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ohaa [14]
3 years ago
7

Explain too

Mathematics
1 answer:
Alekssandra [29.7K]3 years ago
5 0
1. [(24÷12)⋅6]+3⋅8÷2 = (2⋅6) + 3⋅8 /2 = 12 + 12 = 24

2.(26÷13)⋅(−7)+14−4 = 2 <span>⋅ (-7) + 14 - 4 = -14 + 14 - 4 = -4

3.</span><span>9 + 3 × 2 = 6 + 9 = 15

4.</span>6⋅[(32−8)÷4+2] = 6 ⋅ (24 / 4 + 2) = 6 ⋅ (6+2) = 6 <span>⋅ 8 = 48

5.</span><span>6y+5z+8y−3z = 14y + 2z</span>
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Find the 10th term of an arithmetic sequence if the common difference is 32 and the first term is 2
zaharov [31]

Answer:

290

Step-by-step explanation:

If the first term is 2 and the common difference is 32, then the formula for a(n) is:

a(n) = 2 + 32(n-1).

Thus, the 10th term is a(10) = 2 + 32(10-1)  =  2 + 32(9) = 290

6 0
3 years ago
Write a rule to describe the function shown.
I am Lyosha [343]

Answer:

y = -3x  

Step-by-step explanation:

(a) Slope

y = mx + b

Choose points (-3, 9) and (3, -9)

m = (-9 - 9)/(3 – (-3))

m = -18/(3 + 3)

m = -18/6

m = -3

=====

(b) y-intercept

y = mx +b

Choose point (0,0).

0 = 0 + b

b = 0

=====

(c) Equation of line

y = mx + b

y = -3x

6 0
3 years ago
Valerie predicts she will be able to hold her breath for 31 second while underwater. If she actually held her breath for 34 seco
Pani-rosa [81]
(predicted value - exact value)/exact value * 100
(31 - 34)/34 * 100 = 8.8%

6 0
3 years ago
Read 2 more answers
Help me with this,i really forgot how to do these type of questions
Montano1993 [528]
Work=speed times time (my equation to help me figure it out)

ok, 10 men take 84 days to complete a job
therefor, each man completes 1/10 of the job in 84 days
each man does 1/840 of the job per 1 day

so, if we had 5 more, or 15 men

15 times 1/840 times xdays=1 job complete
15/840 times xdays=1job
times both sides by 840/15
xdays=840/15
xdays=56
56 days it would take
5 0
3 years ago
The quotient of 9.2 x 10 6 and 2.3 x 10 2 expressed in scientific notation is
Virty [35]
What we know:
quotient 9.2 x 10^6/ 2.3 x 10²
in quotients exponents are subtracted of they have the same base, for example 10^6 and 10² have the same base of 10

What we need to find: quotient 9.2 x 10^6/ 2.3 x 10²
9.2 x 10^6        
--------------  =    4 x 10^4    
 2.3 x 10²

Here in this problem I divided 9.2 by 2.3 and got 4, since the solution was simple and clean meaning no repeated decimals I went ahead and divided the 10^6 by 10^2 and got 10^4.


Another method would be to expand both numbers then divide and do scientific notation again.
Remember to change to normal notation you move the decimal to the right using the number of the exponent.

9.2 x 10^6= 9200000
2.3 x 10²= 230

920000/230=40000

40000= 4 x 10^4 scientific notation

Use the method that is best for you or just know you can use either method to check your work.

4 0
3 years ago
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