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Ket [755]
3 years ago
15

Type the correct answer in each box. Use numerals instead of words.

Mathematics
1 answer:
lora16 [44]3 years ago
8 0

Answer:

the answer is -4x^2-3x-5

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a 400 g of a liquid of density 1.6g/cm3 is made from mixing liquids of density 1.2g/cm3 and 1.8g/cm3 find the mass of the liquid
gogolik [260]

Answer:

133.33g

Step-by-step explanation:

Let the:

Mass of 1.2g/cm³ of liquid = x

Mass of 1.8g/cm³ of liquid = y

From our Question above, our system of equations is given as:

x + y = 400........ Equation 1

x = 400 - y

1.2 × x + 1.8 × y = 1.6 × 400

1.2x + 1.8y = 640..... Equation 2

We substitute, 400 - y for x in Equation 2

1.2(400 - y) + 1.8y = 640

480 - 1.2y + 1.8y = 640

- 1.2y + 1.8y = 640 - 480

0.6y = 160

y = 160/0.6y

y = 266.67 g

Solving for x

x = 400 - y

x = 400 - 266.67g

x = 133.33g

Therefore, the mass of the liquid of density 1.2g/cm³ is 133.33g

7 0
3 years ago
If 5/8ths is equal to $531.25 what is the remaining portion of the number.
Nimfa-mama [501]
5/8 = .625
531.25 / .625 = 850
850 - 531.25 = $318.75

7 0
3 years ago
Scientific notation of 47300
Reil [10]
4.7 x 10^4
or 5 x 10^4

<span>The scientific notation of 70, 030, 000. To find the scientific notation of this value </span><span><span>
1.  </span>We first move the period which separates the whole number from the decimal number which is located after the numbers of the given value.</span> 
<span><span>2.  </span>We move it in the very recent order number which is seventy million, seven and zero.</span> <span><span>
3.  </span>It becomes 7.003</span>
<span><span>4.  </span>Thus we count how many moves we did from the tens to the ten million order place.</span> <span><span>
5.  </span>7.003 x 10^7 </span>


6 0
3 years ago
If a = 6 and b = 12 What is side c of a right triangle using the pythagorean<br> theorm?
Sunny_sXe [5.5K]

Answer:

36 root 5 I believe

Step-by-step explanation:

4 0
3 years ago
What is the area of a desktop that is 2 1/2 feet by 5 feet?
Elden [556K]

The area of the desktop is 12. 5 feet square

<h3>How to determine the area</h3>

The formula for area of a rectangle;

Area = length × width

Length = 2. 5 feet

Width = 5 feet

Area = 2. 5 × 5

Area = 12. 5 feet square

Thus, the area of the desktop is 12. 5 feet square

Learn more about area of a rectangle here:

brainly.com/question/14137384

#SPJ1

3 0
1 year ago
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