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3 years ago

How do you solve: 2(b - 5) + 7b-4

Mathematics

2 answers:

Blizzard [7]3 years ago

8 0

Answer:

9b-14

Step-by-step explanation:

2(b-5)+7b-4

First you want to do what is in the parenthesis:

2 times b 2 times 5

The two is on the outside of the parenthesis which means you multiply it times the variable and the number.

Simply: 2b-10+7-+4

Now, you want to break the equation down. Both 7 and 2 have 'b' so you can add the two together.

2b+7b=9b

-10 and -4 can be put together. 4 is negative so you would subtract the two numbers.

-10-4= -14

Next, you want to take the two numbers 9b and -14 and put them into equation form.

9b-14

<u>I hope this helped! </u>

Alinara [238K]3 years ago

4 0

2(b-5)+7b-4
Solve 2(b-5) to get 2b-10
Combine your like terms 2b-10+7b-4
Solve 2b+7b to get 9b
Solve -10+(-4) to get -14
So your answer is
9b-14

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Which inequalities would have an open circle when graphed? Check all that apply. T Less-than-or-equal-to 25 -2. 5 Less-than-or-e

Alexandra [31]

The inequalities would have an open circle when graphed are as follows;

The inequality shows that it does not contain boundary point 5.

$\rm x>5.4$

The inequality shows that it does not contain the boundary point 1/2.

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The inequality shows that it does not contain the boundary point 0.

$\rm x>0$

<h3>What is a circle?</h3>

A round plane figure whose boundary (the circumference) consists of points equidistant from a fixed point (the center):

The graph will have an open circle only if it has the symbol < or > because it indicates that the boundary is not included.

The inequality shows that it does not contain boundary point 5.

$\rm x>5.4$

The inequality shows that it does not contain the boundary point 1/2.

$\rm \dfrac{1}{2}>x$

The inequality shows that it does not contain the boundary point 0.

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2 years ago

2. The picture shows a feeding trough that is shaped like a right prism. (a) The top of the feeding trough is open so that anima

777dan777 [17]

A)We have been given →
Hieght of trough = 5m
length of trough = 6m
Breadth of trough = 4m
so , As the top is opened for feeding animals.
Area of base = length× Breadth
= (6×4) m²= 24 m²
Area of Front and back face = Hieght × length
= (5×6) m² = 30m²
Area of side faces = hieght × Breadth
= (5×4) m²= 20 m²____________________________________
B)Total Surface area of trough will be given by formula - 2(lb+bh+hl)
= 2{(6×4)+(4×5)+(5×6)}
= 2{24+20+30}
= 2×74
= 148 m²
As we have been told top is open , so we will deduct top from Total surface Area to obtain Surface area →
(148-24) m²
(Area of top will be same as base area , that is 24m² as we have solved in A)
= 124m²
Answer→ Surface area of trough is 124m²
Read more on Brainly.com - brainly.com/question/4094485#readmore

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3 years ago

The store employee changed an 8.00 price sticker to 2.50 and placed it on the sale shelf

ruslelena [56]

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6 0

2 years ago

Read 2 more answers

Roberto’s cat weighed 6 3/4 pounds last year.Then the cat gained 1 1/2 pounds.How much does the cat weigh now?

hammer [34]

Add the gain and the last weight together
new weight = 6 3/4 + 1 1/2
or we can write it as
new weight = 6 + 3/4 + 1 + 1/2

Separate whole numbers and fraction
new weight = 6 + 3/4 + 1 + 1/2
new weight = 6 + 1 + 3/4 + 1/2

Simplify the whole numbers
new weight = 6 + 1 + 3/4 + 1/2
new weight = 7 + 3/4 + 1/2

Equalize the denominators of the fraction
new weight = 7 + 3/4 + 1/2
new weight = 7 + 3/4 + 2/4
new weight = 7 + 5/4

Because 5/4 is improper fraction, change it to mixed fraction
new weight = 7 + 5/4
new weight = 7 + 1 1/4
new weight = 7 + 1 + 1/4
new weight = 8 + 1/4
new weight = 8 1/4

The cat weights 8 1/4 pounds now

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2 years ago

Pleased help please please please please.

I am Lyosha [343]

Answer:

Step-by-step explanation:

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2 years ago