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olga nikolaevna [1]
2 years ago
12

Alyssa took a math test with 20 questions and she answered 16 questions correctly. In order get an A she needs to answer at leas

t 90 percent of the questions correctly
Mathematics
1 answer:
Tatiana [17]2 years ago
5 0

Answer:

she got 80% . in order to get 90% she would have had to get 18 questions right

Step-by-step explanation:

20=100%

2=10%

2×9=90%

18=90%

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A 1200 gram sample of radioactive matter will completely decay (be undetectable) in 10 hours. There exists a set of ordered pair
julia-pushkina [17]

Using it's concept, the range of the function is given as follows:

0 ≤ m ≤ 1200.

<h3>What is the range of a function?</h3>

The range of a function is the set that contains all possible output values for the function.

For this problem, we have to consider these two bullet points next, considering the mass is the output value of the function.

  • The smallest possible mass for the substance is of 0 grams, as after the substance decays to 0 grams, it will not assume a negative value, it will just disappear.
  • The greatest possible mass for the substance is the initial mass of 1200 grams, as the substance does not adquire mass with time, it just loses it.

Considering these masses, the range of the function is given as follows:

0 ≤ m ≤ 1200.

More can be learned about the range of a function at brainly.com/question/10197594

#SPJ1

3 0
11 months ago
Help me on this please
Rina8888 [55]

Answer:

x = 3.5

Step-by-step explanation:

Triangle to the right:

4^2 + x^2 = 8^2

16 + x^2 = 64

y^2 = 48

Triangle to the left:

x^2 + 6^2 = 48

x^2 + 36 = 48

x^2 = 12

x = sqrt(12)

x = 3.5

4 0
2 years ago
Buffalo Bill's Tacos charges $5.60 for sides and a drink, and then $0.40 per taco. The Crispy Taco charges $10 for sides and a d
vovangra [49]

Answer:

$5

Step-by-step explanation:

subtract

8 0
2 years ago
Plz give me explanation how to solve
skelet666 [1.2K]
120 people who all need 1 drink, so if each drink needs .5 cups of concentrate you will do 120d × 0.5 = 60 total cups of concentrate. if you then set up a fraction, you could cross multiply to get the answer, but I cant do fractions here so I'll say this: if every 5 cups of concentrate gives 19 cups of water, then you divide 60 cups by 5 cups to see how many "batches" of this recipie you will need, you get 12 batches, so 12 x 19 (cups of water per batch) to get 218 ( I think, check my math with a calculator
4 0
3 years ago
what is the algebraic expression for the following word phrase: the quotient of 6 and the sum of x+y?
Gemiola [76]
I think the answer is

6 ÷ (x+y) =


6 0
3 years ago
Read 2 more answers
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