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just olya [345]
2 years ago
11

Somebody pls help me im not very smart 7u7

Mathematics
1 answer:
timurjin [86]2 years ago
8 0

Answer:

1  \2 (7 + 12)6 \\ 1 \2(19)6 \\ 114 \times 1 \2 = 72

so therefore area is 72cm²

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Find the missing side or angle. Round to the nearest tenth.
Ivanshal [37]

Answer:

<h2>A = 22.6°</h2><h2>B = 67.4°</h2>

Step-by-step explanation:

Trigonometry:

S\frac{O}{H} C\frac{A}{H} T\frac{O}{A}

Use Sine when you have the Opposite and the Hypotenuse.

Use Cos when you have the Adjacent and the Hypotenuse.

Use Tan when you have the Opposite and the Adjacent.

The Opposite is opposite the angle.

The Adjacent is next to the angle

The Hypotenuse is opposite the right angle.

<u>Angle A:</u>

Use Tan when you have the Opposite and the Adjacent.

Tan-1\frac{5}{12} = 22.6198... ~ 22.6°

<u></u>

<u>Angle B:</u>

Use Tan when you have the Opposite and the Adjacent

Tan-1\frac{12}{5} = 67.380... ~ 67.4°

22.6° + 67.4° + 90° = 180°

6 0
3 years ago
Three integers have a mean of 7, a median of 5 and a range of 14. find the three integers​
inna [77]

Answer:

1, 5, 15

Step-by-step explanation:

First, I knew 5 was one of them because, 5 was the median and there were only three numbers. Next you have to find out the first and last number. Then, I looked at the mean. To get the mean, you have to add all of the numbers up and divide that by how many numbers there are. Since the mean is 7 and there are 3 numbers, I knew that the sum of all three numbers was 21 because, 21 divided by 3 is 7. Then I saw that the range of all the numbers was 14. The range is the difference between the largest and smallest number so I knew that the largest number subtracted by the smallest number had to be 14. Then, I saw that 15-1=14, and 1+5+15=21. So the three integers are, 1, 5 and 15.

4 0
3 years ago
Which of the following are solutions to the equation below?
katrin2010 [14]

First simplify then solve.

4x^2+20x+25=49 \\4x^2+20x-24=0 \\4(x^2+5x-6)=0 \\x^2+5x-6=0\Longrightarrow(x+6)(x-1)=0 \\\boxed{x_1=-6, x_2=1}

We find there are two solutions. In your case the correct answers are A, C, D

Hope this helps.

r3t40

Hope this helps.

r3t40

7 0
3 years ago
13p - 3 = 5p + 13 find p please
densk [106]
P=2. Hope this helps
7 0
3 years ago
Read 2 more answers
What is the slope of the line represented by the equation f(t)=2t-6?
mina [271]

- 4 -(12)Step-by-step explanation:

6 0
3 years ago
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