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Airida [17]
2 years ago
6

Which of the following is equivalent to: −−(2+5)−(3−7)?

Mathematics
1 answer:
Umnica [9.8K]2 years ago
3 0

Answer:

You haven't provided expressions, so I can work out the problem for you. When we divide fractions, remember always "keep, switch, flip!" That's what we're gonna do here. We keep the 2/5, switch the sign to multiplication, and flip the 7/8 to 8/7. Therefore, we have 2/5*8/7. That gives us 16/35. Hope this helps!

Step-by-step explanation:

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Solve for k:<br> 310 – (30 x 7) = 5 x k
tester [92]

Answer:

k=20

Step-by-step explanation:

ph*tomath (the app) is your friend btw because this would be really easy to solve using that but

solve for k:

simplify the left side as 310-210 then =100

so 100=5k

divide by 5 and k=20

7 0
3 years ago
Which is the zero of the function f(x)=(x+3) (2x-1)(x+2) ?
Scrat [10]

Answer:

x= -3     x = 1/2     x=-2

Step-by-step explanation:

f(x)=(x+3) (2x-1)(x+2)

Set equal to zero

0 =(x+3) (2x-1)(x+2)

Using the zero product property

x+3 =0   2x-1 =0    x+2 =0

x= -3    2x =1       x = -2

x= -3     x = 1/2     x=-2

6 0
3 years ago
How to I solve this problem?
Arturiano [62]

Answer:

x=3

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
61% of 180 ?
poizon [28]
First, when multiplying percents, you need to convert them to decimals. You convert percents to decimals by multiplying by 100 or moving the decimal two places to the left. Once you convert them to full decimals, you multiply the decimal by the number that you are getting the percentage from

61% of 180⇒.61×180=<u>109.8 </u>

5.1% of 81?⇒.051×81=<u>4.131

</u>16 \frac{1}{2} of 36?⇒16.5×36⇒.165×36=<u>5.94

</u>81% of 241⇒.81×241=<u>195.21</u>

76% of 600⇒.76×600=<u>456</u>

88% of 680⇒.88×680=<u>598.4</u>

37% of 481⇒.37×481=<u>177.97</u>

19.1% of 380⇒.191×380=<u>72.58</u>

41% of 321⇒.41×321=<u>131.61</u>

33% of 331⇒.33×331=<u>109.23</u>



8 0
3 years ago
A new sidewalk will be 4 feet​ wide, 240 feet​ long, and filled to a depth of 9 inches ​(0.75 ​foot) with concrete. How many cub
Drupady [299]

Answer: The number of cubic yards of concrete that are needed is 720.

Step-by-step explanation: The same formula for this type of shape stays the same: l*w*(h or d).

240 * 4 = 960

960 * 0.75 = 720

3 0
3 years ago
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