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Softa [21]
3 years ago
8

A mixed of purple paint contains 4 teaspoons of red paint and 10 teaspoons of blue paint.To make the same shade of purple paint

using 40 teaspoons of blue paint how much red would you need? A.12 B.14 C.16 D.160
Mathematics
1 answer:
lina2011 [118]3 years ago
5 0

Answer:

Number of  teaspoon of red paint = 16

Step-by-step explanation:

Given:

Mixture contain = 4 teaspoon red paint and 10 teaspoons blue paint

New Mixture = 40 teaspoons blue paint

Find:

Number of  teaspoon of red paint

Computation:

4 teaspoon red paint / 10 teaspoons blue paint = Number of  teaspoon of red paint / 40 teaspoons blue paint

Number of  teaspoon of red paint = 16

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In △ABC, point D∈ AB with AD:DB=5:3, point E∈ BC so that BE:EC=1:4. If AABC=40 in2, find AADC, ABDC, and ACDE.
DIA [1.3K]

Answer: Using the proportions between the segments, the area of the triangles are:

1. Area of triangle ADC is 25 in^2.

2. Area of triangle BDC is 15 in^2.

3. Area of triangle CDE is 12 in^2.


Please, see the attached files.

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8 0
3 years ago
Which of the following is a true statement? a) The correlation coefficient r is always greater than 1. b) The coefficient of det
brilliants [131]

Answer:

f) None of the above.

Step-by-step explanation:

When we try to adjust a curve from a scatter plot to try and predict values of the dependent variable y given known values of the independent variable x.

The curve is a function y=f(x) which usually is a line, a logarithmic, parabola, power or exponential.

In order to choose which curve adjust the best, we compute a number r called correlation coefficient.

The closer r  is to -1 or +1, the better the curve adjust the scatter plot.

When r =0, we say there is no correlation between the points x and y

When -1<r<0 we say there is a negative correlation, this means that the values of y decrease as the values of x increase.

When 0<r<1 we say there is a positive correlation, this means that the values of y increase as the values of x increase.

When r =1 or r =-1, we say that there is a perfect correlation. It means that all of the points of the scatter plot lie on the curve.

So, from the possible choices of answer, f) None of the above is the right one.

6 0
3 years ago
Which rational functions have an oblique asymptote? Check all that apply. f(x) = x^2+1/x f(x)= 4x^2-6/x+1 f(x)=-x/x^2 f(x)=x^5/x
Nata [24]

Answer:

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5 0
3 years ago
Perform the indicated operation.<br><br> (-6)(4)<br><br> 10<br> -10<br> 24<br> -24
Ray Of Light [21]

Answer:

-24

Step-by-step explanation:

All you really have to do is multiply -6 by 4, and that results in -24. Remember, if there is only one negative sign, it will be negative, but if zero or two negative signs are present, the answer will be positive.

7 0
3 years ago
Through: (-1, 0), parallel to y = 3x
evablogger [386]

y = mx + b

m = slope

b = y-intercept

Since it is parallel to the equation y = 3x it means that the equation that goes through point (-1, 0) has the same slope (3x)

To find the b plug the x and y of point (-1, 0) into the equation: y = 3x + b then solve for b

0 = 3(-1) + b

0 = -3 + b

0 + 3 = (-3 + 3) + b

3 = b

so...

y = 3x + b

Hope this helped and made sense!

~Just a girl in love with Shawn Mendes

7 0
3 years ago
Read 2 more answers
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