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adelina 88 [10]
3 years ago
5

Evaluate 3 + (a + 4)(8 - b) when a = 5 and b = 6. The value of the expression is

Mathematics
2 answers:
levacccp [35]3 years ago
8 0

Answer:

21

Step-by-step explanation:

you plug in 5 for a and 6 for b and solve.

vovikov84 [41]3 years ago
5 0

Answer:

21

Step-by-step explanation;

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Mark earns $135 for selling a $1,500 refrigerator. Which sale listed has the same commission rate? A) $36 commission on a $400 d
sdas [7]
So the percentage Mark makes comparative to the price of the refrigerator sold is \frac{135}{1500}=0.09= 9%. If we take 9% of the given sale prices:
A: 0.09*400=36
B: 0.09*500=45
C: 0.09*1400=126
D: 0.09*600=54

So (A) has the same commission rate.
4 0
2 years ago
The number of people who attended a concert on Friday was 34 the number of people who attended the same concert on Saturday. A t
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Answer:

8

the answer is 806

Step-by-step explanation:

840-36=806

6 0
3 years ago
How do i write 1.67 in words
Alex Ar [27]
Many people would say "one point six seven" or "one dot six seven".

But technically, it's "<em>one and sixty-seven hundredths</em>".
5 0
3 years ago
Read 2 more answers
The endpoints of AB are A(2, 3) and B(8, 1). The perpendicular bisector of AB is CD, and point C lies on AB. The length of CD is
marysya [2.9K]
Comment
If C lies on AB Then it must be the midpoint of AB because CD is the Perpendicular Bisector of AB

Midpoint
A(2,3) B(8,1)
Midpoint formula = (x1 + x2)/2 + (y1 + y2)/2
Midpoint = (2 + 8)/2 + (3 + 1) / 2 
Midpoint = 10/2 + 4/2
Midpoint = (5,2) <<<<< answer


Slope AB
slope = (y2 - y1)/(x2 - x1)
slope = (3 - 1) / (2 - 8)
slope = 2/-6 = -1/3

Slope CD
CD_slope * AB_slope = - 1
CD_slope * -1/3 = -1 multiply both sides by - 3
CD_slope * 1 = - 1 * -3
CD_slope = 3   <<<<< Slope CD Answer

Equation CD
Given the midpoint of AB which is C( and the slope of CD
y = 3x + b
2 = 3*5 + b
b = - 13
Equation y = 3x - 13

Using Distance to get D
d^2 = (x1 - x2)^2 + (y2 - y1)'^2 
d^2 = (x2 - 5)^2 + (y2 - 2)^2
y2 = 3*x2 - 13
10 = x2^2 - 10x2 + 25 + (3x2 - 13 - 2)^2
10 = x2^2 - 10x2 + 25 + (3x2 - 15)^2
10 = x1^2 - 10x2 + 25 + 9x^2 - 90x2 + 225
10 = 10x2^2 - 100x2 +250
0 = 10x2^2 - 100x2 + 240 Divide through by 10
0 = x2^2 - 10x^2 + 24
0 = (x2 - 6)(x2 - 4)
 
x2 = 6 or
x2 = 4

Using y2 = 3x - 13
for x2  = 4
then y2 = 3(4) - 13
y2 = - 1

for x2 = 6
y2 = 3*6 - 13
y2 = 5

Possible Answers  for D
D = (4,-1)
D = (6,5)

I've included a graph to show a graphical solution. 

Please note in a week's time, if no one else answers, you can award a Brainly. This question took over an hour. If someone else answers, please choose one of us.

7 0
3 years ago
When olivia started a business the amount of profit she had was -$1550 during the first six months, her profit increase by $250
Llana [10]
She is still in debt by $50 by the end of six months. -1550+250=-1300+250=-1050+250=-800+250=-550+250=-300+250=-50
4 0
3 years ago
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