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2 years ago

PLEASE PLEASE solve step by step !!!!!!! I will mark Brianliest correct answer !!!

Mathematics

1 answer:

gulaghasi [49]2 years ago

3 0

Answer:

m<3 = 70 and m<4 = 110

Step-by-step explanation:

<3 and <4 are vertical angles so they add up to 180

(3y + 7) + (5y + 5) = 180

(3y + 5y) + (7 + 5) = 180

8y + 12 = 180

-12 -12

8y = 168

/8 /8

y = 21

find the angle measures:

3(21) + 7

63 + 7

5(21) + 5

105 + 5

110

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A. 12 + 4x = 6x + 10 – 2x

GalinKa [24]

An equation has infinitely many solutions if it can be manipulated all the way to an identity (i.e. an equality where the right and left hand side are the same). We have:

A) $12+4x=6x+10-2x \iff 12+4x=10+4x \iff 12=10$

which is impossible

B) $5x+14-4x=23+x-9 \iff x+14 = x+14$

which is an equality

C) $x+9-0.8x=5.2x+17-8\iff 0.2x+9=5.2x+9 \iff 0.2x=5.2x\iff x=0$

which has a unique solution

D) $4x-2x=20 \iff 2x=20 \iff x=10$

which has a unique solution

3 0

3 years ago

Please Help! I got an answer, but I think it's wrong.

Ghella [55]

Answer:

I am pretty sure u got it right

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

There are a total of 84 students in a drama club and a yearbook club. The drama club has 16 more students than the yearbook club

vodomira [7]

Y = yearbook club
d = drama club

y + d = 84
d = y + 16

now we sub y + 16 in for d in the first equation
y + d = 84
y + (y + 16) = 84
2y + 16 = 84
2y = 84 - 16
2y = 68
y = 68/2
y = 34 <=== yearbook club students

d = y + 16
d = 34 + 16
d = 50 <=== drama club students

7 0

3 years ago

HELP ME ME THANKSssssssssssfijnwijpmcrifljc

DENIUS [597]

Answer:

The volume of the cylinder is 5, 024 cm cubed (the last option)

Step-by-step explanation:

$V=\pi r^{2} h\\V=3.14(8^{2} )(25)\\V=3.14(64)(25)\\V=200.96(25)\\V=5024$

7 0

3 years ago

<img src="https://tex.z-dn.net/?f=0%20%3D%20%20%20-%204.9t%20%7B%7D%5E%7B2%7D%20%20%2B%2027t%20%2B%202.4" id="TexFormula1" title

marta [7]

$0 = - 4.9t {}^{2} + 27t + 2.4$
Convert decimals to fractions

$0 = - \frac{49}{10} t {}^{2} + 27t + \frac{12}{5}$
Multiply both sides by 10

$0 = - 49t {}^{2} + 270t + 24$
Move expression to the left.

$0 + 49t {}^{2} - 270t - 24 = 0$
Remove zero.

$49t {}^{2} - 270t - 24 = 0$ Solve the quadratic equation.

$t = \frac{ - ( - 270) + - \sqrt{( - 270) {}^{2} - 4 \times 49 \times ( - 24) } }{2 \times 49}$
Remove parenthesis and calculate.

$t = \frac{270 + - \sqrt{72900 + 4704} }{98}$
Add the numbers

$t = \frac{270 + - 77604}{98}$
Separate the solutions

$t = \frac{270 + \sqrt{77604} }{98} \\ t = \frac{270 - \sqrt{77604} }{98}$
The final solution are
$t1 = \frac{270 - \sqrt{77604} }{98} , t2 = \frac{270 + \sqrt{77604} }{98}$

7 0

3 years ago