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lukranit [14]
2 years ago
12

Make like units, and then add. * 1 1/2+2/5

Mathematics
1 answer:
aksik [14]2 years ago
3 0

Answer:

1 5/10+4/10= 1 9/10

Step-by-step explanation:

the answer is 1 and 9/10ths

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If q is directly proportional to (p-1)^2 and q=20 when p=3,find the values of p when q=80​
Nastasia [14]

Answer:

p = 17 and -15

Step-by-step explanation:

If q is directly proportional to (p-1)², this can be written as;

q = k(p-1)²

If q = 20 when p = 3

20 = k(3-1)²

20 = 2²k

20 = 4k

k = 5

To get p wen q = 80

80 = 5(p-1)²

16 = (p-1)²

p-1 = ±√16

p-1 = 16 and p-1 = -16

p = 17 and p=-16+1

p = 17 and -15

7 0
2 years ago
4y-2x+3x-7y<br><br> How do I solve this?
dybincka [34]

4y - 2x + 3x - 7y

Just group the terms

3x - 2x + 4y - 7y

x - 3y

8 0
3 years ago
Read 2 more answers
Please can someone help quick and now 115 students choose to attend one of three after school activities: football, tennis or ru
7nadin3 [17]

Answer:

only 20 students would

Step-by-step explanation:

the probability would be very since it is 20 out of 115. i hope this helped

3 0
2 years ago
Consider the function f(x)=-3x^2 +7x -k. [3 Marks] a) For what values of k will the function have no zeros? b) For what values o
Anna35 [415]

Answer: a) k >4.08

b) k = 4.08

c) k<4.08

Step-by-step explanation:

Since we have given that

f(x)=-3x^2+7x-k

a) For what values of k will the function have no zeros?

It mean it has no real zeroes i.e. Discriminant < 0

As we know that

D=b^2-4ac

Here, a =-3

b = 7

c = -k

So, it becomes,

D

b) For what values of k will the function have one zero?

It means it has one real root i.e equal roots.

So, in this case, D = 0

So, it becomes,

D=b^2-4ac=0\\\\D=7^2-4\times -3\times -k=0\\\\49-12k=0\\\\49=12k\\\\k=\dfrac{49}{12}\\\\k=4.08

c) For what values of k will the function have two zeros?

It means it has two real roots.

In this case, D>0

So, it becomes,

D=7^2-4\times -3\times -k>0\\\\49-12k>0\\\\-12k>-49\\\\12k

Hence, a) k >4.08

b) k = 4.08

c) k<4.08

3 0
3 years ago
The formula to convert °F to °C is C = (F – 32).<br><br>Convert 50°C to °F
Harman [31]

50*C x 9/5 + 32 = 122 *F


4 0
3 years ago
Read 2 more answers
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