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3 years ago

Experts/ace/trusted helpers/geniuses helpp mee plz

Mathematics

2 answers:

maria [59]3 years ago

8 0

inside angles need to equal 180

180-75-40 = 65

now the question mark and 65 need to equal 180

180-65 = 115

answer is 115

sertanlavr [38]3 years ago

4 0

The angles of a triangle must add to 180. We know 2 of the angles, so by subtracting them both from 180 we can find the remaining angle.

180 - 75 - 40 = 65

The 65 degree angle and the angle we are looking for are supplementary angles. This means they add to 180.

180 - 65 = 115

The answer is 115.

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Simultaneous Equations <br> 2x+4y=22 <br> 2x+2y=15

Aleks04 [339]

Answer:

x = 4

y = $\frac{7}{2}$

Step-by-step explanation:

Ummmm

I'm not sure if this is corrrect but this is what I got

So first you solve 2x+4y=22 to find x

and you get x = $-2y+11$

Then you have to subtitute $-2y+11$ for $x$ in $2x+2y=15$

which you then get y= $\frac{7}{2}$

After you have to subttitute y= $\frac{7}{2}$ for y in x = $-2y+11$

which you get as x=4

Finally you get the answer as:

x = 4

y = $\frac{7}{2}$

5 0

3 years ago

Find (ƒ-g)(x) ƒ(x) = x + 6, g(x) = x - 6

timurjin [86]

=(f-g)(x)
=f(x)-g(x)
=x+6-(x-6)
=x+6-x+6
=12

6 0

3 years ago

you have 120 red beads, loo white beads, and 45 blue beads. you want to use all the beads to make a bracelet that has red, white

kvv77 [185]

Answer:

24 bracelets can be made from given beads.

● Explanation -To make similar bracelets using all the beads, we have to find the highest common factor of no of beads.Now, Factors of 72 => 1, 2, 3, 4, 6, 8 , 9, 12, 18, 24, 36, 72Factors of 192 => 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 192Factors of 120 => 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120HCF => 24Observing this data, HCF of 72, 192 & 120 will be 24.Therefore, total 24 bracelets can be made from given beads.* Each bracelet will have 3 red, 8 blue and 5 white beads.

5 0

2 years ago

The zurassic zoo charges $11 each for adult admissions and $4 each for each child. The total bill for the 138 people from a scho

LenaWriter [7]

The number of adults = 41

The number of children = 97

Step-by-step explanation:

Let x be the number of adults and

y be the number of children

then according to the given conditions

$x+y = 138\ \ \ Eqn\ 1\\11x+4y = 839\ \ \ Eqn\ 2$

From equation 1:

x = 138-y

Putting in equation 2

$11(138-y)+4y = 839\\1518-11y+4y = 839\\1518 -7y = 839\\-7y = 839-1518\\-7y = -679\\$

Dividing both sides by -7

$\frac{-7y}{-7} = \frac{-679}{-7}\\y = 97$

Putting y = 97 in equation 1

$x+ 97 = 138\\x = 138-97\\x = 41$

Hence,

The number of adults = 41

The number of children = 97

Keywords: Linear equations variables

Learn more about linear equations at:

#LearnwithBrainly

4 0

3 years ago

Help..

Serjik [45]

The answer is three its easy

8 0

3 years ago