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Vilka [71]
3 years ago
9

Please help! Please explain how to do this, I am so lost.

Mathematics
1 answer:
alexdok [17]3 years ago
8 0
Ok, so we know that RST is equal to 6x+12
And RST is also equal to 78 + 3x-12
so we set them equal to each other

6x + 12 = 3x - 12 + 78
And simplify
3x = 54
x = 18

Finally, we solve for the angle with 18 for x

6(18) + 12
108 + 12
120

Hope this helps
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The lengths of two sides of a triangle are 15 inches each. The third side measures 10 inches. What type of Triangle is this?
jasenka [17]

Answer:

An isosceles triangle

Step-by-step explanation

Isosceles triangles have 2 same sides and one differing one

7 0
3 years ago
Help me what is the answer ?
pentagon [3]

Answer:

Correct choce is (a). 30.

Step-by-step explanation:

Given equation is f(x)=x^2-x.

Now we need to find the value of (fof)(3). Then select correct matching choice from the given choices. Where given choices are:

(a). 30

(a). 33

(a). 6

(a). -6

Now let's find  (fof)(3)

(fof)(3)=f(f(3))

(fof)(3)=f(3^2-3)

(fof)(3)=f(9-3)

(fof)(3)=f(6)

(fof)(3)=6^2-6

(fof)(3)=36-6

(fof)(3)=30

Hence correct choce is (a). 30.

7 0
3 years ago
Read 2 more answers
Please help asap! (05.02)Mr. Morris is going to save money and replace his sailboat's mainsail himself. He must determine the ar
Ugo [173]

Answer:

300ft²

Step-by-step explanation:

you can make it a rectangle- move the dotted section to the other side and its a rectangle. area of a rectangle=bxh

20ftx15ft=300ft²

hope it helps :)

8 0
3 years ago
Read 2 more answers
I need help here is the imagen and thank you!!
mojhsa [17]

Answer:

so I don't have a calculator with my but first answer is 9 and second answer is 14 squared plus 14 squared and then you square root it. third answer is 24 squared equals x squared plus x squared.

3 0
3 years ago
Help me please thanks​
Svetach [21]

Answer:

Step-by-step explanation:

To the nearest 10 is 300 - 298

To the nearest 100 is 500 - 549

To the nearest 100 is 700 - 698

3 0
3 years ago
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