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Sindrei [870]
3 years ago
6

PLEASE HELP!!! ASAP!!!!!!

Mathematics
2 answers:
Pachacha [2.7K]3 years ago
4 0

Answer:

a. 1500

b.210

c.300

d.42

Step-by-step explanation:

hope this helps :D

mario62 [17]3 years ago
3 0

Answer:

A= 80

B= 37

C= 13

D= ? not sure apologies, did this a long time ago.

Step-by-step explanation:

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A number minus 3 is at least −5.
NikAS [45]

Answer:

x is at least -2

Step-by-step explanation:

6 0
3 years ago
Mark spent 1/3 of an hour reading his Bible. How many minutes did he read his Bible?
madam [21]

Answer:

20 minutes

Step-by-step explanation:

60/3=20

hope this helps :)

5 0
3 years ago
Select the correct answer from each drop-down menu. A parabola is given by the equation y = x2 − 2x − 3. The directrix of the pa
choli [55]

Answer:

Part 1) The directrix of the parabola is y=-4.25

Part 2) The focus of the parabola is F(1,-3.75)

Step-by-step explanation:

we have

y=x^{2}-2x-3

This is a vertical parabola open upward

we know that

If a parabola has a vertical axis, the standard form of the equation of the parabola is

(x - h)^{2}=4p(y - k)

where

p≠ 0

The vertex of this parabola is at (h, k).

The focus is at (h, k + p).

The directrix is the line y = k - p.

The axis is the line x = h.

step 1

Convert the equation of the parabola in standard form

y=x^{2}-2x-3

y+3=x^{2}-2x

y+3+1=x^{2}-2x+1

y+4=x^{2}-2x+1

y+4=(x-1)^{2}

so

(x-1)^{2}=(y+4) ----> equation in standard form

The vertex is the point (1,-4)

4p=1 ------> p=1/4

step 2

Find the directrix of the parabola

The directrix is the line y = k - p

we have

k=-4

p=1/4

substitute the values

y = k - p

y=-4-(1/4)=-17/4

y=-4.25

step 3

Find the focus of the parabola

we know that

The focus is at (h, k + p).

we have

h=1

k=-4

p=1/4

substitute

F(1,-4+1/4)

F(1,-3.75)

4 0
3 years ago
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Answer:

Just start with 14 and go up and then start at 150 and go down by 12 until they meet

7 0
3 years ago
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What is 50 + 34 - (87)-23 ?????????????
Alekssandra [29.7K]

Answer:

-26

Step-by-step explanation:

4 0
3 years ago
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