2 years ago

7 copies of the sum of 8 and 4

Mathematics

1 answer:

tiny-mole [99]2 years ago

3 0

The answer is 84 because 8+4=12 12x7=84

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Suppose you know that 10% of 250 is 25. How could you use<br> that information to find 30% of 250?

Nookie1986 [14]

Answer:

triple the answer

Step-by-step explanation:

.1×250=25

.3×250= 75

25×3=75

7 0

2 years ago

The diagram shows a semi circle inside a rectangle of length 140m. the semi circle touches the rectangle at P, Q and R. Calculat

exis [7]

Answer: 250m

Step-by-step explanation:

Length of rectangle = 140m

Length of rectangle = diameter of semicircle = 140m

Therefore, Radius(r) = 140m / 2 = 70m

Perimeter of the shaded region:

Length of tangent at P + length of tangent at Q + shaded portion of arc(AB)

Length of tangent = diameter / 2

Length of tangent = 70m

Perimeter of a circle = 2πr = 2 × 22/7 × 70 = 440m

shaded portion = 440 / 4 = 110m

Therefore, perimeter of shaded portion equals

70m + 70m + 110m = 250m

4 0

3 years ago

6 $44 is shared between David, Jo and Mary in the ratio 2:3:5<br> How much does each receive?

OverLord2011 [107]

Answer:

David=$8.8

Jo=$13.2

Mary=$22

Step-by-step explanation:

2+3+5=10

44/10=4.4

David=4.4x2=$8.8

Jo=4.4x3=$13.2

Mary=4.4x5=$22

8.8+13.2+22=44

8 0

3 years ago

The admission to a local fair is $10 for each adult and $6 for each child. Each ride costs $1.50 for an adult and $1 for a child

S_A_V [24]

So first start out by writing an expression for the cost of the child and the adult separately.

Child:
6 + 1r ($6 + $1 per ride)

Adult:
10 + 1.5r ($10 + $1.50 per ride)

to find how much more the adult will spend, just do Adult Expression - Child Expression which will be:

10 + 1.5r - (6 + 1r) just simplify this

For Part B, use your equation from part A where r = 7

6 0

2 years ago

Dee is buying lilies to use in centerpieces for a special dinner. Each centerpiece will have three lilies. There are a total of

Leni [432]

It was $30.60 for each centerpieces

6 0

2 years ago