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ziro4ka [17]
3 years ago
14

What value will make the equation true?

Mathematics
1 answer:
Viktor [21]3 years ago
6 0

Answer:

-.6

Step-by-step explanation:

-2.1 - x = -1 1/2

Change the fraction to a decimal

-2.1 -x = - 1.5

Add 2.1 to each side

-2.1 -x+2.1 = -1.5 +2.1

-x = .6

Multiply each side by -1

x = -.6

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An altitude is drawn from the vertex of an isosceles triangle, forming a right angle
Hatshy [7]

Answer:56.8 inches

Step-by-step explanation:

For perimeter we must find the lengths of the 2 diagonal sides of the triangle which are the same because it is isosceles.

the triangle is cut directly in half so both halves of the base are 17/2

17/2 = 8.5

solve through pythagoren theorum

altitude^2 + (half of base)^2 = (diagonal length)^2

18^2 + (8.5)^2 = (diagonal length)^2

324 + 72.25 = (diagonal length)^2

396.3 = (diagonal length)^2

\sqrt{396.3} = diagonal length

diagonal length = 19.9

diagonal length + diagonal length + base = perimeter

19.9 + 19.9 + 17 = perimeter

56.8 inches = perimeter

6 0
2 years ago
A clothing pattern calls for 4.81 yd2 of fabric. How many square inches of fabric does the pattern use?
Vera_Pavlovna [14]
Total square inches of fabric. 
To answer this question you need to know how many square inches makes up one square yard.

1296 square inches makes one square yard. 

Therefore total square inches =
1296x4.81= 6233.76 square inches
4 0
3 years ago
Read 2 more answers
The average score of students in Mr. Blake's science class was 73 with a standard deviation of 11, while the average score of st
Pani-rosa [81]

Answer:

Mr Blake's science class

Step-by-step explanation:

The standard deviation is a measure of variation.

It tells us how far each of the data set in the distribution are far from the mean of the distribution.

The average score of students in Mr. Blake's science class was 73 with a standard deviation of 11, while the average score of students in Mrs. Arnold's class was 75 with a standard deviation of 10.

Since 11>10, Mr Blake's science class is more variable than Mrs. Arnold's class.

3 0
3 years ago
X+3/2=6 linear equations
Gre4nikov [31]

Answer:

x=9

Step-by-step explanation:

Multiply both sides by 2.

x+3= 12

Subtract both sides by 3.

x=12-3

x=9

4 0
3 years ago
Find the missing number:
Makovka662 [10]

Answer:

20%

Step-by-step explanation:

If you see they say that the number decreased is 10% each and they say it two times. we could see that the missing number is as big as the length of two 10% together, so if you add them two you get 20%.

7 0
3 years ago
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