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3 years ago

Select all the expressions that are equivalent to 4x + 2. A 8x +4 B 1/2(8x + 4) C] 1/2(2x + 1) D 2 (2x + 1) E 2x + 2x +1+1

Mathematics

2 answers:

barxatty [35]3 years ago

8 0

Answer: B and D i looked it up and it said that

Step-by-step explanation:

hram777 [196]3 years ago

5 0

Answer:

D: 2(2x + 1)

the only one I could find sorry

Step-by-step explanation:

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Uh little confused on this one uh oh.

lana [24]

Answer:

I uhh need the question.. lol

Step-by-step explanation:

cat is 31%

dog is 42%

hamster is 19%

fish is 8%

62+84+38+16=200

62/200=0.31

84/200=0.42

38/200=0.19

16/200=0.08

Have a nice day!

7 0

3 years ago

Trail mix is sold in 1-pound bags.Mary will buy some trail mix and repackage it so that each of the 15 members of her hiking clu

inessss [21]

Answer:

6 bags.

Step-by-step explanation:

We have been given that trail mix is sold in 1-pound bags. Mary will buy some trail mix and repackage it so that each of the 15 members of her hiking club gets one 2/5 bag.

Let us find the number of pounds Mary will need to give to 15 members. As Mary wants to give 2/5 of 1 ounce bag of trail mix, so she will need 15 times 2/5 ounces to given to 15 members of her hiking club.

$\text{Pounds of trail mix needed to give to 15 members}=15\times \frac{2}{5}\text{ ounce}$

$\text{Pounds of trail mix needed to give to 15 members}=3\times 2\text{ ounce}$

$\text{Pounds of trail mix needed to give to 15 members}=6\text{ ounces}$

So Mary needs 6 pounds of trail mix to give to 15 members of her hiking club. As trial mix is sold in 1-pound bags, therefore, Mary should buy 6 bags to have enough of trail mix without any trail mix left over.

3 0

3 years ago

Explanation/Answer would be appreciated please

Gwar [14]

Answer: The solution for the system is (2, -7)

Step-by-step explanation:

Ok, here we have linear relationships.

A linear relationship can be written as:

y = a*x + b

where a is the slope and b is the y-axis intercept.

For a line that passes through the points (x1, y1) and (x2, y2), the slope can be written as:

a = (y2 - y1)/(x2 - x1).

In this case, we have two lines:

ya, that passes through:

(-8, -5) and (-3, -6)

Then the slope is:

a = (-6 - (-5))/(-3 - (-8)) = (-6 + 5)/(-3 + 8) = -1/5

now, knowing one of the points like (-3, - 6) we can find the value of b.

y(x) = (-1/5)*x + b

y(-3) = -6 = (-1/5)*-3 + b

-6 = 3/5 + b

b = -6 - 3/5 = -33/5

then the first line is:

ya = (-1/5)*x -33/5

For the second line, we know that it passes through the points:

(-8, -15) and (-3, -11)

Then the slope is:

a = (-11 - (-15))/(-3 -(-8)) = (-11 + 15)/(-3 + 8) = 4/5

The our line is:

y(x) = (4/5)*x + b

and for b, we do the same as above, using one of the points, for example (-3, -11)

y(-3) = -11 = (4/5)*-3 + b

b = -11 + 12/5 = -(55 + 12)/5 = -43/5

then:

yb = (4/5)*x - 43/5.

Ok, our system of equations is:

ya = (-1/5)*x -33/5

yb = (4/5)*x - 43/5.

To solve this, we suppose ya = yb

then:

(-1/5)*x + -33/5 = (4/5)*x - 43/5.

-33/5 + 43/5 = (4/5)*x + (1/5)*x

10/5 = 2 = (4/5 + 1/5)*x = x

2 = x

now we evaluate x = 2 in one of the lines:

ya = (-1/5)*2 -33/5 = -2/5 - 33/5 = -35/5 = -7

Then the lines intersect at the point (2, - 7), which is the solution for the system.

6 0

3 years ago

Read 2 more answers

What number should be placed in the box to help complete the division calculation? long division setup showing an incomplete cal

rusak2 [61]

Answer:

120

Step-by-step explanation:

Your description is a little different from below picture, but the logic is the same. The 1 in the tens position represents 10x12 = 120, hence 120 should be subtracted and leaves you with 67 to continue.