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svp [43]
2 years ago
8

The graph of the equation -5x + By=18 is a line that passes through (-6,-2)

Mathematics
1 answer:
g100num [7]2 years ago
7 0

Answer:

6

Step-by-step explanation:

B(Y)=5x+18

input the values

-2B=5(-6)+18

-2B=-30+18

-2B=-12

B=-12/-2

B=6

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1 When the product of 4 and a number x is added to 12, the result is 16. What is the difference between x and 8?
Aleks [24]

Answer:

x = 1

Step-by-step explanation:

12 + 4 x = 16

Subtract 12 from both sides.

4x = 4

Divide 4 on both sides.

x = 1

3 0
3 years ago
Evaluate the expression shown below and write your answer as a fraction in simplest form.
Lena [83]

Answer:

1/42

Step-by-step explanation:

4/7 - 23/42 = 24/42 - 23/42 = 1/42

3 0
2 years ago
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Scores on a biology final exam are normally distributed with a mean of 220 and a standard deviation of 16. Determine the percent
IrinaK [193]

Answer:

86.64%

Step-by-step explanation:

Mean (μ) = 220

σ= 16

n= 4

mean score(X) = 220 -12

= 208

Using central limit theorem which says that for a sample of size (n), the standard error is

standard deviation /√n

= 16/√4

= 16/2

= 8

Standard error = 8

Using Z score

Z = (μ - x) / standard error

Z= (220 -208)/8

Z= 12/8

Z= 1.5

From the table, Z = 1.5 = 0.4332

Since the normal distribution curve is symmetrical, we have

0.4332*2

= 0.8664

Percentage = 0.8664*100

= 86.64%

6 0
3 years ago
What is the value of X ?
skelet666 [1.2K]

Answer:

D

Step-by-step explanation:

2² + 6² = x²

4 + 36 = x²

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7 0
2 years ago
BD and AC are chords that intersect at point Y.
Sindrei [870]

Answer:

4 units

Step-by-step explanation:

<u><em>The complete question is</em></u>

BD and AC are chords that intersect at point Y. A circle is shown. Chords B D and A C intersect at point Y. The length of B Y is 3, the length of Y D is 8, the length of A Y is x, and the length of Y C is 6. What is the length of line segment AY?

<u><em>The picture of the question in the attached figure</em></u>

we know that

The <u><em>Intersecting Chord Theorem</em></u> states that:  When two chords intersect each other inside a circle,the products of their segments are equal.

do

In this problem

(BY)(YD)=(AY)(YC)

substitute the given values

(3)(8)=(x)(6)

solve for x

24=6x\\x=24/6\\x=4\ units

therefore

The length of segment AY is 4 units

6 0
3 years ago
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