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Aleksandr [31]
3 years ago
15

How do I solve this question?

Mathematics
1 answer:
Jet001 [13]3 years ago
3 0

Answer:

n=2.5

Step-by-step explanation:

First, write an equation!

n+5n-6+2n+1=15

Now, combine like terms to make things easier.

8n-5=15

Cancel -5 from the left to isolate 5n as a variable.

8n-5+5=15+5

8n=20

Now divide both sides by 8.

8n/8=20/8

n=2.5

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€400 is divided between Ann, Brian and Carol so that Ann has twice as much as Brian and Brian has three times as much as Carol.
zheka24 [161]

Answer:

€120

Step-by-step explanation:

Let us represent

Ann = x

Brian = y

Carol = z

€400 is divided between Ann, Brian and Carol

Hence: x + y + z = €400...... Equation 1

Ann has twice as much as Brian

Hence:

x = 2y

Brian has three times as much as Carol.

y = 3z

z = y/3

We substitute

x + y + z = €400...... Equation 1

2y + y + y/3= €400

Multiply both sides by 3

2y × 3 + y × 3 + y/3 × 3 = €400 × 3

6y + 3y + y = €1200

10y = €1200

y = €1200/10

y = €120

How much does Brian receives ?

Since, Brian = y

Brian receives €120

4 0
3 years ago
What is 7% of £14.50
slava [35]
--------------------------------------------------
Change the percentage to decimal
--------------------------------------------------
7% = 0.07

--------------------------------------------------
Find the percentage
--------------------------------------------------
0.07 x <span> £14.50 = 1.015


</span>--------------------------------------------------
Answer: 1.015
--------------------------------------------------
<span>

</span>
6 0
3 years ago
Monique sells lemonade at a lemonade stand. The model she uses to predict future
Stels [109]

Answer:

The answer would be D

Step-by-step explanation:

Why? because as the temperature increases the amount of lemonade sold increases by 2

This is represented in 2(x) if that makes sense

5 0
3 years ago
Shawn rents an apartment in an all-brick building located in a historic,
evablogger [386]

Answer:

C. 107.50

Step-by-step explanation:

ape x confirmed :)

3 0
3 years ago
Find the following trigonometric values,rounded to 4 decimal places: 1) tan45. 2)sin70. 3) cos30. 4) cos20
harina [27]
1) Tan45 = 1
2) Sin70 = 0.9397
3) Cos30 = 0.8660
4) Cos20 = 0.9397
7 0
3 years ago
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