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Bogdan [553]
3 years ago
7

Need some help with this one

Mathematics
2 answers:
Rudik [331]3 years ago
3 0
What the question cause I need points
elena-14-01-66 [18.8K]3 years ago
3 0

Answer: all of the answers are underlined

82<u>0</u> R5

-----------

<u>4</u>,925

-48

----------

12

-12

-------------

0<u>5</u>

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Round 141.999 to the nearest tenth
Minchanka [31]
Hundredth: 142
Hundred: 100
Ten: 140
Tenth: 142<span />
7 0
3 years ago
Which are the solution of x2=-5x+8
yawa3891 [41]

rewrite the equation set = to 0.

x^2 + 5x - 8 = 0

The quadratic will not factor so you have to use the quadratic formula.

x = (-b + - sqrt(b^2 - 4ac))/2a

x = (5 + - sqrt(25 - 4* 1* -8))/2

x = (5 + - sqrt 57)/2


The x2is not the same as 2x. It is x^2. X tot he second power which makes the problem a quadratic equation. You cannot combine the terms x^2 and -5x because they so not have the same power.

4 0
3 years ago
The heights of two similar parallelograms are 16 inches and 20 inches. Their
Fittoniya [83]

Answer: x=\dfrac{25}{21}

Step-by-step explanation:

Area of parallelogram = Base x height

If two parallelograms are similar, then their corresponding sides are proportional.

That means, \dfrac{\text{Area of first parallleogram}}{\text{Area of second parallleogram}}=\dfrac{\text{height of first parallelogram}}{\text{height of second parallelogram}}

\Rightarrow \dfrac{3x+5}{9x}=\dfrac{16}{20}\Rightarrow \dfrac{3x+5}{9x}=\dfrac{4}{5}\\\\\Rightarrow 5(3x+5)=4(9x)\\\\\Rightarrow\ 15x+25 = 36x\\\\\Rightarrow\ 36x-15x=25\\\\\Rightarrow\ 21x = 25\\\\\Rightarrow\ x=\dfrac{25}{21}

Hence, x=\dfrac{25}{21}

3 0
3 years ago
In a right triangle, if sin 0 = 8/17 what is cos 0 explain?
Oliga [24]

Answer:

We have sin² x + cos² x =1 for all real x.

Therefore, sin² x = 1 – cos² x = 1 – (8/17)² = 1 – 64/289 = 225/289 = (15/17)².

However, remember that if x² = a², then x can be +a or –a.

Therefore, sin x can be either –15/17 or +15/17.

Everyone but Anirban so far has forgotten the negative solution.

Step-by-step explanation:

Given that sinθ=817 and cosθ<0 , we have: cosθ=−√1−sin2θ. cosθ=−√1−(817)2. cosθ=−√1−64289.

3 0
2 years ago
Help ASAP ! And explain too
Sedbober [7]

Answer:

4 inches

Step-by-step explanation:

it is given that

1/2" on the blueprint -----> 12 feet actual length

we can rearrange to say :

12 feet actual length ---> 1/2" on paper

or

1 foot actual length = (1/2)" ÷ 12 = 1/24" on paper

hence

96 feet actual length = 1/24 x 96 = 4 inches (answer)

3 0
3 years ago
Read 2 more answers
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