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liraira [26]
3 years ago
9

Show your work to find X

Mathematics
1 answer:
Kamila [148]3 years ago
3 0

Answer:

x = 20

Step-by-step explanation:

(2 + 3x) and 62° are vertically opposite angles and are congruent, so

3x + 2 = 62  ( subtract 2 from both sides )

3x = 60 ( divide both sides by 3 )

x = 20

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What is the solution set for 2x + 2 = 6, given the replacement set {1, 2, 3, 4}?
leva [86]
2x+2=6
2x=4
x=2

Hope this helps :)
7 0
3 years ago
Read 2 more answers
Un radar de l'armée américaine réussit à détecter tout ce qui se trouve à un rayon représenté
WARRIOR [948]

Répondre:

r <27

Explication étape par étape:

Compte tenu de l'inégalité 5r + 9> 10r - 126

Nous devons trouver l'ensemble de solutions

5r + 9> 10r - 126

Ajouter 126 des deux côtés

5r + 9 + 126> 10r - 126 + 126

5r + 135> 10r

5r-10r> -135

-5r> -135

Divisez les deux côtés par -5 (notez que le signe changera)

-5r / -6 <-135 / -5

r <27

Par conséquent, les ensembles de solutions sont des valeurs inférieures à 27

8 0
3 years ago
What are the coordinates of the x-intercepts of the parabola y = x² - 8x + 15?
tamaranim1 [39]

Answer:

(3, 0) and (5, 0)

Step-by-step explanation:

we have

y=x^{2}-8x+15

we know that

The x-intercepts are the values of x when the value of y is equal to zero

so

For y=0

x^{2}-8x+15=0

The formula to solve a quadratic equation of the form

ax^{2} +bx+c=0

is equal to

x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}

in this problem we have

x^{2}-8x+15=0  

so

a=1\\b=-8\\c=15

substitute in the formula

x=\frac{-(-8)\pm\sqrt{-8^{2}-4(1)(15)}} {2(1)}

x=\frac{8\pm\sqrt{4}} {2}

x=\frac{8\pm2} {2}

x=\frac{8+2} {2}=5

x=\frac{8-2} {2}=3

so

x=3, x=5

therefore

The x-intercepts are (3,0) and (5,0)

4 0
3 years ago
Help please giving brainliest
rewona [7]

Answer:

A: 28 cm

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
How many solutions does the equation 4x + 8 = −2 − 2 + 5x have? (5 points) Two One None Infinitely many
djverab [1.8K]

Answer:

just one solution

Step-by-step explanation:

4x + 8 = −2 − 2 + 5x

4x - 5x = -2 - 2 - 8

x = 12

6 0
3 years ago
Read 2 more answers
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