A science club is made up of 18 girls and 12 boys. Four of the girls and 5 of the boys are also in the Spanish club.

Mathematics

1 answer:

Alla [95]2 years ago

4 0

Answer:

Step-by-step explanation:

Add 18+12=20

20-(5+4)=11

Make 11 into a fraction over 100. Then take your numerator and that is your percent. Make sure your percentage is behind the decimal.

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Pls help me now hurry

arlik [135]

Answer:

i believe it means c. middle

Step-by-step explanation:

tell me if this is wrong

7 0

2 years ago

For a school fundraiser students are selling snack bags and candy bars to raise money on Wednesday the students or 23 snack bags

meriva

Answer:

$1.75

Step-by-step explanation:

The selling for each candy bar may be determined by a set of linear equations. This pair of linear equations may be solved simultaneously by using the elimination method. This will involve ensuring that the coefficient of one of the unknown variables is the same in both equations.

It may be solved by substitution in that one of the variable is made the subject of the equation and the result is substituted into the second equation .

Let the cost of a snack bag be s and that of a candy bar be c, then if on Wednesday the students or 23 snack bags and 36 candy bars that raised $114.75 on Thursday the seventh so 37 snack bags and 36 candy bars that raised $146.25

23s + 36c = 114.75

37s + 36c = 146.25

14s = 31.5

s = $2.25

23(2.25) + 36c = 114.75

36c = 114.75 - 51.75

36c = 63

c = 63/36

= $1.75

3 0

3 years ago

PLEASE HELPP I AM FAILING AND I NEED THIS ASAP!!! TYSM

Lana71 [14]

Answer:

See below for answers

Step-by-step explanation:

Do you mean $f(x)=2sin(x-1)$ or $f(x)=2sin(x) -1$ ?

Use the formula $f(x)=asin(bx+c)+d$ where $|a|$ is the amplitude, $-\frac{c}{b}$ is the phase shift, $d$ is the vertical shift, and the period is $\frac{2\pi}{|b|}$ .

Assuming your first case is true, the amplitude would be $|a|=|2|=2$ , your period is $\frac{2\pi}{|1|}=2\pi$ , and your midline/vertical shift is $d=0$ .