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3 years ago

An=−5n+90 i dont know it

1 answer:

3 0

I am guessing your problem should read...

A) n = -5n + 90 (isolate the variables by adding 5n to each side)
   +5n +5n
   6n = 90 (since we don't want to know what 6n's are worth, divide by 6)
6n/6 = 90/6
   n = 15

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Brian invests £4900 into his bank account.

True [87]

Answer:

£5200.68

Step-by-step explanation:

<u>Given:</u>

Investment P = £4900
Interest rate r = 1.5% or r = 0.015
Time t = 4 years
Number of compounds per year n = 1

<u>Find the future amount:</u>

$F = P*(1+r/n)^{nt}\\$
$F = 4900*(1+0.015/1)^{1*4}=4900*1.015^4 = 5200.68$

6 0

2 years ago

Read 2 more answers

1/3 x 2/5 in simplest form

Vsevolod [243]

Answer:

2/15

Step-by-step explanation:

1/3 x 2/5

= ( 1 x 2 ) / ( 3 x 5 )

= 2/15

3 0

3 years ago

Read 2 more answers

Can someone walk me through this?

shepuryov [24]

I hope this helps you

Ax+By=C

By=C-Ax

y=C/B-A/Bx

m= -A/B

8 0

3 years ago

Area triangles? it says show work so pls do

coldgirl [10]

$\large{\underline{\underline{\pmb{\sf {\color {blue}{Solution:}}}}}}$

Given,

Area = 225 yd²

Base = 30 yd

Height = [To be calculated]

To find:

The height of the given triangle.

We know that, area of a triangle is:

$\frac{1}{2} \times (b \times h) \\ \\ \leadsto \frac{1}{2} \times (30 \times h) \\ \\ \leadsto \frac{1}{2} \times 30h \\ \\ \leadsto \frac{1}{ \cancel{2}} \times \cancel{30}h \\ \\ \leadsto1 \times 15h \\ \\ \leadsto \: h = 15 \: yd$

Therefore, the require height is 15 yd.

$\green\star$ Proof:

$\frac{1}{2} \times (b \times h) \\ \\ \leadsto \frac{1}{2} \times (30 \times 15) \\ \\ \leadsto \frac{1}{ \cancel{2}} \times \cancel{450} \\ \\ \leadsto1 \times 225 \\ \\ area = 225 {yd}^{2}$

$\boxed{ \frak \red{brainlysamurai}}$

6 0

2 years ago

Here are two polygons on a grid.

NNADVOKAT [17]

Answer:

No.

Step-by-step explanation:

For polygon PQRST to be considered a scaled copy of polygon ABCDE, it means every segments of polygon ABCDE were increased proportionally by a scale factor.

The segments in polygon PQRST were not gotten using the same scale factor, hence, it is not a scaled copy of the original polygon, ABCDE.

Segment CD = 2 units, it corresponds to segment RS = 4 units. Scale factor = RS/CD = 4/2 = 2

Segment BC = 1 unit, it corresponds to segment QR = 1 unit. Scale factor = QR/BC = 1/1 = 1 units.

Varying scale factor shows polygon PQRST is not a scaled copy of polygon ABCDE.

7 0

4 years ago