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mihalych1998 [28]
3 years ago
7

Which expression has a positive value?

Mathematics
2 answers:
Allushta [10]3 years ago
5 0

Answer:

3rd expression has a positive value.

Step-by-step explanation:

(1) -4 + (-5) [\frac{(-6)}{(-3)}]

= -4 + (-5) × 2

= -4 -10

= -10

(2) 8 [\frac{10}{2(-2)}]

=\frac{80}{(-4)} = -20

(3) 3 [\frac{-64}{8}]+25

= 3(-8) + 25

= -24 + 25

= 1 [positive value]

(4) \frac{(-2)(-5)(-3)}{10}

=\frac{+10(-3)}{10}

= -3

3rd expression has a positive value.

e-lub [12.9K]3 years ago
4 0
3(-64/8)+25 will give you a positive value of 1
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First, we need to find the perimeter of the basketball court. To find the perimeter, you need to add all the sides of the shape, or in this case add the width(2) and height(2).

(32 x 2) + (17x2) = 64 + 34 = 98

the perimeter is 98 meters.

She drew a line around the perimeter, and the perimeter is 98 meters, so the line si also more or less 98 meters.

The correct answer is D.
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Lauren Rob need to find a decimal equivalent to 39/50 Laura said she could write an equivalent fraction with 100 as the denomina
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Answer:

Laura and Rob are correct

Step-by-step explanation:

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39/50

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2) Laura said she could write an equivalent fraction with 100 as the denominator to converted into a decimal

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Someone please help!!! It’s timed!
vazorg [7]

Answer:

a) x = 10

b) DA = 24

c) perimeter = 110

Step-by-step explanation:

a) Since it's a parallelogram, the opposite sides are of equal length. This means that line DC = AB, so u can substitute in the values and solve for x:

DC = AB

5x - 18 = 2x + 12           (move terms so that like terms are on the same side)

5x - 2x = 12 + 18           (simplify like terms)

3x = 30                         (divide by 3 on both sides to isolate the x)

x = 10

b) now that u know the value of x, you can use it to find the length of DA. again, opposite sides are equal, so DA = BC, which means DA = 3x - 6. substitute in your known value of x and solve:

3x - 6

= 3(10) - 6

= 30 - 6

= 24

Therefore, the length of DA - 24

c) Since u know the length of DA (and therefore BC), u just have to find the length of either DC or AB and then multiply that by 2 and add it.

First, substitute in the value of x for either DC or AB (i'm gonna use AB)

2x + 12

= 2(10) + 12

= 20+12

= 32

now, to find the perimeter use this formula: 2(AB) + 2(DA)

this equals to 2(32) + 2(24) = 64+46 = 110

and that's the perimeter!

hope this helps!

3 0
3 years ago
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