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777dan777 [17]
4 years ago
13

Help plz !!!!!!!!!!!

Mathematics
2 answers:
aleksklad [387]4 years ago
5 0
The answer is "B" or also called the second box down
Otrada [13]4 years ago
4 0
The answer is B. or two answers down

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Marcus, Shaun, and Tristan each invested into new business. They invested 1 point
Schach [20]

Shaun invested $176,250 into the new business.

Marcus invested half of the $940,000 so the amount that Shaun and Tristan invested is:

= 940,000 / 2

= $470,000

Shaun and Tristan invested in the ratio 3:5.

The amount that Shaun invested is:

<em>= (Ratio of Shaun / Sum of the ratios) x Amount both invested </em>

= (3 / (3 + 5 )) x 470,000

= 3/8 x 470,000

= $176,250

In conclusion, Shaun must have invested $176,250 into the business.

<em>Find out more at brainly.com/question/771006.</em>

4 0
3 years ago
1/4 + 1/2 ÷ 3/8 = ?<br><br><br> Please Answer quickly im in a test!
White raven [17]

Answer:

Step-by-step explanation:

Three eights

8 0
3 years ago
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Please solve this proportion with steps (I'm stuck)<br> (9x+6)/18= (20x+4)/3x
guapka [62]
\frac{9x+6}{18}=\frac{20x+4}{3x}

Cross multiply. Distribute...
3x(9x+6)=18(20x+4)\\27x^2+18x=360x+72\\27x^2-342x-72=0\\3x^2-38x-8=0

OH GOD IT'S A QUADRATIC
<em>(our equation is in ax² + bx + c = 0 form. a=3. b= -38. c= -8.
</em><em>plug these values into the quadratic formula and simplify.)</em>
x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}=\frac{-(-38)\pm\sqrt{(-38)^2-4(3)(-8)}}{2(3)}=\frac{38\pm\sqrt{1444+96}}6\\\\\sqrt{1444+96}=\sqrt{1540}=\sqrt{4\times345}=2\sqrt{345}\\\\\frac{38\pm2\sqrt{345}}6=\boxed{x=\frac{19\pm\sqrt{345}}3}

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7 0
3 years ago
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Please help with #2 please
disa [49]

Answer:

167.5

Step-by-step explanation:

For surface area all you have to do is multiply each number by one of the other numbers x2.

7 0
4 years ago
Mr. Ledford is concerned about the amount of sleep the students in his district are getting. He selects a random sample of 14 se
zepelin [54]

Answer:

Hence, the data provides convincing evidence that a linear relationship exists between hours of sleep observed and academic performance as measured by GPA.

Step-by-step explanation:

Given the data:

Sleep (hrs) 9 8.5 9 7 7.56 7 5.5 6 8.5 6.5 8

GPA 3.8 3.3 3.5 3.6 3.4 3.3 3.2 3.2 3.2 3.4 3.6 3.1 3.4 3.7

The scatter plot shows a positive linear trend. With the correlation Coefficient depicting a R value of 0.56. The residual plot also depicts a a randomly scattered values of the residual values. Similarly, a plot of the normal values of  residuals

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