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3 years ago

Square root of 7 hole 18/49

Mathematics

2 answers:

Kipish [7]3 years ago

6 0

19/7 is the correct answer

user100 [1]3 years ago

3 0

Answer:

19/7

Step-by-step explanation:

7 18/49 = 361/49 = √361/√49 = 19×19/7×7 = 19/7

Square root of 7 18/49 is 19/7

Hope this answer helps you :)

Have a great day

Mark brainliest

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A standard interior staircase has steps each with a rise (height) of 21 cm and a run (horizontal depth) of 24 cm. Research sugge

Alisiya [41]

Answer:

The staircase would extends 1.20 m if the changes were made.

Step-by-step explanation:

Acording tho the statement the total heigth is 5.04 m, that is 504 cm, each steps rises 21 cm. with this information we can calculte how many steps are in the whole staircase:

$Number steps= \frac{Total heigth}{each step} \\Number steps= \frac{504}{21} = 24 steps$

To calculate how much the staircase will extend, whe have to multiply the horizontal depth times the number of steps.

using the run of 24 cm that gives us a lengt of 576 cm and if the changes were made the new length will be 696 cm.

So the staircase would extend an amount of (696 - 576), that is 120 cm, or 1.20 m, if the changes were made.

6 0

3 years ago

Which is the equation of a hyperbola with directrices at x = ±3 and foci at (4, 0) and (−4, 0)?

Alex Ar [27]

Answer:

$\frac{x^2}{12}-\frac{y^2}{4}=1$

Step-by-step explanation:

Since our foci are located on the x-axis, then our major axis is going to be the horizontal transverse axis of the hyperbola:

Formula for hyperbola with horizontal transverse axis centered at origin

$\frac{x^2}{a^2}-\frac{y^2}{b^2}=1$
Directrices -> $x=\pm\frac{a^2}{c}$
Foci -> $(\pm c,0)$ where $a^2+b^2=c^2$
$a>b$

Since we are given our directrices of $x=\pm3$ and foci of $(\pm4,0)$ , then we can set up the directrices equation to solve for $a^2$ :

$x=\pm\frac{a^2}{c}\\ \\\pm3=\pm\frac{a^2}{4}\\ \\12=a^2$

Now we can determine $b^2$ to complete our equation for the hyperbola:

$a^2+b^2=c^2\\\\12+b^2=4^2\\\\12+b^2=16\\\\b^2=4$

Therefore, our equation for our hyperbola is $\frac{x^2}{12}-\frac{y^2}{4}=1$

5 0

2 years ago

If g(x) = x^2 - 4 find g (5) A. 6 B. 14 C. 21 D. 29

Marrrta [24]

C.21

5^2-4=21

Explanation

3 0

3 years ago

Read 2 more answers

Tim installs 50 square feet of his floor in 45 minutes. At this rate, how long does it take him to install 495 square feet?

77julia77 [94]

Answer:

99.5 minutes

Step-by-step explanation:

50=45

495=?

495×45÷50=99.5

6 0

3 years ago

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A square has an area of 256 square meters. How long is each side? _Meters by _ meters

Lorico [155]

Hello!

First, let's write an equation for the problem.
$\sqrt{256}$

Now, all you have to do is solve it.
$\sqrt{256}$ = 16

Each side is 16 meters.

I hope this helps!

7 0

3 years ago

Square root of 7 hole 18/49​

Square root of 7 hole 18/49