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2 years ago

On the double number line, 3 minutes corresponds to 180 beats.

Mathematics

2 answers:

harina [27]2 years ago

8 0

Answer:

your answer is- toni types 270 lettre in three minutes

Step-by-step explanation:

2:180=90

3:270=90

Step-by-step explanation:

Aleksandr [31]2 years ago

5 0

Answer:

Step-by-step explanation:

<u>both have divisions of 90 so...</u>

<u />

<h2> the answer is 90</h2><h2 /><h2>brainliest?</h2>

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Solve the following system of equations for a and for b:

viktelen [127]

Answer:

$a=3\\b=1$

Step-by-step explanation:

$9a+3b=30\\8a+4b=28$

Let's solve the second equation for a to later on replace it in the first equation.

$8a+4b=28\\8a=28-4b\\a=\frac{28-4b}{8}$

Now plug this into the first equation.

$9a+3b=30\\9(\frac{28-4b}{8})+3b=30$

Distribute the 9

$(\frac{252-36b}{8}) +3b=30$

Break down the fraction.

$\frac{252}{8}-\frac{36b}{8}+3b=30$

Simplify.

$\frac{63}{2}-\frac{9}{2}b+3b=30$

Subtract $\frac{63}{2}$

$-\frac{9}{2}b+3b=30-\frac{63}{2}$

Combine like terms.

$\frac{-9+2*3}{2}b=\frac{30*2-63}{2}$

$\frac{-9+6}{2}b=\frac{60-63}{2}$

$\frac{-3}{2}b=\frac{-3}{2}$

Muliply by the reciprocal or inverted fraction next to b.

$(-\frac{2}{3})(-\frac{3}{2}) b=-\frac{3}{2}(-\frac{2}{3})$

$b=1$

Now plug this value into any of the equations to find the value of a.

$8a+4b=28\\8a+4(1)=28\\8a+4=28\\8a=28-4\\8a=24\\a=\frac{24}{8}\\ a=3$

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2 years ago

A researcher is comparing the effectiveness of three devices designed to help people who snore. There are 120 people who snore p

vampirchik [111]

Answer:

Step-by-step explanation:

A is the less complicated one and the simplest but also the most efficient and the one that makes the most sense.

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Which is the smallest number which leaves remainder 8 and 12 when divided by 28 and 32 respectively?

WARRIOR [948]

Answer:

Which is the smallest number which leaves remainder 8 and 12 when divided by 28 and 32 respectively? 204.

Step-by-step explanation:

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2 years ago

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Simplify 6/ square root 3+2

Ivenika [448]

From what i see it could be
Exact form: 6 square root 5/ 5
Decimals: 2.68

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2 years ago

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Please help- I am very confused-

shusha [124]

Answer:

5÷9

Step-by-step explanation:

5/9 is a fraction where the numerator is divided by the denominator

5 divide by 9

5÷9

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2 years ago

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