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Marrrta [24]
2 years ago
14

What is another way to write to 72- (-25) ?

Mathematics
2 answers:
Valentin [98]2 years ago
8 0

Your answer would be 1, or 72+25.

What is happening in this case is a negative number is being subtracted from a positive. This means you are taking away a negative. The two negatives cancel each other out, and then it becomes you are adding a positive.

Another way I like to think about this is the two minus symbols combine together to form a plus sign.

Hope this helped!

schepotkina [342]2 years ago
6 0

Answer:

1. 72+25

Step-by-step explanation:

To subtract, you add the opposite.

a - (-b) = a + b

72 - (-25) = 72 + 25

Answer: 1. 72+25

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Find the exact values of cos 3 pi/4 radians sin 3 pi/4 radians.
Liula [17]
If you consult the unit circle, you will see that:

cos(\frac{3\pi}{4}) = -\frac{\sqrt{2}}{2}\\\\sin(\frac{3\pi}{4}) = \frac{\sqrt{2}}{2}

3pi/4 in degrees is 3pi/4 * 180/pi = 3/4 * 180 = 135 degrees. And please refer to the attachment to how you can obtain the values above.

Now, lets multiply it together.

-\frac{\sqrt{2}}{2} \cdot \frac{\sqrt{2}}{2} =\\\\-\frac{2}{4} =\\\\ \boxed{\bf{-\frac{1}{2}}}

So, <span>cos(3pi/4)sin(3pi/4) = -1/2</span>

7 0
3 years ago
£880 is divided between Jim, Krutika &amp; Natasha so that Jim gets twice as much as Krutika, and Krutika gets three times as mu
krok68 [10]

Answer:

264 pounds

Step-by-step explanation:

Write the question in the form of a ratio:

Natasha: Krutika: Jim

1:3:6

Now, we divide the amount of 880 in the ratio.

there are 10 parts in total.

1 part = 880 divided by 10 = 88.

since Krutika gets 3 parts, she gets 88 x 3 = 264

7 0
3 years ago
The dimensions of a 7-cm by 2-cm rectangle are<br> multiplied by 3. How is the area affected?
Soloha48 [4]

Answer:

Original rectangle:  Since the area of a rectangle is the length * width, the area of this rectangle is 7 * 2 = 14 square cm.

New rectangle: The new dimensions of this are 7*3 = 21 cm by 2*3 = 6 cm.  To find the area, we multiply these two together.  21*6 = 126 square cm.

126 is 9 times greater than 14, so the area will be multiplied by 9.

Step-by-step explanation:

3 0
3 years ago
Match the equivalent expressions 4(2x + 3) - 7x
lozanna [386]
The answer would be 8x+ 12 - 7x or 20x - 7x
3 0
2 years ago
Read 2 more answers
Whats 1/3 of 2/4
lara31 [8.8K]

Answer:

0.16666666666 or 16666666666/100000000000

Step-by-step explanation:

8 0
2 years ago
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