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3 years ago

How to write this numbers in word 23.13

Mathematics

2 answers:

Gennadij [26K]3 years ago

5 0

Answer:

twenty three and 13 hundredths

MissTica3 years ago

5 0

Answer:

Twenty three point thirteen

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What is the vertex of the quadratic function f(x)=(x-8)(x-2)

stich3 [128]

F(x)=(x−8)(x−2)

y=(x−5)2−9
(Pretend the 2 is an exponent)

Use the vertex form, y=a(x−h)2+ky=a(x-2+k, to determine the values of a,h, and k.

a=1
h=5
k=-9

Find the vertex (h, k).
(5, -9)

7 0

3 years ago

Find the measure of arc DF (with an explanation of how to solve please!)

allochka39001 [22]

Answer:

mDF = 90°

(Assuming arc mCE is 5x + 10)

Step-by-step explanation:

When we have two chords crossing in a circle, there is a property where the angle in the cross point is equal half the sum of the corresponding arcs.

So in this case, we have:

70° = (mCE + mDF)/2

Assuming mCE is 5x + 10, we have:

70 = (5x + 10 + 11x + 2)/2

70 = (16x + 12)/2

70 = 8x + 6

8x = 64

x = 8

So the arc mDF is:

mDF = 11x + 2 = 11 * 8 + 2 = 90°

4 0

3 years ago

The number n of people using the elevator in an office building every hour is given by n = t2 − 10t + 40. In this equation, t is

Morgarella [4.7K]

Answer:

The number of persons using the elevator at any hour is never going to be less that 15.

Step-by-step explanation:

To solves this you have to suppose that there are at least 15 persons on the elevator, and the equation is converted into an inequation:

$t^2-10t+40$

Now you transform the inequation back to an equation to solve it:

$t^2-10t+25=0$

You need to know if there is any negative solution for the equation, to do this you can use the discriminant for a quadratic equation:

$D=b^2-4ac$

In this case, you have a=1, b=-10, c=25

$D= (-10)^2-4(1)(25)\\D=0$

Since the discriminant is 0 and a<0 the equation always is going to be positive. Therefore, the number of persons using the elevator at any hour is never going to be less than 15.

6 0

4 years ago

Find the value of the expression: a. 3x^0 for x=2.6, b. 10a^2b^0 for a=–3, b=–8

nekit [7.7K]

Step-by-step explanation:

For x = 2,6

$= 3{x}^{0}$