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labwork [276]
3 years ago
7

Solve 3x2 = -12x – 15. What is the answer and how did you work it out?

Mathematics
1 answer:
ki77a [65]3 years ago
7 0

Answer:

D.) x = -2 <u>+</u> i

Step-by-step explanation:

Work shown in image...

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It costs $8.50 per person and $25 per hour to rent a meeting room. Let p represent the number of people and h represent the numb
olchik [2.2K]

Answer:

x<10

Step-by-step explanation:

got it from the test

7 0
3 years ago
Please show your work :)
saul85 [17]
1. Slope-intercept form is y=mx+b, where m=slope and b=y-intercept. To answer this question, plug in the values they have given you.

y=mx+b
y=1/4x-5

2. To write an equation in slope-intercept form when given two points, use m=y2-y1/x2-x1

Remember: in an ordered pair, x comes first then y.

Plug the y- and x-values in. So, y2=6, y1=2 and x2=-2, x1=9

6-(-)2/-2-9= - 4/11.

The slope of your next equation would be m= - 4/11
3 0
3 years ago
GIVING 100 POINTS!!! An observer (O) is located 900 feet from a building (B). The observer notices a helicopter (H) flying at a
slamgirl [31]

Answer:

1035.33 feet

Step-by-step explanation:

OBH is a triangle and the sum of the angles of a triangle = 180

∠OBH = 90°

∠OHB = 180 -(49 + 90) = 41°

The law of sines that the ratio of each side of a triangle to the sin of the angle opposite it is the same

Thus

A/sinα  = B/sinβ = C/sinγ

where A, B and C are the three sides of the triangle and α, β, γ corresponding respectively to the angles opposite them.

Using the law of sines  

\frac{OB}{sin 41}  = \frac{BH}{sin49}

Therefore BH which is the height the helicopter is flying at is

BH = OB \frac{sin49}{sin41}

≈   1035.33 feet

8 0
2 years ago
Read 2 more answers
If the angles of a traingle are in the ratio 2:3:4 , Find Them​
DedPeter [7]

Answer:

40°, 60°, and 80°

Step-by-step explanation:

We know that the sum of the angles of a triangle is equal to 180°.

We can use this equation to solve for these angles:

180 = 2x + 3x + 4x

180 = 9x

20 = x

Then substitute the solution in for x to solve for the angles:

2(20) = 40°

3(20) = 60°

4(20) = 80°

Therefore, the angles are 40°, 60°, and 80°.

8 0
3 years ago
Which sentence can represent the inequality box+ 204?
Black_prince [1.1K]

Answer:

first one

Step-by-step explanation:

is at least

5 0
3 years ago
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