4 years ago

Please help me with question 9 please

Mathematics

1 answer:

bazaltina [42]4 years ago

3 0

Answer:

22(12) - 18

Step-by-step explanation:

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Rearrange the equation so r is the independent variable.<br><br> 10q - 5r = 30

Murljashka [212]

Answer:

q = 3 + 1/2r

Step-by-step explanation:

10q - 5r = 30

We want to solve for q

Add 5r to each side

10q - 5r+5r = 30+5r

10q = 30+5r

Divide by 10

10q/10 = 30/10 +5r/10

q = 3 + 1/2r

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3 years ago

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X^1/4 +3 =0 -Solve the equation. Check your solutions

mina [271]

Answer:

Step-by-step explanation:

subtract 3 from both sides->x^1/4=-3

set both sides to the power of 4-> x=(-3)^4

solve-> x=81

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3 years ago

How many groups of 1/2 days are in 1 week? Write a multiplication equation or a division equation to represent the question, the

worty [1.4K]

Answer:

14 groups

Step-by-step explanation:

Given

$Groupings = \frac{1}{2}\ day$

$Duration = 1\ week$

Required

Determine the number of group in the week

To do this, we simply divide the duration by the number half day group.

This gives:

$Group = \frac{Duration}{Groupings}$

$Group = \frac{1\ week}{1/2\ days}$

Convert week to days

$Group = \frac{7\ days}{1/2\ days}$

$Group = \frac{7}{1/2}$

$Group = 7 / \frac{1}{2}$

Convert to multiplication

$Group = 7 * \frac{2}{1}$

$Group = \frac{14}{1}$

$Group = 14$

<em>Hence, there are 14 groups</em>

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3 years ago

Americans who are 65 years of age or older make up 12.2% of the total population. if there are 30.2 million Americans in this ag

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Divide the population of 65 or older by the percentage:

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4 years ago