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Dimas [21]
3 years ago
6

A teacher uses a stem-and-leaf plot to record the typing speeds of her students, in words per minute.

Mathematics
1 answer:
vichka [17]3 years ago
4 0
75 is the median
And 79 is the mode
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Help on questions 37 and 38 please!
jeka94

Answer:

Step-by-step explanation:

38.

M=\frac{1}{2} (x_{1}+x_{2})\\2M=x_{1}+x_{2}\\x_{1}=2M-x_{2}

37.

S=\frac{ab^2}{3} \\3S=ab^2\\b^2=\frac{3S}{a} \\b=\pm\sqrt{\frac{3S}{a} }

6 0
3 years ago
Solve the following equation 1÷x=2​
Troyanec [42]

Answer:

Your answer would be x = 1/2

Step-by-step explanation:

1/x = 2

You would divide x on both sides...then they would cancel each other out.

But now you're left with...

1 = x•2

So, re-order the terms so constants are on the left

1 = 2x

Divide 2 on both sides...

Now you're left with

1/2=x or more practically it would be x = 1/2

Hope this helps!

5 0
3 years ago
If f(x) = 4x2 + 1 and g(x) = x2 - 5, find (f - g)(x).<br><br> HELPPPP NOWWW
4vir4ik [10]
C. 3x^2+6 is the answer:)
6 0
3 years ago
What is the rule for a reflection across the y axis?
Ilya [14]

Answer:

When you reflect a point across the y-axis, the y-coordinate remains the same, but the x-coordinate is transformed into its opposite (its sign is changed). ... the line y = x is the point (y, x). The reflection of the point (x,y) across. the line y = -x is the point (-y, -x).

Step-by-step explanation:

6 0
3 years ago
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Can somebody help me with this?
lesya [120]

Answer:

141 °

since they are supplementary angles and they always add to 180 °

4 0
3 years ago
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