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3 years ago

Pleaee help me with this im stuck

Mathematics

2 answers:

Marat540 [252]3 years ago

7 0

Answer:

q=11

u=1

a=13

l=8

s=12

Step-by-step explanation:

1) (q-5)×5=30 |÷5

q-5=6 |+5

q=11

2) (u+1)×9=18 |÷9

u+1=2|-1

u=1

3) 4(a-3)=40

4a - 12=40|+12

4a=52|÷4

a=13

4) 5(2l+3)=95

10l +15=95|-15

10l=80|÷10

l=8

5) 4(4s+9)=228

16s+36=228|-36

16s=192|÷16

s=12

AURORKA [14]3 years ago

6 0

the answers are clear if you use priority and equation rules.

q=11
u=2
a=13
l=8
s=12

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D)) The ratio of the monthly income and expenditure of Sunayana is 5 : 3. If she

Gnom [1K]

Answer:

Sunayana's income is ₹25000 and expenditures are ₹15000.

Step-by-step explanation:

Let i denote the monthly income and e denote the expenditures.

We know that the ratio of the monthly income to expenditure is 5:3. So, we can write the following proportion:

$\frac{i}{e}=\frac{5}{3}$

Let's multiply both sides by e. This yields:

$i=\frac{5}{3}e$

We know that when the income is increased by 5000 and the expenditures are decreased by 3000, the new ratio is 5:2. So, we can write the following proportion:

$\frac{i+5000}{e-3000}=\frac{5}{2}$

Let's multiply both sides by $(e-3000)$ :

$i+5000=\frac{5}{2}(e-3000)$

Since we know that $i=\frac{5}{3}e$ , substitute:

$\frac{5}{3}e+5000=\frac{5}{2}(e-3000)$

So, let's solve for the expenditures. Distribute the right:

$\frac{5}{3}e+5000=\frac{5}{2}e-7500$

Subtract $\frac{5}{2}e$ from both sides:

$-\frac{5}{6}e+5000=-7500$

Subtract 5000 from both sides:

$-\frac{5}{6}e=-12500$

Multiply both sides by -6/5. So, the expenditures are:

$e=\text{Rs }15000$

We can use the original ratio to find Sunayana's income:

$i=\frac{5}{3}e$

Substitute 15000 for e. Evaluate:

$i=\frac{5}{3}(15000)=\text{Rs }25000$

So, Sunayana's income is ₹25000 and expenditures are ₹15000.

And we're done!

Edit: Wrong currency, sorry about that!

3 0

3 years ago

Read 2 more answers

I need help with m-3 over 4 = m-3 over 5

MariettaO [177]

M=3

You would begin by cross multiplying and then solving it from there:

5(m-3)=4(m-3)
5m-15=4m-12
5m-4m=-12+15
m=3

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3 years ago

Is the following a proportion? Yes or no? 6/9 = 14/21

tresset_1 [31]

I think it's not, because for proportion, you use the given clues to solve for a value or an unknown number.

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3 years ago

What is the equation of the line that passes through (4, 2) and is parallel to 3x - 2y = -6?

Elenna [48]

Answer:

Unfortunately I can't read your answer options properly. The copied text is just too messed up. But hopefully the step-by-step calculation will help you.

Lemme know if it worked for you and if you have further questions.

Step-by-step explanation:

3x - 2y = -6

can be rewritten as

2y = 3x + 6

or simpler

y = 1.5x + 3

we know that it's parallel to this line, but we don't know how much lower or higher the new line will be, so let's set "+3" as an unknown variable.

y = 1.5x + b

(the letter b is now what we try to solve for)

now let's plug in the x-/y-Informations of the given point

2 = 1.5 * 4 + b

2 = 6 + b

-4 = b

so the new line is

y = 1.5x -4

(the given point lies on that line and it's parallel to the other line)

let's multiply everything by two to get closer to the original format

2y = 3x -8

it could also be expressed as

2y = -(-3x+8)

(in hope that this may help for choosing an answer option)

please clean up the text of questions before posting next time

(would really appreciate the brainliest)

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MA_775_DIABLO [31]

The answer would be D - 1/6

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Since there is only 1 3 on the six sided die there is a 1/6 chance he would roll a 3.

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3 years ago