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3 years ago

Please help me at this wit steps how did you did it

Mathematics

1 answer:

balu736 [363]3 years ago

5 0

Answer:

5. LCM of 7 and 14: 14.

multiples of 7: 7, 14

multiples of 14: 14

LCM of 8 and 12: 24.

multiples of 8: 8, 16, 24

multiples of 12: 12, 24

Step-by-step explanation:

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Find the selling price of a $450 painting with a 45% markup

olganol [36]

I think it's 202.5
I multiplied 450 and 45%
and then you're supposed to add them I believe
202.5+450

6 0

3 years ago

Simplify: 2 - 5 + 4 - 6 - 2 + 12

JulsSmile [24]

The answer is five
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6 0

3 years ago

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A boat, which moves at 29 miles per hour in water without a current , goes 825 miles upstream and 825 miles back again in 58 hou

Igoryamba

Answer:

4 mph

Step-by-step explanation:

Travel time is proportional to distance and inversely proportional to speed. If c represents the speed of the current in miles per hour, an equation for the total trip time is ...

825/(29 -c) +825/(29 +c) = 58 . . . . . . hours travel time

825(29 +c) +825(29 -c) = 58(29 -c)(29 +c)

58c² -928 = 0 . . . . . . . rearrange to standard form

58(c -4)(c +4) = 0 . . . . factor

Values of c that satisfy this equation are 4 and -4. For the purpose here, we'll choose the positive solution.

The speed of the current is 4 miles per hour.

8 0

2 years ago

The scale on a map indicates that 1 inch represents 10 miles. If two cities are 2 3 4 inches apart on a map, how many miles apar

Delicious77 [7]

Answer:

Step-by-step explanation:

2340 miles

Given

1 inch represents 10 miles

thus,

1 inch on map = 10 miles in real

given the two cities are 234 inches apart on map

1 inch on map = 10 miles in real

multiplying both side by 234

1 inch*234 on map = 10 miles*234 in real

234 inch on map = 2340 miles in real.

Thus, two cities are 2340 miles apart.

3 0

4 years ago

Read 2 more answers

find the area of an isosceles trapezoid that has bases with lengths of 20 and 30 and legs of length 13

ahrayia [7]

Answer:

325

Step-by-step explanation:

A = .5(b1+b2) h

.5 (20 + 30) 13

325

8 0

3 years ago