HURRY I'LL PICK A BRAINLIEST PERSON!!!Solve for a.

7a - 2b = 5a + b

A. a = 2b
B. a = 3b
C. a =3/2 b
D. a =2/3 b

Answers

Answer 1

Answer: the answer is C. a=3/2b. To solve this problem you will nee to put A on one side and B on the other. To get this simply subtract 2b from the right and 5a from the left. You should get:
2a=3b
from this point just divide by 2 and you get: a=3/2b
Hope this helps!

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Anna makes hand-painted plates. Her overhead cost are $750 per week, and she pays an additional $10 per plate in material cost. If Anna sells the plates for $25 each, how many plates does she have to sell each week before she can make a profit?

Answers

From the question we get the following equation:
750+10p=25p
750=15p
p= 750/15
p=50

So if Anna sells 50 plates she will earn total $1250. Her cost are 750 + 50*10 = $1250. That means that Anna break even when she sells 50 plates. The question are when is Anna making a profit? When Anna sells more than 50 plates.

Solving Systems of Equations by substitution
-5x-8y=17
2x-7y=-17

Answers

$\left\{\begin{array}{ccc}-5x-8y=17\n2x-7y=-17\end{array}\right\n\left\{\begin{array}{ccc}-5x=8y+17&/\cdot(-2)\n2x-7y=-17&/\cdot5\end{array}\right\n\n\left\{\begin{array}{ccc}10x=-16y-34\n10x-35y=-85\end{array}\right\n\nsubstitute:\n\n-16y-34-35y=-85\n-51y=-85+34\n-51y=-51\ \ \ \ /:(-51)\ny=1\n\n10x=-16\cdot1-34\n10x=-50\ \ \ \ /:10\nx=-5\n\nSolution:x=-5\ and\ y=1$

$-5x=17+8y \n x= - (17+8y)/(5) \n 2x-7y=-17 \n 2* (17+8y)/(5) -7y=-17 \n (34+16y)/(5) -7y=-17 \ we \ bring \ to \ the \ same \ denominator \ \n34+16y-35y=-85 \n -19y=-85-34 \n 19y=119 \n y= (119)/(19) \n x= -( 17+ 8* (119)/(19) )/(5) \n x= - ( 17 + (952)/(19) )/(5) \n x= - ( (323+952)/(19))/(5) \n x= -( (1275)/(19) )/(5) \n x= -(1275)/(19) * (1)/(5) \n x= -(255)/(19)$

Witch expression means five times the sum of b and two

Answers

Answer:

Step-by-step explanation:

This is A. because it says 5 TIMES the sum of b and two. First, the sum of b and two. That means it will be b+2. Now the 5. You have to multiply 5 by b+2. That means your answer is 5(b+2). If you follow the order of operations, you do what is in the parentheses first wish is b+2. Once you get the sum of that, you multiply it by 5.

Hope this helps! :)

Is 3/6 greater than 6/12?

Answers

They are equal. Because 3/6=6/12 and 6/12=3/6.

No they are equal because they are both 1/2

what is the coeffcient of a term that consists of a single variable?For example,what is the coefficient of x

Answers

1 easy
x=1x

if you have a cow, how many do you have? 1

if ou have an x, how many do you have? 1

1 is coeficinet

Final answer:

The adjusted multiple coefficient of determination accounts for the number of independent variables in the model.

Explanation:

The adjusted multiple coefficient of determination, also known as the adjusted R-squared, is a statistical measure used in regression analysis to assess the goodness-of-fit of a regression model. It takes into account the number of independent variables in the model and adjusts the coefficient of determination (R-squared) to account for the degrees of freedom.

The adjusted R-squared provides a more accurate measure of the model's predictive power by penalizing the inclusion of unnecessary variables that do not contribute significantly to the model's explanatory power. It helps to prevent overfitting and provides a more reliable estimate of the model's performance.

To know more about Coefficient :

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What is 0.0000000345 in scientific notation?