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3 years ago

8 POINTS I don’t understand this can anyone help?? If you answer all my other questions on BrainlyI will give you 30 points:)

Mathematics

1 answer:

koban [17]3 years ago

6 0

Answer:

I remember my teacher saying that when you get the answer you have to * when you get the answer

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In triangle △JKL, ∠JKL is right angle, and KM is an altitude. JK=24 and JM=18, find JL.

PolarNik [594]

Answer:

JL ≈ 32

Step-by-step explanation:

The triangle JKL has a side of JK = 24 and we are asked to find side JL. The triangle JKL is a right angle triangle.

Let us find side the angle J first from the triangle JKM. Angle JMN is 90°(angle on a straight line).

using the cosine ratio

cos J = adjacent/hypotenuse

cos J = 18/24

cos J = 0.75

J = cos⁻¹ 0.75

J = 41.4096221093

J ≈ 41.41°

Let us find the third angle L of the triangle JKL .Sum of angle in a triangle = 180°. Therefore, 180 - 41.41 - 90 = 48.59

Angle L = 48.59 °.

Using sine ratio

sin 48.59 ° = opposite/hypotenuse

sin 48.59 ° = 24/JL

cross multiply

JL sin 48.59 ° = 24

divide both sides by sin 48.59 °

JL = 24/sin 48.59 °

JL = 24/0.74999563751

JL = 32.0001861339

JL ≈ 32

8 0

3 years ago

Please help with math questions

frez [133]

60 is the answer I hope this is right

7 0

3 years ago

Read 2 more answers

"Find A and B so that the system below has the solution (1, -1)."

Mnenie [13.5K]

To do this you must plug in 1 and negative one for each x variable and each y. that solution is a point so the 1 must be tested for x and the -1 for y. do this and solve to find a and b so that it works in both equations!

3 0

4 years ago

Simplify completely and find the restrictions on the variable.

MatroZZZ [7]

Answer:

$\displaystyle \frac{x + 2}{x + 9}, \ x \neq -9, \ 12$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Terms/Coefficients
Factoring

Algebra II

Discontinuities
Domain Restrictions

Step-by-step explanation:

Step 1: Define

$\displaystyle \frac{x^2 - 10x - 24}{x^2 - 3x - 108}$

Step 2: Simplify

[Fraction] Factor numerator: $\displaystyle \frac{(x - 12)(x + 2)}{x^2 - 3x - 108}$
[Fraction] Factor denominator: $\displaystyle \frac{(x - 12)(x + 2)}{(x - 12)(x + 9)}$
[Fraction] Divide: $\displaystyle \frac{x + 2}{x + 9}$

We know that x cannot equal -9 because we would get a divide by 0 (undefined) error. We also know that x cannot equal 12 because it was canceled out when simplifying.

7 0

3 years ago

Multiply 214 by 112 using the standard paper and pencil algorithm

Artyom0805 [142]

If you multiply 214 by 112 you would get the answer 23,968.Believe me i did the math.

6 0

3 years ago

8 POINTS ￼I don’t understand this can anyone help?? If you answer all my other questions on BrainlyI will give you 30 points:)

8 POINTS I don’t understand this can anyone help?? If you answer all my other questions on BrainlyI will give you 30 points:)