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Roman55 [17]
3 years ago
10

A

Mathematics
1 answer:
Advocard [28]3 years ago
5 0

Answer:

3.6

Step-by-step explanation:

round ur previous answers to the nearest tenth then subtract them.

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Penn draws a triangle with one 90 degree angle. What could be the measures of the other two angles in penn’s triangle?
stellarik [79]

Answer:

both 45 degrees

Step-by-step explanation:

90 + 45 + 45 = 180 degrees

Hope this helps!

4 0
3 years ago
Read 2 more answers
The temperature at 3 a.m. was 3 1/2 degrees Fahrenheit. For the next 7 hours, the
ValentinkaMS [17]

Answer:

The equation 7(-1 1/2) = -10 1/2 means that the temperature change from 3 a.m. to  10 a.m. was -10 1/2 degrees

Step-by-step explanation:

Initially, the temperature was 3 1/2 degrees Fahrenheit at 3 a.m. From 3 a.m., the temperature change at 1 1/2 degrees per hour for the next 7 hours. This means that the temperature change in the next 7 hours is:

Temperature change = 7(-1 1/2) = -10 1/2

In the next 7 hours from 3 a.m. to 10 a.m., that is at 10 a.m. (3 a.m. + 7 hours), the temperature change was -10 1/2 degrees Fahrenheit.

Hence:

The equation 7(-1 1/2) = -10 1/2 means that the temperature change from 3 a.m. to  10 a.m. was -10 1/2 degrees

4 0
3 years ago
Estimate an 18% tip for a $30.80 meal. A. $5.50 B. $9.10 C. $3.08 D. $1.80
kaheart [24]

Answer:

A

Step-by-step explanation:

18%=18/100=0.18

0.18*30.80=5.544 or about $5.50. Hope this helps!

3 0
4 years ago
I need to know the answer please help mr
lisabon 2012 [21]

Answer:

He multiplied 25 by 1 and then multiplied 25 by 9 correctly. He added the two partial products correctly

Step-by-step explanation:

5 0
3 years ago
Using the discriminant , how many real solutions does the following quadratic equation have?
Andreyy89
Hi,

Work:

Equation;

2 {x}^{2} + 7x - 15 = 0

Solving:

2x^{2} + 7x - 15 = 0 \\ 2 {x}^{2} + 10x - 3x - 15 = 0 \\ 2x \times (x + 5) - 3x - 15 = 0 \\ 2x \times (x + 5) - 3(x + 5) = 0 \\ (x + 5) \times (2x - 3) = 0 \\ \\ x + 5 = 0 \\ 2x - 3 = 0 \\ \\ x = - 5 \\ x = \frac{3}{2}

Final solutions:

x1 = - 5 \\ x2 = \frac{3}{2} = 1 \frac{1}{2} = 1.5

The answer is: Quadric equation has two real solutions.

Hope this helps.
If you need any additional explanation comment below and I'll reply.
r3t40
3 0
3 years ago
Read 2 more answers
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