Mathematics High School

At a country concert, the ratio of number of boys to the number of girls is 2:7. If there are 250 more girls than boys, how many boys are at the concert?!

PLSSSSSSSS I NEED HELP ASAP PRETTY SURE THIS IS BEING GRADED!! GIVING BRAINLIEST AND 40 POINTS!!

Answers

Answer 1

Answer:

100 boys at the concert

Step-by-step explanation:

When changing the ratio between the number of boys to the number of girls, it always has to be equivalent to the original ratio 2:7

So, convert the ratio 2:7 to a different ratio, but it still has to be equivalent to the ratio 2:7. By doing that, multiply both sides of the 2:7 ratio by 50:

  2   :   7

×50   ×50

To get:

100:350  ⇒  This ratio means that the ratio between the number of boys to the number of girls is now 100:350, but that’s okay to have because it’s still equivalent to the original 2:7 ratio.

So, using the new ratio 100:350, this means that there are 100 boys at the concert and 350 girls at the concert, and 350 is 250 more than 100 which proves what the question is asking. So there are 100 boys at the concert.

Answer: 100 boys at the concert

I hope you understand and that this helps with your question! :)

Related Questions

A carpenter measures the diagonals of a piece of wood. In rectangle EFGH, EJ=26 in. Find FH.

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Answer:

36

Step-by-step explanation:

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You are in kindergarten!

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it would be C, D, and E. when there is no line marked under the less than or greater than sign, it’ll be open circle

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9/x = 25/100

cross multiple to get:

25x = 900

then divide to simply:

x=36

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Answer:

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Step-by-step explanation:

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Answer:

thanks

Step-by-step explanation:

A car is traveling at a steady speed. It travels 1 3/4 miles in 2 1/3 minutes. How far will it travel in ​? In 1 hour​?

Answers

Answer:

45 miles.

Step-by-step explanation:

Ok, so it goes 1.75 (1 3/4) miles in 2 minutes and 20 seconds, or 140 seconds. Divide 1.75 miles by 140 and you get 0.0125 miles per second, or 0.75 (3/4) miles per minute. Multiply 0.75 by 60 minutes and you get 45 miles.

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Answer:

v = 13

Step-by-step explanation:

Truly hope I helped fast enough:).

Evaluate f(x)=x-5 when x=-5,x=0,and x=5

Answers

Answer:

f(x) = x - 5

f(-5) = -5 - 5

= -10

f(0) = 0 - 5

= -5

f(5) = 5 - 5

= 5

Hope this helps!

The two pentagons shown are similar.
8 cm
879
879
9 cm
8 cm
16 cm
3 cm
6 cm
not drawn to scale
What is the value of x?
O A. 6 cm
B. 9 cm
ОО
C. 12 cm
D. 14 cm

Answers

The answer is D but correct me if I’m wrong

Pleaseeeee help me anyone !!!!!!!!!!!! Will mark Brianliest answer correctly

Answers

Answer:

x = 6√7

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Trigonometry

[Right Triangles Only] Pythagorean Theorem: a² + b² = c²

Step-by-step explanation:

Step 1: Define

We are given a right triangle. We can use PT to solve the missing length.

Step 2: Identify Variables

Leg a = √27

Leg b = 15

Hypotenuse c = x

Step 3: Solve for x

Substitute [PT]:                    (√27)² + 15² = x²Exponents:                          27 + 225 = x²Add:                                     252 = x²Isolate x:                              6√7 = xRewrite:                               x = 6√7

I CANT FIGURE THIS OUT!! WHATS 1+1! I WILL GIVE BRAINLIEST IF U KNOW THIS

Answers

OMG THIS IS SO DIFFICULT, BUT I THINK THE ANSWER IS 3

Please help!!

Use the given vectors to find the indicated quantities.
u =(5, - 2), v =(0, 1), w =(-1, -3)
(a) (u • v)w (b) 5u • V

Answers

Part (a)

Lets say we had the two general vectors

u = (a,b)

v = (c,d)

The dot product is

u dot v = a*c + b*d

-------------------

Apply that rule to these specific vectors

u = (5, -2)

v = (0, 1)

So we get

u dot v = 5*0 + (-2)*1

u dot v = 0 - 2

u dot v = -2

Therefore,

(u dot v)*w = -2*(-1, -3)

(u dot v)*w = ( -2*(-1), -2(-3) )

(u dot v)*w = (2, 6)

Answer:  (2, 6)

=============================================

Part (b)

u = (5, -2)

5u = 5*(5, -2)

5u = (5*5, 5*(-2))

5u = (25, -10)

5u dot v = (25, -10) dot (0,1)

5u dot v = 25*0 + (-10)*1

5u dot v = 0 - 10

5u dot v = -10

Answer: -10

PLEASE HELP FAST MAKE SURE YOU READ IT CORRECT I WILL GOVE BRAINLIST AND EXTRA POINTS PLEASE HELP!

Answers

Answer:

f(5) = 3

Step-by-step explanation:

f(x) is the y coordinate at x.

At x = 5, y = 3, so f(5) = 3.

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O step 2
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O step 8

Answers

Answer:

C

Step-by-step explanation:

Step 6

A store pays $70 for a kitchen table. The store marks up the price by 45% so they can make a profit.
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$

Answers

Answer:

$108.75

Step-by-step explanation:

math and stuff

ALERT NEED HELP PLEASE ASAP ​

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help me l,ll give you brainest

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Answer:

Step-by-step explanation:

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Answer:

the last three choices

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Answers

Answer:

9 power 3 minus 3

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Answer:

9^2

Step-by-step explanation:

Subtract the bottoms exponent from the top exponent. If you see no exponent there is always a one.

this is for the brainlist winner

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Answer:

C

Step-by-step explanation:

ǟռֆաɛʀ: C


´ռօ ɛxքʟǟɨռᏆɨօռ

What is the value of X I’ll give brainlist please someone help me

Answers

Answer:

69.333 or 208/3

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Answers

Answer:

I think its b

Step-by-step explanation:

A Family spent a total of $73.75 on movie tickets and snacks. Each ticket cost $12.50, and each snack cost $4.75. If the family bought a total of 9 tickets and snacks, How many of each did they buy?

Answers

Answer:

4 Tickets and 5 Snacks

Step-by-step explanation:

Answer:

The family bought 4 tickets and 5 snacks.

Step-by-step explanation:

$12.50 x 4 tickets = 50

$4.75 x 5 snacks = 23.75

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i need help i don’t understand what it means or what it is asking for

Answers

Answer:

its D btw

Step-by-step explanation:

(19) Calculate $ 328.67 as a percentage of $ 150
O
219%
O
209%
199%
189%​

Answers

Answer:

219%

Step-by-step explanation:

Answer:

219%

Step-by-step explanation:

Since $300 is double the price of $150, it is safe to say that it is over 200% which comes down to the first two answers 209% and 219%.  Divide $328.67 by $150 to get to the number which is around 2.19113333, multiply by 100 to get the answer.

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Answers

Answer:

-2g -10

Step-by-step explanation:

On simplifing this expression we get,

-2(g+5)

=> -2g + (-10)

=> -2g - 10

If my answer helped, kindly mark me as the brainliest!!

Thanks!!

Answer:

-2g-10

Step-by-step explanation:

-2(g+5)

Use the distributive property to simplify the equation

(-2*g)+(5*-2)

(-2g)+(-10)

-2g-10

Hope this helps. Have a nice day. May it be filled with joy ad happiness. Please, be safe and wash your hands. Happy Holidays.

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Answers

Answer:

may it is integer or mines relationship

Answer:

yes

Step-by-step explanation:

For the relation to be a function each value of x must map to exactly one unique value of y.

This is the case here thus the relation is a function

Anthony has 15 coins, all of which are quarters and dimes. In all, they're worth $3.60. How many of each kind of coin does Anthony have?

Answers

Answer:

1 Dime

14 Quarters

Step-by-step explanation:

d + q = 15

0.10d + 0.25q = 3.60

d = 15 - q

0.10d + 0.25q = 3.60

0.10(15 - q) + 0.25q = 3.60

1.5 - 0.10q + 0.25q = 3.60

0.15q = 3.60 - 1.5

0.15q = 2.1

0.15q/0.15 = 2.1/0.15

q = 14

d = 15 - q

d = 15 - 14

d = 1

!!!!!! ’ ... like Ik there is smart ppl around the world who knows these

Answers

Answer:

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Answers

Do you mean LCM

If you just want to know what is the least common multiple of 10 and 60, it is 60

Answer:

the lowest common factor is 5

Step-by-step explanation

5 can go into both 60 and 10, and thats the lowest that can go into both numbers because 5 times 2 is equal to 10 and 5 times 12 is equal to 60. hope this helps :)

Answer this plz I’ll mark brainliest:)

Answers

✨1. B 2.D try this I hope it helps!✨

Answer:

7.5

Step-by-step explanation:

7.5 is the smallest. 7.51 is bigger by 0.01, 7.501 is bigger by 0.001 and 7.5 with a dot on top means that the number 5 repeats itself indefinately after the comma so it is like if we wrote 7.55555555 and the 5 kept going on forever

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