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ladessa [460]
1 year ago
6

Solve the system of equations using substitution y=7 y=2x-5

Mathematics
1 answer:
anzhelika [568]1 year ago
5 0

y= 7 (a)

y= 2x-5 (b)

Replace (a) on (b) ans solve for x:

7 = 2x-5

Add 5 to both sides of the equation:

7+5 = 2x -5 +5

12 = 2x

Divide both sides by 2

12/2 = 2x/2

6 = x

Solution:

x=6, y=7

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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

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3 years ago
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Alex17521 [72]
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How do you find the slope, I really need help.
STALIN [3.7K]

Answer:

-1/10

Step-by-step explanation:

its down 1 and right 10 so you know the slope is -1/10

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Write the natural numbers from 1 to 30. What fraction of them are prime numbers?​
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Answer:

The natural numbers from 1 to 30:

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The prime numbers are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29.

3 0
3 years ago
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