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Ludmilka [50]
3 years ago
8

Someone help me with this question please

Mathematics
1 answer:
Valentin [98]3 years ago
5 0

Answer:

We will need 16 tiles

Step-by-step explanation:

Each tile has a width of 1/4 ft

We want to know how many will fill 4 ft

This is a division problem

4 ft wall/ 1/4ft tiles =

copy dot flip

4 * 4/1 = 16

We will need 16 tiles

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Subtract and simplify (-y^2-3y-5)-(-3y^2-7y+4)
VikaD [51]

[ Answer ]

\boxed{2y^{2} \ + \ 4y \ - \ 9 }

[ Explanation ]

(-y^{2} - 3y - 5) - (3y^{2} - 7y + 4)

[Remove Parenthesis]

-y^{2} - 3y - 5 - (-3y^{2} - 7y + 4)

-(-3y^{2} - 7y + 4): 3y^{2} + 7y - 4

-y^{2} - 3y - 5 + 3y^{2} + 7y - 4

[Simplify] -y^{2} - 3y - 5 + 3y^{2} + 7y - 4: 2y^{2} + 4y - 9

= 2y^{2} + 4y - 9

\boxed{[ \ Eclipsed \ ]}

3 0
3 years ago
Use the parabola tool to graph the quadratic function f(x)=x2−12x+27.
Licemer1 [7]
Remember that for a quadratic function of the form a x^{2} +bx+c we can find its vertex with formula: h= \frac{-b}{2a} where h is the x-coordinate of the vertex; then we will find the y-coordinate by replacing h in our original function.

From the question know that a=1 and b=-12, so lets replace those values in our vertex formula to find the x-coordinate of our vertex:
h= \frac{-(-12)}{2(1)}
h= \frac{12}{2}
h=6
Now lets replace that value into our original function to find the y-coordinate of our vertex:
f(6)=6^{2} -12(6)+27
f(6)=36-72+27
f(6)=-9
Finally, we have our vertex (6,-9)

Now to graph our function we are going to take advantage of its line of symmetry; if the vertex is (6,-9) the line of symmetry of the parabola is x=6, so if we chose the point (6,0), our second point will have coordinates (3,0) as you can see in the picture.

8 0
3 years ago
Giving brainliest for CORRECT awnser. Check ALL that apply
julia-pushkina [17]

Answer:

answer is opption "A" hope it will help u

6 0
4 years ago
Read 2 more answers
How much water should we add to 35 kg of sugar syrup to change its concentration from 30% to 25%?
Otrada [13]

35kg - a mass of sugar syrup

30% of 35kg it's a mass of sugar

30% = 30 : 100 = 0.3

30% of 35kg = 0.3 · 35kg = 10.5kg - a mass of sugar

Add xkg water. Then we have (35 + x)kg of sugar syrup and still 10.5kg of sugar.

10.5kg is 25% of (35 + x)kg .

(35 + x) -- 100%

10.5  -- 25%     <em>multiply both sides by 4</em>

42   -- 100%

Therefore we have the equation:

35 + x = 42      <em>subtract 35 from both sides</em>

x = 7

<h3>Answer: We should add 7kg of water.</h3>
5 0
3 years ago
Show long division of 650/50
mel-nik [20]
Ik now the answer is 130
8 0
3 years ago
Read 2 more answers
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