Pencils cost 25p each. Mr smith spends £15 on pencils. Work out the number of pencils he gets.

I DON'T WANT TO GO TO SUMMER SHCOOL, IF I FAIL I GET SUMMER SHCOOL, PLEASE HELP, IF YOU HAVE ANY KNOWLEDGE ON THIS TEACH ME OR S

jenyasd209 [6]

Answer:

B. 225 π sq. units

Step-by-step explanation:

the diameter of circle = √18²+24²

=√324+576=√900 = 30

the radius = ½×30=15

the area of circle =

π × 15² = π × 225 = 225 π sq. units

8 0

3 years ago

Divide.<br> a.1 − 2i/2i<br> b. 5 − 2i/5 + 2i<br> c.√3 − 2i/−2 − √3i

Umnica [9.8K]

Answer:

(a) \frac{-1i}{2}-1[/tex]

(b) $\frac{20i+21}{29}$

(c) i

Step-by-step explanation:

We have to perform division

(a) $\frac{1-2i}{2i}$

So after division

$\frac{1-2i}{2i}=\frac{1}{2i}-\frac{2i}{2i}=\frac{-1i}{2}-1$

(b) We have given expression $\frac{5-2i}{5+2i}$

After rationalizing $\frac{5-2i}{5+2i}\times \frac{5-2i}{5-2i}=\frac{(5-2i)^2}{25+4}=\frac{25+4i^2+20i}{29}=\frac{20i+21}{29}$

(c) We have given expression $\frac{\sqrt{3}-2i}{-2-\sqrt{3i}}$

After rationalizing

$\frac{\sqrt{3}-2i}{-2-\sqrt{3i}}\times \frac{-2+\sqrt{3i}}{-2+\sqrt{3i}}=\frac{-2\sqrt{3}+7i+2\sqrt{3}}{7}=\frac{7i}{7}=i$

5 0

3 years ago

Last week, the members of a weight loss support group collectively weighed 2,900 pounds. They just weighed in again and are now

Doss [256]

Answer:

2,784 lbs

Step-by-step explanation:

2900/100=29 (that is 1% of the 2900)

29*4=116 (that is 4% of 2900; how much weight they lost)

2900-116=2784 (current weight)

3 0

2 years ago

Convert 8 yards into feet

kiruha [24]

Each yeard is 3 feet so 8 yards would be 24 feet

4 0

3 years ago

Read 2 more answers

Five-digit locker combinations are assigned using the digits 1–9. In how many ways can the combinations be formed if no digit ca

Orlov [11]

Answer:

15, 120

Step-by-step explanation:

9P4

.............................................................................................

4 0

3 years ago