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Sonbull [250]
3 years ago
12

4/x-7=7/x+6 What is x

Mathematics
1 answer:
marissa [1.9K]3 years ago
6 0

Answer:

21

Step-by-step explanation:

4x + 24 = 7x - 49  \\ then \: collect \: the \: same \: variable \\ 4x - 7x =  - 49 - 24 \\ x =  - 63 \div  - 3 = 21

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vitfil [10]

Answer:

SO you want me to figure out from year 2 or year4?

Step-by-step explanation:

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2 years ago
Determine whether the given vectors are orthogonal, parallel, or neither. (a) a = 9, 6 , b = −4, 6 orthogonal parallel neither (
labwork [276]

Answer:

(a) Orthogonal, (b) Neither, (c) Parallel, d( Orthogonal

Step-by-step explanation:

a and b are parallel is a=kb

a and b if a dot b = 0

(a) a dot b = (9)(-4)+6(6)=-36+36=0

  a and b are orthogonal

(b) a dot b = 40-7-21=12

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    a and b are neither parallel or orthogonal

(c) a dot b = -12-108-48=-168

    a=kb  -> k=-3/4 satisfies the equation

    a and b are parallel

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5 0
3 years ago
In ΔABC , angle C is a right angle.
guajiro [1.7K]

Answer:  Choice A. sin(A) = cos(B)

============================================================

Explanation:

The rule is that sin(A) = cos(B) if and only if A+B = 90.

Note how

  • sin(A) = opposite/hypotenuse = BC/AB
  • cos(B) = adjacent/hypotenuse = BC/AB

Since both result in the same fraction BC/AB, this helps us see why sin(A) = cos(B). Similarly, we can find that cos(A) = sin(B).

In the diagram below, the angles A and B are complementary, meaning they add to 90 degrees. So this trick only applies to right triangles.

The side lengths can be anything you want, as long as you're dealing with a right triangle.

3 0
3 years ago
What is the value of y when x = 43<br> A. 87<br> B. 85<br> C. 49<br> D. 45
BartSMP [9]

Answer:

A x

=

3

,

−

1x

=

3

,

−

1

Step-by-step explanation:

x

=

3

,

−

1

3 0
3 years ago
Hi everyone,can someone please help me with this question please help me I really really need help please answer it correctly
Allisa [31]

Answer:

the fourth which passed through (0;2)

7 0
3 years ago
Read 2 more answers
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