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2 years ago

Please help on this!!! Thanks!!

Mathematics

1 answer:

gtnhenbr [62]2 years ago

7 0

Answer:

7y=4y +9(corresponding sides of congruent triangle)

or,7y-4y=9

or, 3y=9

or,y=9/3

so,y=3

now

ST=7y=7×3=21

again

TU=4y+9=4×3+9=21

hope this will help you more

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X^2 - y^2 = 100

luda_lava [24]

Answer:

Step-by-step explanation:

Let's start by rewriting the second equation in terms of "x":

$x+y=5$

Subtract y from both sides:

$x=5-y$

Now, substitute "5-y" for "x" in the first equation:

$(5-y)^2-y^2=100$

Note that:

$(a-b)^2=a^2-2ab+b^2$

$25-10y+y^2-y^2=100$

Cancel out like terms:

$25-10y=100$

Subtract 25 from both sides:

$-10y=75$

Divide both sides by -10

$y=\frac{75}{-10}=\frac{15}{-2}=-\frac{15}{2}$

Now, substitute this value back into either of the equations to solve for x.

$x+y=5\\x-\frac{15}{2}=5\\$

Add 15/2 to both sides:

$x=5+\frac{15}{2}\\x=\frac{10}{2}+\frac{15}{2}\\x=\frac{25}{2}$

Now, find the difference:

$x-y=\frac{25}{2}-(-\frac{15}{2})=\frac{25}{2}+\frac{15}{2}=\frac{40}{2}=20$

8 0

2 years ago

HELP ME PLEASEEEEEE!!!!

agasfer [191]

The answer will be
15m+10

6 0

2 years ago

What is the simplified base for the function f(x) = 2? 2 3 9 18

Nina [5.8K]

This is 9 I would have to say.

5 0

3 years ago

Read 2 more answers

Help please. and thank you

Dominik [7]

Every Triangle adds up to 180 degrees

180 - 63 = 117 | 117 - 56 = 61 so x = 61

12y + 3 = 51 so y = 4

8 0

2 years ago

Make q the subject of the formula 2(q+p) = 1 + 5 q

CaHeK987 [17]

Answer:

q = 2/3p - 3

Step by step:

2q+2p = 1+5q
2q - 5q = -2p + 1
-3q = -2p + 1
q = 2/3p - 3

3 0

2 years ago