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2 years ago

9

The ratio of boys to girls at a concert is 13:17. If there are a total of 90 children at the concert, how many boys are at the c

oncert?

1 answer:

Gwar [14]2 years ago

6 0

Their is 40 boys at the concert

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Can you guys please help me? Thanks!

olga2289 [7]

you are correct, it is one to two

4 0

2 years ago

Write the equation of the line in fully simplified slope-intercept form.

fiasKO [112]

$y = -\frac{1}{2}x - 1$

Step-by-step explanation:

Let's pick two points on the line: $P_1(-4, 1)$ and $P_2(2, -2).$ Let's calculate the slope of this line using these points:

$m = \dfrac{y_2 - y_1}{x_2 - x_1} = \dfrac{-2 - 1}{2 - (-4)} = -\dfrac{1}{2}$

With this value of the slope, we can write the general slope-intercept form of the equation as

$y = -\frac{1}{2}x + b$

To solve for the y-intercept b, let's use either P1 or P2. I'm going to use P2:

$-2 = -\frac{1}{2}(2) + b \Rightarrow b = -1$

Therefore, the slope-intercept form of the equation is

$y = -\frac{1}{2}x - 1$

6 0

2 years ago

How do you write 2/9 as a %

Dmitriy789 [7]

The answer is 22.222222%.

5 0

3 years ago

Read 2 more answers

Write a linear function f with the values f(5) = -1 and f(0) = -1.

vichka [17]

Answer:

Step-by-step explanation:

F(x)=-1

6 0

3 years ago

1/5+1/4+2/5 this is adding fractions with unlike denominators what is the answer

attashe74 [19]

What you would do is change all the fractions to 20ths so they have a common denominator. For 1/5, you multiply 4x5 to get 20 in the denominator. Whatever you multiply on the bottom, you must do at the top. Do that for all fractions and you would get this:
4/20 + 5/20 + 8/20= 17/20 because denominator stays the same, add the values in the numerator.
ANSWER: 17/20

5 0

2 years ago