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3 years ago

This is for 20 points!!!!!!!

Mathematics

1 answer:

3241004551 [841]3 years ago

4 0

All really need to do is pick one number. so, we will go with 6 and 87.

6 times 12 is 72 then you subtract that from $87.

That would be 15

To double check, you can use another one. 9 and 123.

9 times 12 is 108. subtract that from 123 and you get 15.

Your answer is B) $15

Hope I helped :)

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How would you solve this? help.

Eddi Din [679]

Answer:

Center: (3,3)

Radius: $2\sqrt{5}$

Step-by-step explanation:

Midpoint and Distance Between two Points

Given two points A(x1,y1) and B(x2,y2), the midpoint M(xm,ym) between A and B has the following coordinates:

$\displaystyle x_m=\frac{x_1+x_2}{2}$

$\displaystyle y_m=\frac{y_1+y_2}{2}$

The distance between both points is given by:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Point (5,7) is the center of circle A, and point (1,-1) is the center of the circle B. Given both points belong to circle C, the center of C must be the midpoint from A to B:

$\displaystyle x_m=\frac{5+1}{2}=\frac{6}{2}=3$

$\displaystyle y_m=\frac{7-1}{2}=\frac{6}{2}=3$

Center of circle C: (3,3)

The radius of C is half the distance between A and B:

$d=\sqrt{(1-5)^2+(-1-7)^2}$

$d=\sqrt{16+64}=\sqrt{80}=\sqrt{16*5}=4\sqrt{5}$

The radius of C is d/2:

$r =4\sqrt{5}/2 = 2\sqrt{5}$

Center: (3,3)

Radius: $2\sqrt{5}$

8 0

2 years ago

Help me please for this question im heavily confused.

Ulleksa [173]

Answer:

Let x = number of candy bars sold

Let y = amount of money earned

y = 0.75x

He should work at the car wash.

Step-by-step explanation:

Let x = number of candy bars sold

Let y = amount of money earned

$42.75/57 = $0.75

Each candy bar costs $0.75

We can confirm that by dividing $38.25/51 = $0.75

1 candy bar sells for $0.75

2 candy bars sell for $0.75 * 2

x candy bars sell for 0.75 * x, or simply 0.75x

The equation is y = 0.75x

y = 0.75x

y = 0.75 * 36

y = 27

Larry raised $27 by selling candy bars last year. This year, he can earn more than that by working at the car wash.

He should work at the car wash.

8 0

2 years ago

Figure A maps to figure B with a scale factor of 4/9 What is the value of x?

FinnZ [79.3K]

Answer:1/2

Step-by-step explanation:

Given : Figure B is a scaled copy of Figure A.

We know that the scale factor is the ratio of the corresponding sides of two similar figures.

From , the graph we assume that that one point = one unit of length.

Then, the dimension of one side of figure A = 4 units and the dimension of corresponding side of Figure B = 2.

Then, the scale factor is given by 1/2

3 0

3 years ago

Read 2 more answers

Urgent:

rjkz [21]

Step-by-step explanation:

<h3>Given:</h3>

CM ⊥ AB
∠3 = ∠4

<h3>To prove: </h3>

△AMC ≅ △BMC

<h3>Solution:</h3>

∠ACM≅∠BCM - given

CM⊥AB - given, therefore

∠AMC = 90° and ∠BMC = 90°

Then

∠AMC ≅ ∠BMC

Side CM is common, therefore is congruent to itself

So we have congruent two angles and a side between them on triangles AMC and BMC:

△AMC ≅ △BMC as per ASA congruency theorem

5 0

2 years ago

A baseball manager has 11 players of the same ability. How many 9 player starting lineups can he

Lana71 [14]

Answer:

Step-by-step explanation:

Combination will be used here as teams are a group.

So using combination:

No. of combination of 'n' things taken 'r' at a time

$\limits^n {C} \,_r$ = $\frac{n!}{r! (n-r)!}$

here n = 11 ,

r = 9

11C9 = $\frac{11!}{9! (11-9)!}$ = $\frac{11!}{9! (2!)}$

11C9 = 55

Which are the possible 9 player starting lineups

4 0

3 years ago