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o-na [289]
3 years ago
7

In class 9A the ratio of boys to girls is 3:4. if there are 12 boys,how many girls are there?​

Mathematics
1 answer:
Mamont248 [21]3 years ago
3 0

16 girls. 12 divided by 4 is 3, so this means that you have to take 4 and multiply it by 4 which equals to 16.

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Drupady [299]
Multiply 12 by $1.20. Subtract this from $23.40.
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3 years ago
Read 2 more answers
Which pair of related inequalities can be graphed to find the solution set to log(x + 90) ≥ 7?
docker41 [41]

Answer:

D

Step-by-step explanation:

Answer for edgenuity

5 0
3 years ago
The product of 4 ​, and a number increased by 7 ​, is -36.
Norma-Jean [14]

Answer:

your awnser should be. 4(x + 7 ) = -36

4 0
3 years ago
Barbara wants to buy some glittery heart-shaped beads to make friendship bracelets. The beads she wants come in a small pack wit
faust18 [17]

Answer:

The large pack is a better deal!

Step-by-step explanation:

so first we need to figure out how much the individual beads cost.

Small pack: $ 3.60÷90 = 0.04 cents per bead

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Hope this helps!!

Have a great day!!

8 0
3 years ago
help pls, im in a younger grade but my teacher wants me to do ap highschool senior stuff, i need help​
emmainna [20.7K]
<h3>Answer:  318</h3>

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

Explanation:

Refer to the diagram below. Notice how I've formed 3 rectangles underneath the curve. The term "right Riemann sum" refers to the idea of making each rectangle's upper right corner be on the curve. The upper left corner spills over top, meaning we have an over-estimate going on here.

Simply find the area of each rectangle, and then add up those sub areas. That will get you to the final answer.

Note how we go from x = -1 to x = 5, which is a distance of 5-(-1) = 6 units. Split three ways and each interval is 6/3 = 2 units wide.

If we started at x = -1, then increasing 2 units leads us to x = -1+2 = 1 as the first x input we compute into f(x). This is the height of the first rectangle.

Then 1+2 = 3 is the next input, meaning f(3) is the height of the next rectangle, and so on. We keep going until all rectangles are accounted for.

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

You should have these rectangle heights:

  • 3
  • 29
  • 127

when moving from left to right.

They add up to 3+29+127 = 159. Double that to get to the final answer of 2*159 = 318

The formula I'm using is

\Delta x*(f(x_1) + f(x_2) + \dots f(x_n))

where x1,x2,... represents the values 1, 3, and 5. These are the x values plugged into the function to get the corresponding heights (3, 29, 127)

7 0
2 years ago
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