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givi [52]
3 years ago
13

Please help me with these math questions!

Mathematics
1 answer:
guapka [62]3 years ago
6 0

Answer:

  • 7 : 7.36
  • 10 : 4
  • 11 : 1.1067
  • 12 : 0.8165
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In which line is a mistake first made when solving the following system of equations by substitution?
Law Incorporation [45]

Answer:

x=(-13/5), y=(-6/5)

Step-by-step explanation:

I will do step by step since I dont see a picture.

when you add them it gets rid of the y,

5x=-13

divide out the 5

x=(-13/5)

plug this into the first equation

2(-13/5)-y=-4

-5.2-y=-4

add 5.2 to each side

-y=1.2

divide out the negative

y=-1.2 or (-6/5)

5 0
3 years ago
Please Help!
Murljashka [212]
(82,82,) (x+y) answer short
8 0
4 years ago
Mrs. Jones is planning a field trip to the state capitol building for all of the sixth graders at her school. She needs $3.75 to
katen-ka-za [31]

Answer:

= $1226.25

Step-by-step explanation:

There are 327 students

Each student lunch is $3.75

She needs 327 of these $3.75 lunches

So 327 times $3.75

= $1226.25

5 0
3 years ago
Circle C has radius of 10 cm. Each of points B and D is on the midpoint of the radius. Find the area of the shaded region.
olya-2409 [2.1K]
Simple :)
Area of shaded part = are of 1/4 circle - area of both triangles.
Are of circle = pie r^2 so 100x3.14 = 314 cm2.
Area of triangle AOB= area of triangleDOE = bh/2= 5x10/2= 25 each
However, the traingles share a common area which is quad DOB(I)
Lets take traingle AOE, whose are is bh/2=10x10/2=50cm2.
50-area of triangle A(I)E= 50-(
7 0
3 years ago
Read 2 more answers
What is the answer to this? 5x+3=10x-17
weeeeeb [17]
<span>Simplifying 5x + 3 = 10x + -17 Reorder the terms: 3 + 5x = 10x + -17 Reorder the terms: 3 + 5x = -17 + 10x Solving 3 + 5x = -17 + 10x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10x' to each side of the equation. 3 + 5x + -10x = -17 + 10x + -10x Combine like terms: 5x + -10x = -5x 3 + -5x = -17 + 10x + -10x Combine like terms: 10x + -10x = 0 3 + -5x = -17 + 0 3 + -5x = -17 Add '-3' to each side of the equation. 3 + -3 + -5x = -17 + -3 Combine like terms: 3 + -3 = 0 0 + -5x = -17 + -3 -5x = -17 + -3
 Combine like terms: -17 + -3 = -20 -5x = -20

  Divide each side by '-5'. x = 4

 Simplifying x = 4</span>
7 0
3 years ago
Read 2 more answers
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