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Nataly_w [17]
3 years ago
6

What are these two answers. Please

Mathematics
1 answer:
pshichka [43]3 years ago
5 0

Answer:

11.   p = 59.2^\circ

12.   C.  x \tan q

Step-by-step explanation:

11.

First, find side DB.

(DB)^2 = 6^2 + 5^2

DB = \sqrt{61}

Now find m<p.

\cos p = \dfrac{adj}{hyp}

\cos p = \dfrac{4}{\sqrt{61}}

p = \cos^{-1} \dfrac{4}{\sqrt{61}}

12.

Let the height be y.

\tan q = \dfrac{y}{x}

y = x \tan q

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Step-by-step explanation:

i multiplied the answer choices by the fractions and 200 was the one that checked out

7 0
3 years ago
Consider the function f(x)=-3x^2 +7x -k. [3 Marks] a) For what values of k will the function have no zeros? b) For what values o
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Answer: a) k >4.08

b) k = 4.08

c) k<4.08

Step-by-step explanation:

Since we have given that

f(x)=-3x^2+7x-k

a) For what values of k will the function have no zeros?

It mean it has no real zeroes i.e. Discriminant < 0

As we know that

D=b^2-4ac

Here, a =-3

b = 7

c = -k

So, it becomes,

D

b) For what values of k will the function have one zero?

It means it has one real root i.e equal roots.

So, in this case, D = 0

So, it becomes,

D=b^2-4ac=0\\\\D=7^2-4\times -3\times -k=0\\\\49-12k=0\\\\49=12k\\\\k=\dfrac{49}{12}\\\\k=4.08

c) For what values of k will the function have two zeros?

It means it has two real roots.

In this case, D>0

So, it becomes,

D=7^2-4\times -3\times -k>0\\\\49-12k>0\\\\-12k>-49\\\\12k

Hence, a) k >4.08

b) k = 4.08

c) k<4.08

3 0
3 years ago
In a family with four children, what is the probabaility that 3 are girls and one is a boy
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If we write all the possible combinations for this problem, 4/16 or 1/4 would be the answer.

BGGG
GBGG
GGBG
GGGB

This is not taking into consideration the specific order of the children. In case the order will be necessary, the Girls need to be labeled differently and permutation formula needs to be used.
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3 years ago
The perimeter of a rectangle is 48 inches. The length of the rectangle is 3 times the width of the rectangle. What is the area o
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Step-by-step explanation:

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3 years ago
Graph the following inequality and then select the correct graph below. x - y - 2 ≥ 0
-Dominant- [34]

Answer:

the graph in the attached figure

Step-by-step explanation:

we have

x-y-2\geq 0

Isolate the variable y

-y\geq -x+2 -----> Multiply by -1

y\leq x-2

The solution of the inequality is the shaded area below the solid line

The equation of the line is y= x-2

The slope of the line is positive

The y-intercept of the line is the point (0,-2)

The x-intercept of the line is the point (2,0)

Using a graphing tool

the graph in the attached figure

7 0
3 years ago
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