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LenaWriter [7]
3 years ago
12

The total cost of four pens and seven mechanical pencils is $13.25. The cost of each pencil is 75 cents

Mathematics
2 answers:
alekssr [168]3 years ago
5 0
The answer which is not listed but it is 2 dollars per pen
Goshia [24]3 years ago
5 0
The answer is $2 for one pen. I hope this helps you :)
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Find the distance between the two points rounding to the nearest tenth (if necessary).
leonid [27]

Answer:

\boxed {\boxed {\sf d\approx 4.2}}

Step-by-step explanation:

The formula for distance is:

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2

Where (x₁, y) and (x₂, y₂) are the points.

We are given (-6, 6) and (-3, 3). If we match the value and its corresponding variable, we see that:

  • x₁= -6
  • y₁ = 6
  • x₂ = -3
  • y₂ = 3

Substitute the values into the formula.

d= \sqrt{ (-3 - -6)^2+(3-6)^2

Solve inside the parentheses.

  • -3 --6 = -3+6 = 3
  • 3-6 = -3

d= \sqrt{(3)^2+ (-3)^2

Solve the exponents.

  • (3)²= 3*3= 9
  • (-3)²= -3*-3 =9

d= \sqrt{9+9

Add.

d= \sqrt18

d= 4.24264069

Round to the nearest tenth. The 4 in the hundredth place tells us to leave the 2 in the tenth place.

d \approx 4.2

The distance between the two points is apprximately <u>4.2</u>

4 0
2 years ago
It's easy math but I am not very good at it, I need some help. can someone help me????? solve all 3of them please!
jonny [76]

Answer:

1. 458 - 247 = 211

2. 58.92 - 43.87 = 15.05

3. 51/8 - 15/8 = 4.5

Here you go ! Hope this helps !

4 0
3 years ago
Read 2 more answers
A theater has 20 seats per row each row is filled before the next row is used on Wednesday eight people are seated in the last r
tiny-mole [99]

Answer:

448

Step-by-step explanation:

3 0
3 years ago
At a conference of 250 people, 30% of the participants are French, 35% are Americans, 20% are Germans, and the rest are of other
gogolik [260]
30% of the 250 participants were French.
To find how many this is, convert the percent to a decimal and multiply the decimal by the total number of participants.
30% = 0.3
0.3 • 250 = 75
75 of the participants were French.
3 0
3 years ago
How many real solutions does t2 + 100 = 0 have ?
forsale [732]
T=-50 is the answer........
4 0
3 years ago
Read 2 more answers
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