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Liono4ka [1.6K]
4 years ago
15

Need help in algebra fast Please help

Mathematics
1 answer:
Bogdan [553]4 years ago
8 0

Answer:

A

Step-by-step explanation:

because it's not equal to it is dashes ----

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Mr. Fink's economy car can travel 420 miles on a 12-gallon tank of gas. Determine how many miles he can travel on 8 gallons.
Sphinxa [80]

Answer:

280 miles

Step-by-step explanation:

So, 420 miles=12 gallons

That means that for 1 gallon you would be able to go 35 miles.

Just multiply that by 8. 35*8=280

3 0
3 years ago
I've been working on this for 2+ hours, so frustrated, my last tutor got it wrong too.
disa [49]

Answer:

20

Step-by-step explanation:

sin(28)       sin(x)

---------- =  -----------

   7               5

sin(28)* 5 = 7sin(x)

---------------------------

             7

sin(28) * 5

---------------- = sin(x)

       7

You have to seperate sin from (x). When you do that, it becomes inverse (sin^-1).

              sin(28) * 5

 sin^-1 (------------------)  = x

                    7

Imput that into you calculator, and you should get 19.59302173 (20 to the nearest degree)

Hope this helps.

6 0
3 years ago
The height of a triangle is 4 in. greater than twice its base. The area of the triangle is no more than 168 in.2. Which inequali
netineya [11]

Let

x-------> the length of the base of triangle

y-------> the height of the triangle

we know that

the area of the triangle is equal to

A=\frac{1}{2}xy

in this problem we have

A \leq 168\ in^{2}

so

\frac{1}{2}xy\leq 168 --------> equation 1

y=2x+4 --------> equation 2

Substitute equation 2 in equation 1

\frac{1}{2}x[2x+4]\leq 168

x^{2}+2x \leq 168

therefore

<u>the answer is</u>

The inequality that can be used to find the possible lengths, x, of the base of the triangle is  \frac{1}{2}x[2x+4]\leq 168 or x^{2}+2x \leq 168

5 0
4 years ago
Read 2 more answers
Solve for X:<br><br> tan36= 12/x
Andrej [43]
If you wanna solve for x, you have to try to get x by itself, right? 
so, 
<span>
tan36°= 12/x </span>
---> multiply both sides by x 
<span>
xtan36 = 12 </span>
---> now, solve for x by dividing both sides by tan36 

so, you need to do 12/tan36 

<span>so when you plug that into your calc, you get: 16.5165... which rounds to 16.52

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!</span>
4 0
3 years ago
What’s the GCf of 16 and 32
puteri [66]

Answer:

gcf-32

Step-by-step explanation:

factors of 16: 1, 2, 4, 8, 16

factors of 32: 1, 2, 4, 8, 16, 32

5 0
4 years ago
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