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3 years ago

HEEEEEEEEEEEEEEEEEEEEEEELLLLLLLLLLLLLLLLLLLLLLLLLPPPPPPPPPPPPPPPPPPP WITH ANSWER PLZZZZ

Mathematics

2 answers:

antiseptic1488 [7]3 years ago

6 0

78 units squared add together 27.5+12+22+16.5 and you’ll get your answer for triangles it’s 1/2bh and for the rectangles it’s just bh. hope this helped!

Yakvenalex [24]3 years ago

4 0

Answer:

78 hope this helps

Step-by-step explanation:

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the sum of three consecutive natural numbers is 156 find the number which is the multiple of 13 out of these numbers

vichka [17]

Answer:

52 is the multiple of 13

Step-by-step explanation:

3x+3=156

3x=153

x=52

8 0

3 years ago

Read 2 more answers

In 1975 1000 tons of coal was manufactured. It is 10% greater in 1976 and 5% less in 77. What is the final about of coal in 1977

Digiron [165]

In 1975 it was 1000tons, ok, well, in 1976 it went up by 10%, how much is a 10% increase?

$\bf \begin{array}{ccllll}
coal&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
1000&100\\
x&100+10
\end{array}\implies \cfrac{1000}{x}=\cfrac{100}{100+10}\implies \cfrac{1000\cdot 110}{100}=x
\\\\\\
1100=x$

well, in 1976 it was 1100 tons then, and in 1977 it went down by 5% of 1100, well, if we take 1100 to be the 100%, then what is a 5% decrease?

$\bf \begin{array}{ccllll}
coal&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
1100&100\\
x&100-5
\end{array}\implies \cfrac{1100}{x}=\cfrac{100}{100-5}\implies \cfrac{1100\cdot 95}{100}=x$

5 0

3 years ago

How to work out 20% of £54

Alexandra [31]

Answer:

£10.80

Step-by-step explanation:

20% = $\frac{20}{100}$ = 0.2 , then

£54 × 0.2 = £10.80

3 0

3 years ago

Perimeter =68 Length (L) is 4 less than twice the width (W)

Lerok [7]

Answer:

Length = 21.3333333333; Width: 12.6666666667

Step-by-step explanation:

Perimeter = 68

Perimeter of a rectangle:

2 (L +W)

Length (L) = 2W - 4

Width = W

2 ( 2W -4 +W) = 68

=> 2 (3W - 4) = 68

=> 6w -8 = 68

=> 6w = 76

=> w = 12.6666666667

Length = (12.6666666667 X 2) - 4

=> 21.3333333333

8 0

3 years ago

Please help!!!!!!!!!!!!!!!!!!

kumpel [21]

Answer:

1) 95

2) -12

3) 7

4) 1,700

5) 57

6) 3,070

8 0

3 years ago