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vovangra [49]
4 years ago
10

Can someone help me with these?!

Mathematics
1 answer:
bagirrra123 [75]4 years ago
7 0

-10-15= -25

-3+(-5) - positive sign and negative sign = negative sign

-3-5= -8

-5x - 2y² + 1

Use the substitution method

-5(4)-2(-2)^2+1

(-2)(-2)= 4

-20-8+1= -28+1

= -27

Answers :

-10-15= -25

-3+(-5)=-8

-5x - 2y² + 1= -27

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sweet-ann [11.9K]

Answer:

60 different ways.

Step-by-step explanation:

We have been given that you have 5 reindeer, Bloopin, Rudy, Ezekiel, Prancer, and Balthazar, and you want to have 3 fly your sleigh. You always have your reindeer fly in a single-file line. We are asked to find the number of ways in which we can arrange reindeer.

We will use permutations to solve our given problem.

The number of way to choose r objects from a set of n objects is ^nP_r=\frac{n!}{(n-r)!}.

Upon substituting our given values in permutations formula, we will get:

^5P_3=\frac{5!}{(5-3)!}

^5P_3=\frac{5!}{2!}

^5P_3=\frac{5\times 4\times 3\times 2!}{2!}

^5P_3=5\times 4\times 3

^5P_3=60

Therefore, you can arrange your reindeer in 60 different ways.

4 0
3 years ago
What is the value a and b in<br> The equation<br><br> a(3x -8)=b-18x
Misha Larkins [42]

Answer:

a=\frac{b-18x}{3x-8}\\b=3ax-8a+18x

Step-by-step explanation:

<u>Solving for A:</u>

a(3x-8)=b-18x - Given

\frac{a(3x-8)}{(3x-8)}=\frac{b-18x}{(3x-8)} - Divide both sides by 3x-8 to isolate a

a = \frac{b-18x}{3x-8} - Simplify

<u>Solving for B:</u>

<u />a(3x-8)=b-18x - Given

3ax-8a=b-18x - Distribute the parenthesis (distributive property)

3ax-8a+18x=b - Add 18x to both sides to isolate b

5 0
3 years ago
ΔABC has vertices A(0,10), B(4,10), and C(-2,4).
laiz [17]

A simple diagram will show you the intersection of altitudes is in the 2nd quadrant. It must have x-coordinate -2, as the altitude to the "base" y=10 must be the vertical line through (-2, 4).

The appropriate choice is ...

... C: (-2, 12)

8 0
4 years ago
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Contact [7]

Answer:

Zero: (1,0)

Domain: -infinity, + infinity

Range:  -infinity, + infinity

Step-by-step explanation:

I know that the zero answer is right because zero is just another name for x intercept. Range is all possible y values and domain is all possible x values

7 0
3 years ago
THE QUESTION IS IN THE PHOTO. HELP​
earnstyle [38]

Answer:

The constant is 3

Step-by-step explanation:

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6/2 = 3

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3 years ago
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