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3 years ago

1.3 Dominic buys a calculator costing £7.50, 3 packets of pens costing £1.80 for each packet and

Mathematics

2 answers:

MatroZZZ [7]3 years ago

7 0

Answer:

One ruler cost 0.60

Step-by-step explanation:

7.50(1) + 1.80(3) + 4x = 20 - 4.70

7.50 + 5.40 + 4x = 15.30

12.90 + 4x = 15.30

4x = 2.40

x = 0.6

Naddika [18.5K]3 years ago

4 0

I believe the answer is .60

You might be interested in

A circle has a circumference of 34 54 cm. What is the area of the circle to the nearest whole centimeter? Use 3.14

inysia [295]

Answer:

Step-by-step explanation:

We know that the Circumference = 3454 cm

And we also know that the formula for the Circumference of Circle is,

$2\pi \times r$

So we can put the equation this way,

$3454 = 2\pi \times r$

So we can solve for 'r'

$3454 = 2 \times 3.14 \times r \\ 3454 = 6.28r \\ r = \frac{3454}{6.28} \\ r = 550$

Now we have radius and we can solve for the area of the circle,

$\pi \times {r}^{2}$

$3.14 \times 550 \times 550 \\ = 949850$

We can convert this to meter,

9498.5 m

I am not sure if this is correct just let me know thanks :)

8 0

3 years ago

Which expression is equivalent to Negative 2 and one-fourth divided by negative two-thirds? StartFraction 9 over 4 EndFraction d

Tanzania [10]

Answer:

The correct answer is:

Negative StartFraction 9 over 4 EndFraction divided by two-thirds

i.e.

$-\dfrac{9}{4} \div \dfrac{2}{3}$

Step-by-step explanation:

We have to find equivalent expression to :

Negative 2 and one-fourth divided by negative two-thirds

i.e.

$-2\dfrac{1}{4} \div \dfrac{2}{3} = ?$

We have to convert the the mixed fraction form $-2\frac{1}{4}$ to simpler $\frac{p}{q}$ fraction form.

Let us learn the concept first.

Mixed fraction is combination of a whole number and a fraction.

Expression of the form $a\frac{b}{c}$ have the following understanding:

c is the divider

b is the remainder and

a is the quotient.

To convert mixed fraction to fraction we can use the following:

$a\dfrac{b}{c} = \dfrac{a \times c+b}{c}$

$\therefore -2\dfrac{1}{4} = -\dfrac{(2 \times 4+1)}{4} = -\dfrac{9}{4}$

Hence

$-2\dfrac{1}{4} \div \dfrac{2}{3} = -\dfrac{9}{4} \div \dfrac{2}{3}$

i.e. the given expression is equivalent to :

Negative StartFraction 9 over 4 EndFraction divided by two-thirds

8 0

4 years ago

Read 2 more answers

Please help me out here i need a real answer pleasseeee

insens350 [35]

Answer:

Step-by-step explanation:

35*3-8+33=33

8 0

3 years ago

If someone can help me figure out #6. Thanks

professor190 [17]

Answer: $(1,-\frac{3}{2})$

Step-by-step explanation:

To find the midpoint, you use the formula $midpoint=(\frac{x_1+x_2}{2} ,\frac{y_1+y_2}{2} )$ .

The points are (-2,-1) and (4,-2).

$midpoint=(\frac{-2+4}{2} ,\frac{-1+(-2)}{2} )$ [add]

$midpoint=(\frac{2}{2} ,\frac{-3}{2} )$ [divide]

$midpoint=(1 ,\frac{-3}{2} )$

Now, we know the midpoint is $(1,-\frac{3}{2})$ .

3 0

3 years ago

coldgirl [10]

Using Compound interest formula:

The exponential function for calculating the amount of money after t years, A(t), where P is the initial amount or principal, the annual interest rate is r and the number of times interest is compounded per year is n, is given by
 $A(t) = p(1+ \frac{r}{n} )^{nt}$

from the given information:
p = 2,310 , r = 0.035 ,
compounded daily ⇒⇒⇒ n =365
To calculate the time : deposited April 12 and withdrawn July 5
t = 2 months and 23 days = 83 days = 83/365 years
∴ n t = 365 * 83/365 = 83

Amount = 
 $A(t) = 2310(1+ \frac{0.035}{365} )^{83}$ = 2,328.46

The interest earned = 2,328.6458 - 2,310 = 18.46

7 0

4 years ago