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siniylev [52]
3 years ago
11

a metalsmith is mixing two molten metals, each containing different percentages of silver. the table shows the amount of each mo

lten metal used. which two expressions are both equivalent to t, the total number of grams in the mixture?
Mathematics
2 answers:
Likurg_2 [28]3 years ago
7 0
It would be much easier if you attached a table. Anyway I know what you need to do. Just make an equation and put the numbers from the table given you in the task. And you'll solve it.
sineoko [7]3 years ago
7 0

(15)(0.75) and 0.7(15 - x) + 0.9x

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If the sine of an angle equals to {2}/{5}, then the tangent of the angle could be:
Leona [35]

Answer:

If the sine of an angle equals to {2}/{5}, then the tangent of the angle could be:

<em>5. \frac{2}{\sqrt{21} }</em>

Step-by-step explanation:

  • Imagine a triangle
  • The sine of an angle is equal to the length of the opposite leg over the hypotenuse.
  • <em>HINT: SOHCAHTOA</em>

<u>To find the adjacent leg (a): </u>

Using the pythagorean theorem: a^{2} + b^{2} =c^{2}

- <em>a </em>and <em>b</em> are the lenght of the sides and <em>c </em>is the hypotenuse

we know one side and the hypotenuse. Therefore plugging into the formula we get:

a^{2} + 2^{2} =5^{2}

where <em>a</em> is the adjacent leg of the triangle, solving for a we get:

a^{2} =5^{2}- 2^{2}

a^{2} = 21

a = \sqrt{21}

<u>To find the tangent of the angle: </u>

Since tangent is opposite leg over the adjacent leg:

tan θ = \frac{2}{\sqrt{21} }

4 0
3 years ago
Zachary is 1 year older than his sister, Nicole. Jaycob is
shtirl [24]

Answer:

Zachary is 9, Nicole is 8, and Jaycob is 27.

Step-by-step explanation:

x=Zachary

y=Nicole

z=Jaycob

x+y+z=44

x*3=z

x-1=y

However, for now, let's just assume that  x and y are actually the same, and that the answer is actually 45.

so, x*3=z, and y*3 also equals z.

This is so that technically, 45/5=x, because z accounts for 3, and both x and y account for 1 each, meaning altogether it should be 5 you should be dividing by. 45/5=9, so x=9. Now that we have that figured out, we can solve the rest easily. 9-1=8, so there's your y, and 9*3=27. 27+9=36, and 36+8=44.

8 0
4 years ago
What is the measure of &lt;rst
Georgia [21]
The measure of RST is:

B: 81

162 is the measure of points RT, so dividing 162 by 2 will give you the angle RST measurements. 
4 0
3 years ago
Read 2 more answers
A cable is 9.5 m long. How long is the cable in decimeters
elena-s [515]

Answer:95

Step-by-step explanation:

trust

3 0
3 years ago
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1. Matt used a cup shaped like a cylinder to drink his morning milk. The dimensions of
BaLLatris [955]

Answer:

50.29 cm²

Step-by-step explanation:

Base area of a cylinder = πr²

π = 22/7

r = radius

For circular objects, the width is the same as the diameter of the object

the diameter is the straight line that passes through the centre of a circle and touches the two edges of the circle.

A radius is half of the diameter

radius = 8/2  = 4cm

Base area = (22/7) x 4² = 50.29 cm²

6 0
3 years ago
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