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2 years ago

30 is 120 percent of what number

Mathematics

1 answer:

12345 [234]2 years ago

6 0

Answer: The answer is 25

25*1.2=30

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PLZ HELP I DONT UNDERSTAND A password for a security system must consist of a eater followed by two digits. How many possible pa

Talja [164]

Answer:

7020

Step-by-step explanation:

The letter could be any 1 of the 26 and it could be placed in any 1 of 3 places so this makes 26*3 = 78 possibilities.

For each of these there is any one of permutations of 2 digits from 10

= 10P2 = 10! / 8! = 10*9 = 90.

So the answer is 78 * 90 = 7020.

Note I am assuming that the 2 digits picked are different - no duplicates.

please mark me brainliest!

4 0

3 years ago

The first two angles in a triangle are 90 degrees and 50 degrees. What does the third angle have to be?

s2008m [1.1K]

Answer:

B) 40 degrees

Step-by-step explanation:

90 + 50 = 140

Each triangle have 180 °

180 - 140 = 40

5 0

3 years ago

Pls help What is the range of the function graphed above?!!!!

Flura [38]

I think it’s -infinity

5 0

3 years ago

Parker is testing 2 different types of ant killer in his yard. He purchases Brand A and Brand B from the home improvement store.

NNADVOKAT [17]

Answer:

He did not wait as long between each treatment of ant killer.

Step-by-step explanation:

He did one on monday and another on saturday then checked them on sunday

8 0

3 years ago

Chelsea and Ming are selling pies for a school fundraiser. Customers can buy blueberry pies and lemon pies. Chelsea sold 7 blueb

riadik2000 [5.3K]

Answer:

The cost of 1 blueberry is $7

The cost of 1 lemon pie is $17

Step-by-step explanation:

Given as :

The number of blueberry sold by Chelsea = 7

The number of lemon pie sold by Chelsea = 10

The number of blueberry sold by Ming = 5

The number of lemon pie sold by Ming = 1

The total selling amount of Chelsea = $219

The total selling amount of Ming = $52

Let The cost of 1 blueberry = b

And The cost of 1 lemon pie = l

Now, According to question

For Chelsea

7 b + 10 l = $219 ..................1

For Ming

5 b + 1 l = $52 .................2

Solving both equations

10×(5 b + 1 l ) - (7 b + 10 l) = 10×52 - 219

Or, 50 b + 10 l - 7 b - 10 l = 520 - 219

Or, (50 b - 7 b) + (10 l - 10 l) = 301

Or, 50 b - 7 b+ 0 = 301

Or, 43 b = 301

∴ b = $\frac{301}{43}$

I.e b = $7

So, The cost of 1 blueberry = b = $7

Put the value of b in eq 2

So, 5 × 7 + 1 l = $52

or, 35 + l = $ 52

Or, l = 52 - 35

∴ l = $17

So, The cost of 1 lemon pie = l = $17

Hence The cost of 1 blueberry is $7

And The cost of 1 lemon pie is $17 Answer

4 0

3 years ago