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Verdich [7]
3 years ago
5

(5x2 + 2x + 11) - (7 + 4x - 2x2)

Mathematics
2 answers:
Afina-wow [57]3 years ago
7 0
Your answer should be D!
storchak [24]3 years ago
6 0
The answer is 7x^2 - 2x + 4, so answer D. 
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What is the value of -4D^2+15D^2÷5 for D=1
lutik1710 [3]

Plug in D:

-4(1)^2 + 15(1)^2/5

-4 + 15 / 5

-4 + 3 = -1

6 0
3 years ago
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A blueprint for a house has a scale of 1:5 feet. The living room has a length of 2.5 inches and a width of 3 inches. What is the
stiks02 [169]

Answer:

Step-by-step explanation:

Set this up as a proportion, with inches on the top and feet on the bottom for our scale.  We will find the actual length first, then we'll find the width.

\frac{in}{ft}:\frac{1}{5}=\frac{2.5}{x}

Cross multiply to get that the actual length is 5(2.5) = 12.5 feet.  Now for the width:

\frac{in}{ft}:\frac{1}{5}=\frac{3}{x}

Cross multiply to get that the actual width is 5(3) = 15 feet.

If you want the area of the room, multiply the length times the width to get

A = 15(12.5)

A = 187.5 feet squared

7 0
3 years ago
Classify the following triangle. Check all that apply.
diamong [38]
There’s nothing to answer or any work for people to respond
6 0
3 years ago
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Omg help with my homework PLEASE ASAP. what donu graph and how do i suow my workkkkk whats the answer
Gnoma [55]

Answer:

you have to start with you b which in your problem is 5 so put a point at 5 on the y-axis on your graph. then with the M (the fraction numbers) you have to move either up or down depending if there is a negative number. so yours is 1/2 so then you would start at the 5 point and go up 1 and right 2 then you just keep repeating till you get a few points and can make a line then you just do the same thing for the other equation. start at 3 on the y-axis and then go up 3 and right 4 then just keep repeating till you get a few point and can create a line at the end the lines should cross each other like perpendicular lines

Step-by-step explanation:

hope this helps:)

7 0
2 years ago
Each sales associate at an electronics store has a choice of the two salary option shown below: 115 per week plus 9.5% commissio
Annette [7]
$450 per week earns you $450 total per week, for $<span>23,400 total
$115 per week earns you that plus 9.5% of $125,000, which is $</span>11,875, plus $5,980 which is $<span>17,855 total
There is a $</span><span>5,545 difference, making the $450 a week a better deal</span>
5 0
3 years ago
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