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4 years ago

???? Girliessss wyaaaaa

Mathematics

1 answer:

Usimov [2.4K]4 years ago

7 0

Answer: C) The three sides have the same length

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Equilateral triangles have three angles of the same degree (60 degrees) and three sides of the same length. Also, since you know the angles are the same, you can say that the side lengths are the same.

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Yesterday, the temperature at noon was 43.6 °F. By midnight, the temperature has decreased by 15.3 degrees. What was the tempera

ELEN [110]

Answer:

Temperature at midnight is $-15.9$ °F.

Step-by-step explanation:

Given: The temperature at noon was $43.6$ °F. By midnight, the temperature has decreased by $15.3$ degrees.

To find: The temperature at midnight.

Solution:

The temperature at noon was $43.6$ °F.

Now, by midnight, temperature has decreased by $15.3$ degrees.

So, first we need to convert the temperature in °F.

We know that, $F=\frac{9}{5}C+32$ , where F is temperature in Fahrenheit and C is temperature in Celsius.

So, $F=(\frac{9}{5} \times 15.3)+32$

$\implies F=59.5$

So, by midnight, temperature has decreased $59.5$ °F

Therefore, temperature at midnight is $43.6-59.5=-15.9$ °F

Hence, temperature at midnight is $-15.9$ °F.

5 0

3 years ago

8. Evaluate the expression a + b when a = 2.5 and b = -10.8.

vlada-n [284]

Steps:
___________
a+b

2.5+(-10.8)

= -8.3

8 0

4 years ago

Read 2 more answers

Alex scored 98,72, and 87 on his first three math test. What must he score on the next test to have an average of at least 86 (P

ss7ja [257]

Answer:

$\huge\boxed{\text{At least an } 87\%}$

Step-by-step explanation:

In order to find what score Alex must earn to have an average of 86 on all his tests, we need to first note what the formula to find the average of a data set is.

$\displaystyle \frac{x_1+x_2+...x_n}{n}$

What the formula means is that we have to add up all the values then divide by the total number of values.

Let's represent our unknown number as $x$ .

$\displaystyle \frac{98+72+87+x}{4} \geq 86$ (since we want AT LEAST an 86).

Let's solve this inequality for x.

$\frac{98+72+87+x}{4} \cdot 4 \geq 86 \cdot 4$
$98+72+87+x \geq 344$
$257 + x \geq 344$
$257 + x - 257 \geq 344 - 257$
$x \geq 87$

So, Alex must score at least an 87% on his next quiz to have an average of 86%.

Hope this helped!

8 0

3 years ago

How do you do this problem?

insens350 [35]

It is helpful to become familiar with the rules for secants of a circle.

The product of the numbers on the same chord is the same.
.. 2*x = 5*8
.. x = 20

_____
The picture is not drawn to scale. (They almost never are.)

7 0

4 years ago

What does a residual value of 0.8 mean in reference to the line of best fit?

notka56 [123]

Answer:

i think its -The given point is 0.8 units above the line of best fit

Step-by-step explanation:

only because if it were -0.8 it would be below the line

6 0

3 years ago

Read 2 more answers