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3 years ago

X+2y = 5 3х +6y = 15 Use the substitution method

Mathematics

1 answer:

prohojiy [21]3 years ago

8 0

X=1 Y=2 the reason is 1+2*2= 5 and 3*1+6*2= 15. I explained it better in the picture. If it’s right, plz mark me as brainliest

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If f(x) = 2x + 3 and g(x) = x^2 + 1,find f(g(3)). A.) 23 B.) 47 C.) 82 D.) 90

marta [7]

The answer is A). 23.
g(x)= 2x + 3 
g(x) = x^2 + 1 
g(3) = 10 
f(g(3)) 
= f(10) 
= 23

6 0

4 years ago

What is 44.5443495 rounded to the nearest thousand

prohojiy [21]

Answer:

Step-by-step explanation:

To the nearest thousand the answer is 0.

If you meant thousandth then the second 4 to the right of the decimal point occupies the thousandth place. so that 4 is followed by a 3, that 4 is not changed.

The answer is 44.544

but it does depend on what you meant.

7 0

3 years ago

A bag contains 10 red marbles, 7 green marbles. and 8 striped marbles. A marble is picked, then put back into bag. Find P(green

SIZIF [17.4K]

G = number of green = 7

S = number of striped = 8

T = number total = 10+7+8 = 25

probability of picking green = P(G) = G/T = 7/25

probability of picking striped = P(S) = S/T = 8/25

P(green and striped) = P(G)*P(S) ... events are independent

P(green and striped) = (7/25)*(8/25)

P(green and striped) = (7*8)/(25*25)

P(green and striped) = 56/625

P(green and striped) = 0.0896

--------------------------------

In summary, the answer as a fraction is 56/625

In decimal form, the answer is 0.0896

The value 0.0896 can be converted to percent form to get 8.96%

8 0

3 years ago

Fatima has a car detailing service. She charges $15.00 for a vacuum,

irina1246 [14]

Answer:

Step-by-step explanation:

Answer is B

B. 105

Hope this helps

3 0

3 years ago

An ice cream cone has a diameter of 3 inches.The distance from the top of the cone to the point at the bottom (height) is 5 inch

solong [7]

Answer:

11.781 cubic inches (round accordingly)

Step-by-step explanation:

The formula for the volume of a cone is:

$V=\frac{1}{3}\pi r^{2} h$

where r is the radius and h is the height.

For our ice cream cone:

d = 3 inches

r = 1.5 inches (the radius is half of the diameter)

h= 5 inches

So all we have to do is plug in our values and solve for the volume:

$\frac{1}{3}\pi (1.5)^{2}(5) = 11.781$

So our final answer is around 11.8 cubic inches.

3 0

3 years ago