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gogolik [260]
3 years ago
7

Please help me with this because i don’t understand stand this

Mathematics
2 answers:
Tamiku [17]3 years ago
5 0

Note: complementary angles are two angles whose sum is 90⁰

DENIUS [597]3 years ago
4 0

Answer:

52 degrees

Step-by-step explanation:

Complementary angles have a sum of 90. This means when added they will equal 90. So to solve had the 2 expressions and set them equal to 90.

This looks like, (2x+18)+(6x-8)=90. Then, isolate the variable and solve.

  • Remove the parentheses

2x +18 +6x -8 =90

  • Add like terms

8x +10 =90

  • Subtract 10 from both sides

8x = 80

  • Divide both sides by 8

x=10

Finally, plug 10 in for x in the expression for angle b. This equals 52 degrees.

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The mean age of Lincoln's tee-ball team is 5. Suppose one of his 7-year-old teammates quits the team, but a 6-year-old joins the
aleksandrvk [35]

Answer:

Depending on the amount of children in the tee ball team, the mean may be lowered drastically or minorly. However, the mean would no longer be 5, although it may round up to five, if it is a decimal.

Step-by-step explanation:

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3 years ago
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Tennis player strikes a tennis ball from underneath with her racket. The ball is sent straight up with an initial velocity of 19
alekssr [168]

Answer:

18.42 m

Step-by-step explanation:

At that point, the ball will be static, with final velocity of 0.

The initial velocity is 19.

The acceleration due to gravity is -9.8 m/s^2.

We now have to use an equation of kinematics shown below:

v_f^2=v_0^2+2as

Where

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v_0 is the initial velocity

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s is the distance we are looking for

Lets substitute and find the answer:

v_f^2=v_0^2+2as\\0=(19)^2+2(-9.8)s\\-361=-19.6s\\s=18.42

7 0
4 years ago
To amend the U.S. Constitution, 3/4 of the 50 states must approve the amendment. If 35 states approve the amendment will the con
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What should the following equation be multiplied by in order to eliminate the fractions? 2y/3+1/3=y/2+1/6
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B

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3 years ago
PLZ NEED HELP ASAP!!! One of the solutions to the equation 5x^2+bx+12=0 is − 4/5. Find the other solution.
bonufazy [111]

Answer:

b=-19

Step-by-step explanation:

We know that one of the solutions is x=-4/5

That is a solution to x. So if we plug in (-4/5) into the x in the equation, then it should equal 0.

5(-4/5)^2+b(4/5)+12=0

Now, just solve for b.

5(16/25)+b(4/5)+12=0

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(4/5)b=-(76/5)

b=-19


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4 years ago
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