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yuradex [85]
4 years ago
6

Alejandra spent her birthday money on a video game that cost 24$,a controller for 13$,and a memory card for 16$ . The total tax

was 3$ . Write and solve a subtraction equation to find how much money Alejandra gave the cashier if she recived 4$ in change
Mathematics
1 answer:
natita [175]4 years ago
5 0

Answer: Alejandra gave $60 to the cashier.

Step-by-step explanation:

Hi, to answer this question we have to write an equation with the information given.

We have to subtract to the amount that Alejandra paid(x) the sum of the costs of each product [videogame (24), controller (13) and memory card (169] and the total tax (3). the expression must be equal to the amount received in change.

Mathematically speaking:

x -(24+13+16+3) = 4

Solving for x:

x - 56 =4

x = 4+56

x =60

Alejandra gave $60 to the cashier.

Feel free to ask for more if needed or if you did not understand something.

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algol13

Answer:

x=1

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4 0
3 years ago
Jordan was given the expression 2x2^-3 x 2^-5 How should he write the expression as a fraction? Describe the exponent rules Jord
mariarad [96]

Answer:

2*2^{-3} * 2^{-5} =\frac{1}{128}

Step-by-step explanation:

Given

2*2^{-3} * 2^{-5}

Required

Write as a fraction

To do this, Jordan has to apply the following rules

<u>Negative Exponent rule:</u>

a^{-m} = \frac{1}{a^m}

<u>So, the expression is:</u>

2*2^{-3} * 2^{-5} = \frac{2}{2^3 * 2^5}

<u>To solve further, we apply the product rule of exponent</u>

a^m * a^n = a^{m+n}

<u>So, the expression is:</u>

2*2^{-3} * 2^{-5} =\frac{2}{2^{3+5}}

2*2^{-3} * 2^{-5} =\frac{2}{2^8}

<u></u>

<u>Evaluate the exponents</u>

2*2^{-3} * 2^{-5} =\frac{2}{256}

<u>Divide the numerator and denominator by 2</u>

2*2^{-3} * 2^{-5} =\frac{2/2}{256/2}

2*2^{-3} * 2^{-5} =\frac{1}{128}

4 0
3 years ago
Mark bikes 4/10 of a mile in 1/5 of an hour. Find marks average speed in miles per hour.
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He bikes 4/10 of a mile in 1/5 of an hour

That is 4/10 miles in 1/5 hours

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6 0
3 years ago
Pleaseee help me with these i did some but just wanna make sure I'm in the same page if its right. please explain how you got it
Sergeeva-Olga [200]
1. P = 2(9) + 2(4.5)
P = 18 + 9
P = 27 m

2. P = 5.2(2) + 1.3(2)
P = 10.4 + 2.6
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3. P = 12.9(2) + 4.7(2)
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5 0
3 years ago
Suppose a ski jumper is 2,650 feet from the base of a ski jump and looks up to the top at an angle of elevation of 26 degrees. A
yuradex [85]
We can draw a right triangle to easily visualize the given problem. Since the ski jumper is 2650 ft from the base of the ski jump, we can consider this as one of the right triangle's legs. 

What we're looking for is the height of the ski jump or the other leg of the right triangle. Since the ski jumper looks up at an angle of elevation of 26°, we can use the tangent function to find the missing height. You may refer to the image below to better understand the problem. 

Recall that tanθ = (opposite side facing the angle)/(side adjacent to the angle). For this case, we have

\tan26= \frac{x}{2650}\\2650(\tan26) = x\\x \approx1292.49

Hence, the height of the ski jump (rounded off the nearest whole foot) is 1292 feet. 

Answer: 1292 feet

4 0
4 years ago
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