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3 years ago

Help I don’t understand

Mathematics

1 answer:

coldgirl [10]3 years ago

3 0

Answer:

PB=5

Step-by-step explanation:

Since you know that BD=24, you also know that both segments BC and CD have the same value since they're congruent: 12. You also were given the value of PC. Using Pythagorean Theorm, Substitute 12 for a and 13 for c, so the equation would say

12^2+b^2=13^2

Simplify to get

144+b^2=169

Now subtract 144 from 169 and you get 25. That is b^2. All you have to do now is square root 25 to isolate b.

√25=5

So therefore,

b=5

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Simplify the expression. 5.3x - 9 + 7.6x

babunello [35]

Answer:

12.9x-9

Step-by-step explanation:

First you have to combine the like terms which are 5.3x + 7.6x= 12.9x. Then you just rewrite the equation 12.9x-9. You just leave the 9 by it self beacuse thers no other like terms.

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2 years ago

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Which number is a solution of the inequality c > 5? A) 2 B) 2.5 C) 5 D) 6.5

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Answer:

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Step-by-step explanation:

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Solve by substitution or elimination 4X – 3y = 7 4x + y = 11

Simora [160]

Answer:

(5/2 , 1)

Step-by-step explanation:

4X – 3y = 7

4x + y = 11

———————

Multiply a -1 to the bottom equation to get the 4x as a negative so it cancels out.

4x - 3y = 7

-4x - y = -11

——————

-4y = -4

Divide by -4

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Substitute the value of y into one of the equations and solve

4x - 3(1) = 7

4x -3 = 7

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Divide by 4

X = 10/4

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x = 5/2

Therefore the answer is (5/2, 1 )

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2 years ago

Simplify the expression by using a double-angle formula. −2cos2π91

Hatshy [7]

The Answer of −2cos2π91 = is -2

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3 years ago

what is the equation in point-slope form of the line passing through (0, 5) and (−2, 11)? (1 point) y − 5

makkiz [27]

According to the question, the line is through the points $(0,5)$ and $(-2,11)$

To calculate the slope using standard formula that is :

$m = \frac{(y(2)-y(1))}{(x(2)-x(1))} = \frac{(11-5)}{(-2-0)} =\frac{6}{-2} = -3$

Now the slope equation will be: $m(x(2)-x(1)) = (y(2)-y(1))$

$y-5 =(-3)(x-0) = y = -3(x)+5$

The slope-intercept form is: $y = -3x+5$

What is the equation of the line?

To represent the set of points in an algebraic form is known as the equation of line. The set of points represent lines in the coordinate system. The parameters can be calculated and those parameters are slope and y-intercept.

To learn more about the equation of the line from the given link:

brainly.com/question/14037984

#SPJ4

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10 months ago