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Alenkinab [10]
3 years ago
15

Help find the missing number for x

Mathematics
1 answer:
elena55 [62]3 years ago
3 0

Answer:

41

Step-by-step explanation:

x² = 40²+9²

= 1600+81

= 1681

x= √1681 = 41

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35% is 7 out of what number?
o-na [289]

Answer:

The number is <u>20</u>.

Step-by-step explanation:

In this question, it is said that 35% of a number is equal to 7, then what is that number?

So, let the number be <em>x</em>.

Now, according to the question :

\begin{gathered} \begin{array}{l} \quad{\dashrightarrow{\sf{35 \% \: of \: x = 7}}}\\\\\quad{\dashrightarrow{\sf{\dfrac{35}{100} \: of \: x = 7}}}\\\\\quad{\dashrightarrow{\sf{\dfrac{35}{100}  \times x = 7}}}\\\\\quad{\dashrightarrow{\sf{\dfrac{35 \times x}{100} = 7}}}\\\\\quad{\dashrightarrow{\sf{\dfrac{35x}{100} = 7}}}\\\\\quad{\dashrightarrow{\sf{x = 7 \times \dfrac{100}{35}}}}\\\\\quad{\dashrightarrow{\sf{x =\dfrac{700}{35}}}}\\\\ \quad{\dashrightarrow{\sf{x = \cancel{\dfrac{700}{35}}}}}\\\\ \quad{\dashrightarrow{\sf{x =20}}}\\\\ \quad{\star{\underline{\boxed{\tt{\red{x =20}}}}}} \end{array}\end{gathered}

Hence, the number is 20.

\rule{300}{2.5}

3 0
2 years ago
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Makayla wants to put new capet in her rectangular shaped room.The length of the room is 9 feet, and the area of the room is 108
EleoNora [17]

Answer: 42 feet

Step-by-step explanation:

The solution is in the attachment

6 0
3 years ago
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Determine the standard form of the equation of the line that passes through (-5,0) and (0,-9)
bonufazy [111]

Answer:

9x+5y=-45

Step-by-step explanation:

To write the equation of a line we must have a slope and a point. To find the slope we use the slope formula and substitute (x,y) points in it as shown below:

m=\frac{y_2-y_1}{x_2-x_1}=\frac{-9-0}{0--5}=\frac{-9}{0+5}=\frac{-9}{5}=\frac{-9}{5}

Now that we have the slope, plug in the slope and choose one point to plug into the point slope formula. Use the point-slope form to write the equation, then simplify and convert into the slope intercept form.

(y-0)=-9/5(x--5)

y=-9/5(x+5)

y=-9/5x-9

Now convert to standard form, Ax+By=C.

y=-9/5x-9

9/5x+y=-9

9x+5y=-45



5 0
3 years ago
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Please Help Me with Q4!!
kondaur [170]

Answer:

0,-3

Step-by-step explanation:

It is where the lines intersect!

6 0
3 years ago
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4.1q = 34.85 ..........??
Finger [1]

Answer:

8.5

Step-by-step explanation:

34.85/4.1

4 0
4 years ago
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