All categories

4 years ago

I need help on this question

Mathematics

2 answers:

kompoz [17]4 years ago

5 0

Answer: A

Step-by-step explanation:

topjm [15]4 years ago

4 0

Answer:

Step-by-step explanation:

so you would want to get y on the same side for both systems.

for x + y = 3, you subtract x from both sides and get y = -x +3.

then you do the other one. 5x + 5y = 15. subtract 5 x from both sides.

5y= -5x + 15. then divide both sides by 5. y = -x +3. this means these two systems are referring to the same line. in this case, there are infinitely many solutions. so, answer c.

for no solutions, you would have parallel lines (lines with the same slope)

and for one solution, you would have two lines that intersected at one point

You might be interested in

Jennifer is saving money to buy a bike. The bike costs $245. She has $125 saved, and each week she adds $15 toher savings. How l

valentinak56 [21]

125 135 145 155 165 175 185 195 205 220 235 245= 11 weeks

5 0

3 years ago

Kevin ordered 4 pizzas for a bday party. the pizza were cut in eighths. how many slices were there?

Ket [755]

32 slices of pizza. This is cuz 4*8=32

5 0

3 years ago

The formula for the sum of an infinite geometric series, s=a1/1-r, may be used to convert 0.23 to a fraction. What are the value

steposvetlana [31]

Given

The formula for the sum of an infinite geometric series

$s =\frac{a1}{1-r}$

used to convert 0.23 to a fraction

Find out the values of a1 and r

To proof

As given in the question

The series is infinte geometric series

The geometric is mostly in the form a , ar , ar² ,............

s = a + ar + ar² + ar³...........

Where a = first term

r = common ratio

The series is infinte geometric series i.e 0.2323...

thus it is written in the form

s = 0.23 + 0.0023 + 0.000023 +...........

now written in the fraction form

we get

$s = \frac{23}{100} +\frac{23}{10000}+\frac{23}{1000000} + .......$

compare this series with the

s = a + ar + ar² + ar³...........

Thus

we get

$a1 = \frac{23}{100}$

a1 = 0.23

$r = \frac{1}{100}$

r = 0.01

Hence proved

6 0

3 years ago

Read 2 more answers

Martin combined different amounts of orange juice, pineapple juice, and strawberry juice to make 1850 milliliters (ml) of fruit

stealth61 [152]

The answer is 450 ml.

First, we need to solve x (the amount of orange juice):
x + (x + 100) + one half x = 1850
x + x + 100 + 1/2 x = 1850

We can represent 1/2 as 0.5:

2x + 100 + 0.5x = 1850
2.5x = 1850 - 100
2.5x = 1750
x = 1750 ÷ 2.5
x = 700.

Thus, in the fruit punch, there is 700 ml of orange juice.

The amount of pineapple juice combined was 100 ml more than the amount of orange juice. Therefore, there is 800 ml of pineapple juice (700 ml of orange juice + 100 ml more).

The amount of strawberry juice was half the amount of orange juice. Therefore, there is 350 ml of strawberry juice (700 ml of orange juice ÷ 2).

The difference in the amounts of pineapple juice and strawberry juice Martin combined is 450 ml:
the amounts of pineapple juice - the amounts of strawberry juice =
800 ml of pineapple juice - 350 ml of strawberry juice = 450 ml.

3 0

3 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=%20-%205y%20%3D%204x%20%2B%2020" id="TexFormula1" title=" - 5y = 4x + 20" alt=" - 5y = 4x + 20

expeople1 [14]

Answer:

slope = -4/5

y intercept = -4

Step-by-step explanation:

-5y = 4x+20

divide each side by -5

y = 4x/-5 + 20/-5

y = -4/5 x -4

it is in the form y = mx +b where m is the slope and b is the y intercept

m = -4/5 and b = -4

8 0

3 years ago