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-Dominant- [34]
2 years ago
12

Help i don’t know how to find the answer

Mathematics
1 answer:
forsale [732]2 years ago
3 0

Answer:

what grade are you n?

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Tony’s tattoo parlor sold 389 tattoos this month. 43 of those tattoos where arm tattoos. What is the reasonable estimate of the
qaws [65]

Answer:89%

Step-by-step explanation: its the probability that they will get anything other than an arm tattoo. So you subtract 43 from 389 and it gives you 346,

346/389 x 100% = 88.9%

4 0
3 years ago
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Solve for x<br> 3x - 2/ 3x + 1
givi [52]

Answer:

7/3x+1

Step-by-step explanation:

3x - 2/ 3x + 1

=7/3x+1

8 0
3 years ago
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CAN SOMEONE PLEASE HELP ME ON NUMBER 3
boyakko [2]

Answer:

36

Step-by-step explanation:

5 0
3 years ago
A tunnel is built in form of a parabola. The width at the base of tunnel is 7 m. On
uysha [10]

Given:

The width at the base of parabolic tunnel is 7 m.

The ceiling 3 m from each end of the base there are light fixtures.

The height to light fixtures is 4 m.

To find:

Whether it is possible a trailer truck carrying cars is 4 m wide and 2.8 m high is going to drive through the tunnel.

Solution:

The width at the base of tunnel is 7 m.

Let the graph of the parabola intersect the x-axis at x=0 and x=7. It means x and (x-7) are the factors of the height function.

The function of height is:

h(x)=ax(x-7)             ...(i)

Where, a is a constant.

The ceiling 3 m from each end of the base there are light fixtures and the height to light fixtures is 4 m. It means the graph of height function passes through the point (3,4).

Putting x=3 and h(x)=4 in (i), we get

4=a(3)((3)-7)

4=a(3)(-4)

\dfrac{4}{(3)(-4)}=a

-\dfrac{1}{3}=a

Putting a=-\dfrac{1}{3}, we get

h(x)=-\dfrac{1}{3}x(x-7)              ...(ii)

The center of the parabola is the midpoint of 0 and 7, i.e., 3.

The width of the truck is 4 m. If is passes through the center then the truck must m 2 m on the left side of the center and 2 m on the right side of the center.

2 m on the left side of the center is x=1.5.

A trailer truck carrying cars is 4 m wide and 2.8 m high is going to drive through the tunnel is possible if h(1.5) is greater than 2.8.

Putting x=1.5 in (ii), we get

h(1.5)=-\dfrac{1}{3}(1.5)(1.5-7)

h(1.5)=-(0.5)(-5.5)

h(1.5)=2.75

Since h(1.5)<2.8, therefore the trailer truck carrying cars is 4 m wide and 2.8 m high is going to drive through the tunnel is not possible.

6 0
2 years ago
Evaluating expressions for the value of x 4.5x-12 x=2
Svetradugi [14.3K]

X = 2

4.5(2) -12

9 -12

= -3

Answer is -3

4 0
3 years ago
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