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rusak2 [61]
3 years ago
9

Evaluate the expression 2x - 5 when x = -5 C) 5 D) 15 A)-5 B) -15

Mathematics
1 answer:
IRINA_888 [86]3 years ago
8 0

Answer:

B) -15

Step-by-step explanation:

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Round to the nearest tenths Plzz show step by step
zhuklara [117]
So first, separate the triangle from the rectangle. Then calculate the area of the rectangle, length X width. 24 times 8 = 192. Now, for the triangle, we must first find its base. You see the two 6 yd's ??? We add that and we subtract that from 24. We get 12. Since we have to multiply the base times height and divide it by 2 (this is the formula for a triangle), we must find the triangle's height. You can see the red dash going through the shape and it says 16. To the right side of that, we see 8, so we instantly know that the half of that red dash is 8yd. So the triangle's height is 8yd. Multiply 12 by 8 =96. Divide it by two because a triangle is the half of a square, then we get 48yd. Add 48 by 192 and we get 240. The area of this shape is 240 yd.

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8 0
2 years ago
No Question, this account was set up in error.
Dmitry [639]

Answer:

is the question no questions question ❓

6 0
1 year ago
A local weather enthusiast wants to see if the last five summers have been warmer than normal for Eloy, Arizona. From the Nation
lys-0071 [83]

Answer:


Step-by-step explanation:

This is a question on hypothesis testing.

Population mean based on 30 year average for July was 90 with

a std deviation of 2.1

Sample of 5 shows average 93.5

To check whether sample average = population average

H0: x bar =90

Ha: x bar not equal 90(Two tailed test)

Test statistic = \frac{93.5-90}{\frac{2.1}{\sqrt{5} } }

=3.73

Since this lies outside the range (-1.96, 1.96) we reject null hypothesis

Hence we cannot say sample mean equals 90

5 0
3 years ago
Read 2 more answers
Jacques built a house that measured 75 feet long by 30 feet wide.
Sergio039 [100]
The area is 2250 square feet.
4 0
3 years ago
Jika x1 dan x2 merupakan akar akar persamaan x2+5x-2=0, maka (x1+2x2)(x2+2x1)=
Anna71 [15]
-8 ........................

6 0
3 years ago
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