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inessss [21]
2 years ago
10

Solve the proportion

Mathematics
2 answers:
Svetradugi [14.3K]2 years ago
5 0

Answer:

y=5.6 or y=28/5

Step-by-step explanation:

4/5 = y/7

<em>⇒</em> Cross multiply:

4 × 7 = 5 × y

<em>⇒ </em>Multiply 4 × 7 & 5 × y:

28=5y

<em>⇒</em><em> </em>Solve the formed equation:

28=5y

⇒ Move all the terms containing y to the right side and the other values to the left side:

⇒ Add '-5y' to each side of the equation:

28+-5y=5y+-5y

⇒ Combine like terms: 5y+-5y=0

28+-5y=0

⇒ Add '-28' to each side of the equation:

28+-28+-5y=0+-28

⇒ Combine like terms: 28+-28=0

0+-5y=0+-28

-5y=0+-28

⇒ Combine like terms: 0+-28=-28

-5y=-28

⇒ Divide each side by '-5':

y=5.6 or y=28/5

<em>hope this helps </em><em>:)</em>

sergeinik [125]2 years ago
4 0

y =  \frac{28}{5}

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What is the value of 8+ h² when h = 3?
MrMuchimi

Answer:

17

Step-by-step explanation:

8 + h^2

Let h = 3

8 + 3^2

We find the value of 3^2 first using PEMDAS

8 + 9

Then add

17

The result is 17

4 0
1 year ago
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Which expression represents the inverse of the function f(x)=4x
Anton [14]

Answer:

f^{-1}(x) = \frac{x}{4\\}

Step-by-step explanation:

Let y = f(x) and rearrange making x the subject

y = 4x ( divide both sides by 4 )

x = \frac{y}{4}

Change y back into terms of x

f^{-1} (x) = \frac{x}{4\\}

4 0
3 years ago
The area of a rectangle painiting is given by the trinomial x^2-9x-36. what are the possible dimensions of the painting ? use fa
bagirrra123 [75]
<span> (x + 3) • (x - 12)
</span>

The first term is, <span> <span>x2</span> </span> its coefficient is <span> 1 </span>.
The middle term is, <span> -9x </span> its coefficient is <span> -9 </span>.
The last term, "the constant", is <span> -36 </span>

Step-1 : Multiply the coefficient of the first term by the constant <span> <span> 1</span> • -36 = -36</span> 

Step-2 : Find two factors of  -36  whose sum equals the coefficient of the middle term, which is  <span> -9 </span>.

<span><span>     -36   +   1   =   -35</span><span>     -18   +   2   =   -16</span><span>     -12   +   3   =   -9   That's it</span></span>


Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -12  and  3 
                     <span>x2 - 12x</span> + 3x - 36

Step-4 : Add up the first 2 terms, pulling out like factors :
                    x • (x-12)
              Add up the last 2 terms, pulling out common factors :
                    3 • (x-12)
Step-5 : Add up the four terms of step 4 :
                    (x+3)  •  (x-12)
             Which is the desired factorization

Final result :<span> (x + 3) • (x - 12)</span>
8 0
3 years ago
How can you check your work when you are finding arc measures?
Murrr4er [49]

After you measured it you can check if the measurement is correct by knowing radius and arc length using formula,

\alpha=\dfrac{l}{r}.

Hope this helps.

6 0
3 years ago
Need help pls i will give brainliest.
V125BC [204]

Answer:

g= 60°

i= 70°

h= 50°

Step-by-step explanation:

g=180-120 = 60°

i= 180-110 = 70°

h=180-60-70 = 50°

hope this helps =)

Kindly rate and mark brainliest. Thank you.

5 0
2 years ago
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