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taurus [48]
3 years ago
15

If x=2 and y=1, what is the value of the expression 3(y - 1) + 2x² ? a. 8 b. 10 c. 16 d. 18

Mathematics
1 answer:
ch4aika [34]3 years ago
8 0

Answer:

8

Step-by-step explanation:

3(y - 1) + 2x²

Let x =2 and y =1

3(1-1)+2 (2)^2

3(0) +2(4)

0+8

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Answer:

750 feet^2

Step-by-step explanation:

Area of triangle = 1/2bh

(1/2)(100)(15)

750 feet^2

6 0
3 years ago
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Alaina has 7 in her bank account and earns 6 each day . joel has 48 in his banck account and earn 8 earch day in how many days w
Elis [28]

Answer:

I think you wrote something wrong.

Step-by-step explanation:

If Alaina has $7 in her bank account and Joel had $48 in his Joel already has more then Alaina but I will attempt to teach you how to solve these types of problems.

for this example I'm giving Alaina 79 dollars.

First we know were starting with 79 dollars and increasing 6 dollars each day so the equation for this is; y = 6x + 79 that is Alaina's equation.

For Joel our equation will be; y = 8x + 48.

Since they already have 79 and 48 dollars in their bank we put those as our B in the equation cause they are our y-intercepts. (Y = mx + b) Next we know their increasing by 6 and 8 dollars a day so we make those our m. Once we have these equations we can plot them and see where the lines meet. (thats our answer) I plotted them on desmos graphing calculator.

They crossed at (15.5, 172) Which means it will take 16 days for Joel to catch up they will both have 172 dollars in the bank account on the 16th day.

Hope this helps!

8 0
3 years ago
What is the cardinality of the power set B- (m,v,e,j,s,u,n,p,c,)
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Answer:

jsa-ygso-fxk join here

3 0
3 years ago
during her first six months, susie gained 25% more than her birth weight. if she gained 2 1/2 pounds during this period, how muc
stich3 [128]

Answer:

the answer is

25% = 2.5 pounds

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Step-by-step explanation:

6 0
3 years ago
The perimeter of this rectangle is 30 units. How long is the longer side?
IgorC [24]

Answer:

b. 9 units

Step-by-step explanation:

30/2 -6 = 15-6 = 9

5 0
3 years ago
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