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Gre4nikov [31]
3 years ago
14

Ms.Hatch has 45 tests. This represents %60 of her 3 math classes. How many students does Ms.Hatch have?

Mathematics
1 answer:
STatiana [176]3 years ago
6 0
I would use a proportion

45students/60% = Xstudents/100% (cross multiply)
x=75 students

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lions [1.4K]

The second option

(Pie x 2.5 squared x height)

7 0
2 years ago
I need help with this ​
LuckyWell [14K]

Answer:

1st - Yes ; 2nd - Yes ; 3rd - Yes ; 4th - No

Step-by-step explanation:

8 0
3 years ago
∠QPS is a right angle and m∠QPR = 71°, what is m∠RPS?
natta225 [31]

Answer: <RPS = 161

Step-by-step explanation:

P is the common vertex in all of these angles. From this we know that these have to be adjacent angles (<QPR and <QPS) that equal the whole angle (<RPS)

<QPR+<QPS= <RPS

71+90= 161

(<QPS is a right angle. Right angles are equal to 90 degrees.)

8 0
3 years ago
Please help me solve this question
Anastasy [175]

Answer:

50

Step-by-step explanation:

Use pythagoreom theorem to determine the length of the hypotenuse:

a² + b² = c²

- assign side a to 30 and side b to 40

30² + 40² = c²

90 + 160 = c²

250 = c²

Now square root both sides to isolate side c:

√250 = √c²

50 = c

side c = 50

7 0
3 years ago
If the endpoints of AB have the coordinates A(9, 8) and B(-1, -2), what is the midpoint of AB?
pickupchik [31]
The midpoint, if the endpoints are (x₁,y₁) and (x₂,y₂):
(\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2})

(9,8) \\&#10;x_1=9 \\ y_1=8 \\ \\&#10;(-1,-2) \\&#10;x_2=-1 \\ y_2=-2 \\ \\&#10;\frac{x_1+x_2}{2}=\frac{9-1}{2}=\frac{8}{2}=4 \\&#10;\frac{y_1+y_2}{2}=\frac{8-2}{2}=\frac{6}{2}=3

The midpoint of AB is (4,3).
5 0
3 years ago
Read 2 more answers
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