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Andrew [12]
3 years ago
10

Find x.______________a0

Mathematics
1 answer:
velikii [3]3 years ago
4 0

Answer:

x=4

Step-by-step explanation:

Before we find x, we need to set up this triangle a little more. We need to find the triangle's altitude before we can solve for x. We will use the heartbeat method to find the altitude.

Let altitude = y; solve for y:

\frac{2}{y}=\frac{y}{6}

y^2=12

y=\sqrt{12}

y=2\sqrt{3}

Now that we know the altitude, we can use the Pythagorean Theorem to find the hypotenuse (x).

a^2+b^2=c^2

2^2+(2\sqrt{3})^2=c^2

4+12=c^2

c^2=16

c=4

Since c and x are the same; c is just the hypotenuse in the Pythagorean Theorem.

x=4

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When a jug is half-filled with marbles, it weighs 2.6 kg. If the jug weighs 4 kg when full, find the weight of the empty jug.
Fittoniya [83]

Answer:

1.2 kg

Step-by-step explanation:

filling the jug up half way adds 1.4 kg to the weight.

2 x 1.4 - 2.8 kg of marbles when full

4-2.8 = 1.2 kg

8 0
3 years ago
Read 2 more answers
Find the equation of a line parallel to y = x – 3 that contains the point (-2, 1).<br> Yeah
SashulF [63]

Answer:

The equation of a line parallel to y = x - 3 that contains the point (-2, 1) is:

  • y = x + 3

The graph of both the parallel equation is shown below to make you further understand the concept.

Step-by-step explanation:

The slope-intercept form of the line equation

y = mx+b

where

  • m is the slope
  • b is the y-intercept

Given the equation

y = x - 3

comparing with the slope-intercept form of the line equation

Slope m = 1

<u>Important Tip:</u>

  • As the parallel lines never intersect, therefore, they have the same slopes.

Thus, the slope of the parallel line is also 1.

As the parallel line contains the point (-2, 1).

so substitute m = 1 and (-2, 1) in the slope-intercept form of the line equation to determine the y-intercept of the parallel line

y = mx+b

1 = 1(-2) + b        ∵ (x, y) = (-2, 1) and m = 1

1 = -2 + b

switch sides

-2+b = 1

add 2 to both sides

-2 + b + 2 = 1 + 2

simplify

b = 3

Thus, the y-intercept b of the parallel line is:  b = 3

now substitute b = 3 and m = 1 in the slope-intercept form of the line equation to determine the  equation of the parallel line

y = mx + b

y = (1)x + 3

y = x + 3

Therefore, the equation of a line parallel to y = x - 3 that contains the point (-2, 1) is:

  • y = x + 3

The graph of both the parallel equation is shown below to make you further understand the concept.

From the graph:

  • The green line represents the equation y = x - 3
  • The black  line represents the parallel equation y = x + 3

It is clear that both lines are parallel.

6 0
3 years ago
What is the circumference of a circle with a diameter of 57 centimeters
ss7ja [257]
C = 2πr  or  C = πd

Diameter d = 57 cm

C = πd

C = π*57 = 57π

C ≈ 57 * 3.14159 = 179.07063

Exact circumference is  57π  cm  or

≈ 179.07 cm.
6 0
3 years ago
A baseball player reaches first base 3 out of 10 times he is at bat. If the baseball player bats 80 times, about how many times
Amanda [17]

Answer:

I think the answer is 24.

Step-by-step explanation:

I think the answer is 24 because if the baseball player hit the bat and ran the base 3 out of 10 times, then you would multiply 8 x 3 to get 24 out of 80. I don't know if this is the correct answer, this is just what I think it may be.

4 0
3 years ago
Rewrite without absolute value <br><br> y=|x−5|+|x+5|, if x&lt;−5<br><br> thank you
ioda

y = | x -5| + |x+5|

as range of x is

-5 < x < 5

we can see if we put x = 0 we get

y = 10

we put any value of x in given range first term is always negative without absolute. and 2nd term is always positive

so

y = | x -5| + |x+5|

= -( x-5) + x + 5

= - x + 5 + x + 5

= 10

so

y = 10 where -5 < x < 5

8 0
4 years ago
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