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pav-90 [236]
3 years ago
12

I realy need some help I put the questions in the attachments

Mathematics
1 answer:
faltersainse [42]3 years ago
5 0
Picture 1: C. y=2x+3
Picture 2: D. y= -5
Picture 3. Graph D
Picture 4. Graph A
Picture 5. Graph A
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There are 48 students in a school play. The ratio of boys to girls is 5:7. How many boys are in the school play? Explain how you
mr Goodwill [35]
Boys:  x
gilrs:   y

From the text of the task:

\left \{ {{\frac{x}{y}=\frac{5}{7}} \atop {x+y=48 \rightarrow x=48-y}} \right.

Replacing x:

\frac{48-y}{y}=\frac{5}{7}\\
\\
7(48-y)=5y\\
\\
336-7y=5y\\
\\
12y=336\\
\\
y=\frac{336}{12}=28

So there are 28 girs and 20 boys
7 0
4 years ago
Read 2 more answers
Please help I think these are the right answers!!!
Papessa [141]

We performed the following operations:

f(x)=\sqrt[3]{x}\mapsto g(x)=2\sqrt[3]{x}=2f(x)

If you multiply the parent function by a constant, you get a vertical stretch if the constant is greater than 1, a vertical compression if the constant is between 0 and 1. In this case the constant is 2, so we have a vertical stretch.

g(x)=2\sqrt[3]{x}\mapsto h(x)=-2\sqrt[3]{x}=-g(x)

If you change the sign of a function, you reflect its graph across the x axis.

h(x)=-2\sqrt[3]{x}\mapsto m(x)=-2\sqrt[3]{x}-1=h(x)-1

If you add a constant to a function, you translate its graph vertically. If the constant is positive, you translate upwards, otherwise you translate downwards. In this case, the constant is -1, so you translate 1 unit down.

5 0
3 years ago
A cylinder of manganese (length 4.00 cm, diameter = 1.00 cm) has a mass of 22.62 g. What is the density of manganese?
Gnom [1K]
Equation for density is mass/volume

Mass=22.62 g

Volume= 22/7 x 1/2^2 x 4

3.14 x 0.5 x 0.5 x 4

=3.14 cm3

Mass/ Volume

22.62/3.14

7.2 g/cm3 is the answer

5 0
3 years ago
What is the length if the height is 15 and the area is 45? *
Scrat [10]
I’m not sure but hi :)
6 0
3 years ago
How many inches are in 5 1/2
stealth61 [152]

There are 12 inches in every foot 5 x 12 is 60 half a foot would be 12÷2=6  so 60+ 6=66 inches

3 0
3 years ago
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