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3 years ago

SHOW WORK PLEASE FOR BRAINLEST!

Mathematics

2 answers:

Verdich [7]3 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]3 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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0.75y-1.5y+0.5=5 I need answers to this asap

Mnenie [13.5K]

Answer:

y = -6

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

0.75y−1.5y+0.5=5

0.75y+−1.5y+0.5=5

(0.75y+−1.5y)+(0.5)=5(Combine Like Terms)

−0.75y+0.5=5

Step 2: Subtract 0.5 from both sides.

−0.75y+0.5−0.5=5−0.5

−0.75y=4.5

Step 3: Divide both sides by -0.75.

Hope this helps!

-Josh

6 0

2 years ago

Solve the following new equation

mixer [17]

Answer:

<h3>x = 1.54 or x = - 4.54 to 2 decimal places</h3>

Step-by-step explanation:

x² + 3x - 7 = 0

Using the quadratic formula

a = 1 b = 3 c = - 7

$x = \frac{3 ± \sqrt{ {3}^{2} - 4(1)( - 7) } }{2(1)} \\ x = \frac{ - 3± \sqrt{9 + 28} }{2} \\ \\ x = \frac{ -3 ± \sqrt{37} }{2} \\ \\ x = \frac{ - 3 + \sqrt{37} }{2} \: \: \: \: \: or \: \: \: x = \frac{ - 3 - \sqrt{37} }{2} \\ \\ x = 1.54 \: \: \: or \: \: x = - 4.54$