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3 years ago

The triangles are similar. What is the value of x?

Mathematics

1 answer:

Mashcka [7]3 years ago

8 0

Answer:

x=4

Step-by-step explanation:

First of all, the sides of the smaller triangle are multiplied by 5 to make it bigger. So, multiply 4 by 5 which gives you 20. So, 20= 3x+8.

Now that we have our equation, we need to isolate the variable.

Subtract 8 from both sides.

20= 3x+8

- 8 -8

Divide both sides by 3.

12= 3x

3 3

x= 4

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Determine the solution to the system of equations below. x - 3y = 1 3x-5y = 11

andrew11 [14]

Answer:

(x,y)=(7,2)

Step-by-step explanation:

5 0

3 years ago

Someone help me determine whether the statement is true or false

enyata [817]

Answer:

The Statement D⊆B is False.

Step-by-step explanation:

Given:

A = {1, 3, 5, 7 }

B = {5, 6, 7, 8}

C = {5, 8}

D = {2, 5, 8}

U = {1, 2, 3, 4, 5, 6, 7, 8}

To Check:

D⊆B = True or False

Solution:

The sign '⊆' symbolize SUBSET

So D⊆B means D is the Sub Set of B

That means All the element of Set D must be there in the SET of B Then it comes True.

Or else it is False

D = {2, 5, 8}

B = {5, 6, 7, 8}

Therefore D⊆B is a FALSE statement

For it to be TRUE we must have set B as

D = {2, 5, 8}

B = {2,5, 6, 7, 8}

Now D⊆B is a TRUE statement

4 0

4 years ago

Can someone explain what I did wrong? I’m very confused

Free_Kalibri [48]

You didn't put your label and also the answer would be 299 36+36+68+68+91=299

7 0

3 years ago

the taco truck sells tacos for $3 and burritos for $4. the number of items sold on a tuesday is 125 with a total income of $430.

butalik [34]

Answer:

Step-by-step explanation:

Hi, to answer this question we have to write a system of equations:

3 T + 4 B =425

T + B = 125

Where T is the number of tacos sold, and B is the number of burritos sold.

Multiplying the second equation by 3, and subtracting it to the first equation:

3 T + 4 B =425

3T + 3B = 375

___________

B =50

Replacing B in any equation:

T + B = 125

T +50 =125

T =125-50

T = 75

Feel free to ask for more if needed or if you did not understand something.

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3 years ago

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lara31 [8.8K]

We are given the functions $y= x^{2}$ and $y= -x^{2}$ .

let's consider some pairs in the graph of both functions.

in $y= x^{2}$ we have (-2, 4), (2, 4), (3, 9), (-5, 25)

in $y=- x^{2}$ we have (-2, -4), (2, -4), (3, -9), (-5, -25)

so for the same values of x, we have y's of equal value, but different sign.

This means that the functions are the reflections of each other with respect to the x-axis.

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5 0

4 years ago