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BaLLatris [955]
3 years ago
10

The high temperature on Friday was 8 degrees above zero. The low temperature was 3 degrees below zero. Which expression gives th

e average of the low and high temperatures?
Please hurry I am timed

Mathematics
1 answer:
alexandr1967 [171]3 years ago
8 0

Answer:

Option 2, (-3+8)/2

Step-by-step explanation:

Average: Sum of two numbers/ How many numbers

Sum: -3+8

Amount of Numbers: 2

(-3+8)/2

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Write an expression for the number of days in y hours.
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Answer:

The number of days in y hours is y/24

Step-by-step explanation:

Here, we want to write an expression

Mathematically;

1 day = 24 hours

? days = y hours

? days = (y * 1)/24

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4 0
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How do you simply these expressions?<br> a. (1/2)^-3 b. (3/5x)^-1
gulaghasi [49]
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3 0
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45-45-90 triangúlese shown<br><br> Help please <br><br><br> Will give u points
lbvjy [14]

Answer:

x = 7 , y = 7\sqrt{2}

Step-by-step explanation:

A 45- 45- 90 triangle is an isosceles right triangle with the 2 legs being congruent , that is

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Using Pythagoras' identity in the right triangle, then

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y = \sqrt{98} = \sqrt{49(2)} = \sqrt{49} × \sqrt{2} = 7\sqrt{2}

4 0
2 years ago
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The altitude of an equilateral triangle is 5 cm. what is the length of a side of the triangle?
Grace [21]

Answer:

The length side of the triangle is \frac{10\sqrt{3}}{3}\ cm

Step-by-step explanation:

we know that

The equilateral triangle has three equal sides and three equal internal angles of measure of 60 degrees each.

Let

b------> the length side of the equilateral triangle

Applying Pythagoras theorem

b^{2}=(b/2)^{2}+5^{2}\\\\ b^{2}-(b/2)^{2}=25\\\\ (3/4)b^{2}=25\\ \\b^{2} =25*4/3\\ \\b=\frac{10}{\sqrt{3}}\ cm\\ \\b=\frac{10\sqrt{3}}{3}\ cm

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4 years ago
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7 0
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