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3 years ago

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in the 9th grade, 7 of every 10 students is a girl. if there are 200 students in the 9th grade, how many of the students are gir

ls

2 answers:

lidiya [134]3 years ago

5 0

I’m pretty sure 140 :)

zubka84 [21]3 years ago

4 0

Ratio of girls = 7/10

So, no. of girls = 200 × 7/10 = 20×7 = 140

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Please help quickly I will mark brainliest!! At least the equation of the graph please

Paladinen [302]

Answer:

a. The domain of the function is -3 < x ≤ 5

b. The range of the function is -3 ≤ y < 3

c. The y-intercept is the point (0, 0)

d. The values of 'x' at which f(x) ≥ 0 are;

x = -3, x = 1, x = 5

e. The intervals over which f(x) is decreasing are;

-3 < x ≤ - 1, and 1 ≤ x ≤ 3,

f. The local minimums are;

(-1, -1), and (3, -3)

Step-by-step explanation:

a. The domain of a function is the set of the possible independent variable values

Therefore, the domain of the function is -3 < x ≤ 5

b. The range of a function is the set of the possible values of the dependent variable

Therefore, the range of the function is -3 ≤ y < 3

c. The y-intercept is the point (0, 0)

d. The values of 'x' for which f(x) ≥ 0 are;

x = -3, x = 1, x = 5

The range of values of 'x' where f(x) ≥ 0 are;

-3 < x ≤ - 1.5, 0 ≤ x ≤ 1.5, 4.5 ≤ x ≤ 5

e. f(x) is decreasing over the following intervals;

-3 < x ≤ - 1, and 1 ≤ x ≤ 3,

f. The local minimums are the points that are lowest compared to other nearby points

The local minimums are;

(-1, -1), and (3, -3).

3 0

3 years ago

An artist used silver wire to make a square that has a perimeter of 40 inches. She then used copper wire to make the largest cir

Serhud [2]

Answer:

The artist used $8.6\ in$ more of silver wire

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

we know that

The Perimeter of the square is equal to

$P=4a$

where

a is the length side of the square

$P=40\ in$

so

$40=4a$

$a=10\ in$

so

Each side of the square has a length of 10 in

step 2

Find the circumference of the circle

The diameter of the circle is equal to the length of the side of the square

The circumference is equal to

$C=\pi D$

we have

$D=10\ in$

substitute

$C=(3.14)(10)=31.4\ in$

step 3

Find the difference

$40\ in-31.4\ in=8.6\ in$

4 0

4 years ago

The number of people who attended an art conference for five days was 42,27,35,39, and 96 . Describe the effect of the outlier o

Svet_ta [14]

The 96 makes the mean and median much higher that it should be.

3 0

3 years ago

Which expression is equivalent to 12 + 84

liq [111]

Answer:

64+32

Step-by-step explanation:

12+84=96

64+32=96

They both have the the same answer, so they are equivalent.

<em>Could I please have BRAINLIEST?</em>

<em />

4 0

3 years ago

Mon wants to make 5 lbs of the sugar syrup. How much water and how much sugar does he need to make 75% syrup?

Julli [10]

Answer:

He needs 3.75 lbs of sugar and 1.25 lbs of water.

Step-by-step explanation:

Let x lbs be the amount of sugar in the syrup. Then 5-x lbs is the amount of water in this syrup.

Note

5 lbs - 100%

x lbs - 75%

Write a proportion:

$\dfrac{5}{x}=\dfrac{100}{75}$

Cross multiply:

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So, he needs 3.75 lbs of sugar and 5 - 3.75 = 1.25 lbs of water.

7 0

3 years ago