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Delvig [45]
3 years ago
8

Find

)" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
Brrunno [24]3 years ago
7 0

Step-by-step explanation:

Using the unit circle, the answer is

135 degrees

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Solve this equation for x: x^2+11x+28=0
lord [1]

Answer: x = -7 or x = -4

Step-by-step explanation: When an equation has a squared term in it

such as x² + 11x + 28 = 0, it's called a polynomial equation.

The rule for solving a polynomial equation

is to first set it equal to zero, then factor.

Since this equation is already set equal to zero,

our first step is to factor the left side of the equation.

To factor x² + 11x + 28, we need the factors

of 28 that add to 11 which are 7 and 4.

So we have (x + 7)(x + 4) = 0.

Whenever two terms are multiplied together to equal zero,

this means that either one or the other must equal zero.

So if (x + 7)(x + 4) = 0, then either x + 7 = 0 or x + 4 = 0.

Solving each equation from here, we get x = -7 or x = -4.

So our solution is {-7, -4}.

6 0
3 years ago
The measure of angle 1 is 130°.
eimsori [14]

Answer:

The angle opposite angle 1

Step-by-step explanation:

Opposite angles have the same degree when two lines intersect because they are vertical angles.

4 0
3 years ago
Read 2 more answers
A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B
Goshia [24]

A, B and C working together will finish same piece of work in 10 days

A can do a piece of work in 20 days. That is A is doing the work at a rate of  1 / 20. Therefore

B = 1 / 30

C = 1 / 60

A, B and C working togehter their rate will be added together =

A + B + C =  1 / 20 + 1 / 30 + 1 / 60 = 1 / 10

so they can work together to finish same piece of work in 10 days

4 0
2 years ago
What is the domain of y = -2x^(2)+ 8x
Vaselesa [24]
The domain is (-inf,+inf) and the range is (-inf,8]
5 0
3 years ago
Alex made fruit punch for a party. He mixed 3 gallons of orange juice, 3 quarts of pineapple juice, 5 pints of cranberry juice,
stira [4]

Answer:

I believe it's 19

Step-by-step explanation:

1 Gallon=4 Quart

2 pint=1 Quart

4 cups=1 Quart

12+3+2.5+1.5

7 0
3 years ago
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