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
kompoz [17]
3 years ago
13

HELP ASAP! 20 POINTS! 5 QUESTIONS!

Mathematics
1 answer:
Ainat [17]3 years ago
6 0

Answer:

1. Let the unknown number be x

The phrase “8 and” means addition so that’s 8 +

5 times a number is multiplication so that’s 5 times x, or simply, 5x

So the correct equation would be 8 + 5x = 43

And the correct value for variable x is 7

8 + 35 = 43

2. A

3. Here we can see that there has to be a single unknown variable and using that variable we have to create an equation. That equation will ultimately help us to find the exact value of the variable. This way we can easily reach the answer that is asked in the question.

Let us assume the length of the first piece = x

Length of the second piece = 2x

Length of the third piece = 6x

Now we can get to the equation

x + 2x + 6x = 180

9x = 180

x = 180/9

 = 20

So the length of the first piece of the board is 20 feet.I hope i have explained the problem to your satisfaction and understanding

4. C

5. B

Step-by-step explanation:


You might be interested in
WILL GIVE BRAINLIEST PLZ HELP FAST!!! Jacque estimates the square root of 125 in the following way:
VladimirAG [237]

Answer:

<h2>5</h2>

Step-by-step explanation:

<h2>√125/5 = √25 since 125/5 = 25</h2><h2>√25 = 5</h2><h2 /><h2>Hopes this helps. Mark as brainlest plz!</h2>
6 0
3 years ago
Find the cosine of the angle between the planes x+y+z=0 and 4x+3y+z=1.<br><br> Answer: cosθ=
marta [7]

The angle between the planes is the same as the angle between their normal vectors, which are

<em>n</em><em>₁</em> = ⟨1, 1, 1⟩

<em>n</em><em>₂</em> = ⟨4, 3, 1⟩

The angle <em>θ</em> between the vectors is such that

⟨1, 1, 1⟩ • ⟨4, 3, 1⟩ = ||⟨1, 1, 1⟩|| ||⟨4, 3, 1⟩|| cos(<em>θ</em>)

Solve for cos(<em>θ</em>) :

4 + 3 + 1 = √(1² + 1² + 1²) √(4² + 3² + 1²) cos(<em>θ</em>)

8 = √3 √26 cos(<em>θ</em>)

cos(<em>θ</em>) = 8/√78

4 0
2 years ago
Minnie has 16 old posters and 25 new posters. Amanda has 25 old posters and 16 new posters. Who has more posters? Explain
Orlov [11]

Answer:

Minnie and Amanda have the same amount of posters.

Step-by-step explanation:

Add 16 and 25 posters and Minnie will have a total of 41 posters.

Add 25 and 16 posters and Amanda will have a total of 41 posters.

Each have the same amount of posters regardless if they are new or old.

3 0
3 years ago
Read 2 more answers
How can we represent a time that came before a specific zero point​
Oduvanchick [21]

Answer:

by stating what the time was before the zero point came.

Step-by-step explanation:

3 0
3 years ago
Need help Will give you the brainliest
marshall27 [118]

Answer:

The missing area for both sides is 48ft²

the missing dimension is 12ft

Step-by-step explanation:

Add all the areas up

12+36+12+36=96

192-96=96

96÷2=48

48÷4=12

5 0
3 years ago
Other questions:
  • I am a fraction greater than 1/2 and less than 6/8
    7·2 answers
  • Write an equation in polnt-slope form for the line through the given point with the given slope of (10,-9); m = -2 ​
    8·1 answer
  • Please help i need the answer quick :(
    10·1 answer
  • Chick fil a prints out a free sandwich coupon receipt every 7 receipts. What is the probability of not getting a coupon receipt
    15·1 answer
  • The gallup poll interviews 1600 people. of these, 18% say that they jog regularly. the news report adds: "the poll had a margin
    8·1 answer
  • I need to find the value of x!!!
    10·1 answer
  • -6x-27=6<br> give me the answer please .
    15·2 answers
  • Giving brainliest for this one !!<br> ( whoever answers the fastest and has a correct answer )
    15·2 answers
  • Stuck on this problem.. Help needed! (will mark as brainliest)
    8·1 answer
  • A scientist makes an acid solution by adding drops of acid to 1.2 L of water. The final volume of the acid solution is 1.202 L.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!