All categories

3 years ago

Can y’all help please

Mathematics

1 answer:

kirill115 [55]3 years ago

5 0

SOH
Sin-1(57/100)= 34.75022575
So the answer could be 35

You might be interested in

How many distinct pairs of perfect squares differ by 35? (the pair $a, b$ is the same as the pair $b, a$.)?

Phantasy [73]

35 has 4 divisors, hence two factor pairs: 1*35 and 5*7. Each corresponds to a set of perfect squares that differ by 35

One pair is ((35±1)/2)^2 = {17^2, 18^2} = {289, 324}
The other is ((7±5)/2)^2 = {1^2, 6^2} = {1, 36}

5 0

4 years ago

The grounds keeper of Estofer Park has to mow 14,623 sq. ft. of grass. He can mow 13 sq. ft of grass in one minute. How many min

MA_775_DIABLO [31]

Answer: $1,124\frac{11}{13}\ minutes$

Step-by-step explanation:

Let be "x" the time in minutes that will take him to mow the entire park.

You know that he can mow 13 square feet in 1 minute and he has to mow 14,623 square feet.

Then, you can write the following proportion:

$\frac{1}{13}=\frac{x}{14,623}$

Solving for "x", you get:

$x=\frac{14,623}{13}\ min$

To write that improper fraction as a mixed number:

- The quotient when you divide the numerator by the denominator of the fraction obtained, is $1,124$ (This will be the whole number).

- The remainder of that division is $11$ (This will be the numerator of the fraction).

- The denominator does not change.

Then:

$x=1,124\frac{11}{13}\ min$

8 0

3 years ago

Which of the following correctly completes the square for the equation below? x^2 + 2x = 19

stepan [7]

I hope this helps you

5 0

3 years ago

Show that if k>3.2, the solutions of 5x²-8x+k=0 are not real numbers.

Novay_Z [31]

Answer:

3.2 is the highest value for k that will yield a non-negative discriminant

Step-by-step explanation:

For an equation to have real numbers as solutions, its discriminant (delta value) must be bigger than zero since there are no real square root solutions for negative numbers.

$x_{1} =\frac{-b +\sqrt{\Delta} }{2a}\\x_{2} =\frac{-b -\sqrt{\Delta} }{2a}$

In this case, the discriminant is given by:

$\Delta = (-8)^{2} - 4*5*k \\\Delta = 64 - 20*k \\$

For k =3.2

$\Delta = 64 - 64 = 0 \\$

As shown above, 3.2 is the highest value for k that will yield a non-negative discriminant and, therefore, if k > 3.2 the solutions of the expression are not real numbers.

7 0

3 years ago

C)The elevation of city A is 60 feet above sea level; the elevation of city C is 12 feet above sea level. The elevation of city

Norma-Jean [14]

A. The expression to represent the elevation of city D is 1/2 × 12.

B. Solving the expression, 1/2 × 12 = 6 ft the elevation of city D is positive because the elevation of city D is above sea level.

The elevation of city A is 60 ft above sea level .

The elevation of city C is 12 ft above sea level.

The elevation of city D is 1 /2 of the elevation of city C. Therefore, the elevation of city D above sea level will be

1/2 of 12 = 1/2 × 12

The expression to represent the elevation in feet of city D is as follows:

1/2 of 12 = 1/2 × 12

Let's solve the expression below:

1/ 2 × 12 = 6 feet.

The answer is positive because the elevation of city D is above see level.

3 0

2 years ago