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IgorLugansk [536]
3 years ago
15

Can someone please help and solve these 2 problems?

Mathematics
1 answer:
VladimirAG [237]3 years ago
8 0

Answer:

8 for 1

n is (0;8)

Step-by-step explanation:

look photo, but I'm not conviniat if n can be negative, if yes, i hope you will correct me

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Simon spends £28 over 7 days. Each day, he spends 50p more than the previous day.
garik1379 [7]

This is about conversion of currencies.

<u><em>He spent £25 on the first day.</em></u>

  • We are told he had spent £28 over 7 days.

Each day, he spends 50 pence more than the previous day. This means that;

  • From conversion,

1 pound = 100 pence

Thus, 50 pence = (50 × 1)/100 = £0.5

  • If the money he spent on the first day is £x.
  • On second day, he would have spent a total of; £(x + 0.5)
  • On third day; x + 0.5 + 0.5= x + 1
  • On fourth day; x + 1 + 0.5 = x + 1.5
  • On fifth day; x + 1.5 + 0.5 = x + 2
  • On sixth day; x + 2 + 0.5 = x + 2.5
  • On seventh day; x + 2.5 + 0.5 = x + 3

  • Thus; x + 3 = 28

x = 28 - 3

x = £25

Read more at; brainly.com/question/22398109

3 0
3 years ago
Help!
qwelly [4]
(5b-7)-3(8-2b)
Always Distribute First!
(5b-7)-24+6b
Combine like terms!
11b-31
5 0
3 years ago
for a certain type of heater, the increase in gas bills is directly proportional to the temperature setting (in fahrenheit). if
erica [24]

Answer:

The gas bill increases by $50

Step-by-step explanation:

We know that the increase in gas bills is directly proportional to the temperature setting. Let's take the increase in gas bills as g and increase in temperature setting as t. Thus, this can be written as:

g ∝ t

In every proportionality, there is a constant k, so it will be:

g = kt

It is mentioned that when the temperature setting increases by 4, the gas bill increases by $20, so in terms of the constant, we can write it as:

20 = k 4

We don't know the value of the constant, so we have to first find it out.

k = 20 ÷ 4

k = 5

Thus,

g = 5t

Now that we know the value of the constant, we can find by how much the gas bill will increase if the temperature setting increases by 10.

g = 5 × 10

g = <u>50</u>

∴ the gas bill increases by $50 when the temperature setting increases by 10 degrees Fahrenheit.

7 0
2 years ago
Carly tried to evaluate the expression 24÷(4×2-5)
andre [41]

Answer:

24÷( 4×2-5)

= 24÷(3)

=8

I believe this is the only way to evaluate this expression. Hope it helps.

3 0
3 years ago
Read 2 more answers
The following picture is an example of VERTICAL angles.
kotegsom [21]

Answer:

False

Step-by-step explanation:

Vertical angles are equal and share a vertex

They are formed from the same lines

8 0
3 years ago
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