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zvonat [6]
3 years ago
9

Please help me with my question!!

Mathematics
2 answers:
zlopas [31]3 years ago
8 0
A and C are false.
B and D are true.
enyata [817]3 years ago
5 0

Let's test each option.

Option A:

7 + (-8) + 1 = -1 + 1 = 0

TRUE

Option B:

-15/2 + 7 = -7.5 + 7 = -0.5

FALSE

Option C:

-5 + 4 + (-1) = -1 + (-1) = -2

TRUE

Option D:

-14 + 28/2 = -14 + 14 = 0

FALSE

The only correct options is A and C.

Best of Luck!

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If the garden is square, then the perimeter would be 90. 15(2)+30(2)=90
810/90=9
So it would cost $9 per foot.
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Please help! : What is the actual length of a window that is 1 1/4 inches long on a drawing with a scale of 1 inch= 6 feet? This
BabaBlast [244]
\bf \begin{array}{ccllll}
model&actual\\
\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\
1&6\\
1\frac{1}{4}&x
\end{array}\implies \cfrac{1}{1\frac{1}{4}}=\cfrac{6}{x}
\\\\\\
1\frac{1}{4}\implies \cfrac{1\cdot 4+1}{4}\implies \cfrac{5}{4}\qquad thus
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\bf \cfrac{1}{\frac{5}{4}}=\cfrac{6}{x}\implies \cfrac{\frac{1}{1}}{\frac{5}{4}}=\cfrac{6}{x}\implies \cfrac{1}{1}\cdot \cfrac{4}{5}=\cfrac{6}{x}\implies \cfrac{4}{5}=\cfrac{6}{x}
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7 0
3 years ago
16. Find the measures of ∠1 and ∠2 in the kite at right. (That rhymed!)
nikdorinn [45]
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5 0
3 years ago
What is the sum of the arithmetic series
docker41 [41]

Answer:

S_ {12} = 192

Step-by-step explanation:

The nth term of the given arithmetic sequence is

U_n = 3 + 2n

The first term of this series is:

U_1 = 3 + 2(1) = 5

The last term of this series is when

n = 12

U_ {12}= 3 + 2(12)

U_ {12}= 3 + 24 = 27

The sum of the first n terms of an arithmetic series when the first an last term is known is given by:

S_n =  \frac{n}{2}(a + l)

Where a=5 is the first term and l=27 is the last term.

S_ {12} =  \frac{12}{2}(5 + 27)

S_ {12} =6(32) =19 2

6 0
3 years ago
Pls help anyone!!!!!!!!!!!
nadezda [96]
9.) 3
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6 0
3 years ago
Read 2 more answers
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