1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Svetlanka [38]
3 years ago
9

Can someone plz help me

Mathematics
2 answers:
lidiya [134]3 years ago
4 0

Answer:

The answer is C. <u>5</u><u><em>a² - </em></u><u>4</u><u><em>a</em></u><u> + 1 </u>

<h3>Step- by- Step:</h3>

<em>First you want to Distribute the Negative Sign:</em>

= 10a² + 3 − 5a + −1 (2 + 5a² − a)

= 10a² + 3 + −5a + (−1) (2) + −1 (5a²) + −1 (−a)

= 10a² + 3 + −5a + −2 + −5a² + a

<em>Add Like Terms:</em>

= 10a² + 3 + −5a + −2 + −5a² + a

= (10a² + −5a²) + (−5a + a )+( 3+ −2)

<u>= 5a² + −4a + 1</u>

<h3>Happy To Help! :)</h3>

Allisa [31]3 years ago
3 0

Answer:

i think its c

Step-by-step explanation:

You might be interested in
What are the measures of the angles in triangle ABC?
VMariaS [17]

Complete question :

A right triangle has side lengths AC = 7 inches, BC = 24 inches, and AB = 25 inches.

What are the measures of the angles in triangle ABC?

a) m∠A ≈ 46.2°, m∠B ≈ 43.8°, m∠C ≈ 90°

b) m∠A ≈ 73.0°, m∠B ≈ 17.0°, m∠C ≈ 90°

c) m∠A ≈ 73.7°, m∠B ≈ 16.3°, m∠C ≈ 90°

d) m∠A ≈ 74.4°, m∠B ≈ 15.6°, m∠C ≈ 90°

Answer:

c) m∠A ≈ 73.7°, m∠B ≈ 16.3°, m∠C ≈ 90°

Step-by-step explanation:

Given:

Length AC = 7 inches

Length BC = 24 inches

Length AB = 25 inches

Since it is a right angle triangle,

m∠C = 90°

To find the measures of the angle in ∠A and ∠B, we have :

For ∠A:

SinA = \frac{BC}{AB}

SinA = \frac{24}{25}

SinA = 0.96

A = Sin^-^1 = 0.96

∠A = 73.7°

For ∠B:

SinB = \frac{AC}{AB}

SinB = \frac{7}{25}

SinB = 0.28

B = Sin^-^1 = 0.96

∠B = 16.26 ≈ 16.3°

Therefore,

m∠A = 73.7°

m∠B = 16.3°

m∠C = 90°

7 0
3 years ago
Read 2 more answers
The Highway Safety Department wants to study the driving habits of individuals. A sample of 41 cars traveling on the highway rev
PolarNik [594]

Answer:

58,21    ≤   μ  ≤   61,79

Step-by-step explanation:

Normal Distribution

Poputation size        n = 41

Population mean         X  = 60

Population standard deviation    σ = 7

Question is: Confidence Interval 90 % ??

As Confidence Interval is 90 %   then  α  = 10 %

And as we are dealing with a two tail test

α/2  = 0,05

We look in Z table for values for  α/2  = 0,05  and find

z(α/2)  =  - 1,64      and    z(α/2) =  1,64

Then

Confidence Interval is

X - Zα/2 * σ/√n   ≤  μ  ≤  X + Zα/2 * σ/√n

60 - ( 1,64 ) * 7/√41  ≤   μ  ≤  60 + ( 1,64 ) * 7/√41

60 -  1,64 * 1,09375   ≤   μ  ≤  60 +  1,64 * 1,09375

60 - 1,79375    ≤   μ  ≤  60 +  1,79375

58,21    ≤   μ  ≤   61,79

4 0
4 years ago
Need help
Mashutka [201]
1. b + (5*2)
2. 3x +10y+5
The coefficient of y is 10
The constant is 5
4 0
3 years ago
Read 2 more answers
Rewrite the equation below in slope-intercept form.<br><br> 2y−8x=18
zavuch27 [327]

2y - 8x = 18

2y = 18 + 8x

y = 8x/2 + 18/2

y = 4x + 9

5 0
3 years ago
Read 2 more answers
A student determined that the area of the segment of OC shown above is A segment = 137.71ft
oksian1 [2.3K]
It would be C because it is right
8 0
4 years ago
Other questions:
  • Evaluate the integral <br> ∫1(x2x2−16)−−−−−−−√dx<br> using the substitution <br> x=4secθ
    14·1 answer
  • How can you determine the LCM of 2 prime numbers?
    14·2 answers
  • The graph below represents Dovans while riding his bike What would be an ordered pair on the line?
    11·1 answer
  • Write the standard form of the equation for the parabola shown in the graph.
    7·1 answer
  • solve this puzzle 1 times 2 times 3 times 4 times 100000000000000000000000000000000000000000000000000000000000000000000000000000
    7·1 answer
  • Uma pessoa comprou um terreno quadrado 81 m2 e deseja aumentar 19 m2 na area dele de que maneira ele continue em forma de quadra
    14·1 answer
  • Can someone help me pls,really need help with this.ty:)
    13·2 answers
  • Evaluate 12 : (6 – 2) + 12
    14·2 answers
  • The diameter of a circular rug measures 5 feet across.What area does the rug cover ?
    8·2 answers
  • Question 10 of 10
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!