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lina2011 [118]
3 years ago
12

Plz plz help is for my brother his in first grade

Mathematics
2 answers:
Mkey [24]3 years ago
7 0

4+2 = 6    a a a a + a a = a a a a a a

2+4 = 6  a a + a a a a= a a a a a a


Tommy is correct  They are both equal to 6

MAVERICK [17]3 years ago
5 0
Tommy is wrong it is equal to 6 and using words to my is wrong because if u add 4+2 it equals 6
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Solve equation <br><br> r/3-4=11<br><br> r = 45 <br><br> r = 35<br><br> r = 33<br><br> r = 28
Molodets [167]

Answer:

r=-11

Step-by-step explanation:

7 0
2 years ago
A radio arm saw has a circular cutting blade with a diameter of 10 inches and it spins at 2000rpm if there are 12 cutting teeth
FinnZ [79.3K]

Answer:

12565.11 teeth approximately cut cross the cutting surface per seconds.

Step-by-step explanation:

Since the diameter is 10inches, the circumference of the arm saw is 10π (circumference is πd where d is diameter).

The number of teeth on the cutting blade can be gotten by multiplying the diameter by 12 since we have 12 teeth per inch on the arm saw

Number of teeth on saw = 12 x 10π = 120π.

To get the number of teeth that cross the cutting surface in 2000rpm we multiple it by the total number of teeth in just one rpm.

So we have 2000 x 120π. But since we are asked to find it in revolution per seconds then 2000r/m = 2000r/60s ≈ 33.33

Therefore, we have

33.33 x 120π ≈ 12565.11 teeth

7 0
3 years ago
the ratio of goats to sheep at a university research farm is 4: 7. The number of sheep at the arm is 28. what is the number of g
GalinKa [24]
4+7=11 i.e. The whole.
7/11=28

1/11=4
Goats are 4/11 therefore
4 x 4= Ans
All the animals add up to 44 and if you check w/ 7/11 it is correct.
4 0
3 years ago
Add.
Vikki [24]

Answer:

5/6

Step-by-step explanation:

9/30 + 16/30 = 25/30 = 5/6

3 0
3 years ago
Read 2 more answers
What are the roots of the equation x^2+4x-5=f(x)
enyata [817]

Answer:

The roots are -5, 1.

Step-by-step explanation:

f(x) = x^2 + 4x - 5

The roots of a function are also the Ox intercepts, so basically we're finding when is the function equal to '0'.

x^2 + 4x - 5 = 0\\(x-1)(x+5) = 0\\x_1 = 1, x_2 = -5

3 0
3 years ago
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