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kiruha [24]
1 year ago
7

Cathy is three times as old as Katie, but in six years, Cathy will be

Mathematics
1 answer:
PIT_PIT [208]1 year ago
7 0

Answer:

Cathy is 18 Katie is 6

Step-by-step explanation:

mhm

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An animal shelter spends 5.50 per day to care for each bird and 8.50 per Day to care for each cat and a notice that the shelter
Deffense [45]

Answer:

19 birds

Step-by-step explanation:

First, I wrote my two equations:

5.5x +8.5y = 291.5

x + y = 41

Next, I got the variable y by itself in the second equation. Subtract x to get y = -x + 41. Then, I substituted what y equaled into the first equation. It should look like this: 5.5x + 8.5(-x+41) = 291.5. Distribute 8.5 to get 5.5x -8.5x + 348.5 = 291.5. Subtract 5.5x and 8.5x to get -3x. It should look like this: -3x + 348.5= 291.5. Subtract 348.5 from 291.5 to get -57. Now, you should have -3x = -57. Divide -3 from both sides, to get x = 19. So, there are 19 birds. If you want to go even further, 41-19= 22, which means there are 22 cats. Hope this helped!

6 0
3 years ago
ASAP!!! PLEASE help me solve this question!!!! I really need help...
GenaCL600 [577]

Answer:

304(pi) g

Step-by-step explanation:

First we find the volume of the hollow ball. Then we find the mass using the volume and density.

Let R = exterior radius = 3 cm

Let r = interior radius = 2 cm

volume = exterior volume - interior volume

volume = (4/3)(pi)R^3 - (4/3)(pi)r^3

volume = (4/3)(pi)(R^3 - r^3)

volume = (4/3)(pi)(3^3 - 2^3) cm^3

volume = (4/3)(pi)(27 - 8) cm^3

volume = (76/3)pi cm^3

Now we use the density and the volume to find the mass.

density = mass/volume

mass = density * volume

mass = 12 g/cm^3 * (76/3)pi cm^3

mass = 304(pi) g

Answer: 304(pi) g

6 0
3 years ago
Read 2 more answers
0,0<br>6,1<br>12,2<br>18,3<br>y=_____ <br>what is y? ​
Katarina [22]
It’s an incomplete question, but if the chart goes on with the same pattern, then use my chart to find the blank space, or Y.
24,4
30,5
36,6
42,7
48,8
54,9
60,10
66,11
72,12

Hope this helps!
4 0
2 years ago
Find the product.
scoray [572]

Answer: 112-15i

Step-by-step explanation:

(7)(8)+(7)(7i)+(-8i)(8)+(-8i)(7i)

56+49i-64i(-56(-1))

56+49i-64i+56

112-15i

6 0
3 years ago
Read 2 more answers
Anna bought a sweater at 40% off the original price. If she paid $12, what was the original price of the sweater?
Snezhnost [94]

Answer:

The original cost was 20 dollars.

Step-by-step explanation:

$12 represents 60% of the original price.

Set up a proportion

  • 60/100 = 12
  • 100% = x

Cross multiply Reduce 100/100 to 1

60/100 * x = 12 * 100/100

Multiply by 100

60/ 100 * x = 12

Divide by 60

60x = 12*100

60x = 1200                                      

60x/60 = 1200/60

x = 20 dollars.

3 0
3 years ago
Read 2 more answers
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