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SOVA2 [1]
2 years ago
13

I need help on this last part of my quiz

Mathematics
1 answer:
Anarel [89]2 years ago
6 0

Answer:

she got yassifiedd

Step-by-step explanation:

its always the yasmine asking us questions and not knowing ANYTHING..

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What is the value of y in the equation 5x + 2y = 20, when x = 0.3?
Nikolay [14]
Y=9.25 because inorder to solve this we need to first take 5*.3 which equals 1.5 now that we have this we can move on we now have the equation 1.5 + 2y = 20 so now we need to continue working on getting y by it self so we subtract 1.5 from each side and then that leaves us with 2y=18.5 now we divide by 2 which leaves us with y=9.25 enjoy=)
4 0
3 years ago
One-fourth of a number is 3 more than one-seventh of the same number.<br> What is the number?
uysha [10]
I set it up as an equation. 1/4x = 1/7x + 3. After you solve it out, it’s 28.
4 0
3 years ago
Read 2 more answers
How many pounds of a 23% zinc alloy must be mixed with a 42% zinc alloy to make 516 pounds of a 37.25% zinc alloy?
nydimaria [60]

Answer:

(A)129 Pounds

Step-by-step explanation:

Let x be the number of 23% zink alloy

Therefore:

Since the total result is 516 pounds

The number of pounds of 42% zink alloy =516-x pounds

We then have the resulting equation:

0.23x+0.42(516-x)=0.3725*516

0.23x+216.72-0.42x=192.21

Colect like terms

0.23x-0.42x=192.21-216.72

-0.19x=-24.51

Divide both sides by 129

x=129 pounds

Therefore, the number of pounds of 23% zink alloy that must be mixed is 129 pounds.

6 0
3 years ago
Answer the question above ​
Vera_Pavlovna [14]

Answer:

tan\:\left(\frac{5\pi }{6}\right)=tan\left(-\frac{\pi }{6}\right)

Option A is correct.

Step-by-step explanation:

We need to find equivalent of tan\:\left(\frac{5\pi }{6}\right)

First we solve tan\:\left(\frac{5\pi }{6}\right)

We get -\frac{1}{\sqrt{3} }

Now checking all the options.

Option A: tan\:(-\frac{\pi}{6} )

Solving tan\left(-\frac{\pi }{6}\right)\: we\: get\: \mathbf{ -\frac{1}{\sqrt{3} }}

Option B: tan\left(\frac{7\pi }{6}\right)

Solving tan\left(\frac{7\pi }{6}\right)\: we\: get\: \mathbf{\frac{1}{\sqrt{3} }}

Option C: cot\left(\frac{5\pi }{6}\right)

Solving cot\left(\frac{5\pi }{6}\right)\:we\:get\:\mathbf{-\sqrt{3} }

Option D : tan\left(-\frac{5\pi }{6}\right)

Solving tan\left(-\frac{5\pi }{6}\right) \:we\:get:\mathbf{\frac{1}{\sqrt{3} } }

So, looking at the options, only Option A has the same result as given question

So, tan\:\left(\frac{5\pi }{6}\right)=tan\left(-\frac{\pi }{6}\right)

Option A is correct.

3 0
3 years ago
Simplify each expression numbers 2-5
svetoff [14.1K]

Answer:

2. 135

3. 8

4. 9/49 or 0.18367346…

5. b2/125

Step-by-step explanation:

( I couldn't  see what b was equal to if you showed it. And the b2 is b squared)

3 0
3 years ago
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