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Fantom [35]
3 years ago
10

Two math teachers come together and write math problems about fruit vendors. If Teacher A can write 50 problems in 60 minutes an

d Teacher B can write 50 problems in 80 minutes, how long would it take them to write 50 problems if they worked together?
Mathematics
2 answers:
mylen [45]3 years ago
8 0
Approximately 70 minutes (???)
Fudgin [204]3 years ago
4 0

Answer:

hi

Step-by-step explanation:

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Find the center of the circle that can be circumscribed about EFG with E(2,2),F(2,-2), and G(6,-2)
RSB [31]
Hmmm I'd say the center of the circle will end up at the center of the triangle, namely the Centroid of the triangle circumscribed in the circle.

\bf \textit{Centroid of a Triangle}
\begin{array}{llll}
\stackrel{E(2,2)~~F(2,-2)~~G(6,-2)}{\left(\cfrac{2+2+6}{3}\quad ,\cfrac{2-2-2}{3}\quad \right)}
\end{array}
6 0
3 years ago
Allie noticed that to get her test grade, she could take Valerie's grade, multiply it by 2 and subtract 15. If Valerie's test gr
kolbaska11 [484]
Answer is c) 2x - 15 because x is Valerie's grade

Allie's grade is <span>taking Valerie's grade, multiply it by 2 and subtract 15</span>
4 0
3 years ago
Identify the type of observational study​ (cross-sectional, retrospective, or​ prospective) described below. A research company
shepuryov [24]

Answer:

Cross Sectional

Step-by-step explanation:

A cross sectional is one in which an association is developed between a risk factor or an outcome.

In the given question the device is used to record the viewing habits of about 2500 ​households, and the data collected today will be used to determine  the proportion of households tuned to a particular news program. There will be risk factor in today's research with the future developed program which will the outcome.

For example there are 20 students in my class who cannot write. So I develop a program to help them write. But the next year there may not be any student who would require such help.So there's a risk factor associated with the outcome.

Cross sectional results are recorded in a two ways table showing do's and don'ts.

7 0
3 years ago
Complete the square to the problem X^2+6x-16=0
marishachu [46]

Answer:

<h2>x = -8 or x = 2</h2>

Step-by-step explanation:

(a+b)^2=a^2+2ab+b^2\qquad(*)\\\\-------------------------------\\\\x^2+6x-16=0\qquad\text{add 16 to both sides}\\\\x^2+6x=16\\\\x^2+2(x)(3)=16\qquad\text{add}\ 3^2\ \text{to both sides}\\\\\underbrace{x^2+2(x)(3)+3^2}_{(*)}=16+3^2\\\\(x+3)^2=16+9\\\\(x+3)^2=25\Rightarrow x+3=\pm\sqrt{25}\\\\x+3=-5\ \vee\ x+3=5\qquad\text{subtract 3 from both sides}\\\\\boxed{x=-8\ \vee\ x=2}

3 0
3 years ago
A bag of candy contains 2 pieces of bubble gum, 4 jolly ranchers, and 10 tootsie rolls . what is the probability of reaching int
alexgriva [62]
Total = 2 + 4 + 10 = 16

Bubble Gums and Tootsie Roll = 2 + 10 = 12

P(Bubble Gums and Tootsie Roll) = 12/16 = 3/4
6 0
3 years ago
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