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Anni [7]
3 years ago
13

Put into mathematical equation: one fifth the sum of 7 and a number

Mathematics
1 answer:
pashok25 [27]3 years ago
6 0

Answer:

(x+7)·.2

Step-by-step explanation:

The sum of x and 7 is x+7. The word sum indicates addition. Then it says multiply by 1/5, so i converted it to decimal which is .2

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In a sale,a clothes shop reduces its prices by 10%.A shirt usually costs £31.How much is it in the sale
Nata [24]
Price in the sale=£31-10% of £31
price in the sale=£31-(10/100)*£31=£31-(10*£31)/100=£31-£3.1=£27.9


The price in the sale is £27.9
8 0
4 years ago
Select all that apply. Select the formulas that give the amount P in the account after the first period.
Lisa [10]

Options :

a.) P=1.005Po

b.) P=1.02Po

c.) P=Po(0.02/4)

d.) P=Po(4.02/4)

e.) P=Po(1+ 0.02/4)

Answer:

a.) P=1.005Po

d.) e.) P=Po(1+ 0.02/4)

Step-by-step explanation:

From the compound interest formula:

P = P0(1 + r/n)^t

Rate = 2% = 2/100 = 0.02

n = Number of compounding times per period, quarterly ; n = (12 /3) months

P = P0(1 + 0.02/4)^1

P = p0(1 + 0.02/4)

Simplifying further :

P = P0(1 + 0.005)

P = p0(1.005)

4 0
3 years ago
Pat put 140 ounces of chocolates into 5 boxes. If each box held the same amount, there was __ lb. ___ oz. Per box.
Fudgin [204]

Answer:

43.75 pounds, so round up to 44 pounds

Step-by-step explanation:

5 0
3 years ago
What is the answer <br>3y+6=-2x
Anika [276]
SOLVE FOR X (FIRST BOX) SOLVE FOR Y (SECOND BOX)

7 0
3 years ago
Point B is on line AC so that AB : BC = 2 : 1. Point D is on line AB so that AD : DB = 3 : 2. Find AD : DC
Leya [2.2K]

Firstly, we will draw figure

Let's assume

length of AC=x

we have

AB : BC = 2 : 1

so,

AB=\frac{2}{3} x

BC=\frac{1}{3} x

Point D is on line AB

and

AB=\frac{2}{3} x

AD : DB = 3 : 2

so, we get

AD=\frac{3}{5} *\frac{2}{3} x

AD=\frac{2}{5} x

DB=\frac{2}{5} *\frac{2}{3} x

DB=\frac{4}{15} x

now, we can locate these values

Firstly, we will find DC

DC=DB+BC

now, we can plug values

DC=\frac{4}{15} x+\frac{1}{3} x

DC=\frac{3x}{5}

we have got

AD=\frac{2}{5} x

now, we can find ratio

\frac{AD}{DC} =\frac{\frac{2}{5} x}{\frac{3x}{5}}

now, we can simplify it

\frac{AD}{DC} =\frac{2}{3}

so,

AD:DC=2:3...........Answer


5 0
3 years ago
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