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natita [175]
2 years ago
5

Step-by-step answer?

Mathematics
2 answers:
yawa3891 [41]2 years ago
7 0

hi

a ( b +c) =  a*b +a*c

here a = -3  

        b = -4x

        c = +5

so :  

-3 ( -4x +5)  =  -3*-4x + -3* 5  

                   =  -12x + (-15)

                  = -12x -15

as I cannot add  -12x and  -15   ( they are two differents sort of figures )

so it's done

Alinara [238K]2 years ago
4 0

Answer:

12x - 15

Step-by-step explanation:

What you need to do for this is -3 · -4x + -3 · 5 = 12x+(-15). Which simplifies to 12x - 15.

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Rewrite without parentheses-8w^2x^6(7x^3+3w-6)
umka21 [38]

Answer:

-56w^2x^9-24w^3x^6-48w^2x^6

Step-by-step explanation:

Expand by distributing terms.

-(56w^2x^9+24w^3x^6-48w^2x^6)

Then remove the parentheses

6 0
3 years ago
A physics exam consists of 9 multiple-choice questions and 6 open-ended problems in which all work must be shown. If an examinee
Mariana [72]

Answer:

The questions and problem can be chosen in 1260 ways.

Step-by-step explanation:

Given that, a physics exam consists of 6 open-ended problem and  9 multiple choice questions.

The order of choosing does not matter.

So,we use combination to find ways.

The ways to choose  6 multiple choice from 9 is= ^9C_6

                                                                              =\frac{9!}{6!(9-6)!}

                                                                              =84

The ways to 2 open-ended question from 6  is= ^6C_2

                                                                              =\frac{6!}{2!(6-2)!}

                                                                             =15

Since pick 6 multiple choice out of 9 and 2 open-ended question out of 6 both are independent we have multiply both to find required ways.

Total number of ways is =(84×15)

                                        =1260.

6 0
3 years ago
What is the probability that the sun will not rise Tomorrow plz explain?
Luba_88 [7]

Answer:

the sun may rise or will not rise , so there are 2 chances

Step-by-step explanation:

so the probability is 1/2=0.5

6 0
3 years ago
A triangle has a 90° angle. What type of triangle is it?
SpyIntel [72]

Answer:

B) Right triangle

Step-by-step explanation:

Only right triangles have an angle that's 90°.

6 0
3 years ago
Read 2 more answers
Simplify the expression so there is only one positive power for the base, -5........ -5^7/-5^2
ELEN [110]
-5^7/-5^2=5^7/5^2= 5^(7-2)=5^5 this is the answer

3 0
3 years ago
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