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kirill [66]
4 years ago
14

Find the value of x pls

Mathematics
2 answers:
hammer [34]4 years ago
6 0
The answer should be 108

UNO [17]4 years ago
3 0

1- 92
2-35
3-43
4-70
5-
6- second answer
7- first answer
8- first answer
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Tomas works as an underwater photographer. He starts at a position that is 19 feet below sea level. He rises 8 feet, then descen
saveliy_v [14]

Answer:

-19 + 8 - 18 = -29

he is 29 feet below sea level when he takes the photo

Step-by-step explanation:

5 0
3 years ago
There are three kids. The sum of individual squares of their body weights (2 + 2 + 2) is 100. The sum of the product of their we
Mashcka [7]

Answer:

20

Step-by-step explanation:

Givens

Let child one = x

Let child two = y

Let child three = z

Equations

x^2 + y^2 + z^2 = 100

xy + xz + yz = 150

Solution

There's a trick here. The square of their weights added together is equal (with some modification) to the given conditions. Start by squaring (x+y+z).

(x + y + z)^2 = x^2 + y^2 + z^2 + 2xy + 2xz + 2yz

Take out 2 as a common factor from the last three terms.

(x + y + z)^2 = (x^2 + y^2 + z^2+ 2(xy + xz + yz) )

Substitute the given conditions into the equation. (x^2 + y^2 + z^2) = 100 and 2*(xy + xz + yz) = 2 * 150

(x + y + z)^2 = 100 + 2*150

(x + y + z)^2 = 100 + 300

(x + y + z)^2 = 400

Take the square root of both sides.

sqrt(x+y+z)^2 = sqrt(400)

x + y + z = 20

Note

This answer tells you nothing about the values of x y and z. On the other hand it does not ask for the values of x y and z.

4 0
3 years ago
A cleaning service orders 7 large bottles and 14 small bottles of a cleaning product. Each large bottle has 124 ounces. Each sma
PolarNik [594]

Answer:

The total amount of cleaning product the cleaning service orders is 1,764 ounces

Step-by-step explanation:

Here, we are interested in knowing the total amount of cleaning product ordered by the cleaning service.

To get this, we simply multiply the number of bottles by the weight and add up both;

Mathematically, that would be;

7(124) + 14(64) = 868 + 896 = 1,764 ounces

7 0
4 years ago
Read 2 more answers
For what values of a the following expressions are true: |a−5|=5−a
julia-pushkina [17]

Answer:

Whenever  a\leq 5.

Step-by-step explanation:

We can play around with some numbers and develop some rules for this equation.

Note that the number 5 and -5 are used here, so let's try using 5 as a.

|5-5| = 5-5\\|0| = 0\\0 = 0

So 5 works. Let's try a random number like 3.

|3-5| = 5-3\\|-2| = 2\\2 = 2

Okay, with this info we know that we might be able to develop one rule that a. Just to test, let's try 0, -3, and -5.

|0-5| = 5-0\\|-5| = 5\\5 = 5

Zero works.

|-3 - 5| = 5-(-3)\\|-8| = 8\\8 = 8

-3 works.

|-5 -5| = 5-(-5)\\|-10| = 10\\10 = 10

-5 works. Now, this might stop here making the equation -5 \geq  a \leq  5, so let's test a number outside of -5 - say -20.

|-20 - 5| = 5-(-20)\\|-25| = 25\\25 = 25

Yes! This works, so a works for this equation as long as a \leq 5.

Hope this helped!

8 0
3 years ago
Read 2 more answers
Ab - 0.5b when a = 1 and b = 5
Korolek [52]

Answer:

2.5

Step-by-step explanation:

a = 1

b = 5

ab

= 1 x 5

= 5

0.5b

= 0.5 x 5

= 2.5

ab - 0.5b

= 5 - 2.5

= 2.5

4 0
3 years ago
Read 2 more answers
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