2 years ago

Can someone help me please!!!!

Mathematics

1 answer:

Softa [21]2 years ago

6 0

Answer:

step 1. DBE ~ ABC

step 2. (x + 5)/4 = (2x + x + 5)/(4 + 3)

step 3. ( x + 5)/4 = (3x + 5)/7

step 4. 7x + 35 = 12x + 20

step 5. 5x = 15

step 6. x = 3.

You might be interested in

What is the surface area?

frosja888 [35]

98cm^2 - bigger triangles are 28 each, bottom one is 14. (28 x 3) + 14=98

3 0

3 years ago

Worth 50 points!!! The equation A = r(<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7BC%7D%7B2%7D%20" id="TexFormula1" title=" \f

jasenka [17]

Times both sides by 2
2A=rC
divide both sides by r
$C= \frac{2A}{r}$

4 0

3 years ago

How do i find the value of x , i’m so confuseddd !

olasank [31]

Answer:

x ≈ 61.3

Step-by-step explanation:

Using the Sine rule, that is

$\frac{6}{sinx}$ = $\frac{5.8}{sin58}$ ( cross- multiply )

5.8 × sinx = 6 × sin58° ( divide both sides by 5.8 )

sin x = $\frac{6sin58}{5.8}$ ≈ 0.87729, thus

x = $sin^{-1}$ (0.87729) ≈ 61.3

5 0

3 years ago

−4x+7y+5= 0x−3y=−5<br><br>How many solutions does the system have?

seraphim [82]

{-4x+7y+5=-5
{0x-3y=-5 Solve the equation.

{-4x+7y+5=-5
{y=5/3 Substitute the value of y.

-4x+7(5/3)+5=-5 Plug in and solve.

x=65/12 You should get this answer.

Therefore: (x,y) = (65/12,5/3)

6 0

3 years ago

Please help i don’t know how to do this

laila [671]

Answer:

1.) 25

2.)81

3.)49

Step-by-step explanation:

(I recommend getting a Texas instruments TI-84 you can just plug in the numbers and it does it for you :)

4 0

3 years ago