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2 years ago

??????????????????????????????

Mathematics

2 answers:

fiasKO [112]2 years ago

6 0

Step-by-step explanation:

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Try putting it on a timeline. It makes more sense that way :)

Mkey [24]2 years ago

6 0

> I hope that helped

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Student Produced Response - Calculator

faltersainse [42]

Answer:

$\dfrac{a}{b}=0.75$ .

Step-by-step explanation:

If two equations $a_1x+b_1y+c_1=0$ and $a_2x+b_2y+c_2=0$ has infinitely many solutions, then

$\dfrac{a_1}{a_2}=\dfrac{b_1}{b_2}=\dfrac{c_1}{c_2}$

The given equations are

$ax+by=10$

$3x+4y=20$

It is given that the above system of equations has infinitely many solutions. So,

$\dfrac{a}{3}=\dfrac{b}{4}=\dfrac{10}{20}$

$\dfrac{a}{3}=\dfrac{b}{4}=\dfrac{1}{2}$

Now,

$\dfrac{a}{3}=\dfrac{1}{2}$ and $\dfrac{b}{4}=\dfrac{1}{2}$

$a=\dfrac{3}{2}$ and $b=\dfrac{4}{2}$

$a=1.5$ and $b=2$

So, a=1.5 and b=2.

Now,

$\dfrac{a}{b}=\dfrac{1.5}{2}=0.75$

Therefore, $\dfrac{a}{b}=0.75$ .

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3 years ago

What is 1 + 6r + r > -27

Sav [38]

Answer:

Step-by-step explanation:

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3 years ago

Solve<br> -20y + 15 = 2 - 19y + 11

andrey2020 [161]

Answer:

the answer to this equation is 2

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2 years ago

Read 2 more answers

What is the most efficient way to use surface area in math

timofeeve [1]

Answer: label the length (l), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area.

Step-by-step explanation:

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3 years ago

If n = 4, all of the following expressions are equivalent except

Lorico [155]

Answer:

n to the power of -2

Step-by-step explanation:

i counted all the others and this is the only one that doesn't add up to 16. the last answer is -16 not 16 so there you go.

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3 years ago