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SIZIF [17.4K]
3 years ago
8

Four customers at a grocery store are buying apples. The table shows how many pounds of apples each customer bought and how much

each customer paid.
After the previous four customers, another customer, Timothy, spent $28.00 buying apples.
We can determine that Timothy bought ------------
of apples.
A: 11
B: 12
C: 14
D: 16

Mathematics
1 answer:
malfutka [58]3 years ago
4 0
Answer is C: 14

Explanation:
On the image added, the pounds of apples is half the cost. So if you would keep that same relationship and add $28.00 to one of the costs the outcome would be 14
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Dad is twice as old as Jon. Grand-Pa is seven years older than three times Jon's age. The sum of their age is 145 years. How old
Alenkasestr [34]

Step-by-step explanation:

let jon age be x

dad age is 2 of x i.e 2x

grandpa age is 7 + 3(x)

The sum of jon dad and grandpa age is 145 i.e

x + 2x + (7+3x) = 145

3x +. 7 + 3x = 145

6x = 145- 7

6x = 138

divide both sides by 6

x = 23

jon age is 23

while

grandpa age is

7 + 3(x)

7 + 3(23)

7 + 69

76.

3 0
3 years ago
Need it ASAP no rocky
Vinil7 [7]

Answer:

Value of x = 19.42 unit (Approx)

Step-by-step explanation:

Given:

Base = 6 unit

Angle θ = 72°

Find:

Value of x

Computation:

Cos θ = base / Hypotenuse

Cos 72° = 6 / x

0.3090 = 6 / x

x = 19.4174

Value of x = 19.42 unit (Approx)

7 0
3 years ago
3. Solve:
Leto [7]

Answer: A

Step-by-step explanation:

Take 2 equations that make one of their letters disappear, and add them up:

2x + y + z = 1

 x - y + 4z = 0

------------------------

3x + 5z = 1

Do the same with another 2 equations in which the letter, in this case y, can be removed. If you can't, take 2 of 3 equations and equal the value of the letter to make it eliminable.

x - y + 4z = 0

x + 2y - 2z = 3

Since we can't eliminate y, we have multiply as necessary to make it eliminable:

2 (x - y + 4z = 0)

= 2x - 2y + 8z = 0

add all up:

2x - 2y + 8z = 0

 x + 2y - 2z = 3

-----------------------------

3x + 6z = 3

Now we've gone from a 3-variable equation to a 2-variable equation.

3x + 5z = 1

3x + 6z = 3

We can solve again by elimination; to get rid of z, for example, we cross multiply. the upper equation by 6 and the lower equation by 5. However, we have to make one of them negative in order to make them eliminable.

6 (3x + 5z = 1)

-5 (3x + 6z = 3)

----------------------------

18x + 30z = 6

-15x - 30z = -15

---------------------------

3x = - 9

Solving for x;

x = \frac {-9}{3}

x = - 3

After finding one variable, we can use our 2-variable equations to find the next variable:

3x + 5z = 1

3 (-3) + 5z = 1

- 9 + 5z = 1

5z = 1 + 9

5z = 10

z = \frac{10}{5}

z = 2

Having found these 2 variables, we can put them into one of our main 3-variable equations to find the last one:

2x + y + z = 1

2(-3) + y + 2 = 1

- 6 + y + 2 = 1

y - 4 = 1

y = 1 + 4

y = 5

And you've found all the variables in the equation; to prove if they're correct or not, you can replace them in any of the main equations and the result should be equal to each other:

x + 2y - 2z = 3

-3 + 2(5) - 2(2) = 3

- 3 + 10 - 4 = 3

10 - 7 = 3

3 = 3

7 0
3 years ago
What is the slope-intercept form of this equation?<br> 3x + 9 y = 18
Taya2010 [7]
Y = -1/3x + 2

Explain: subtract 3x from 18, which will get you -3x + 18.
Next, get 9y and divide it by everything so it’ll look like 9y = -3x + 18
-——-————
9y
and you’ll get y = -1/3x + 2
Hope this helped
3 0
3 years ago
Find the area of the triangle with the given measurements.Round the solution to the nearest hundredth if necessary.A=50 degrees,
Shkiper50 [21]

Answer:

\large\boxed{A\approx213.71\ ft^2}

Step-by-step explanation:

Use the formula:

A=\dfrac{1}{2}bc\sin A

We have:

b=31\ ft,\ c=18\ ft,\ m\angle A=50^o\to\sin50^o\approx0.766

Substitute:

A=\dfrac{1}{2}(31)(18)(0.766)\approx213.71\ ft^2

8 0
4 years ago
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