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tekilochka [14]
3 years ago
6

My question is in the picture I tried to multiply -7 on both sides and got -147 I don't know if it's correct or if it's the righ

t way to do it.

Mathematics
2 answers:
Mars2501 [29]3 years ago
7 0

Answer:

-3

Step-by-step explanation:

-7b = 21

/ -7     / -7

b = -3

Elena L [17]3 years ago
5 0

Answer:

-3

Step-by-step explanation:

Hope this helped have an amazing day!

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Factor completely 3x3 + 12x2 + 18x.
Elza [17]
Factor out a 3x:
3x(x2+4x+6)

Since you can't factor out the quadratic that's as far as it goes:

Answer:
3x(x2+4x+6)
4 0
3 years ago
Read 2 more answers
candice is going to replace the top of a table with a new piece of wood. How many square feet of wood would she purchase? 8ft. ,
lukranit [14]

Answer:

She  needs to purchase  50  square feet of wood .

Step-by-step explanation:

we can find the number of square feet of wood needed to purchase by finding the area of the table

The area of the table  =  area of the triangle + area of the rectangle

Area of the triangle:

Area of the triangle  = \frac{1}{2}(base \times height)

On substituting the values from the attached figure , we get

Area of the triangle  = \frac{1}{2}(4\times  5)

Area of the triangle  = \frac{20}{2}

Area of the triangle  = 10 square feet

Area of the rectangle:

Area of the rectangle = Length X  Breadth

On substituting the values from the attached figure , we get

Area of the triangle  = 5 \times  8

Area of the triangle  =  40 square feet

Thus the area of the table  = 10 +  40 = 50  square feet

5 0
3 years ago
On Monday 430 students went on a trip to the zoo all 9 buses were filled and seven students had to travel in cars how many stude
tankabanditka [31]

Answer: 47 students

Step-by-step explanation:

430 students went on a trip with the majority of them going on buses.

7 students however, had to use cars.

The number of students who used buses are:

= 430 - 7

= 423 students

The number of students in each bus is:

= No. of students taking buses / no. of buses

= 423 / 9 buses

= 47 students

7 0
2 years ago
Help me please thank you
dimaraw [331]

Answer:

You have to upload a pic of you're work?

Step-by-step explanation:

8 0
3 years ago
Please help due ASAP <br> Show workings please
Nostrana [21]

Step-by-step explanation:

I don't know if this is the right way to so it, but I would do it like this

since a triangle has 180 degrees, the angles all have to add up to 180

So 180 = a + b + c

we already know a, its 95

So 180 = 95 + b + c

now we know the equation for b, so we'll just put it there instead of the b, and since the angles are the same, we should put it instead of c too

180 = 95 + (4x-15) + (4x-15)

now subtract 95 from both sides

85 = (4x-15) + (4x-15)

add the xs and numbers together

85 = 8x - 30

now add the 30 to both sides

115 = 8x

divide by 8

your x is 14 3/8 or 14.375 or 115/8

that's not your angle, that's your x

5 0
3 years ago
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