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MrMuchimi
4 years ago
5

Math help? 13 points!

Mathematics
1 answer:
dybincka [34]4 years ago
5 0
The answer is the fourth option. I solved using mental math.
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Find the coefficient of x4 in the expansion (2x + 3)5.
VashaNatasha [74]

Answer:

10

Step-by-step explanation:

The expansion of this is 10x+15. So, the coefficient of x is 10 in this equation.

4 0
3 years ago
Its due tomorrow need help!!
IrinaVladis [17]

Let s represent the measure of the second angle.

The measure of the first angle is 15° less than the second, so we can represent the first angle by (s-15).

The measure of the third angle is 45° more than half the second, so we can represent the third angle by (45+(s/2)).

The sum of these angles is 180°, so we can represent the sum as

... (s-15) + s + (45+s/2) = 180

Collecting terms, we have

... 2.5s +30 = 180

... 2.5s = 150 . . . . . . subtract 30

... s = 150/2.5 = 60 . . . . divide by the coefficient of s

The first angle is 60-15 = 45.

The second angle is 60.

The third angle is 45+60/2 = 75.

_____

<u>Check</u>

The sum of the three angles is 45 +60 +75 = 180.

6 0
3 years ago
In a choir, the ratio of boys to girls is 5 to 6. There are 10 boys in the choir. What is the total number of boys and girls in
lidiya [134]

Answer:

22

Step-by-step explanation:

Boys to Girls

5 to 6

10 to ?

Since 10 is twice as much as 5, we have to multiply the number of girls by 2. 6 times 2 is equal to 12. Then, since we need to find the total number of boys and girls, we have to add both sides. 10 (boys) plus 12 (girls) equals 22.

5 0
3 years ago
Read 2 more answers
X^2- 20x + y^2 - 10y+25=0 <br> Identify the value of the radius and center is the circle
lbvjy [14]

Answer:

Center = (10, 5)

Radius = 10

Step-by-step explanation:

Look at the picture

8 0
4 years ago
Distance of the point P(3,-4) from the oirgin is?
Naily [24]

Answer:Answer: point (3,-4) is 3 units to the right of the origin and 4 down

Step-by-step explanation: easiest to graph

4 0
3 years ago
Read 2 more answers
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