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3 years ago

I am so dumb can you solve me this question PLEASE

Mathematics

1 answer:

docker41 [41]3 years ago

6 0

Answer:

I will just go down the table:

7.47 rounds to 7

8.367 rounds to 8

7.8 rounds to 8

7.352 rounds to 7

8.53 rounds to 9

7.51 rounds to 8

Step-by-step explanation:

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What is the x-intercepts of the function f(x)=-2x2-3x+20

Dmitry [639]

Hey,
The x-intercepts are the coordinates where the line intercepts the x-axis.

x-intercepts: $( \frac{16}{3}, 0)$

Cheers,
Izzy

5 0

3 years ago

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Draw and write to explain how these two problems are different 35-15=. And 43-26=.

Rashid [163]

35-15 is 20. and 43-26 is 17. These two are different because you are regrouping in the 2d problem, as in the first, you just subtract.

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3 years ago

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The graphs of the equation y = 4x + 1 and y - kx = 10 are perpendicular when k = _______?

Ann [662]

Answer:

$k=-\frac{1}{4}$

Step-by-step explanation:

we have

Line 1

$y=4x+1$

Equation in slope intercept form

The slope is equal to

$m_1=4$

Line 2

$y-kx=10$

$y=kx+10$

Equation in slope intercept form

The slope is equal to

$m_2=k$

we know that

If two lines are perpendicular, then their slopes are opposite reciprocal (the product of the slopes is equal to -1)

$m_1*m_2=-1$

substitute

$(4)(k)=-1$

$k=-\frac{1}{4}$

3 0

3 years ago

Show all your work for 3 4 and 5, please

drek231 [11]

Answer:

I can't see the picture so I can't sovle it

Step-by-step explanation:

7 0

3 years ago

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Josiah and kiri are each saving money josiah starts with 100$ in savings accound and adds 5$ per week . Kiri with 40$ in her sav

juin [17]

Answer:

12 weeks

Step-by-step explanation:

Josiah and kiri are each saving money josiah starts with 100$ in savings accound and adds 5$ per week . Kiri with 40$ in her savings account adds 10$ each week after how weeks Josiah and kiri will have the same amount of money in their savings account

Josiah:

100 + 5w

Kiri:

40 + 10w

Where,

w = number of weeks

After how weeks Josiah and kiri will have the same amount of money in their savings account

Equate the savings of the both of them

100 + 5w = 40 + 10w

100 - 40 = 10w - 5w

60 = 5w

w = 60/5

= 12

w = 12 weeks

Josiah and kiri will have the same amount of money in their savings account after 12 weeks

6 0

2 years ago