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3241004551 [841]
4 years ago
13

150-2x[(3x15) (2x10)]

Mathematics
1 answer:
Dima020 [189]4 years ago
8 0
I'm not familiar with the use of square brackets/parentheses

I'm assuming it wants (3x15) times (2x10) then that times'd by 2x.

150-2x(900)

150-1800x doesn't make sense however. Can you rephrase the question?
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Hi please help! geometry!!
sattari [20]
X is 90 degrees and Y is 43 degrees
4 0
3 years ago
#1. Factor the expression. 4g^2+21g-49
juin [17]

1. You want to find factors of 4×(-49) that add to 21. Those would be +28 and -7. Replacing the term 21g with the sum 28g -7g, we get an expression that can be factored by grouping.

... (4g² +28g) + (-7g -49)

... = 4g(g +7) -7(g +7) = (4g-7)(g+7)

2. After you factor out 5, you have 5(64y² -16y -15). As in the previous problem, you're looking for factors of 64×(-15) = -960 that sum to -16. There are 14 factor pairs of 960, so it can take a little bit of effort to find the right pair. That pair is -40 and 24. As in the previous problem you replace the term -16y with the sum -40y +24y and factor by grouping.

... = 5(64y² -40y +24y -15) = 5(8y(8y -5) +3(8y -5))

... = 5(8y +3)(8y -5)

3. False. It is perhaps easiest to check this by multiplying out the offered factors. Doing that gives you 36k² -36k +8k -8. The collected k terms add to -28k, not -44k.

4 0
4 years ago
Choose the method to solve the problem below: There are members on a board of directors. If they must form a subcommittee of mem
shepuryov [24]

Answer:

b. 56

Step-by-step explanation:

Please consider the complete question.

There are 8 members on a board of directors. If they must form a subcommittee of 3 members, how many different subcommittees are possible?

We will use combinations for solve our given problem.

^nC_r=\frac{n!}{r!(n-r)!}, where,

n = Number of total items,

r = Items being chosen at a time.

For our given scenario n=8 and r=3.

^8C_3=\frac{8!}{3!(8-3)!}

^8C_3=\frac{8!}{3!\cdot 5!}

^8C_3=\frac{8\cdot7\cdot6\cdot5!}{3\cdot2\cdot1\cdot 5!}

^8C_3=8\cdot7

^8C_3=56

Therefore, 56 different subcommittees are possible and option 'b' is the correct choice.

4 0
3 years ago
How many tens blocks would you need to make 2,540
Xelga [282]
254 is the answer 2,540• 10 gives ur answer to 254
3 0
3 years ago
Find the distance between the pair of points: (2,3) and (-5, -3).<br><br>distance = ? ​
Snowcat [4.5K]

Answer:

9.219544457292887

Step-by-step explanation:

Use distance formula

√(−5−2)^2+(−3−3)^2

√(−7)^2+(−6)^2

√49+36

√85

√≈9.219544457292887

Hoped this helped!

: )

3 0
3 years ago
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