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Dvinal [7]
2 years ago
5

Which products are correct? A) (3.2)(2.5)(6.5) = 52B) −1.5(1.5)(1.5) = 3.375C) −5(7.2)(−3) = −108D) −(6.5)(1.4)(3.4) = −30.94E)

−1(−5.5)(−14.9) = −81.95
Mathematics
1 answer:
makkiz [27]2 years ago
5 0
If you can give me more information on this I could help you a bit more respond.
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Explain how using basic facts can help you find 10×20×30×40 mentally?
Katena32 [7]
So all you have to do is take the first numbers of each multiple and multiply them. 
1 x 2 x 3 x 4 = 24 
Now you just add the 4 zeros to your answer. 
240,000 

Our answer even checks! 
10 x 20 x 30 x 40 = 240,000 

Good Luck! :)
3 0
4 years ago
Solve the inequality 9(x - 3) < 4(x + 10).
tresset_1 [31]

Answer:

The solution is the area x < 67/5

Step-by-step explanation:

Perform the indicated multiplication.  We get:

9x - 27 < 4x + 40

Combining like terms results in:

5x < 67

Then the solution is the area x < 67/5

8 0
4 years ago
Read 2 more answers
Mr .Baker has baked some muffins. If he packs them in boxes of 4, he will have 3 left over. If he packs them in boxes of 5, he w
babunello [35]

Answer:

\boxed{43}

Step-by-step explanation:

I think the easiest way to solve this problem is by brute force: trial and error.

We must find numbers that when divided by  

  • 4 leave 3 (4n + 3)
  • 5 leave 3 (5n + 3)
  • 6 leave 1  (6n + 1)

Here is a list of multiples of the integer n that satisfy the three conditions. \begin{array}{c|ccc}\mathbf{n} & \mathbf{4n+ 3} & \mathbf{5n + 3} & \mathbf{6n + 1}\\1 & 7 & 8 & 7\\2 & 11 & 13 & 13\\3 & 15 & 18 & 19\\4 & 19 & 23 & 25\\5 & 23 & 28 & 31\\6 & 27 & 33 & 37\\7 & 31 & 38 & \mathbf{43}\\8 & 35 & \mathbf{43} & 49\\9 & 39 & 48 & 55\\10 & \mathbf{43} & 53 & 61\\\end{array}\\\text{The only number that is common to all three lists is $\mathbf{43}$.}\\\text{The smallest possible number of muffins Mr. Baker could have baked is $\boxed{\mathbf{43}}$.}

Check:

43 \div 4 = 10R3\\43 \div5 = 8R3\\43 \div 6 = 7R1

OK .

6 0
3 years ago
Can you help me please ? im not able to fiqure it out
kakasveta [241]

(7^5 * 7^3)^4 * 7^-2 / 7^-7 * 7^20

= (7^8)^4 * 7^-2 / 7^(-7 + 20)

= 7^32 * 7^-2 / 7^13

= 7^(32 - 2) / 7^13

= 7^30 / 7^13

= 7^(30 - 13)

= 7^17

5 0
3 years ago
X=-5y+2<br> x=3y-2<br> elmantion or substutuion
Nikolay [14]

Answer:

y = 1/2

Step-by-step explanation:

x = -5y+2

x=3y-2

substitute for x ans solve

3y-2=-5y+2

8y-2=2

8y = 4

y= 4/8

y=1/2

6 0
3 years ago
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