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Tems11 [23]
3 years ago
7

Evaluate: -0.7 - (-2.6 + -0.8) + 7.1

Mathematics
1 answer:
SpyIntel [72]3 years ago
3 0

Answer:

8.36

Step-by-step explanation:

-0.7-(-2.6+ -0.8) +7.1\\  (add inside the parenthesis)\\\\-0.7 - 3.4 + 7.1\\\\=8.36

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A cost regularly priced at $188 is on sale for 25% off . What is the sale price ?
Brums [2.3K]
You need to multiply 188 by 25%. But first convert 25% to a decimal 0.25.
188*0.25 is 47
Now we subtract 188 - 47
Which is 141
$141 is the sales price.
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3 years ago
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8 0
2 years ago
The following set of coordinates most specifically represents which figure? (−5, 6), (−1, 8), (3, 6), (−1, 4) (6 points) Paralle
Vladimir [108]

Answer:

Rhombus

Step-by-step explanation:

The given points are A(−5, 6), B(−1, 8), C(3, 6), D(−1, 4).

We use the distance formula to find the length of AB.

|AB|=\sqrt{(-1--5)^2+(8-6)^2}

|AB|=\sqrt{16+4}

|AB|=\sqrt{20}

The length of AD is

|AD|=\sqrt{(-1--5)^2+(6-4)^2}

|AD|=\sqrt{16+4}

|AD|=\sqrt{20}

The length of BC is:

|BC|=\sqrt{(-1-3)^2+(8-6)^2}

|BC|=\sqrt{16+4}

|BC|=\sqrt{20}

The length of CD is

|CD|=\sqrt{(-1-3)^2+(6-4)^2}

|CD|=\sqrt{16+4}

|CD|=\sqrt{20}

Since all sides are congruent the quadrilateral could be a rhombus or a square.

Slope of AB=\frac{8-6}{-1--5}=\frac{1}{2}

Slope of BC =\frac{8-6}{-1-3}=-\frac{1}{2}

Since the slopes of the adjacent sides are not negative reciprocals of each other, the quadrilateral cannot be  a square. It is a rhombus

7 0
2 years ago
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Juan was presented with the following problem on a math test: "Divide 3/4 by 5/7 Show your work" His work is shown below. What w
nignag [31]

Answer:

0.952381

Step-by-step explanation:

Juan forgot to simplify 20/21 when he got his answer and was supposed to round to the nearest 6 decimals places and when he simplify it, it was supposed to be written in decimal form

8 0
2 years ago
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Rewrite this formula to convert Fahrenheit to Celsius. F= 9/5C + 35
iVinArrow [24]

Answer:

\huge \purple { \boxed{ C = \frac{5}{9} ( F  - 32)}}

Step-by-step explanation:

I the given problem, there should be 32 in place of 35.

F =  \frac{9}{5}  C + 32 \\ F  - 32=  \frac{9}{5}  C \\ 5( F  - 32)=  9  C \\  \frac{5}{9} ( F  - 32)=C \\  \\ \huge \red{ \boxed{ C = \frac{5}{9} ( F  - 32)}}

7 0
3 years ago
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