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Wittaler [7]
3 years ago
8

Karina is 15. Her brother, Hector, is less than half her age. Write an inequality about Hector's age​

Mathematics
1 answer:
Ugo [173]3 years ago
4 0

hector is 7 and a half

because  7 plus 7 is 14 buy 7.50 plus 7.50 is 15

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What is the greatest common factor of 30, 45, and 90?
weeeeeb [17]

Answer:

15

The factors of 30 are: 1, 2, 3, 5, 6, 10, 15, 30

The factors of 45 are: 1, 3, 5, 9, 15, 45

The factors of 90 are: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

Then the greatest common factor is 15.

3 0
3 years ago
A delivery service charges $2.50 for the first pound and $0.75 for each additional pound . If Carl paid $7.75 for his package, h
nekit [7.7K]
8 pounds
 2.50 - 7.75 = 5.25
5.35 divided by 0.75=7
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6 0
3 years ago
Find the missing values for the exponential function represented by the table below.
Finger [1]

Answer:

x     y

-2   7

-1    10.5

0    15.75

1     23.625

2    35.4375

Step-by-step explanation:

The general equation of the exponential function is y=ab^x.

We know from our table that when x=0, y=15.75. Let's replace those values in our equation:

y=ab^x

15.75=ab^0

Remember that b^0=1, so:

15.75=a(1)

15.75=a

a=15.75

We also know from our table that when x=-1, y=10.5. Let's replace the values again:

y=ab^x

10.5=ab^{-1}

But we now know that a=15.75, so let's replace that value as well:

10.5=15.75b^{-1}

Remember that b^{-1}=\frac{1}{b}, so:

10.5=\frac{15.75}{b}

10.5b=15.75

b=\frac{15.75}{10.5}

b=1.5

Now, we can put it all together to complete our exponential function:

y=ab^x

y=15.75(1.5)^x

To find the missing values, we just need to evaluate our function at x=1 and x=2:

- For x=1

y=15.75(1.5)^x

y=15.75(1.5)^1

y=23.625

- For x=2

y=15.75(1.5)^x

y=15.75(1.5)^2

y=35.4375

3 0
4 years ago
3x+7y=105 represents the number of bags of sand x and bags of mulch y that can be bought with 105. If no bags of sand are brough
Virty [35]
So since x= sand bags replace x with 0 so 7y=105 is left divide by 7 and you get y=15 so 15 bags
7 0
4 years ago
Guadalupe wants to buy new goggles that cost $31.50. She has $4.50 and plans to save $2.25 each week. How many weeks will it tak
gregori [183]
y=2.25x+4.5\\(31.5)=2.25x+4.5\\2.25x=27\\x=12

12 weeks.
5 0
3 years ago
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