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Ede4ka [16]
3 years ago
8

have 22 more questions and need help will give brainliest to the correct answer and plz explain how u got that answer

Mathematics
1 answer:
yarga [219]3 years ago
3 0
The final answer is A, or 1.25. If you'd like to see the steps, then read below.

First, plug in all of the known information. 2(18) + 2(1.5) + x = 10 + 30.25.
You get this equation because only one ticket costs 18 dollars so you multiply 18 by 2. Same thing with the ice cream. Using x as a variable for the soda since it is the unknown value. The total cost for Amy was 10 dollars and the total cost for Mike was 30.25 dollars. First, simplifying the parentheses using the order of pemdas, 2(18) = 36. 2 x 1.5 = 3. The equation now simplifies down to
36 + 3 + x = 10 + 30.25. Now adding together 36 and 3 you get
39 + x = 10 + 30.25. Now finally adding together 10 and 30.25, the total cost is 40.25. The equation now simplifying down to 39 + x = 40.25, the final step is to subtract 39 from 40.25 to isolate x. 40.25 - 39 = 1.25.
The soda costs 1.25 dollars.
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In one school, a half of all students who like math like science as well. Also, in that school, a third of all students who like
kifflom [539]
2:3 ratio 
math:science
6 0
2 years ago
How many ways can a committee chairman choose 4 people for a subcommittee if there are 12 members on the whole committee?
Marina86 [1]
A group of k elements can be chosen from a group of n elements in \frac{n!}{k!(n-k)!} ways.

(^{12} _4)=\frac{12!}{4!(12-4)!}=\frac{12!}{4! \times 8!}=\frac{8! \times 9 \times 10 \times 11 \times 12}{2 \times 3 \times 4 \times 8!}=\frac{9 \times 10 \times 11 \times 12}{2 \times 3 \times 4}= \\ \\
=3 \times 5 \times 11 \times 3=495

The answer is B. 495.
7 0
2 years ago
Suppose that a travel bureau claims that the trees in a forest are 83 feet tall on average, With a standard deviation of 2 feet
valentinak56 [21]

Answer:

Step-by-step explanation:

Given mean = 84,

Standard deviation = 2,

Sample 64,  

95% confidence interval: z = 1.96

Applying empirical rule , means that 95% of data fall within two standard deviations.

ME =  = 0.49

Rounding this to 0.5

CI =  83.5< mean < 84.5

Outside of this range=  x ≤ 83.5  and ≥  84.5

6 0
2 years ago
Help with this question, please!
Katyanochek1 [597]

The diet will include <u>123.75 </u>daily grams of protein

<h3>Further explanation</h3>

One variable linear equation is an equation that has a variable and the exponent number is one.  

Can be stated in the form:  

\large{\boxed{\bold{ax=b}}

or  

ax + b = c, where a, b, and c are constants, x is a variable  

We complete the task :

A nutritionist planning a diet for a football player wants him to consume 3,500 Calories and 725 grams of food daily. Calories from fat and protein will be 45% of the total Calories. There are 4, 4, and 9 Calories per gram for protein, carbohydrates, and fat, respectively. How many daily grams of protein will the diet include?

  • 243.75
  • 481.25
  • 123.75
  • 120

Calories from fat and protein will be 45% (0.45) of the total Calories

Calories from fat and protein = 0.45 x 3500 = 1575 calories

Calories from carbohydrates = 3500 - 1575 = 1925 calories

So mass for carbohydrates = 1925 : 4(4 calories/gram) = 481.25 grams

Then mass for fat and protein = 725 - 481.25 = 243.75 grams

We can make equation for fat and protein

1. 4 calories. mass of protein(p) + 9 calories . mass of fat(f) = 1575 calories

2. mass of protein(p) + mass of fat(f) = 243.75

we can simplify :

1. 4p+9f = 1575

2. p + f = 243.75 ⇒ f = 243.75 - p

we substitute equation 2 into equation 1 :

4p + 9(243.75-p) = 1575

4p + 2193.75-9p=1575

-5p = -618.75

p = 123.75

<h3>Learn more</h3>

linear equation

brainly.com/question/99841

Keywords : one variable, linear equation ,diet, nutritionist,calories, fat, proteins, carbohydrates, daily grams

#LearnWithBrainly

6 0
3 years ago
Directions: Name all sets to which each value belongs.
natta225 [31]

Answer:

Idk

Step-by-step explanation:

8 0
3 years ago
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