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eimsori [14]
3 years ago
13

the money used in south Africa is is called the rand . the estrange rate 7 rand for $1. Find how many dollars you would receive

if you estrange 21 rand.
Mathematics
1 answer:
Tasya [4]3 years ago
4 0

Answer:

$3

Step-by-step explanation:

21 rand * ($1/7 rand) = $3

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6 bc it is

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What is the purpose of the periodic interest rate? (2 points)
antiseptic1488 [7]

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The Answer is to determine the amount of interest charged during a specific time frame

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3 years ago
Priscilla started a part time job working at an after school program.
pav-90 [236]

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B

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The first week, she worked

3  \times 2\frac{1}{2}  = 3 \times  \frac{5}{2}  = \frac{15}{2}

The second week, she worked

3 \times 2 \frac{1}{4}  = 3 \times  \frac{9}{4}  =  \frac{27}{4}

Total number of hours she worked over these 6 days

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2 years ago
Can someone solve this
Bond [772]

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-1/2

Step-by-step explanation:

8 0
3 years ago
Please help!!!! Will mark brainliest!! 18 points.
andreyandreev [35.5K]

Method 1:

You can use the formula of an area of equilateral triangle:

A=\dfrac{a^2\sqrt3}{4}

a - length of side

We have a = 10 yd. Substitute:

A=\dfrac{10^2\sqrt3}{4}=\dfrac{100\sqrt3}{4}=25\sqrt3\ yd^2\\\\\sqrt3\approx1.7\\\\A=25(1.7)=\boxed{42.5\ yd^2}


Method 2:

Use the Pythagorean theorem (look at he picture).

5^2+h^2=10^2

25+h^2=100           <em>subtract 25 from both sides</em>

h^2=75\to h=\sqrt{75}\\\\h=\sqrt{25\cdot3}\\\\h=\sqrt{25}\cdot\sqrt3\\\\h=5\sqrt3\ yd

The formula of an area of a trinagle:

A=\dfrac{1}{2}bh

b - base

h - height

We have b = 10 yd and h = 5√3 yd. Substitute:

A=\dfrac{1}{2}(10)(5\sqrt3)=(5)(5\sqrt3)=25\sqrt3\ yd\\\\\sqrt3\approx1.7\\\\A=25(1.7)=\boxed{42.5\ yd^2}

8 0
3 years ago
Read 2 more answers
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