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3 years ago

The triangles are similar. Find the value of x.

Mathematics

2 answers:

LUCKY_DIMON [66]3 years ago

5 0

Answer: 95

Step-by-step explanation:

I am in geometry this year. We know by the AA thorem that all three angles are similar. Since both triangles have sides 45 and 40. We know that the last side has to 95.

Hope this helps :)

yarga [219]3 years ago

4 0

The last side is 95

Hope this helped!

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The ration of girls to boys is 3 to 4 if there are 48 boys how many girls are there

Luden [163]

Answer:

There is 36 girls.

Step-by-step explanation:

So basically what I did was that since 4×12 is 48 I did 3×12 which gave me 36 :/

4 0

3 years ago

A quadratic equation is shown below:

lys-0071 [83]

16x^2 − 8x + 1 = 0

Part A:
b^2 - 4ac for ax^2 + bx + c

16x^2 − 8x + 1 = 0
so in this case,
a = 16, b = -8, c = 1

b^2 - 4ac
=(-8)^2 - (4 * 16* 1)
= 64 - 64
= 0
because it's equal 0, answer is one solution

Part B:

4x^2 − 8x − 45 = 0
solve the equation by factoring 
= (2x - 9)(2x + 5)

set (2x - 9)(2x + 5) equal to 0 to solve for x
so
(2x - 9)(2x + 5) = 0
2x - 9 = 0
x = 9/2
x = 4.5

2x + 5 = 0
x = -5/2
x = -2.5
answer
x = -2.5 or x = 4.5

Hope it helps

5 0

3 years ago

????????????????????

Snowcat [4.5K]

Greetings!

Substitute:
$x+y=1000 \\ x=1000-y$
Now we can input this into the other equation so, we only have one variable.

Solve for y.
$0.05(1000-y)+0.06y=57$
Distribute the parenthesis.
$50-0.05y+0.06y=57$
Combine Like Terms.
$50-0.01y=57$
Add -50 to both sides.
$(50-0.01y)+(-50)=(57)+(-50)$
Simplify.
$0.01y=7$
Divide both sides by 0.01.
$(0.01y)/0.01=(7)/0.01$
Simplify.
$y=700$

Input this value into the other equation.
$x+700=1000$
Add -700 to both sides.
$(x+700)+(-700)=(1000)+(-700)$
Simplify.
$x=300$

The answer would be 300,700

Hope this helps.
-Benjamin

8 0

3 years ago

PLEASE HELP IM DESPERATE I DID THIS KHAN AT LEAST 7 TIMES IM SO DEPRESSED I JUST WANT TO GET THIS DONE WITH!

crimeas [40]

Answer:

y = (-3/2) x + 3

Step-by-step explanation:

The line passes through (0, 3) and (2, 0)

Slope = (0 - 3)/(2 - 0) = -3/2

Let y = (-3/2) x + b

Use (0, 3) to get b:

3 = (-3/2)*0 + b, so b = 3

Then y = (-3/2) x + 3

4 0

2 years ago

Find the domain of h(x)=x/x^2-x-6

Fynjy0 [20]

Answer:

∈

−

{

−

}

Explanation:

(

)

−

is defined for all Real values of

except those values for which

−

(

)

(

−

)

So if

−

XXXX

−

and

XXXX

(

)

is undefined

3 0

3 years ago

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