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4 years ago

How i do that and plese said how ro do the ploblem not only the answer

Mathematics

1 answer:

Rzqust [24]4 years ago

4 0

Can you please provide a clear picture so I can try to help.That one is kinda blurry

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Hey! Can someone please help me with this question? Really appreciate it

Olin [163]

Answer:

$d = 0.112* 10^3$

Step-by-step explanation:

Given

$h = 8.4 * 10^3$

$d = \sqrt{\frac{3h}{2}}$

Required

Find d

We have:

$d = \sqrt{\frac{3h}{2}}$

Substitute: $h = 8.4 * 10^3$

$d = \sqrt{\frac{3*8.4 * 10^3}{2}}$

$d = \sqrt{\frac{25.2 * 10^3}{2}}$

$d = \sqrt{12.6 * 10^3}$

Express as:

$d = \sqrt{1.26 *10* 10^3}$

$d = \sqrt{1.26 *10^4}$

Split

$d = \sqrt{1.26} *\sqrt{10^4}$

$d = 1.122* 10^2$

To write in form of: $a * 10^b$

The value of a must be: $0 \le a \le 1$

So, we have:

$d = 0.1122* 10 * 10^2$

$d = 0.1122* 10^3$

Approximate

$d = 0.112* 10^3$

3 0

3 years ago

8) Sandy tells you that she drew a right triangle with the side lengths of 8.4 cm, 14 cm, and 11.2 cm.

diamong [38]

Answer:

Yes, she can drew a right triangle with these sides

Step-by-step explanation:

To answer this question we first have to prove the Pythagorean theorem

h = hyoptenuse

a = leg 1

b = leg2

h² = a² + b²

We have to replace the values that they gave us in this formula

The hypotenuse always has to be the longest side of a right triangle

(14cm)² = (11.2cm)² + (8.4cm)²

196cm² = 125.44cm² + 70.56cm²

196cm² = 196cm²

As we can see, equality is fulfilled, so she is correct

3 0

4 years ago

The estimate of a bookcase was 78.25in .The actual measurement was 75.50in. To the nearest tenth of a percent ,what was the perc

OLEGan [10]

Answer:

3.5% Error

Step-by-step explanation:

I used this equation - 100 * (1 - (75.5/78.25)) = 3.514376...(Rounded to the tenths place you get 3.5)

Breakdown: You want to get your error to do this first you get your percent that was correct which is - (75.5/78.25)

You then subtract this by one because this will give you your margin of error as a decimal hence - (1 - (75.5/78.25))

Lastly, multiply this by 100 because you want to convert the decimal into a percent then round to the nearest tenth of a percent resulting in 3.5% error.

4 0

3 years ago

30 POINTS AVAILABLE

kherson [118]

Answer:

$\large\boxed{(x-2)^2+(y-1)^2=34}$

Step-by-step explanation:

The equation of a circle in standard form:

$(x-h)^2+(y-k)^2=r^2$

(h, k) - center

r - radius

We have the endpoints of the diameter: (-1, 6) and (5, -4).

Midpoint of diameter is a center of a circle.

The formula of a midpoint:

$\left(\dfrac{x_1+x_2}{2};\ \dfrac{y_1+y_2}{2}\right)$

Substitute:

$h=\dfrac{-1+5}{2}=\dfrac{4}{2}=2\\\\k=\dfrac{6+(-4)}{2}=\dfrac{2}{2}=1$

The center is in (2, 1).

The radius length is equal to the distance between the center of the circle and the endpoint of the diameter.

The formula of a distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Substitute the coordinates of the points (2, 1) and (5, -4):

$r=\sqrt{(5-2)^2+(-4-1)^2}=\sqrt{3^2+(-5)^2}=\sqrt{9+25}=\sqrt{34}$

Finally we have:

$(x-2)^2+(y-1)^2=(\sqrt{34})^2$

3 0

4 years ago

Chioe stops for lunch in a town that

mina [271]

Answer:

B, C, E

Step-by-step explanation:

Tips = $20 × 15%

$20 × $\frac{15}{100}$

Total = $20

Without tips = $17

Things that can buy for $17 are B, C, E

6 0

3 years ago