MATHEMATICS HIGH SCHOOL

Complete the statement. –5 + = –5

A.5

B.–5

C.0

D.–1

Answers

Answer 1

Answer:

-5+ =-5

Replace the blank place by x

-5+x=-5

Simplify both sides of the equation

x-5=-5

Add 5 to both side sides

x-5+5=-5+5

x= 0

Answer : C

I hope that's help !

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Andre received $60 for his birthday and put it in his piggy bank. Each week, he puts 3 more dollars in his bank. The amount of money in dollars D in his bank is given by D = 3w + 60 where w is the number of weeks he has saved 3 dollars. His sister Lana makes a table of reasonable values for w. Lana selects 42 as a value for w. What is the corresponding table entry for D?(TEACHER HINT: They are asking what D will be if w is 42.)A.54 B.105 C.186 D. 402 I Don't Get Algebra At All ._.

The solution to 2 * 27 will be what kind of number?A. Prime
B. Odd
C. Perfect square
D. Even

Answers

Answer: Even

Step-by-step explanation:

The given product is $2*27$

When we solve the given product we get, $2*27=54$

Now, 54 is not a prime number since it has more than two factors such as 2 and 27.

[ ∵ A prime number is a whole number greater than 1 and it has only two factors which are 1 and itself. ]

It is even not odd since its last digit is an even number.

54 cannot be written as $n* n$ , for any natural number n, therefore, it is not a perfect square.

Answer: Hello mate!

Let's analyze the options:

A) prime, a prime number is a number that only can be divided by 1 and itself, if you look at the number 2*27, you can see that this number can be divided by 2 and 27, then this number is not prime.

B) An odd number has the form m= 2*n + 1 where n is an integer number.

in this case, we have 2*27, so this number is not odd.

C) perfect square, 2*27 = 54, we know that 7*7 = 49, and 8*8 = 65

so 2*27 lays in between two consecutive perfect squares, so 2*27 can not be a perfect square.

D) an even number has the form 2*n, where n is an integer.

n = 27 is this case, so 2*27 = 54 is an even number.

7kg of soybean oil which costs $4/kg was combined with 14kg of canola which costs $1/kg. Find the cost per kg of mixture.

Answers

(7*4 + 14*1)/(7+14) = 42/21 = $2/ kg of mixture;

From a point p on level ground, the angle of elevation of the top of a tree is 60°. If the tree is 39m high, how far is its base from p

Answers

Start by drawing a picture of the problem, to gain a better understanding of what you're dealing with,

In this case we will be using the function, cosine which is adjacent / hypotenuse

Cos(60) = x / 39

Simplify,

x = 39cos(60) which brings us to the solution of 19.5 meters.

7.2 x 12 x 0.23 = ? Round to the nearest hundredth.A. 19.88
B. 19.87
C. 19.44
D. 19.43

Answers

B. 19.87

The answer of the multiplication is 19.872. close to the nearest hundredth, it is 19.87. That is because the digit after 7 is 2 which is less than 5. had it been 5 or greater than 5, the answer would have been A. 19.88.

The answer is B. 7.2*12=86.4, 86.4*0.23=19.872.

How to solve this problem

Answers

Well given the fact that the available answers aren't completely solved out, I would say you only need to get rid of the power. Distribute it out to the 4 coefficient and the degrees. You should end up with answer B.

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