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2 years ago

Which characteristics best describe an acute isosceles triangle?

2 answers:

4 0

Isocoleese means that 2 sides and hence 2 angles are same measure
acute means that all 3 angles are less than 90 degrees

We can rule out choice I since acut means less than 90

II is a possibility, but it doesn't best describe it

III. that is true, but it doesn't include the isocileese part

IV. that is true, but doesn't include the acute part

not sure, either III or IV

Masteriza [31]2 years ago

4 0

Three and four are what best describes an acute isosceles triangle.

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X^2+15x=-45 solve by factoring

Julli [10]

1 Move all terms to one side.

{x}^{2}+15x+45=0

+15x+45=0

2 Use the Quadratic Formula.

x=\frac{-15+3\sqrt{5}}{2},\frac{-15-3\sqrt{5}}{2}

−15+3

−15−3

3 Simplify solutions.

x=-\frac{3(5-\sqrt{5})}{2},-\frac{3(5+\sqrt{5})}{2}

x=−

3(5−

)

,−

3(5+

)

6 0

2 years ago

Read 2 more answers

Which inequivalnet is equivalent to |x-4|<9

nikklg [1K]

Answer:

something like this?

$\left \{ {{x-4$

the top one is valid when x-4 >0

the bottom one is valid when x-4<0

Step-by-step explanation:

absolute value |x-4|

means that in case x-4 is negative, we will use -(x-4)

if it's positive we use x-4

let's find the solution (where the original inequality is true)

negative case:

-(x-4)<9 -x+4 < 9 -x < 5 x>-5

positive case:

x-4 < 9 x < 13

to satisfy both conditions -5 < x < 13

5 0

2 years ago

Help Asap!!!!!!<br> Brainliest!

Nastasia [14]

Answer:

f(-2.75)=-1

Step-by-step explanation:

Here we are given a Greatest Integer Function . The characteristic of this function is that it when operated , gives you the greatest integer it has near to it.

Hence if we have any greatest integer function f(x)=[x] , for x = -2.75

[-2.75]=-2 , as -the greatest integer near to -2.75 is -2 as -3<-2

Now coming back to our problem, our function is

f(x)=[x]+1

Hence for x=-2.75

f(x)=[-2.75]+1

as we discussed above [-2.75]=-2

Hence

f(-2.75)=-2+1

f(-2.75)=-1

6 0

2 years ago

If each interior angle of a regular polygon is 162 how many sides does it have

Yuri [45]

Answer:

20 sides

Step-by-step explanation:

The formula that relates interior angles with number of sides is:

$Each \ Interior = \frac{(n-2)*180}{n}$

Where

n is the number of sides.

We know each interior is 162 degrees, so we substitute and cross multiply and solve for n:

$Each \ Interior = \frac{(n-2)*180}{n}\\162=\frac{(n-2)180}{n}\\162n=(n-2)180\\162n=180n-360\\18n=360\\n=20$

THus, the polygon has 20 sides

4 0

2 years ago

The owner of a local nightclub has recently surveyed a random sample of n = 300 customers of the club. She would now like to det

quester [9]

Answer:

We cannot determine the appropriate hypotheses to test this study because we are only given the data for the sample size and the population mean. Meanwhile, we need to know the data of the sample mean, the standard deviation and the level of significance before we can state the appropriate hypotheses for this test.

Step-by-step explanation:

Given that:

sample size n = 300

population mean μ = 35

The null hypothesis and the alternative hypothesis can be computed as follows:

Null hypothesis

$H_o: \leq 35$

Alternative hypothesis

$H_1 > 35$

The degree of freedom df = n -1

df = 300 - 1

df = 299

8 0

3 years ago