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3 years ago

There are 303 Students. There are 147 Girls. How Many Boys Are there?

Mathematics

2 answers:

artcher [175]3 years ago

8 0

So, we do 303-147, which equals 156

Talja [164]3 years ago

7 0

There are 156 boys at the school

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How many solutions does the equation |x+7|=-1 have

lana66690 [7]

If an equation is in absolute value symbols, the answer is always positive. So this equation has no real solution.

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2 years ago

Suppose that 23 inches of wire costs 92 cents. At the same rate, how much (in cents) will 19 inches of wire cost?

REY [17]

Answer:

76 cents

Step-by-step explanation:

23 inches = 92 cents

1 inches = 92 ÷ 23

= 4 cents

19 inches = 19 × 4

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2 years ago

Find the value of a and b if root3-1/root3+1+ root3+1/root3-1=a+root3 b

Digiron [165]

Answer:

a=4 and b = 0

Step-by-step explanation:

Given : $\dfrac{\sqrt 3 -1}{\sqrt 3+1}+\dfrac{\sqrt 3+1}{\sqrt 3-1}=a+\sqrt 3 b$

To find, The value of a and b

Solution,

Solving LHS of the given equation,

$\dfrac{(\sqrt 3-1)^2+(\sqrt3+1)^2}{(\sqrt 3+1)(\sqrt 3-1)}=a+\sqrt 3 b$

Since,

$(a-b)^2=a^2+b^2-2ab\\\\(a+b)^2=a^2+b^2+2ab\\\\(a-b)(a+b)=a^2+b^2$

So,

$\dfrac{3+1-2\sqrt 3+3+1+2\sqrt 3}{3-1}=a+\sqrt 3 b\\\\4=a+\sqrt 3 b$

$4+0=a+\sqrt 3 b$

On comparing we get :

a = 4 and b = 0

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3 years ago

Please help and answer

Lubov Fominskaja [6]

Answer:

so the answer is B,D,E,F

and question a is B i guess

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3 years ago

Which number line represents the solution set for inequality 3x<-9 ?

vovikov84 [41]

THE RIGHT ANSWER IS OF THIRD OPTION.

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2 years ago

Read 2 more answers