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4 years ago

Someone explain the answer?

Mathematics

1 answer:

Eduardwww [97]4 years ago

5 0

13/5 does not equal 3 3/5.

Let's make 3 3/5 an improper fraction.

Multiply 3*5+3= 18

18/5 does not equal 13/5.

I hope this helps!

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What is the relationship between \blueD{\angle a}∠astart color #11accd, angle, a, end color #11accd and \greenD{\angle b}∠bstart

Elza [17]

Answer:

Complementary angles.

Step-by-step explanation:

Notice that $\angle a=\angle AXY, \angle b = \angle YXB$ and $\angle BXC = 90\°$ , by given.

$\angle AXB = \angle AXY + \angle YXB$ , by sum of angles.

$\angle AXB + \angle BXC = 180\°$ , by supplementary angles definition.

$\angle AXB + 90\° = 180\°\\\angle AXB = 180\° - 90\°\\\angle AXB = 90\°$

Which means,

$\angle AXB = \angle AXY + \angle YXB = 90\°$

Therefore, $\angle a + \angle b = 90\°$ , in other words, angles a and b are complementary by definition.

4 0

3 years ago

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Can you please help me find the area of the parallelogram!! can you show your work plz

Tom [10]

Heads up: you can use a calculator to find the area. Just search up area calculator and it’ll show up and give you the answer :-) Hope this helps!

8 0

3 years ago

1.Which explains why the sequence 216, 12, 2/3 is arithmetic or geometric?

Free_Kalibri [48]

Hi Timothy,

1.Which explains why the sequence 216, 12, 2/3 is arithmetic or geometric?

Answer - C.The sequence is geometric because it decreases by a factor of 1/18

The reason I chose C is the fact that the numbers go down greatly, and it has to to be geometric because when you are trying to solve the problem with arithmetic you don't get and exact rule for how to solve the problem.

6 0

3 years ago

There are 6 sixth graders , 7 seventh graders , and 8 eight graders entered in a contest.

fgiga [73]

Answer:

See below ~

Step-by-step explanation:

P (6th grader)

No. of 6th graders / Total students
6 / 6 + 7 + 8
6/21
2/7

P (6th grader after)

No. of 6th graders - 1 / Total students - 1
6 - 1 / 21 - 1
5/20
1/4

Question 1 : P (Both 6th graders)

P = P (6th grader) × P (6th grader after)
P = 2/7 x 1/4 = 2/28 = 1/14

Question 2 : P' (Both 6th graders)

P' = 1 - P
P' = 1 - 1/14
P' = 13/14

4 0

2 years ago

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Which table describes the behavior of the graph of f(x) = 2x3 – 26x – 24?

In-s [12.5K]

Answer:

For x∈ {-∞,-3} y<0, below x-axis

x∈ {-3,-1} y>0, above x-axis

x∈ {-1,4} y<0, below x-axis

x∈ {4,∞} y>0, above x-axis

Step-by-step explanation:

f(x)= $2x^{3}-26x-24$

$2x^{3}-26x-24$ =0

$2x^{3}-26x-24=0\\2x^{3}-2x-24x-24=0\\2x(x^{2} -1)-24(x+1)=0\\2x(x+1)(x-1)-24(x+1)=0\\(x+1)(2x^{2} -2x-24)=0\\=> x+1=0 => x_{1}=-1\\$

$=> 2x^{2} -2x-24=0\\=>2(x^{2} -x-12)=0\\=> x^{2} -x-12=0\\=> x^{2} -4x+3x-12=0\\=> x(x-4)+3(x-4)=0\\=> (x-4)(x+3)=0\\$

$=> x-4=0\\=> x_{2}=4\\=> x+3=0\\=>x_{3}=-3\\$

For x∈ {-∞,-3} y<0, below x-axis

x∈ {-3,-1} y>0, above x-axis

x∈ {-1,4} y<0, below x-axis

x∈ {4,∞} y>0, above x-axis

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3 years ago

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