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3 years ago

15

The following table shows how many multiplication problems 444 students were able to solve in different amounts of time. For exa

mple, Murray solved 585858 problems in 222 minutes.

1 answer:

lesya692 [45]3 years ago

5 0

Answer:

342

Step-by-step explanation:

fvsvgdbhfnjmk,hlhgfdsdssddsdssd

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Marcie solved the following inequality and her work is shown below:. . −2(x − 5) − 12 ≤ 4 + 6(x + 3). −2x + 10 − 12 ≤ 4 + 6x + 1

BartSMP [9]

All steps that Marcie did are right, but she forgot to change sign in last step.

Consider the inequality

$-2(x - 5) -12 \le 4 + 6(x + 3).$

Then

$-2x+10-12 \le 4 + 6x+18.$

Group the numbers:

$-2x-2 \le 6x+22.$

Separate terms with x and without x in different sides:

$-2x-6x \le 22+2.\\-8x\le 24.$

The coefficient at x is -8 and it is negative, then dividing the inequality by -8 you have to change sign in opposite:

$x\ge -3.$

Answer: Marcie forgot to change sign in last step.

3 0

3 years ago

Read 2 more answers

Find an equation of a plane containing the line r = ⟨−5, 1, 0⟩ + t ⟨7, −8, 4⟩ which is parallel to the plane 4x + 1y −5z = −24.

Ipatiy [6.2K]

1-Find an equation of the plane.

The plane that passes through (8,0,-1)

and contains the line x=4-4t , y=1+5t , z=4+2t

------------

2-Find an equation of the plane.

The plane that passes through the point (-2,2,2)

and contains the line of intersection of the planes

x+y-z=3 and 3x-y+5z=5

---------------

3-Find an equation of the plane.

The plane that passes through the line of intersection of the planes x-z=1 and y+2z=2

and is perpendicular to the plane x+y-4z=3

------------

4-Where does the line through

<span>(1, 0, 1) and (4,-2,3)intersect the plane</span><span>x + y + z = 8 ?</span>

8 0

3 years ago

Solve and factorise x^2-8x+16=0

goblinko [34]

Answer:

x=4x therefore the answer is 4x

Step-by-step explanation:

x^2-8x+16=0

7 0

3 years ago

Mr adams spent $36.25 on 12.5 pounds of nestle crunch. determine the cost per pound of nestele crunch, showing each step in the

Mkey [24]

What you know:

Mr. Adams spent $36.25 on 12.5 pounds.

All you do to find the cost per each pound is:

36.25/12.5

Your answer:
$2.9 dollars per pound.

8 0

3 years ago

In problems 6 and 7, write an inequality that describes each

Mazyrski [523]

6.
c is less than or equal to 1 because a dollar is the maximum value, therefore everything else in the store has to be less.
7.
If the population is at least a billion, it can only go up from there, therefore it is 1,000,000,000 is less than or equal to p

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2 years ago

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