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krok68 [10]
4 years ago
12

SHOW WORK PLEASE FOR BRAINLEST!

Mathematics
2 answers:
Verdich [7]4 years ago
8 0

Answer:

11.3 g / mL

Step-by-step explanation:

V = l*w*h

   = 4.50*5.20 * 6.00

    =140.4 cm^3

We know that 1 cm^3 = 1 ml

We know density is  mass per volume

density = 1587 g/ 140.4 mL

            =11.3034188

Rounding to 3 sig figures

11.3 g / mL

stellarik [79]4 years ago
3 0

Answer:

11.3 g/cm³

Step-by-step explanation:

Volume = 4.5 × 5.2 × 6

140.4 cm³

Density = mass/volume

= 1587/140.4

= 11.3034188 g/cm³

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Nahee is running around the circular track with equation x2+y2=10000 at a speed of 2.9 meters per second. She starts at the poin
Nana76 [90]

Answer:

The coordinates are (58.1, - 81.4).

Step-by-step explanation:

The distance traveled by Nahee after 13 minutes at the rate of 2.9 m/sec along the arc of the circle with equation x² + y² = 100², will be (13 × 60 × 2.9) = 2262 m

Now, the perimeter of the circle is 2πr = 2 \times \frac{22}{7}\times 100 = 628.57 m

Therefore, after traveling three full circles and a half-circle the remaining arc length will be [2262 - (628.57 × 3) - (628.57 ÷ 2)] = 62 m

Therefore, Nahee will finish his run in the fourth quadrant.

Now, the angle made by the arc length of  62 m at the center will be = \frac{360}{628.57}\times 62 = 35.512^{\circ}

So, the angle made with positive x-axis will be (90° - 35.521°) = 54.488°

Now, the coordinates of the finishing point are (x,-y) = (rCos 54.488°, - rSin 54.488°) = (58.1, - 81.4) (Answer)

3 0
3 years ago
Write the quadratic equation whose roots are −2 and 2, and whose leading coefficient is 3.
Elena L [17]

Answer:

3x^2-12=0

Step-by-step explanation:

<u>Quadratic Equation</u>

A quadratic equation also called a second-degree equation is a special polynomial whose highest degree is two.

The general form of the quadratic equation is

ax^2+bx+c=0

Where a is known as the leading coefficient. Another form to write the quadratic equation is

a(x-x_1)(x-x_2)=0

Where x1 and x2 are the roots or zeroes of the equation.

We have the roots of the given equation are -2 and 2, and the leading coefficient is 3.

Plugging in the given values we have

3(x+2)(x-2)=0

Operating

3(x^2-4)=0

\boxed{3x^2-12=0}

4 0
4 years ago
HELP i have been waiting for 6 h
Dafna1 [17]

Answer:

john=$29.75

pam=$17

Step-by-step explanation:

total amount =$46.75

  john =(46.75/5.5)*3.5

           =$29.75

    pam=(46.75/5.5)*2

             =$17

4 0
3 years ago
Read 2 more answers
If Joe earns $25 per hour during a normal week (40 hours per week), but earns $37.50 per overtime, how much does he earn in 48 h
Svetradugi [14.3K]

Answer:

1300

Step-by-step explanation:

Regular time is 40 hours at 25 dollars per hour

Regular pay is 40*25 = 1000

He worked 48 hours, 48-40 =8, so he worked 8 hours overtime

8 hours at 37.50 overtime pay

8*37.50=300

His total pay is regular pay plus overtime pay

1000+300 = 1300

4 0
4 years ago
3. Line A is represented by the equation, y = + 5 (a) Write in slope-intercept form the equation of a line that is parallel to L
babunello [35]
Sorry, I wish I could help but I don’t understand this.
6 0
3 years ago
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