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Goshia [24]
2 years ago
14

The ratio of boys to girls is exactly the same in classes 701 and 702. Class 701 has 12 boys and 18 girls.

Mathematics
2 answers:
Mariana [72]2 years ago
8 0

Answer:

15 girls

Step-by-step explanation:

Juliette [100K]2 years ago
4 0

Answer:

20 girls i think is the answer

Step-by-step explanation:

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Ali, Carrie and Bryan received a sum of money. Bryan's money was 3/5 as much as Ali's money. The ratio of Ali's money to Carrie'
monitta

Answer:

The sum of money received by Ali, Carrie and Bryan is $ 740.

Step-by-step explanation:

At first we translate mathematically each sentence:

(i) <em>Ali, Carrie and Bryan received a sum of money. </em>

a - Ali's money.

b - Bryan's money.

c - Carrie's money.

(ii) <em>Bryan's money was </em>\frac{3}{5}<em> of  Ali's money</em>.

b = \frac{3}{5}\cdot a (1)

(iii) <em>The ratio of Ali's money to Carrie's money was 4 : 1</em>.

\frac{a}{c} = 4 (2)

(iv) <em>Ali had $ 160 more than Bryan</em>.

a = b + 160 (3)

After some algebraic handling, we have the following system of linear equations:

3\cdot a - 5 \cdot b = 0 (1b)

a - 4\cdot c = 0 (2b)

a - b = 160 (3b)

The solution of the system is: a = 400, b = 240, c = 100

The sum of money is:

s = a + b + c

s = 740

The sum of money received by Ali, Carrie and Bryan is $ 740.

4 0
3 years ago
Solve for x.<br> X + 142<br> 135°
Lyrx [107]

Answer:

X=-7

Step-by-step explanation:

X + 142=135°

X=135-142

X=-7

So the value of X is -7

4 0
2 years ago
Sow your work plz and thank you! Best answer gets brainliest!
ELEN [110]
  • First of all, a 2 foot kangaroo is casting a 7 foot shadow.
  • Next we do 7 divided by 2 which equals 3.5.
  • Since we know the shadow is going to be 3.5x the object size we have to divide its shadow by 3.5
  • 14 divided by 3.5 is  4 so the Eucalyptus tree is 4ft long

<u><em>    Your answer=4ft </em></u>

<u><em></em></u>

Hope this helps!

8 0
3 years ago
Read 2 more answers
What is the domain of the function =<br> x+6-7?<br> x2-7<br> X2-6<br> x26<br> Ox27
Keith_Richards [23]

The domain of the function is 27 i am 100% sure

8 0
3 years ago
Solve the equation x to the power of 2=10
Iteru [2.4K]

Answer:

√10,−√10

Step-by-step explanation:

award brainliest

4 0
3 years ago
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