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olga nikolaevna [1]

3 years ago

15

Grace wants to buy a portable music player for $150 dollars. Her weekly allowance is $15. If she saves $10 each week toward the

cost of the portable music player, how many weeks will it take Grace to save enough to buy it?

1 answer:

Law Incorporation [45]3 years ago

4 0

Answer:

The answer is 15 weeks.

Step-by-step explanation:

Hope that helps. :)

Pls mark me a Brainliest

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Write an equation in slope-intercept <br> A slope of 0 and passes through (0,-3)

Finger [1]

If the line has a slope = 0, then it's a horizontal line

with the equation y = constant.

The line passes through (0, -3) → y= -3

<h3>Answer: y = -3</h3>

6 0

3 years ago

When sizes of pizzas are quoted in inches, the number quoted is the diameter of the pizza. A restaurant advertises an 8-inch “pe

mariarad [96]

Answer:

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Step-by-step explanation:

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8 0

2 years ago

1.Arsenic-74 is used to locate brain tumors. It has a half-life of 17.5 days. 90 mg wereused in a procedure. Write an equation t

Sophie [7]

$1)\text{ }N_t\text{ = 90\lparen}\frac{1}{2})^{\frac{t}{17.5}}$

2) 5.625 mg will be left

Explanation:

1) Half-life = 17.5 days

initial amount of Arsenic-74 = 90 mg

To get the equation, we will use the equation of half-life:

$\begin{gathered} N_t\text{ = N}_0(\frac{1}{2})^{\frac{t}{t_{\frac{1}{2}}}} \\ where\text{ N}_t\text{ = amount remaining} \\ N_0\text{ = initial amount} \\ t_{\frac{1}{2}\text{ }}\text{ = half-life} \end{gathered}$ $N_t\text{ = 90\lparen}\frac{1}{2})^{\frac{t}{17.5}}$

2) we need to find the remaining amount of Arsenic-74 after 70 days

t = 70

$\begin{gathered} N_t=\text{ 90\lparen}\frac{1}{2})^{\frac{70}{17.5}} \\ N_t\text{ = 5.625 mg} \end{gathered}$

So after 70 days, 5.625 mg will be left

4 0

1 year ago

Pls help I need a good grade

aleksley [76]

Answer:

f= -14

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Line t passes through points (10, 4) and (7, 9). Line u is parallel to line t. What is the slope of line u?

Margarita [4]

Answer: 3/5

Step-by-step explanation:

concept to know: the slope of perpendicular line is always opposite reciprocal

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

Step 1. Find the slope of line t

(y2-y1)/(x2-x1)

=(4-9)/(10-7)

=-5/3

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

Step 2. Apply the concept

Opposite reciprocal of (-5/3)=3/5

Hope this helps!! :)

Please let me know if you have any question

7 0

3 years ago