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3 years ago

Help I think it is c or d but heeellllpppp

Mathematics

2 answers:

qwelly [4]3 years ago

5 0

Answer:

it's b because -3 times -3 will be positive 9, and 3 times 3 will also be positive 9. c is wrong since

✓3 x ✓3 will be 3 instead of 9.

Dvinal [7]3 years ago

3 0

Answer:

Step-by-step explanation:

3 times 3 equals 9. -3 times -3 equals 9.

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The rental rate for a cement mixer has a flat rate of $40 plus $20 for each day of the rental. The graph shows points representi

____ [38]

Answer:

y = 20x + 40

Step-by-step explanation:

Given that the rental rate for a cement mixer has a flat rate of $40 plus $20 for each day of the rental.

That means fixed one time cost is $40 which doesn't changes with time.

If number of days is represented by "x" then rental cost for "x" days will be 20 times x or just 20x.

So the final cost will be sum of fixed cost and the rental cost per day which is:

20x+40

Now if "y" represents total rental cost over time then final cost equation can be written as:

y = 20x + 40

Hence final answer is y = 20x + 40y = 20x + 40.

8 0

3 years ago

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What is the length of leg s of the triangle below?

allsm [11]

B because in a 45-45-90 triangle, the leg lengths are the same (isosceles).

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4 years ago

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Based on the graph, what is the dependent variable, the equation relating the two variables, and how far will the dragonfly trav

ivann1987 [24]

Answer:

<h2>The dependent variable is distance, the equation is y = 20x, and the dragonfly will travel 480 miles.</h2>

Step-by-step explanation:

According to the graph, the dependent variable is Distance in miles, because it's on the vertical axis. Additionally, the independent variable is time in hours, because it's on the horizontal axis. However, you always put time as independent, because nothing affects time.

To find the equation, we just need to find the slope, using two points (0,0) and (2,40).

$m=\frac{y_{2} -y_{1} }{x_{2} -x_{1} }=\frac{40-0}{2-0}=20$

Therefore, the equation is $y=20x$ , which shows a direct proportion between variables.

Now, in 24 hours, it would travel

$y=20(24)=480$

It would travel 480 miles.

Therefore, the right answer is the second choice.

8 0

3 years ago

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Someone please help me

SOVA2 [1]

Gosh, when I saw that my mind went blank

6 0

3 years ago

Solve 7(z +2) - 3z =44

maw [93]

7(z +2) - 3z =44
Distribute the 7. Distributive property: a(b+c) = ab + ac

7z + 14 - 3z = 44
Simplify like terms.

4z + 14 = 44
Subtract 14 to both sides

4z = 30
Divide by 4 on both sides.

z = 7.5

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3 years ago

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