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S_A_V [24]
3 years ago
7

Yolanda is buying supplies for school.She buys n packages of pencils at 1.40 per package and m pads of paper at 1.20 each.what d

oes each term in the expression 1.4n+1.2m represent? What does the entire expression represent
Mathematics
1 answer:
oksian1 [2.3K]3 years ago
5 0
1.4n + 1.2m

1.4n.....the n represents the number of packs of pencils bought.....and each pack of pencils cost 1.4 (which is the same as 1.40)

1.2m...the m represents the number of pads of paper bought...and each pad of paper cost 1.2 (which is the same as 1.20)

the entire expression represents the total cost spent on buying n packs of pencils and m pads of paper
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Simplify this expression.<br><br> (1-3k) + (2 + 2.5k)
Crank

(1 - 3k) + (2 + 2.5k)

= 1 - 3k + 2 + 2.5k

= (1 + 2) + ( - 3k + 2.5k)

= 3  + ( - 0.5k)

= 3 - 0.5k

7 0
3 years ago
Question 10 (2 points)
igomit [66]

Answer:

a = 2

Step-by-step explanation:

To find the missing length we can use the Pythagorean theorem. Also, because it's a right triangle it makes it the perfect candidate!

The Pythagorean Theorem states:

a^2 + b^2 = c^2

Next, we substitute the letters with our given numbers (keep in mind that c is the hypotenuse which is the side facing the right angle)

a^2 + 2.1^2 = 2.9^2

Finally, we solve our equation (hint: use the calculator if needed)

a^2 = 4 (your answer is not final yet. You have to take the square root of both numbers)

a = 2 (Now that's the final answer!)

7 0
3 years ago
Can someone please answer this I don’t understand!
Dovator [93]

The coordinates of X are (5, 11).

Solution:

Given points of the line segment are P(2, 2) and T(7, 17)  

Let X be the point that partitions the directed line segment PT in the ratio 3 : 2

Using section formula, we can find the coordinate of the point that partitions the line segment.

Section formula:

$X(x, y)=\left(\frac{m x_{2}+n x_{1}}{m+n}, \frac{m y_{2}+n y_{1}}{m+n}\right)

Here, x_{1}=2, y_{1}=2, x_{2}=7, y_{2}=17 and m = 3, n =2

Substitute these in the section formula,

$X(x, y)=\left(\frac{3 \times 7+2 \times 2}{3+2}, \frac{3 \times 17+2 \times 2}{3+2}\right)

            $=\left(\frac{21+4}{5}, \frac{51+4}{5}\right)

           $=\left(\frac{25}{5}, \frac{55}{5}\right)

           =(5, 11)

X(x, y) = (5, 11)

The coordinates of X are (5, 11).

6 0
3 years ago
A halyard 16ft long is cut into two pieces. If the L is the length of one piece, express the length of the second piece in terms
jeka94
If you cut length L from the 16 ft halyard, you are subtracting the value of L from 16. This means that the second piece should be 16-L feet long.
5 0
3 years ago
Read 2 more answers
What is the value of x? Enter your answer in the box x=
Vadim26 [7]

Answer: 45°

Step-by-step explanation:

There are 180 degrees in a triangle so

180-80=100-55=45°

7 0
3 years ago
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