All categories

4 years ago

Maria’s math test had 25 questions. She got 84% correct. How many problems did she get wrong

Mathematics

2 answers:

Fittoniya [83]4 years ago

5 0

Answer:

<h2>4 problems</h2>

Step-by-step explanation:

<h2>solution</h2><h2>100%_84%=16%</h2><h2>equate 100%=25 questions </h2><h2>therefore 16%=?</h2><h2>16%÷100%×25=4</h2><h2>=4</h2>

Agata [3.3K]4 years ago

3 0

Step-by-step explanation:

Total questions = 25

In 100% Maria got 84% correct

percentage that she got wrong = 100% - 84%

= 16%

Now

Problems that she got wrong = 16% of 25

= 16/100 * 25

= 0.16 *25

= 4

Therefore she got 4 questions wrong.

You might be interested in

Q(x)=2 −2+? please solve this huhu

Free_Kalibri [48]

Answer:

I mean it would just be q(x) = 0

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Find m∠U.<br> Write your answer as an integer or as a decimal rounded to the nearest tenth.

olga2289 [7]

Answer:

Answer:

50.2

Step-by-step explanation:

$ut = \sqrt{ {6}^{2} + {5}^{2} } \\ \sqrt{36 + 25} \\ \sqrt{61 } \\ using \: cosine \: rule \\ cos \: u = \frac{ {5}^{2} + 61 - 36 }{2 \times 5 \times \sqrt{61} } \\ \\ = \frac{25 + 61 - 36}{78} \\ \\ = \frac{50}{78 } \\ \cos \: u = 0.64 \\ m∠U. = 50.2$

7 0

2 years ago

If you help me i will love you

blagie [28]

You must first normalize this in order to use a Z-score table. To convert what you have into a Z score you must use this formula: (x- mean) /standard deviation. In your case (334-310)/12=2. So now you want the probability that a score is greater than 334, which in turn means you want P(Z>2)=1-P(Z<2)=1-.9772=0.0228=2.28%.

5 0

3 years ago

I need help.please

DedPeter [7]

Answer:

1. cos = adjacent / hypotenuse

tan = opposite / adjacent

sin = opposite / hypotenuse

2. cos = adjacent / hypotenuse

cos(G) = 429/821 = 0.5225 ≈ 0.523

tan = opposite / adjacent

tan(G) = 700/429 = 1.6317 ≈ 1.632

sin = opposite / hypotenuse

sin(G) = 700/821 = 0.8526 ≈ 0.853

3. Part A:

sin(G) = opp / hyp = 420/427 = 0.9836 ≈ 0.984

Part B:

tan(Z) = opp / adj = 77 / 420 = 0.1833 ≈ 0.183

Part C:

cos(Z) = adj / hyp = 420 / 427 = 0.9836 ≈ 0.984

Part D:

sin(M) = opp / hyp = 427 / 427 = 1

Part E:

The sine value of any right angle is 1. The opposite side to the right angle is the hypotenuse.

Explanation:

1. Use "SohCahToa" to remember the equations.

S = o/h C = a/h T = o/a

"o" for opposite; "h" for hypotenuse; "a" for adjacent

"S" is sine; "C" is cosine; "T" is tangent.

2. Use the formulas for sin, cos and tan. Substitute the numbers for each side into the equations.

Since the values depend on ∠G, ∠G determines which side is opposite or adjacent. The adjacent side touches ∠G but the opposite side does not. The hypotenuse is the longest side.

3. Use the sin, cos and tan formulas from question 1. Which side is called opposite or adjacent depends on which angle (G, Z or M).

5 0

4 years ago

Jake is buying a piece of recycled art from Luna. He started by giving her $50 and promised to pay her $5 a week until he pays t

garri49 [273]

Answer: $t = 50 + 5 w$

Step-by-step explanation:

Here w shows the number of weeks and t shows the total amount in w weeks.

Since, the initial amount he paid to her = $ 50

After that he paid $ 5 per week.

Thus, the total extra amount he paid = 5 w

⇒ The total amount he paid to her = 50 + 5 w

⇒ t = 50 + 5 w

Which is the required relation between the total amount paid(t) and the number of weeks (w) Jake will take to pay Luna.

6 0

4 years ago

Read 2 more answers