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3 years ago

What is 3a+2b-5a+b simplified?

Mathematics

2 answers:

marishachu [46]3 years ago

7 0

Answer:

-a + b

Step-by-step explanation:

REY [17]3 years ago

3 0

Answer:

-2a + 3b

Step-by-step explanation:

Since you need to simplify the expression, you need to combine like terms. 3a and -5a are like terms because they both have the variable a. 3a + -5a equals -2a. 2b + b equals 3b. Since b would equal 1. If you combine them together, you get -2a + 3b.

Hope this helps!!

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find the least common denominator of the two fractions from part B to do this, list and compare the first five multiples of the

jeka57 [31]

Answer:

LCD = 24

Step-by-step explanation:

1 1/2 = 36/24

3/8 = 9/24

5/6 = 20/24

3 = 72/24

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7 0

3 years ago

A farmer has 3000 feet of fencing to use on a new enclosure. The new enclosure will go up against existing fencing so one side d

andrew11 [14]

Answer:

375000 ft^2

Step-by-step explanation:

From the statement that we have that it would be 1 time the length and 2 times the width because one side is not necessary and also we must take into account that it would be divided by 3 equal enclosures therefore we will use 1000 feet (3000/3) so Therefore, the perimeter would be equal to:

1000 = l + 2 * w

we solve for w:

l = 1000 - 2 * w

Also the area is equal to:

A = w * l

replacing:

A = w * (1000 - 2 * w)

A = 1000 * w - 2 * w ^ 2

We derive:

A '= 1000 - 4 * w

Let's equal 0:

1000 - 4 * w = 0

w = 1000/4

w = 250

replacing and we calculate l:

l = 1000 - 2 * 250

l = 500

A = 250 * 500

A = 15,000 ft ^ 2

Which means that for each subdivision the maximum area would be 125000 square feet and the total would be:

125000 * 3 = 375000 ft ^ 2

4 0

3 years ago

On a typical day, a jewelry store sells 8 bracelets. The data show the number of bracelets sold on each day for four weeks at a

mote1985 [20]

For which week would the mean of the data be a good estimate of the jewelry store's weekly sales throughout the year?

Answer: Week 4's mean would be a good estimate of the jewelry store's weekly sales throughout the year. Because the average of the Week 4's sales is 8. Also we can see the Week 4's data appears without outliers. So the option Week 4: 9, 7, 8, 8, 11, 6, 7 would be a good estimate of the jewelry store's weekly sales throughout the year.

<u>Explanation:</u>

Week 1's mean is:

$\frac{7+8+7+9+1+6+8}{7} =\frac{46}{7} =6.57$

Week 2's mean is:

$\frac{6+7+8+7+9+8+17}{7} =\frac{62}{7} =8.86$

Week 3's mean is:

$\frac{3+1+2+3+2+3+2}{7} =\frac{16}{7} =2.29$

Week 4's mean is:

$\frac{9+7+8+8+11+6+7}{7} =\frac{56}{7} =8$

Since the week 4's mean is 8, which is same as typical day's sale of bracelet's. Therefore, week 4 will be good estimate of the jewelry store's weekly sales throughout the year.

8 0

4 years ago

Read 2 more answers

Write an equation in standard form for the line that passes through (4, 4) and has a x-intercept of 3?

Nikolay [14]

Answer:

y=4(x-3)

Step-by-step explanation:

if x=3, subtract 3 from each side to get x-3=0

point (4, 4). That is, when x=4, y=4.

Plug those in and solve for a.

y=a(x-3)