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3 years ago

#11 Please answer the question

Mathematics

1 answer:

tatuchka [14]3 years ago

4 0

Answer:

134

Step-by-step explanation:

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Triangle ABC is similar to triangle FED, find the measure of x. A. X = 9 B. X = 11 C. X = 110 D. X = 231

just olya [345]

Answer:

$A+B+C=130$

$F+E+D=273$

Step-by-step explanation:

From the question we are told that:

Dimension of ABC

A=9

B=11

C=110

Dimension of FED

D=231

Generally the equation for the similar triangles is mathematically given by

$\frac{A}{F}=\frac{B}{E}=\frac{C}{D}$

Therefore solving for F

$\frac{9}{F}=\frac{110}{231}$

$F=\frac{9*231}{110}$

$F=18.9$

Therefore solving for E

$\frac{11}{E}=\frac{110}{231}$

$E=\frac{11*231}{110}$

$E=23.1$

Measure of $\triangle ABC$

$A+B+C=130$

Measure of $\triangle FED$

$F+E+D=273$

5 0

3 years ago

Simplify the expression. State any excluded values.<br><br> x^ 2 - 36/42x - 7x^ 2

REY [17]

Consider the expression $x^2-\dfrac{36}{42}x-7x^2.$

This expression contains two terms with $x^2,$ group them:

$x^2-7x^2=x^2(1-7)=-6x^2.$

Now simplify term $\dfrac{36}{42}x=\dfrac{6}{7}x.$

Now $x^2-\dfrac{36}{42}x-7x^2=-6x^2-\dfrac{6}{7}x=6\left(-x^2-\dfrac{1}{7}x\right)=-6x\left(x-\dfrac{1}{7}\right).$

This expression is defined for all x.

3 0

4 years ago

-5 ( p + 3/5) = -4 <br><br> topic is solving 2 step equations

lesya692 [45]

Answer:

1/5

Step-by-step explanation:

5 0

3 years ago

13 ? start fraction, 13, divided by, 10, end fraction of a number is what percentage of that number?

zubka84 [21]

Answer:

The percentage is $130\%$

Step-by-step explanation:

Let

x-----> the number

we have

$\frac{13}{10}x=1.3x$

To find the percentage multiply by 100

$1.3*100=130\%$

7 0

3 years ago

I am not sure if this is right can someone check it ASAP please

NikAS [45]

Answer:

x=10

Step-by-step explanation:

3(4x-12) = 84

Divide each side by 3

3/3(4x-12) = 84/3

4x-12 =28

Add 12 to each side

4x-12+12 = 28+12

4x= 40

Divide each side by 4

4x/4 = 40/4

x = 10

6 0

3 years ago