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3 years ago

Share out £20 between bill and sue in the ratio 3:2

Mathematics

1 answer:

Luba_88 [7]3 years ago

5 0

Answer:

12:8

Step-by-step explanation:

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Cheryl is buying lace for her dance costume. One foot of lace costs 3 dollars. How much does each amount cost? 3/4 of a foot?

Dima020 [189]

Step-by-step explanation:

one foot cost 3 so a fourth of one foot is one fourth of three which is .75 and .75 x 3 is 2.25

6 0

3 years ago

Which expression can go in the blank to make the equation true? -2.9 + 2.8 + ____________ = 0

diamong [38]

Answer:

+0.1

Step-by-step explanation:

when we subtract 2.9 and 2.8 we get -0.1 and to make it zero we have to keep +0.1

6 0

3 years ago

Read 2 more answers

1) what is the difference between -2 and 4?

Vika [28.1K]

Answer:

Ans is 2

and

Ans is 17°C

Step-by-step explanation:

You should subyract the smallest number from biggest e.g. 4-2 = 2

8 0

3 years ago

What is the slope-intercept form of the function described by this table

swat32

$x_1=1 \\ y_1=-2 \\ \\ x_2=2 \\ y_2=-6 \\ \\
m=\frac{y_2-y_1}{x_2-x_1}=\frac{-6-(-2)}{2-1}=\frac{-6+2}{1}=\frac{-4}{1}=-4 \\ \\
y=-4x+b \\
x=1, y=-2 \\
-2=-4 \times 1+b \\
-2=-4+b \\
-2+4=b \\
b=2 \\ \\
\boxed{y=-4x+2}$

3 0

3 years ago

A student has money in three accounts that pay 5%, 7%, and 8%, in annual simple (i.e. compounded once per year) interest. She ha

Alex

Answer:

Amount invested in account with 5% annual interest = $300

Amount invested in account with 7% annual interest = $400

Amount invested in account with 8% annual interest = $900

Step-by-step explanation:

Let the money invested in account with 5% annual interest = $x$

As per question statement,

Money invested in account with 8% annual interest = $3x$

Given that total amount invested in three accounts = $1600

So, Money invested in account with 7% annual interest = 1600- $3x$ - $x$ = 1600- $4x$

For one year, the compound interest is same as that of Simple Interest.

Formula for simple interest is given as:

$SI =\dfrac{PRT}{100}$

Where, P is the amount invested

R is the annual rate of interest

T is the time for which the amount is invested.

As per question statement:

$\dfrac{x\times 5\times 1}{100}+\dfrac{(1600-4x)\times 7\times 1}{100}+\dfrac{3x\times 8\times 1}{100} =115\\\Rightarrow 5x\times +1600\times 7-28x+24x=11500\\\Rightarrow 29x-28x = 11500-11200\\\Rightarrow \bold{x =\$300}$

Amount invested in account with 5% annual interest = $300

Amount invested in account with 7% annual interest = $1600-$1200 = $400

Amount invested in account with 8% annual interest = $900

4 0

3 years ago